The invention relates to a process for purifying synthesis gas, comprising at least one stage for separating the crude synthesis gas to be treated into at least two effluents, namely a first part and a complementary part, in which the said first part is subjected to a carbon monoxide conversion stage with steam and the said complementary part is subjected to a COS and HCN catalytic hydrolysis stage, the two gas flows, namely the first part and complementary part, are then each treated separately in two stages intended to remove acid gases such as CO2 and H2S, by washing with aqueous solutions of specific amines, before a recombination stage of the two treated effluents.
本发明涉及一种净化合成气的工艺,包括至少一个阶段,用于将待处理的粗合成气分离成至少两种流出物,即第一部分和补充部分,其中所述第一部分经过蒸汽
一氧化碳转化阶段,所述补充部分经过 C
OS 和 HCN 催化
水解阶段、然后分别对第一部分和补充部分的两股气流进行两个阶段的处理,目的是通过使用特定胺的
水溶液进行洗涤来去除
CO2 和
H2S 等酸性气体,然后再对这两股处理过的废
水进行重新混合。