燃煤电厂烟羽治理系统优化  

Optimization of smoke plume control system in coal-fired power plant

作　　者：张知翔[1,3] 李赞 朱仓海 毕华南 杨杰 李建朋 安海军 ZHANG Zhixiang;LI Zan;ZHU Canghai;BI Huanan;YANG Jie;LI Jianpeng;AN Haijun(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China;Hebei Hanfeng Power Generation Co.,Ltd.,Handan 056299,China;Xi’an TPRI Boiler&Environmental Protection Engineering Co.,Ltd.,Xi’an 710054,China)

机构地区：[1]西安热工研究院有限公司,陕西西安710054 [2]河北邯峰发电有限责任公司,河北邯郸056299 [3]西安西热锅炉环保工程有限公司,陕西西安710054

出　　处：《热力发电》2020年第11期70-74,共5页Thermal Power Generation

摘　　要：本文介绍了某电厂烟羽治理改造项目的工艺设计及运行情况、烟羽治理系统的设计特点、运行情况及优化方案。优化方案为:烟气冷凝器采用薄壁椭圆形钛管顺列布置,大幅降低了烟气冷凝器的阻力;冷凝水直接排入冷却塔,大幅简化了冷凝水系统;冷凝水中溶解的固形物质量浓度为41~53 mg/L,烟气冷凝器对SO3的脱除量为0.503~0.696 mg/m^3,对可凝结颗粒物的脱除量为0.797~1.169 mg/m^3;取消烟气再热系统,并将3台冷却水循环泵的配置优化为20%、30%、50%后,烟羽治理系统增加的厂用电率由原来的0.161%~0.205%降至0.0566%~0.0695%。本文可为同类型机组烟羽治理系统的安全经济运行提供指导。The process design and operation situation of as moke plume treatment retrofitting project in a power plant,as well as the design features,operation situation and optimization scheme of the smoke plume control system are introduced.In the optimization scheme,the thin-walled elliptical titanium tubes arranging in line are adopted,which can greatly reduce the resistance of the flue gas condenser.The condensate water is discharged into the cooling tower directly,which can greatly simplify the condensate system.The mass concentration of dissolved solids in condensed water is 41~53 mg/L,the removal amount of SO3 by flue gas condenser is 0.503~0.696 mg/m^3,and that of condensable particles is 0.797~1.169 mg/m^3.After eliminating the flue gas reheater and optimizing the configuration of cooling water circulating pump to 20%,30%and 50%,the increased service power consumption rate of the smoke plume control system will be reduced from 0.161%~0.205%to 0.0566%~0.0695%.This paper can provide guidance for the safe and economical operation of smoke plume control system for the same type units.

关 键 词：烟羽治理 烟气冷凝器 烟气再热器 厂用电率 可凝结颗粒物 SO3 冷却水循环泵 

分 类 号：TM621.29[电气工程—电力系统及自动化] X701.2[环境科学与工程—环境工程]