中国电力 ›› 2014, Vol. 47 ›› Issue (4): 32-37.DOI: 10.11930/j.issn.1004-9649.2014.4.32.5

• 专稿 • 上一篇    下一篇

烟气深度冷却系统在1 000 MW超超临界机组的应用

杜和冲, 吴克锋, 申建东, 袁德刚, 李大才   

  1. 广东大唐国际潮州发电责任有限公司, 广东 潮州 515723
  • 收稿日期:2013-12-11 出版日期:2014-04-30 发布日期:2015-12-22
  • 作者简介:杜和冲(1982-),男,江西九江人,工程师,从事600 MW、1 000 MW发电机组运行技术管理工作。E-mail: duhechong@126.com

Application of Flue Gas Deep Cooling System in 1 000-MW Ultra-Supercritical Units

DU He-chong, WU Ke-feng, SHEN Jian-dong, YUAN De-gang, LI Da-cai   

  1. Guangdong Datang International Chaozhou Power Generation Co. Ltd., Chaozhou 515723, China
  • Received:2013-12-11 Online:2014-04-30 Published:2015-12-22

摘要: 为了充分利用烟气余热加热凝结水,降低烟气温度,达到降低飞灰比电阻以提高电除尘器的除尘效率的目的,实现电除尘器“低温除尘增效”,同时提高锅炉效率,降低机组热耗和发电煤耗。在某1 000 MW机组锅炉空气预热器出口与电除尘器入口烟道内设计、加装烟气余热利用回收装置。实践表明:加装烟气深度冷却装置后,电除尘器的除尘效率提高0.1%,脱硫水耗明显降低,机组供电煤耗显著下降。

关键词: 1 000 MW机组, 烟气深度冷却器, 排烟温度, 供电煤耗

Abstract: In order to fully utilize the waste heat from flue gas to heat up the condensate to realize the low-temperature dust removal with high efficiency in the electrostatic precipitator(ESP) through reducing the fly ash specific resistivity at lower flue gas temperatures, to improve the boiler efficiency and to reduce the heat consumption and gross coal consumption for power generation units, a flue gas waste heat recovery device is designed and installed between the air pre-heater outlet and the ESP inlet in a 1 000-MW boiler. Practical operation shows that with the flue gas deep cooling device installed, the ESP dust removal efficiency is increased by 0.1% while the desulfurization water consumption is lowered substantially and the net coal consumption is significantly decreased.

Key words: 1 000-MW unit, boiler in-depth cooler, exhaust gas temperature, net coal consumption rate

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