火力发电厂脱硝还原剂液氨改尿素工程工艺方案比选研究  

Comparison and Study of Process Plans for Replacing Liquid Ammonia with Urea as Denitration Reducing Agent in Thermal Power Plant

作　　者：徐康 XU Kang

机构地区：[1]国能江苏电力工程技术有限公司,江苏镇江212006

出　　处：《化工设计通讯》2024年第8期119-122,共4页Chemical Engineering Design Communications

摘　　要：目前国内火力发电厂机组脱硝普遍采用低氮燃烧器+选择性催化还原(SCR)工艺,以往脱硝还原剂通常为液氨,属于重大危险源。随着安全环保要求的日益提高,需要对制氨工艺进行改造,消除重大危险源。以某火力发电厂的相关改造工程为例介绍了尿素制氨的两种常用工艺,通过对两种工艺方案的投资和运行成本对比得出最优方案,并对改造前后的经济和社会效益进行了分析。本文的研究方法和结论对其他类似改造工程具有良好的借鉴和参考意义。At present,the process of low nitrogen burner and selective catalytic reduction(SCR)is widely used in denitration of thermal power plants in china.In the past,the reductant for denitration was usually liquid ammonia,which was a major hazard source.With the increasing requirements of safety and environmental protection,it is necessary to reform the ammonia production process to eliminate major hazards.In this paper,two common processes of ammonia production from urea are introduced by taking the reconstruction project of a thermal power plant as an example.By comparing the investment and operating cost of the two processes,the optimal scheme is obtained,and the economic and social benefits before and after the reconstruction are analyzed.the research methods and conclusions in this paper have good reference significance for other similar reconstruction projects.

关 键 词：脱硝还原剂 工艺方案 投资与运行成本 效益对比 

分 类 号：X773[环境科学与工程—环境工程]