FIELD: oil-and-gas industry.
SUBSTANCE: zeolite recovery gas treatment unit contains an absorber and a desorber of the unit of amine treatment of zeolite recovery gases from hydrogen sulphide with obtaining a marketable hydrogen sulphide used as raw materials for Claus process as a part of element sulphur production, an absorber and a desorber of the unit of alkaline treatment of zeolite recovery gases from mercaptan with separation of the latter in the desorber, unit of adsorptive drying and fractionation of mercaptan with obtaining of methylmercaptan sent to the unit for obtaining of methyl disulphide, and mix of ethyl mercaptan, propyl mercaptan and butyl mercaptan with separation in the fractionation unit of marketable ethyl mercaptan and mixes of propyl mercaptan and butyl mercaptan, also absorbers and desorber are fitted with nozzles of cross-flow type.
EFFECT: invention allows simultaneously to dry and purify hydrocarbon gas or gas condensate from sulphur-containing substances and to obtain a wide range of final products.
7 cl, 3 dwg
