稀磷酸吸收法处理三乙胺尾气的生产实践  

Production practice of dilute phosphoric acid absorption method to treatmenting three ethylamine tail gas

作　　者：张波 ZHANG Bo(Sinopec Nanjing Chemical Research Institute Co. ,Ltd. ,Nanjing,Jiangsu,210048, China)

机构地区：[1]中石化南京化工研究院有限公司,江苏南京210048

出　　处：《硫酸工业》2018年第4期24-26,共3页Sulphuric Acid Industry

摘　　要：介绍了用稀磷酸代替纯水吸收三乙胺尾气的工艺原理及工艺流程。研究了影响三乙胺吸收的主要因素循环吸收液p H值和密度,当p H值大于7、密度大于1.18时,必须对循环液罐内循环吸收液进行置换处理。外排废液经处理后三乙胺质量分数在1%以下,经过后续脱轻精制后已可回收利用。稀磷酸喷淋吸收三乙胺尾气装置投运后尾气在线VOCs达到国家环保排放标准。The process principle and technological process of absorbing three ethylamine tail gas by dilute phosphoric acid instead of pure water are introduced.The main lectors attecting the absorption of three ethylamine are the pH value and density of circulating ab- sorption fluid. When the pH value is greater than 7 and the density is more than 1.18 ,it is necessary to replace the circulating liquid in the circulating liquid tank.Afler treatment, the mass fraction of three ethylamine is less than 1% afler treatment, and it can be recycled afler subsequent removal of light and refining. Diluted phosphoric acid spray absorption three ethylamine tail gas device aider commissio- ning, tail gas online VOCs reaches the national environmental protection emission standard.

关 键 词：磷酸 三乙胺 尾气处理 喷淋吸收 循环吸收液处理 

分 类 号：TQ111.17[化学工程—无机化工] X781[环境科学与工程—环境工程]