Polyamines, synthesis process thereof and use of same for the selective elimination of H2S from a gaseous effluent comprising CO2
申请人:IFP Energies nouvelles
公开号:US10710021B2
公开(公告)日:2020-07-14
The invention concerns novel polyamines having formula (I) obtained from the reaction between a polyol diglycidylether and piperazine:
in which n is a whole number between 0 and 30, R1 has different forms, R2 has formula (g5), and R2 has formula (g6) when n=0
R6: H, C1-C6 alkyl or hydroxyalkyl radical,
R7: C1-C6 alkyl or hydroxyalkyl radical,
R6 and R7 may be connected together to form a heterocycle having 5, 6, 7 or 8 atoms when
R6 is other than H,
R8: H, C1-C4 alkyl or hydroxyalkyl radical.
The invention also concerns their preparation method and their use in an absorbing solution based on amines in order to selectively eliminate H2S from a gaseous effluent containing H2S and CO2.
本发明涉及由多元醇二缩水甘油醚和哌嗪反应得到的具有式 (I) 的新型多胺:
其中 n 为 0 至 30 之间的整数,R1 具有不同的形式,R2 具有式 (g5),当 n=0 时,R2 具有式 (g6)
R6:H、C1-C6 烷基或羟烷基、
R7:C1-C6 烷基或羟基烷基、
R6 和 R7 可连接在一起,形成具有 5、6、7 或 8 个原子的杂环,当
R6 不是 H
R8:H、C1-C4 烷基或羟烷基。
本发明还涉及它们的制备方法及其在基于胺的吸收溶液中的用途,以便从含有 H2S 和 CO2 的气态流出物中选择性地消除 H2S。