基于SCR脱硝的尿素水解制氨生产系统设计优化探讨  

Discussion on Design Optimization of Ammonia Production System by Urea Hydrolysis in SCR Denitration

作　　者：孟利宏 MENG Lihong(Sinochem Environmental Technology Engineering Co.,Ltd.,Shenyang 110000,China)

机构地区：[1]中化环境科技工程有限公司,辽宁沈阳110000

出　　处：《山东化工》2025年第3期228-232,共5页Shandong Chemical Industry

摘　　要：国内火力发电厂燃煤锅炉燃烧尾气脱除NO x基本采用液氨作为脱硝还原剂NH 3的来源,但作为重大危险源,液氨的储运受到严格的规定,随着消除国家级重大危险源的政策出台,一次投资和维护成本较低、运行稳定的尿素水解技术,已经成为各个火力发电厂备受欢迎的主要工艺路线,本文着重介绍了目前应用广泛的尿素水解制氨技术,以及在工程实际中尿素水解反应器的结构设计和常见问题的优化,以某火电厂已投运尿素水解制氨生产系统为例,研究了解采用尿素水解制氨系统在实际运行中遇到的典型问题,并提出相应设计优化和改进措施。At present,most of the denitration systems of coal-fired units in domestic thermal power plants use liquid ammonia as the source of NH 3,but liquid ammonia is a major hazard source,and the transportation and storage of liquid ammonia are strictly restricted.With the introduction of the policy of eliminating national major hazard sources,urea hydrolysis technology with low maintenance cost and stable operation has become a popular process route for each thermal power plant.This paper mainly introduces the current mainstream urea hydrolysis ammonia production technology,as well as the design of urea hydrolyzer in engineering practice and the optimization of common problems in operation.Taking the urea hydrolysis ammonia production system of a thermal power plant as an example,the paper studies and analyzes the problems encountered in the actual operation of ammonia production technology using urea hydrolysis,and the corresponding improvement measures puts forward.

关 键 词：SCR脱硝 还原剂 尿素水解 优化设计 

分 类 号：TQ116.2[化学工程—无机化工] X773[环境科学与工程—环境工程]