FIELD: oil and gas industry.
SUBSTANCE: invention relates to technology and equipment for preparation of hydrocarbon gases and can be used for stripping low-pressure associated oil gas in oil industry. Plant includes compressor 2, gas feed line 8, refluxer 4 mounted on supply line of compressed gas, provided with discharge lines for reflux 14 and compressed gas 12, equipped with heat-mass exchange sections, upper of which is equipped with discharge line for stripped gas 13 and reduced gas feed line 11, on which there is a reducing device 6, Gas feed line 8 is adjacent to stabilisation gas supply line 9 and refrigerator-separator 1, equipped with condensate discharge line 15 and connected with compressor 2 separation gas supply line, refluxer 4 is additionally equipped with heat-mass exchange section connected with compressed gas supply line, discharge lines for reflux 14 and condensate 15 are connected to separator 7, equipped with discharge lines for stabilised condensate 16 and stabilisation gas 9, and compressed gas discharge line is additionally fitted with second stage compressor 3 and cooler 5. Method implemented in said plant comprises gas compression, cooling compressed gas with an external cooling agent and reduced compressed gas under dephlegmation conditions to produce reflux and compressed gas, prior to compression gas is mixed with stabilisation gas, cooling and separation to produce condensate and separation gas, before cooling under dephlegmation conditions compressed gas is cooled with reflux in stabilisation conditions thereof, additionally, compressed, cooled, reduced and heated, wherein reflux and condensate are separated together to produce stabilisation gas and stabilised condensate.
EFFECT: high output of stripped gas due to compression of gas in a mixture with stabilisation gas and cooling compressed gas under dephlegmation conditions additionally with compressed cooled compressed gas, as well as reduction of pressure of saturated vapour of condensate due to stabilisation and separation.
2 cl, 1 dwg
