The article discusses the two methods of the removal of trace CO in shift conversion gas,it also gives some reference for selecting the synthesis gas purification process in ammonia plants.

• 本文探讨了脱除变换气中微量CO的两种方法，即液氮洗法或低变、甲烷化法，为合成氨装置净化方法的选择提供了借鉴。