| 摘要 |
Disclosed is a process for deacidising a non-aqueous feed comprising one of H2S, CO2, COS, CS2, disulphides and/or mercaptans, comprising a. an absorption step contacting the feed in countercurrent with an aqueous absorbent solution, forming a product reduced in the acid compounds and a liquid absorbent solution enriched with acid compounds, b. a regeneration step treating the enriched solution from step a) to release acid compound, thereby forming a lean absorbent solution and a stream containing the acid compound, and c. recycling at least part of the lean solution from step b) to step a), characterised in that step a) is performed at a pressure of at least 5.0 bar gauge, and the absorbent solution comprises an absorbent selected from Ν,Ν,Ν'-trimethyl-N'-(hydroxyethyl)-1,3-propanediamine, N-(3-aminopropyl)-N-(dimethyl-amino)propyl-N',N'-dimethyl-1,3-propanediamine, and a mixture of methyl diethanol amine with tris(N,N,-dimethylamino propylamine in a weight ratio in the range of 25:75 to 95:5, and mixtures thereof. |
