[Post=100]<p class="MsoNormal" style="MARGIN: 3.9pt 0cm; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly; mso-para-margin-top: .25gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .25gd; mso-para-margin-left: 0cm;"><b><span lang="EN-US" style="FONT-SIZE: 11pt; FONT-FAMILY: 黑体; mso-hansi-font-family: 宋体;">3</span></b><b><span style="FONT-SIZE: 11pt; FONT-FAMILY: 黑体; mso-hansi-font-family: 宋体;">.新型暖风器功能<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">新型暖风器是针对传统型暖风器在机组长周期运行中出现问题而设计的。其特点有三方面:一是满足暖风器通蒸汽时热交换能力不变,减轻和防止空预器低温腐蚀堵灰的发生;二是满足暖风器不通蒸汽时,最大限度降低风道阻力的要求,即翻转<span lang="EN-US">90</span>度,不仅大幅降低风道阻力,而且减少了杂物在传热元件上沉积,再次投用时传热效果不减(见图<span lang="EN-US">1</span>);三是新型暖风器汽水回路与传统型不同,避免了蒸汽冷凝过程中体积大幅减小而带来的问题,它的回路是采用管套管方式,从而降低了因应力变化大而发生泄漏故障。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; 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HEIGHT: 201pt;"><imagedata cropright="10073f" cropleft="2844f" croptop="11825f" otitle="暖风器" src="file:///C:\DOCUME~1\电力科技\LOCALS~1\Temp\msohtml1\01\clip_image005.jpg"><font face="Times New Roman" size="3"></font></imagedata></shape><p></p></span></b></p><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-line-height-rule: exactly;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">图<span lang="EN-US">1<span style="mso-spacerun: yes;"> </span></span>翻转暖风器示意图<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-line-height-rule: exactly;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">1</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">—风道;<span lang="EN-US">2</span>—转动护框;<span lang="EN-US">3</span>—转动护件;<span lang="EN-US">4</span>—法兰盘;<span lang="EN-US">5</span>—充氮阀;<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-line-height-rule: exactly;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">6</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">—转动手柄;<span lang="EN-US">7</span>—散热片组;<span lang="EN-US">8</span>—转动轴;<span lang="EN-US">9</span>—进汽管;<span lang="EN-US">10</span>—出水管。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p> </p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">新型暖风器安装位置不变,在送风机与空预器入口风道之间,根据风道实际状况将暖风器分成几个汽水回路,安装内置的框架上。这样做的目的即减轻重量又方便转动,有利汽水回路建立,避免疏水不畅等现象发生。分组还可以根据运行情况,全投或分组投,从而提高了设备可靠性。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 3.9pt 0cm; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly; mso-para-margin-top: .25gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .25gd; mso-para-margin-left: 0cm;"><b><span lang="EN-US" style="FONT-SIZE: 11pt; FONT-FAMILY: 黑体; mso-hansi-font-family: 宋体;">4</span></b><b><span style="FONT-SIZE: 11pt; FONT-FAMILY: 黑体; mso-hansi-font-family: 宋体;">.安全性与经济性评价<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">新型可翻转暖风器的正常投用热交换功能没有改变,空预器冬季低温腐蚀堵灰程度得到减轻,提高了空预器热交换能力,改善锅炉燃烧风温,其安全效益和经济效益十分可观。可翻转的功能还使得夏季风道阻力大幅下降,带来改善风机运行条件,全年仅一台炉风机节电产生多供电量<span lang="EN-US">200</span>万度以上,折标煤不少于<span lang="EN-US">650</span>吨。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">新型暖风器翻转功能可在机组正常运行中进行,结构上又方便分组隔离和保养。与老式暖风器相比还排除了自身传热元件积灰堵塞问题,再次投用传热效果不减。分析了传统暖风器经常发生泄漏是因为热应力不均所至,新型暖风器汽水回路克服了这一点,设备可靠性大幅提高,其直接和间接安全效益和经济效益十分可观。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 3.9pt 0cm; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly; mso-para-margin-top: .25gd; mso-para-margin-right: 0cm; mso-para-margin-bottom: .25gd; mso-para-margin-left: 0cm;"><b><span lang="EN-US" style="FONT-SIZE: 11pt; FONT-FAMILY: 黑体; mso-hansi-font-family: 宋体;">5</span></b><b><span style="FONT-SIZE: 11pt; FONT-FAMILY: 黑体; mso-hansi-font-family: 宋体;">.小结与建议<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 24.75pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">目前节能降耗、节约增效越来越受社会各行各业重视,是人类自身求生存发展的需要,同样是电厂求生存求发展的需要。随着环保业越来越受人们的关注和脱硫设备投用,一方面是提高了发电成本,另一方面是低硫煤价格上升加重发电成本上升,对已使用脱硫设备电厂控制煤价成为首选。因为这样锅炉燃煤含硫量会比以往高一档次,却可以降低燃煤成本来提高竞争能力。锅炉尾部空预器传热元件金属防腐防堵就尤其重要。酸对设备的腐蚀将是非常严重的,当受热面的温度低于烟气的露点时,烟气中的水蒸汽和硫燃烧后所产生的三氧化硫结合成的硫酸会凝结在受热面上,严重地腐蚀受热面。如果将受热面壁温以高2<span lang="EN-US">0</span>℃以上,低温腐蚀低温堵灰将会得到有效控制。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 24.75pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">综上所述,节能新型暖风器即防止低温腐蚀堵灰,又消除自身不足,达到节能的效果,大大改善锅炉运行条件,为机组安全高效长周期运行打下基础,每年还能带来十分可观经济效益。