A process for increasing the selectivity of an alkanolamine absorption process for selectively removing hydrogen sulfide (H
2
S) from a gas mixture which also contains carbon dioxide (CO
2
) and possibly other acidic gases such as COS, HCN, CS
2
and sulfur derivatives of C
1
to C
4
hydrocarbons, comprises contacting the gas mixture with a liquid absorbent which is a severely sterically hindered capped alkanolamine. The improvement in selectivity is achieved at the high(er) pressures, typically least about 10 bara at conditions nearing the H
2
S/CO
2
equilibrium at which CO
2
begins to displace absorbed hydrosulfide species from the absorbent solution.
A process for preparing secondary aminoether alcohols
申请人:EXXON RESEARCH AND ENGINEERING COMPANY
公开号:EP0147990A1
公开(公告)日:1985-07-10
@ The present invention relates to a process for selectively preparing severely sterically hindered secondary aminoether alcohols by reacting a primary amino compound with a polyalkylene ether glycol in the presence of a hydrogenation catalyst at elevated temperatures and pressures. The severely sterically hindered secondary aminoether alcohols are useful in acid gas scrubbing processes, particularly in the selective removal of H2S from gaseous streams containing CO2 and H2S.
本发明涉及一种工艺,该工艺通过在氢化催化剂存在下,在升高的温度和压力下使伯氨基化合物与聚亚烷基醚二醇反应,选择性地制备严重立体受阻的仲氨基醚醇。 严重立体受阻的仲氨基醚醇可用于酸性气体洗涤工艺,特别是从含有 CO2 和 H2S 的气流中选择性地去除 H2S。
A process for the removal of H2S from gaseous mixtures using diaminoethers
申请人:EXXON RESEARCH AND ENGINEERING COMPANY
公开号:EP0087856B1
公开(公告)日:1986-02-26
Secondary and tertiary amino alcohols
申请人:EXXON RESEARCH AND ENGINEERING COMPANY
公开号:EP0084943B1
公开(公告)日:1986-04-02
VERWENDUNG UND VERFAHREN ZUR KORROSIONSVERMINDERUNG