660 MW超超临界锅炉净烟气取水装置的优化研究  

Research on Application Optimization of Clean Flue Gas Water Intake Device for 660 MW Ultra Supercritical Boiler

作　　者：王林[1] 杨博[1] 王红雨[1] 姜宏伟 宋晓辉[1] 张亚夫[1] 高景辉[1] 孟颖琪[1] WANG Lin;YANG Bo;WANG Hongyu;JIANG Hongwei;SONG Xiaohui;ZHANG Yafu;GAO Jinghui;MENG Yingqi(Xi'an Thermal Power Research Institute Co.Ltd.,Xi'an 710054,China;North Shengli Power Plant of Huaneng Xilingol Thermal Power Company,Xilinhot 026000,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]华能锡林郭勒热电公司北方胜利电厂,内蒙古锡林浩特026000

出　　处：《工业加热》2021年第3期43-46,共4页Industrial Heating

基　　金：国家科技支撑计划资助项目(2019BAA03B01)。

摘　　要：为适应内蒙古地区干旱缺水的环境特点,降低火电机组的水耗,针对660 MW超超临界褐煤锅炉的技术特性,提出并应用了一套回收锅炉烟气中水分并加以利用的节水装置。该装置通过在脱硫塔出口烟道内加装冷却器,降低了烟气温度,使得烟气中的水蒸气受冷凝结,并汇集成有利用价值的液态水。实际运行结果表明,该烟气取水装置具有节水效果显著、出力调整灵活等优势。同时,为充分利用该回收水,对相关设备进行优化改造,增加脱硫吸收塔补给水与湿式电除尘器集尘板冲洗水两路用户,进而保证了设备的长期可靠运行,并取得了节水与降尘双重效益。相关设备的改造经验可供后续同类设备的优化改造提供参考。In order to adapt to the geographical characteristics of drought and water shortage in northern China and reduce the water consumption of thermal power units,a set of water-saving device is proposed and applied to recover and utilize the moisture in boiler flue gas according to the technical characteristics of 660 MW ultra supercritical lignite boiler.By installing a cooler in the flue gas outlet of the desulfurization tower,the flue gas temperature is reduced,and the water vapor in the flue gas is cooled and condensed,and the valuable liquid water is collected.The actual operation results show that the flue gas water intake device has the advantages of remarkable water saving effect and flexible output adjustment.In view of the overflow problem of condensate pool,two users were added after the optimization and transformation,namely,make-up water for desulfurization absorption tower and flushing water for dust collecting plate of wet electrostatic precipitator,which ensured the long-term reliable operation of the equipment and achieved double benefits of water saving and environmental protection.The relevant application debugging experience can be used as reference for similar equipment in the future.

关 键 词：火电厂 烟气取水 冷凝 回收利用 优化改造 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]