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p> </p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p> </p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p> </p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">参考文献:<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">(<span lang="EN-US">1</span>)应静良 李永华 电站锅炉空气预热器 第一版,北京:中国电力出版社 <span lang="EN-US">2002<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">(<span lang="EN-US">2</span>)王渝汉 郑伟浩 电站锅炉回转式空预器漏风积灰专题调研报告<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 123.75pt; mso-char-indent-count: 11.74;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"> 江苏省电力系统发电科技情报网 <span lang="EN-US">1998<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">(<span lang="EN-US">3</span>)周利庆 锅炉用新型翻转框式暖风器 专利号:<span lang="EN-US">ZL200320120262.9</span> <span lang="EN-US">2004.12.29<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 52.7pt; TEXT-INDENT: -52.7pt; mso-char-indent-count: -5.0;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p> </p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 52.7pt; TEXT-INDENT: -52.7pt; mso-char-indent-count: -5.0;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p> </p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 52.7pt; TEXT-INDENT: -52.7pt; mso-char-indent-count: -5.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">作者简介:<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">周利庆 男 (<span lang="EN-US">1957</span>-) 江苏南通人,毕业于沈阳电力专科学校,长期从事锅炉管理工作,擅长锅炉燃烧调整,发表论文多篇。<span lang="EN-US"><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">联系电话:<span lang="EN-US">0513—85161206<span style="mso-spacerun: yes;"> </span></span>传真:<span lang="EN-US">0513--85560319<span style="mso-spacerun: yes;"> </span><p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21.1pt; mso-char-indent-count: 2.0;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">电子邮址:<span lang="EN-US">zhouliqing1001@163.com <p></p></span></span></b></p><p class="MsoBodyText" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27.45pt; TEXT-ALIGN: center;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"><p> </p></span></b></p><p class="MsoBodyText" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27.45pt; TEXT-ALIGN: center;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">Inquiring into the way of reducing low temperature corrosion on boiler tail section<p></p></span></b></p><p class="MsoBodyText" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">ZHOU Li-qing <p></p></span></b></p><p class="MsoBodyText" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">Nantong Power Plant HPI, Nantong 226003</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">,<span lang="EN-US">China<p></p></span></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 仿宋_GB2312; mso-bidi-font-size: 10.5pt; mso-hansi-font-family: 宋体;">【</span><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">Abstract</span></b><span style="FONT-FAMILY: 仿宋_GB2312; mso-bidi-font-size: 10.5pt; mso-hansi-font-family: 宋体;">】</span><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;"> As Electrical Power Market developing, Energy saving and transforming are concerned more and more. The heater itself is energy consumption equipment, so making it less energy consumptive is more important and valuable. The following is trying to find out how to reduce low temperature corrosion the boiler tail section for the unit optimal operation.<p></p></span></b></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0;"><span style="FONT-FAMILY: 仿宋_GB2312; mso-bidi-font-size: 10.5pt; mso-hansi-font-family: 宋体;">【</span><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">Key words</span></b><span style="FONT-FAMILY: 仿宋_GB2312; mso-bidi-font-size: 10.5pt; mso-hansi-font-family: 宋体;">】</span><b style="mso-bidi-font-weight: normal;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt;">Heater<span style="mso-spacerun: yes;"> </span>Revolvable<span style="mso-spacerun: yes;"> </span>Dew Condensation<span style="mso-spacerun: yes;"> </span>Blockade<span style="mso-spacerun: yes;"> </span>High pressure differentia<span style="mso-spacerun: yes;"> </span>Energy Saving for more benefit<p></p></span></b></p>[/Post] |