CRYOGENIC REFRIGERANT CIRCULATION SYSTEM AND LIVE REFLUX SUPPLY Russian patent published in 2023 - IPC F25J3/06 C10G5/06 

FIELD: oil and gas industry.

SUBSTANCE: auxiliary equipment for cryogenic distillation towers used in the oil and gas industry. The invention relates to a system for circulating a cryogenic refrigerant and supplying live reflux. The system includes a compressor, an air cooler, a multi-flow heat exchanger, a reducing device, and is connected to the demethanizer by a live reflux supply line. The cryogenic refrigerant circulation system is equipped with a cryogenic separation gas supply line and a balance gas outlet line, and the cryogenic refrigerant circulation circuit includes a compressor, an air cooler, a direct run of a multi-flow heat exchanger, a reducing device, a separator equipped with a methane fraction outlet line as a live reflux and a stripping gas outlet line, which is connected to the cryogenic separation gas supply line, forming a cryogenic refrigerant line, on which the return flow of the multi-flow heat exchanger, the balance gas outlet line branch and the compressor are located.

EFFECT: reduced power of dynamic equipment.

1 cl, 1 dwg