申请人:Kabushiki Kaisha Toshiba
公开号:EP2468385A2
公开(公告)日:2012-06-27
An acid gas absorbent of which recovery amount of acid gas such as carbon dioxide is high, and an acid gas removal device and an acid gas removal method using the acid gas absorbent are provided. The acid gas absorbent of the embodiment comprising at least one type of tertiary amine compound represented by the following general formula (1).
(In the above-stated formula (1), either one of the R1, R2 represents a substituted or non-substituted alkyl group of which carbon number is 2 to 5, and the other one represents a substituted or non-substituted alkyl group of which carbon number is 1 to 5. The R3 represents a methyl group or an ethyl group, and the R4 represents a hydroxyalkyl group. The R1, R2 may either be the same or different, and they may be coupled to form a cyclic structure.)
The acid gas aborbent may also be a secondary amine.
本发明提供了一种二氧化碳等酸性气体回收量高的酸性气体吸收剂,以及使用该酸性气体吸收剂的酸性气体去除装置和酸性气体去除方法。本实施例中的酸性气体吸收剂包含至少一种由以下通式(1)表示的叔胺化合物。
(在上述式(1)中,R1、R2 中的任一个代表碳数为 2 至 5 的取代或非取代烷基,另一个代表碳数为 1 至 5 的取代或非取代烷基。R3 代表甲基或乙基,R4 代表羟烷基。R1、R2 既可以相同,也可以不同,它们可以联接形成环状结构)。
酸性气体吸收剂也可以是仲胺。