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超低排放下CFB锅炉内外脱硫系统匹配优化 预览

Matching optimization of internal and external desulfurization system of CFB boiler under ultra-low emission
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摘要 为满足超低排放要求,CFB锅炉多采用炉内外两级脱硫系统。通过理论分析,最优的内外脱硫匹配方案,使整个机组在排放达标的前提下,脱硫、脱硝物料消耗及锅炉炉效的综合经济性最高。以此建立数学分析模型,对已完成超低排放改造的机组A、B,根据实炉试验测试的数据,确定不同负荷下最优的脱硫分配比例,用以指导运行,以期在满足排放要求的前提下,降低机组能耗。对未进行超低排放改造的机组C,根据不同的边际条件,进行最优脱硫分配比例的理论推算,从而为超低排放改造方案的选择提供依据。结果表明,不同负荷和硫含量下,最优的脱硫比例并不相同,据此优化运行,预计机组A全年节约费用108万元,机组B全年节约费用140万元。 In order to meet the requirements of ultra-low emission,CFB boilers mostly adopt two-stage desulfurization system.Through theoretical analysis,there is an optimum matching scheme of internal and external desulfurization,so that the overall economy of the whole unit is the highest under the premise of emission compliance.A numerical analysis model was established based on the above analysis.For units A and B that had completed ultra-low emission renovation,the optimal desulfurization allocation ratio under different loads was determined according to the test data of actual furnace,so as to guide the operation and reduce the energy consumption of units on the premise of meeting the emission requirements.For unit C without ultra-low emission modification the optimal desulfurization allocation ratio in different boundary conditions was calculated theoretically,which provided a basis for the selection of ultra-low emission modification scheme.The results show that if the optimal desulfurization ratio is used,it is estimated that the example unit A saves 1.08 million yuan annually,and unit B saves 1.4 million yuan annually.
作者 张磊 苑广存 ZHANG Lei;YUAN Guangcun(不详)
出处 《电力科技与环保》 2019年第2期60-62,共3页 Electric Power Environmental Protection
基金 神华集团有限责任公司科技创新项目(SHJT-17-27).
关键词 CFB锅炉 超低排放 脱硫系统 建模优化 经济性 CFB boiler ultra low emission desulphurization system modeling optimization economy
作者简介 张磊(1989-),男,汉族,山东滨州人,工程师,主要从事电站锅炉的试验研究。E-mail:17055974@shenhua.cc.
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