A process for removing CO2 and/or H2S from a gas comprising the steps of:
(a) contacting the gas in an absorber with an absorbent composition at a temperature in the range from 5 to 60°C, wherein the absorbent composition absorbs at least part of the CO2 and/or H2S, to produce a CO2 and/or H2S lean gas and a CO2 and/or H2S rich absorbent composition;
(b) removing at least part of the CO2 and/or H2S from the CO2 and/or H2S rich absorbent composition in a regenerator operated at a temperature below 100°C, to produce a CO2 and/or H2S rich gas and a CO2 and/or H2S lean absorbent composition;
wherein the absorbent composition comprises a polyamine having 3 to 5 amine functions, a tertiary monoamine and water; and wherein the molar ratio of the polyamine having 3 to 5 amine functions to the tertiary monoamine is equal or less than 4:1.
一种从气体中去除
CO2 和/或
H2S 的工艺,包括以下步骤
(a) 在吸收器中将气体与吸收剂组合物在 5 至 60°C 的温度范围内接触,其中吸收剂组合物吸收至少部分 和/或 ,以产生 和/或 贫气和富 和/或 吸收剂组合物;
(b) 在温度低于 100°C 的再生器中从富含 和/或 的吸收剂组合物中除去至少部分 和/或 ,生成富含 和/或 的气体和富含 和/或 的吸收剂组合物;
其中吸收剂组合物包括具有 3 至 5 个胺功能的
多胺、叔单胺和
水;具有 3 至 5 个胺功能的
多胺与叔单胺的摩尔比等于或小于 4:1。