氨法烟气脱硫装置氨回收率实证研究  

The Study on Recovery Rate of Ammonia Flue Gas Desulfurization Unit

作　　者：吴丽娟 邹敏[1] 王晓祎 董浩 WU Li-juan;ZOU Min;WANG Xiao-yi;DONG Hao(Jiangsu Province Key Laboratory of Environmental Engineering,Jiangsu Provincial Academy of Environmental Science,Nanjing 210036,China)

机构地区：[1]江苏省环境科学研究院江苏省环境工程重点实验室

出　　处：《环境科技》2019年第3期54-58,共5页Environmental Science and Technology

基　　金：江苏省环保科研课题(2017019)

摘　　要：氨法脱硫是一种高效、低耗能的湿法脱硫方式,其最大特点是可将污染物SO2资源化,得到副产硫酸铵产品。在实际工程中,氨法脱硫技术存在氨逃逸、副产物氧化率不高等问题,影响其脱硫效率和经济效益。本文首先介绍氨法脱硫技术的基本原理,并采用现场实测的方法对某热电联产项目3×440t/h燃煤锅炉烟气脱硫装置的氨回收率进行实证研究,进而分析造成氨回收率低的原因,旨在为推动氨法烟气脱硫技术的进一步发展提供参考意见。As an efficient and low-energy method, the ammonia desulfurization is characteristic of reutilizing sulfur dioxide to obtain the by-product of ammonium sulfate. However, the ammonia desulphurization technology faced problems such as ammonia escape and low oxidation rate of by-product and other problems which affect its desulfurization efficiency and economic benefit in real application. This paper first introduced the basic principle of ammonia desulfurization technology. Then based on the in-site measurement of a 3×440 t/h coal-fired boiler flue gas desulfurization unit of a cogeneration project, the empirical ammonia recovery rate was obtained. The reason for the low ammonia recovery rate was also analyzed to provide a guidance for the further development of desulphurization technology by ammonia method.

关 键 词：氨法脱硫 氨逃逸 氨回收率 

分 类 号：X5[环境科学与工程—环境工程]