SEPARATION OF GASES CONTAINING SF6

摘要

According to the invention, it is possible to separate gas mixtures comprise d of SF6 and N2, which, for example, have been used as insulating filling gas for underground cables, for insulating gas window panes or as filling gas us ed in automobile tires, and to separate SF6/air mixtures which have been used a s protective gas during magnesium casting. Said mixtures can be separated by bringing them into contact with hydrophobic zeolites of a certain pore size used as a selective adsorbing agent for absorbing sulfur hexafluoride. In instances of a higher SF6 concentration, the mixture is preferably first of all subjected to a membrane separation method, and the permeate is brought into contact with the adsorbing agent. The invention also relates to a devic e for carrying out the method. The method can also be used for separating SF6 from waste gases.