煤气发电两种脱硫脱硝技术的实践分析  

Practical Analysis of Two Desulfurization and Denitrification Technologies for Gas Power Generation

作　　者：郭军 胥海江 张鑫宇 祁艳莹 王欣 孟繁彬 GUO Jun;XU Haijiang;ZHANG Xinyu;QI Yanying;WANG Xin;MENG Fanbin(Power Department of HBIS Group Tangsteel Company,Tangshan,Hebei 063000,China)

机构地区：[1]河钢唐钢公司动力部,河北唐山063000

出　　处：《冶金动力》2024年第1期102-105,共4页Metallurgical Power

摘　　要：燃气锅炉在燃烧过程中会产生CO、CO_(2)、SO_(2)等有毒有害气体,对环境造成污染。近些年来,为提升我国生态环境建设,烟气脱硫脱硝技术得到了广泛应用。燃气锅炉脱硫脱硝技术主要有两种,分别是选择性的非催化还原法(SNCR)+固定床脱硫脱硝技术和选择性催化还原法(SCR)+小苏打干法(SDS)+布袋除尘脱硫脱硝技术,两种技术都可有效降低烟气中污染物的浓度。为确定唐钢新区目前采用的两种脱硫脱硝工艺的经济性和实用性,对两种技术生产运行成本、脱硫脱硝反应效率等进行分析对比,得出SNCR+固定床脱硫脱硝技术运行维护成本大、脱硫效率高;SCR+SDS+布袋除尘脱硫脱硝技术运行维护成本低、脱硝效率高的结论。Gas boilers produce CO,CO_2,SO_(2) and other toxic and harmful gases during the combustion process,causing pollution to the environment.In recent years,flue gas desulfurization and denitrification technology has been widely used in order to enhance the ecological environment in China.There are two main types of gas boiler desulfurization and denitrification technologies,which are SNCR+fixed bed desulfurization and denitrification technology and SCR+SDS+bag filter dust removal desulfurization and denitrification technology,both of which can effectively reduce the concentration of pollutants in the discharged flue gas.In order to determine the economy and practicability of the two desulfurization and denitrification processes currently used in Tangsteel New Area,two technologies were analyzed and compared in terms of production and operation costs,desulfurization and denitrification reaction efficiency,etc.,and it was concluded that SNCR+fixed bed desulfurization and denitrification technology has a large operation and maintenance cost with a high desulfurization efficiency.SCR+SDS+bag filter dust removal desulfurization and denitrification technology has low operation and maintenance cost with a high denitrification efficiency.

关 键 词：燃气锅炉 烟气 脱硫脱硝技术 

分 类 号：X773[环境科学与工程—环境工程]