METHOD OF GAS CONDENSATE DEPOSITS COMPLEX PROCESSING WITH C+ HYDROCARBONS DEEP EXTRACTION AND PLANT FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC B01D19/00 F25J3/06 

FIELD: gas industry.

SUBSTANCE: invention relates to field of gas industry and can be used in field gas condensate deposits processing. Field gas condensate deposits production preparation method involves formation mixture separation with production of sour gas and unstable gas condensate, sour gas adsorption dehydration and unstable gas condensate deethanization, dried gas deep cooling with production of marketable natural gas and broad fraction of broad fraction of light hydrocarbons (BFLH) and BFLH low-temperature deethanization. Plant includes, at least, one slug catcher, which gas outlet is connected with absorption dehydration unit through cooling device, and condensate output is connected with tank-separator, which gas output through first gas pumping unit is also connected to absorption dehydration unit, which output is connected through first and second recuperative heat exchangers cooling channel and intermediate separator with turbo expanding assembly throttling device, which output is connected with low-temperature separator. Outputs of intermediate and low-temperature separators for condensate are connected via recuperative heat exchanger with low-temperature deethanization tower, to output of which are in series connected reflux exchanger, third recuperative heat exchanger, second gas pumping unit and marketable dried gas discharge line. Low-temperature separator gas output is in-series connected with reflux exchanger tube side and with marketable dried gas discharge line.

EFFECT: reducing marketable gas dew point and minimization of hydrocarbons C₃+ loss by deethanization gases.

5 cl, 1 dwg