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<p align="center"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';"><strong><font size="4">锅炉发展史（二）</font></strong></span></p><p><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">蒸汽参数：蒸汽参数包括锅炉的蒸汽压力和温度，通常是指过热器、再热器出口处的过热蒸汽压力和温度，如没有过热器和再热器，即指锅炉出口处的饱和蒸汽压力和温度。锅炉压力单位用兆帕</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">(MPa)</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">表示</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">也有用工程大气压</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">(at)</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">表示的，</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">兆帕等于</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">10.2</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">工程大气压。</span><span lang="EN-US" style="FONT-SIZE: 12pt;">
<p></p></span></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">给水温度指省煤器的进水温度，无省煤器时即指锅筒进水温度。分类</span><span lang="EN-US" style="FONT-SIZE: 12pt;">
<p></p></span></p><p></p><p></p><p></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">锅炉可按照不同的方法进行分类。锅炉按用途可分为工业锅炉、电站锅炉、船用锅炉和机车锅炉等；按锅炉出口压力可分为低压、中压、高压、超高压、亚临界压力、超临界压力等锅炉</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">(</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">见表</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"><A>[</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">锅炉的压力范围</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">]</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'times new roman'; mso-hansi-font-family: 'times new roman';">。<a href="http://www.yzxddj.com/gl/biao.jpg" target="_blank"><img title="dvubb" alt="图片点击可在新窗口打开查看" src="http://www.yzxddj.com/gl/biao.jpg" border="0" style="WIDTH: 500px;"/></a></span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/> <span lang="EN-US">
<p></p></span></font></span></p><p></p><p></p><p></p><p></p><p><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">中国电站锅炉的现行系列为</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-fareast-font-family:宋体;;">:</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">中压</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-fareast-font-family:宋体;;">3.9</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">兆帕；高压</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-fareast-font-family:宋体;;">10</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">兆帕；超高压</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-fareast-font-family:宋体;;">14</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">兆帕；亚临界压力</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-fareast-font-family:宋体;;">17</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">兆帕。中国工业锅炉的现行系列为：</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-fareast-font-family:宋体;;">0.5</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">兆帕、</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-fareast-font-family:宋体;;">0.8</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">兆帕、</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-fareast-font-family:宋体;;">1.3</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">兆帕、</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-fareast-font-family:宋体;;">2.5</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">兆帕。</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;mso-fareast-font-family:宋体;;"><br/> <span style="mso-spacerun: yes;"> </span></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:'mso-bidi-font-family:'mso-font-kerning:1.0pt;mso-ansi-language:en-us;mso-fareast-language:zh-cn;mso-bidi-language:ar-sa;;">锅炉按水和烟气的流动路径可分为火筒锅炉、火管锅炉和水管锅炉，其中火筒锅炉和火管锅炉又合称为锅壳锅炉；按循环方式可分为自然循环锅炉、辅助循环锅炉（即强制循环锅炉）、直流锅炉和复合循环锅炉。复合循环锅炉是由辅助循环锅炉和直流锅炉复合而成，其中包括低循环倍率锅炉（见电站锅炉）。按燃烧方式锅炉分为室燃炉、层燃炉和沸腾炉等。</span></p><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'times new roman'; mso-hansi-font-family: 'times new roman'; mso-bidi-font-family: 'times new roman'; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">工作过程</span><span lang="EN-US" style="FONT-SIZE: 12pt;">
<p><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'times new roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'times new roman'; mso-hansi-font-family: 'times new roman';"><a href="http://www.yzxddj.com/gl/7.jpg" target="_blank"><img title="dvubb" alt="图片点击可在新窗口打开查看" src="http://www.yzxddj.com/gl/7.jpg" border="0"/></a>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman">
