“W”型火焰锅炉燃烧技术的优势

<span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">W</span><span style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">形火焰锅炉燃烧技术优势：</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br/>1&nbsp;</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">一次风速比四角切圆锅炉更低，即允许降低一次风速。对于无烟煤，一次风速可降低至</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">10~<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="15" unitname="m">15m</chmetcnv></span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">，而四角切圆炉一般为</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">20~<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="22" unitname="m">22m</chmetcnv>,</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">因此</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">“W”</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">炉允许的风煤比可降低很多，减少了着火热，使煤粉气流易于着火。</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br/>2&nbsp;</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">由于燃烧器布置在双拱上，其喷口向下，故</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">“W”</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">炉易于实现煤粉的分离浓缩技术，煤粉浓度可提高到</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">1.5~<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="2" unitname="kg">2.0kg</chmetcnv></span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">煤粉</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">/<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="1" unitname="kg">1kg</chmetcnv></span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">空气（一般的煤粉浓度为</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">0.3~<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue=".7" unitname="kg">0.7kg</chmetcnv></span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">煤粉</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">/<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="1" unitname="kg">1kg</chmetcnv></span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">空气）。煤粉浓度的提高，可以大幅度减少煤粉气流的着火热，有利于提高低反应煤的着火稳定性。</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br/>3&nbsp;“W”</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">火焰的燃烧中心就在煤粉喷嘴出口附近，煤粉喷出后就直接受到回流高温烟气的加热，从而提高了火焰根部的温度水平，对着火有利。</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br/>4&nbsp;</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">拱形炉膛为煤粉着火创造了有利条件：拱下为煤粉着火区，炉膛拱部对煤粉起</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; 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: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">屏蔽</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; 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: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">作用，使煤粉气流不会受到炉内其它不正常烟气流动的冲击和影响。这有利于低挥发份煤的着火和稳定燃烧。</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br/>5&nbsp;</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">炉膛设计为双拱绝热炉膛，根据燃用煤种的特性在拱部和下炉膛四周合理敷设卫燃带，用来提高炉内火焰温度和煤粉着火稳定性。</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br/>6&nbsp;“W”</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">形火焰在炉膛内的行程较长，即可以延长煤粉颗粒在炉内的停留时间，这对提高低反应煤的燃烬率非常有利。</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br/>7&nbsp;</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">一般与双进双出钢球磨匹配，应此在低负荷时煤粉较细，这有利于低负荷稳燃；另外，由于在负荷变化时，下部着火炉膛火焰中心温度变化不大，因而负荷调节性能好，在较低负荷运行时可以不投油或少投油助燃。由于强化了稳燃条件，在单烧无烟煤或无烟煤与贫煤的混煤时，最低不投油的稳燃负荷可达到</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">40%~55%</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">。</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br/>8&nbsp;</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">与四角切圆燃烧方式相比，单个燃烧器的可调节性比较强，炉出口没有烟气的残余旋卷，炉水平烟道烟气流速与烟温偏差小、汽温偏差小。</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br/>9&nbsp;</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">空气可以沿着火焰行程逐步加入，易于实现分级配风，分段燃烧，有利于低挥发份无烟煤的着火和燃烧。</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br/>10&nbsp;“W”</span><span style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-ascii-font-family: Tahoma; mso-hansi-font-family: Tahoma; mso-bidi-font-family: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">形火焰在下部着火炉膛底部向上反向流动时，可使部分飞灰分离出来，减少了烟气中的飞灰含量。</span><span lang="EN-US" style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Tahoma; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/><br style="mso-special-character: line-break;"/><br style="mso-special-character: line-break;"/></span>

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