浅析氨合成尾气的回收利用技术  

Analysis of the Recovery and Utilization Technology for Tail Gas in Ammonia Synthesis

作　　者：陈嘉彪 李军利 CHEN Jiabiao;LI Junli(Gansu Jinchang Chemistry Industry Group Co.,Ltd.,Jinchang 737202,China)

机构地区：[1]甘肃金昌化学工业集团有限公司,金昌737202

出　　处：《化工时刊》2024年第5期39-43,共5页Chemical Industry Times

摘　　要：作者论述了合成氨放空气、弛放气等尾气的回收利用技术及改造。技术改造前,放空气和弛放气仅作为加热炉的燃料气进行燃烧利用,改造后对放空气和弛放气中的有价值原料氢气与成品气氨进一步回收,氢气进入生产系统继续进行氨合成,气氨回收为液氨和氨水作为产品出售。改造后弛放气中气氨回收率达到83%,放空气中氢气残余降至8.8%。改造后的系统比原系统的处理收益大幅度增加,达到了资源综合回收利用的目的,实现了经济效益最大化。This paper discusses recycling technologies of exhaust emissions like venting gas and purge gas in the ammonia synthesis system.Before the technical transformation,both venting and purge gas were burned as the fuel gas of the heating furnace.After transformation,the valuable raw materials in venting and purge gas are further recycled;hydrogen is introduced into the production system to sustain ammonia synthesis,and the gaseous ammonia is recovered into liquid ammonia and ammonia water for sale as the final product.Owing to the pivotal technological transformation,the recycling rate of gaseous ammonia in purge gas reaches 83%,while the residual rate of hydrogen in venting gas drops to 8.8%.The system after transformation exhibits higher gains compared to the original system,achieving comprehensive recycling of recourses and realizing maximized economic benefits.

关 键 词：氨合成系统 尾气 氨水 氢气回收 氨回收 

分 类 号：X701[环境科学与工程—环境工程] TQ113.29[化学工程—无机化工]