ES423710A1 - Procedure to separate acid gases of gaseous hydrocarbons. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Procedure for separating acid gases from gaseous hydrocarbons, in which the gaseous hydrocarbons are contacted, in an absorption zone, with a lean, aqueous, amine absorption solution, to separate the acid gases from them, thus forming mode an aqueous rich amine solution, which contains C4 unsaturated hydrocarbons and heavier as a result of contact of the aqueous poor amine solution with the gaseous hydrocarbon in the absorption zone; and wherein the aqueous rich amine solution is regenerated by separation of the amine to convert it into a poor aqueous amine solution; characterized in that it comprises: supplying the aqueous solution of rich amine from the absorption zone to a preseparation zone of rich amine; supplying a low molecular weight, non-condensable gas separating medium to an amine rich pre-separation zone; passing the low molecular weight non-condensing gas separating medium, as well as the aqueous rich amine solution, through the preseparator, in countercurrent flow; separating from the preseparation zone the low molecular weight non-condensing gas separating medium with the heavier unsaturated hydrocarbons separated from the aqueous rich amine solution; and supplying the aqueous amine rich solution, which has been pre-separated from C4 and heavier unsaturated hydrocarbons, to the amine separation facility. (Machine-translation by Google Translate, not legally binding)