FIELD: gas processing.
SUBSTANCE: present invention relates to variants of an associated petroleum gas (APG) processing unit producing a wide light hydrocarbon fraction (WLHF). One of the variants of the unit includes a compressor station located on an APG and stabilization gas mixture supply line, a fractional column with an external cold source, a stabilization apparatus, a separator with gas and residue outlet lines and a unit for drying and/or purifying the gas from hydrogen sulfide and mercaptans. A recuperative heat exchanger and a separator equipped with a residue outlet line with a reducing apparatus and a gas outlet line is located after the compressor station, wherein located on said line are the gas drying and/or purifying unit and the fractional column with an external cold source equipped with a reflux outlet line with a reducing apparatus and a reflux gas outlet line whereon a recuperative heat exchanger equipped with a dry stripped gas outlet line, additionally, reduced separation residue and reflux outlet lines are connected with a three-phase separator as a stabilization apparatus equipped with water condensate, stabilization gas with a reducing apparatus and WLHF outlet lines.
EFFECT: proposed variants allow reducing metal consumption of the unit and reducing power consumption for cooling compressed gas.
4 cl, 4 dwg
