4000t/d氨汽提尿素工艺设计优化  

Design Optimization of 4000 t/d Ammonia Stripping Urea Process

作　　者：陈书成 陈文文[1] Chen Shucheng;Chen Wenwen(Beijing Huafu Engineering Co.,Ltd.,Beijing,102600)

机构地区：[1]北京华福工程有限公司,北京102600

出　　处：《当代化工研究》2022年第11期157-159,共3页Modern Chemical Research

摘　　要：乌兰煤炭集团有限责任公司年产135万吨合成氨、240万吨尿素项目一期工程为年产120万吨(4000t/d)小颗粒尿素装置,是迄今世界最大单系列尿素装置,本装置采用氨汽提工艺。针对初步设计不尽合理的方面,我方进行了设计优化,主要包括3方面:中压氨吸收器/中压惰洗塔、蒸汽冷凝液系统和造粒塔规格尺寸的设计优化。通过设计优化,降低了原料消耗,回收了多余热量,降低了操作成本,而且造粒的生产运行更稳定。Wulan Coal Group Co.,Ltd.produces 1.35 million tons of synthetic ammonia and 2.4 million tons of urea each year.The first phase of the project is a small particle urea plant with an annual output of 1.2 million tons(4,000 t/d),which is the largest single series urea plant in the world so far.The plant adopts ammonia stripping process.In view of the unreasonable design of the preliminary design,we have optimized the design,mainly including 3 aspects:medium pressure ammonia absorber/medium pressure inert washing tower,steam condensate system and the design optimization of the size of the granulation tower.Through design optimization,raw material consumption is reduced,excess heat is recovered,operating costs are reduced,and granulation production runs more stable.

关 键 词：尿素 氨汽提 优化 

分 类 号：TQ441.4[化学工程—化学肥料工业]