he removal of H2S gas from a normally gaseous stream is accomplished with an absorbent solution containing a diaminoether wherein both amino groups either are severely sterically hindered secondary amino groups or are tertiary amino groups or wherein one amino group is a severely sterically hindered secondary amino group and the other amino group is a tertiary amino group. In a preferred embodiment the gaseous stream also contains CO2, and the H2S is selectively removed from the stream.
A class of novel diaminoethers is particularly useful in the process for selectively removing H2S.
使用含有二
氨基醚的吸收液可以从正常气态气流中去除
H2S 气体,二
氨基醚中的两个
氨基基团要么是受严重立体阻碍的仲
氨基基团,要么是叔
氨基基团,或者一个
氨基基团是受严重立体阻碍的仲
氨基基团,另一个
氨基基团是叔
氨基基团。在一个优选的实施方案中,气流中还含有
CO2, 被选择性地从气流中去除。
在选择性去除 的工艺中,一类新型二
氨基
乙烷特别有用。