<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p></span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman">
<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman">
<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p></p><p><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'times new roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'times new roman'; mso-hansi-font-family: 'times new roman';"><a href="http://www.yzxddj.com/gl/7.jpg" target="_blank"><img title="dvubb" alt="图片点击可在新窗口打开查看" src="http://www.yzxddj.com/gl/7.jpg" border="0"/></a>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman">
<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p></span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman">
<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span></p></span></p><p><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'times new roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'times new roman'; mso-hansi-font-family: 'times new roman';"><a href="http://www.yzxddj.com/gl/7.jpg" target="_blank"><img title="dvubb" alt="图片点击可在新窗口打开查看" src="http://www.yzxddj.com/gl/7.jpg" border="0"/></a>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman">
<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p></span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman">
<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman">
<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p></p><p><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'times new roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'times new roman'; mso-hansi-font-family: 'times new roman';"><a href="http://www.yzxddj.com/gl/7.jpg" target="_blank"><img title="dvubb" alt="图片点击可在新窗口打开查看" src="http://www.yzxddj.com/gl/7.jpg" border="0"/></a>
<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman">
<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p></span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span><span style="FONT-SIZE: 12pt;"><font face="Times New Roman">
<span lang="EN-US"><p></p></span></font></span></p><p></p><p></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p><span style="FONT-SIZE: 12pt;"><font face="Times New Roman"><br/></font></span></p><p></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 12pt; mso-char-indent-count: 1.0;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 120</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">吨／时自然循环燃煤电站锅炉的简图和燃烧系统示意图。首先由磨煤机将煤磨制成粉。煤粉由空气携带通过装在炉墙上的燃烧器送入炉膛中燃烧。在火焰中心处的气体温度达到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="1600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">。锅炉的蒸发受热面装在炉膛的内壁上，组成水冷壁，吸收炉膛中高温火焰和烟气的辐射热量，使炉膛出口处烟气温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1000</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">1150</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃。后墙水冷壁的上部分（在水平烟道进口）组成排列较稀的数列凝渣管，以防止结渣。为防止锅炉受热面上积灰或结渣，还使用吹灰器。过热器位于水平烟道中，它的作用是把从锅筒出来的饱和蒸汽加热成具有一定温度的过热蒸汽，目的是提高电站的经济性。烟气通过过热器后温度降低到</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman"> 500</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">～</span><chmetcnv unitname="℃" sourcevalue="600" hasspace="False" negative="False" numbertype="1" tcsc="0" wst="on"></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">600</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃</span><chmetcnv></chmetcnv><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">然后进入尾部烟道。尾部烟道中受热面之一为省煤器。它由很多平行的蛇形管所组成，其作用是使给水在进入锅筒之前预先加热，并降低排烟温度。另一尾部受热面是空气预热器。它的作用是使空气在进入炉膛以前加热到一定温度，以改善燃烧和进一步降低排烟温度，提高锅炉效率。在水汽系统方面，给水在加热器中加热到一定温度，经给水管道进入省煤器，进一步加热以后送入锅筒，与锅水混合后沿下降管下行至水冷壁进口集箱。水在水冷壁管内吸收炉膛辐射热形成汽水混合物经上升管到达锅筒中，由汽水分离装置使水、汽分离。分离出来的饱和蒸汽由锅筒上部流往过热器</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">,</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">继续吸热成为</span><span lang="EN-US" style="FONT-SIZE: 12pt;"><font face="Times New Roman">450</font></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'mso-hansi-font-family:';">℃的过热蒸汽，然后送往汽轮机。在燃烧和烟风系统方面，送风机将空气送入空气预热器加热到一定温度。在磨煤机中被磨成一定细度的煤粉，由来自空气预热器的一部分热空气携带经燃烧器喷入炉膛。燃烧器喷出的煤粉与空气混合物在炉膛中与其余的热空气混合燃烧，放出大量热量。燃烧后的热烟气顺序流经炉膛、凝渣管束、过热器、省煤器和空气预热器后，再经过除尘装置，除去其中的飞灰，最后由引风机送往烟囱排向大气。</span></p></span> |
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