| 摘要 |
Continuous removal of S-containing anions from alkaline solutions used washing gases Sulphite, sulphate, thiosulphate and thiocyanate anions are removed from alkaline solution used for removing H2S or COS from gas mixture or CO2 from S-containing gases by passing the spent alkaline solution through an anion exchanger. This process is much more convenient than the usual distillation under vacuum; it is esp. suitable for the regeneration of alkanolamine solution, or N-methylpyrrolidone. |
