公开(公告)号：DE2923012A1

公开(公告)日：1980-12-18

申请号：DE2923012

申请日：1979-06-07

Applicant: BASF AG

Inventor： VOLKAMER KLAUS DIPL CHEM DR ,  WAGNER ULRICH DIPL PHYS DR ,  WAGNER ECKHART DIPL CHEM DR

IPC: B01D53/52 ,  B01D53/14 ,  B01D53/26 ,  B01D53/77 ,  C10L3/10 ,  C10K1/16

Abstract: A process for simultaneously removing water and hydrogen sulfide from gases containing both of these by treating the gases, in an absorption zone under superatmospheric pressure, with polyethylene glycol dialkyl ethers as a solvent, stripping the hydrogen sulfide from the loaded solvent, obtained from the absorption zone, in a desorption zone, removing the water, taken up in the absorption zone, from the solvent and recycling the regenerated solvent to the absorption zone, wherein the solvent additionally contains from 0.01 to 20% by weight, based on the solvent mixture, of an alcohol or ether boiling in the range from 50 DEG to 140 DEG C.

公开(公告)号：DE3112661A1

公开(公告)日：1982-10-14

申请号：DE3112661

申请日：1981-03-31

Applicant: BASF AG

Inventor： WAGNER ECKHART DIPL CHEM DR ,  WAGNER ULRICH DIPL PHYS DR ,  VOLKAMER KLAUS DIPL CHEM DR ,  VODRAZKA WOLFGANG DIPL CHEM DR

IPC: B01D53/14 ,  C07C7/11 ,  C07C9/04 ,  C10G5/04 ,  C10K1/16

Abstract: A process for removing condensable aliphatic hydrocarbons and acidic gases such as H2S, CO2 and COS from natural gas containing these, wherein the natural gas is initially treated with polyethylene glycol dialkyl ethers, as the solvent, in a first absorption stage to effect absorption of the condensable aliphatic hydrocarbons; the natural gas drawn off from the first absorption stage is then treated with polyethylene glycol dialkyl ethers, as the solvent, under superatmospheric pressure in a second absorption stage, the acidic gases being completely or partly absorbed; the solvent charged with the condensable aliphatic hydrocarbons which is obtained from the first absorption stage is treated with water in an extraction stage, to form a hydrocarbon phase containing the condensable aliphatic hydrocarbons and an aqueous dialkyl ether phase, and the hydrocarbon phase is separated from the aqueous dialkyl ether phase. The solvent charged with acid gases which is obtained from the second absorption stage is regenerated by expansion and/or stripping in a regeneration stage and the regenerated solvent is recycled to the absorption.