LOW-TEMPERATURE CONDENSATION UNIT FOR PROCESSING ASSOCIATED PETROLEUM GAS Russian patent published in 2020 - IPC F25J3/06 C10G5/06 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to equipment for field preparation of associated petroleum gas and can be used in oil industry. Invention relates to installation of low-temperature condensation for preparation of associated petroleum gas including located on supply line of associated petroleum gas cooling unit with heat exchanger and refrigerating machine and separator, connected to demethanizer by gas supply lines and separation residue with reducing devices, wherein demethanizer bottom is connected by demethanized condensate supply line to fractionation unit equipped with hydrocarbon fraction discharge lines, and is equipped with heater, and the top of the demethanizer is equipped with a discharge line of the stripped gas connected to the heat exchanger. On the line of associated petroleum gas supply in front of the cooling unit there located is abutment of off-gas supply line, compressor station and cleaning and drying unit, multi-flow heat exchanger is installed as heat exchanger, connected to cooling machine by coolant input / output lines, recuperative heat exchanger arranged on reduction line of stripped gas is arranged before reduction device in stripped gas supply line, and the bottom demethanizer heater is located on the cooling unit bypass, wherein the fractionation unit is equipped with an exhaust gas feed line.

EFFECT: high extraction of heavy components and low power consumption.

1 cl, 1 dwg