Absorbing Solution, Method and Device for Absorbing CO2 or H2S or Both

摘要

An absorbing solution according to the present invention is an absorbing solution that absorbs CO₂ or H₂S in gas or both of CO₂ and H₂S. The absorbing solution is formed by adding desirably 1 to 20 weight percent of tertiary monoamine to a secondary-amine composite absorbent such as a mixture of secondary monoamine and secondary diamine. Consequently, it is possible to control degradation in absorbing solution amine due to oxygen or the like in gas. As a result, it is possible to realize a reduction in an absorption loss, prevention of malfunction, and a reduction in cost. This absorbing solution is suitably used in an apparatus for removing CO₂ or H₂S or both of CO₂ and H₂S.