摘要
对大庆30万吨/年合成氨利用已有空分的富裕氧气,在二段炉加入富氧扩产600t NH_3/d,配套一次低温变换,高压变换气联尿脱除CO_2的同时生产尿素,采用川化600t NH_3/d离心压缩机四大机组、高压甲烷化,泸天化的13MPa氨合成所组成的低投资、低气耗、低能耗装置,实现尿素生产自产自给。
To increase the capacity of 600 t NH3/d, excess oxygen which is available from existing air separation unit is put into the second reformer. Main items in the revamped process will be:all in one shifter,high pressure shifted gas goes to a unified urea unit to produce urea together with removal of CO2, four large compressors which are similar to ones used in Sichuan chemical plant of 600 t NH3/d,methanation, 13MP synthesis section. That will be a device of low investment,low natural gas consumption and low energy consumption.
出处
《化肥设计》
CAS
1997年第5期13-17,共5页
Chemical Fertilizer Design
关键词
氨合成
合成氨生产
技术改造
设计方案
excess oxygen richer air into the second reformer, all in one shifter, central compressors, high pressure methanation, 13 MP ammonia synthesis, urea production with HP shifted gas stripping method