湿法脱硫系统烟气换热器新型化学清洗工艺及应用

华电技术 ›› 2013, Vol. 35 ›› Issue (1): 69-71.

湿法脱硫系统烟气换热器新型化学清洗工艺及应用

陈统钱1，张国鑫2，朱云水2，陆军3，周海明1

1.浙江浙能乐清发电有限责任公司，浙江温州 323609； 2.浙江浙能能源技术有限公司，浙江杭州 310052； 3.上海未来企业有限公司，上海 200030

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2013-01-25 发布日期:2013-01-25

New type chemical clean technology for GGH of wet desulphurization system and application

CHEN Tongqian1, ZHANG Guoxin2, ZHU Yunshui2, LU Jun3, ZHOU Haiming1

1.Zhejiang Zheneng Leqing Power Generation Company Limited, Wenzhou 323609, China; 2.Zhejiang Zheneng Energy Technology Company Limited, Hangzhou 310052, China; 3.Shanghai Weilai Enterprise Company Limited, Shanghai 200030, China

Received:1900-01-01 Revised:1900-01-01 Online:2013-01-25 Published:2013-01-25

摘要/Abstract

摘要： 为解决石灰石-石膏湿法脱硫系统烟气换热器(GGH)的结垢、堵塞、腐蚀问题，提出了GGH新型化学清洗工艺，不拆卸换热元件，直接在GGH表面喷淋中性化学清洗剂，清洗周期短，除垢率≥95%，不腐蚀换热元件和设备，化学清洗废水经电厂废水系统处理后合格排放。采用新工艺清洗的GGH，脱硫系统投运率提高了0.5%以上，减少了SO2排放，社会效益良好。经测算，1台600 MW机组(1个检修周期)采用新工艺化学清洗1次，1年可产生100万～200万元的经济效益

关键词: 烟气换热器, 结垢, 堵塞, 新型化学清洗工艺, 应用

Abstract: In order to solve the problems of scaling, blockage and corrosion of the GGH of limestonegypsum wet desulphurization system, a new type chemical clean technology for GGH was proposed, in which it is not needed to dismantle the heat transfer elements. The neutral chemical cleaning agent will be sprayed on the GGH surfaces directly. The cleaning period of the new technology is shorter. The scaleremoving efficiency of the new technology is not less than 95%. The neutral chemical cleaning agent does not corrode the heat transfer elements and devices. The waste water of chemical cleaning will be treated in the power plant waste water system and discharged as qualified waste water. The operation rate of the desulphurization system, the GGH of which had been cleaned by the new technology, was increased by more than 0.5%. The SO2 emission was decreased, and favorable social effect was obtained. According to the estimation, to clean a 600MW unit one time in a overhaul period can generate the economic benefit ￥1,000,000~2,000,000 in one year.

Key words: gas-gas heater (GGH), scaling, blockage, new type chemical clean technology, application

陈统钱;张国鑫;朱云水;陆军;周海明. 湿法脱硫系统烟气换热器新型化学清洗工艺及应用[J]. 华电技术, 2013, 35(1): 69-71.

CHEN Tongqian;ZHANG Guoxin;ZHU Yunshui;LU Jun;ZHOU Haiming. New type chemical clean technology for GGH of wet desulphurization system and application[J]. Huadian Technology, 2013, 35(1): 69-71.

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