METHOD OF PREPARING OF NATURAL GAS AND AUTOMOBILE GAS FILLING COMPRESSOR STATION Russian patent published in 2008 - IPC F17C5/02 F25J3/08 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas industry, particularly to facilities for natural gas treatment. The method of natural gas preparation includes supply of natural gas with source excessive pressure to the facility, preliminary cleaning of gas from condensed moisture and mechanical impurities and drying of gas by means of its cooling and removal of condensed moisture. Cooling of gas is carried out in two stages, at that, the second stage of gas cooling is performed by introducing of liquefied gas directly into the flow of gas being cooled, while at the first stage cooling is performed by heat exchange via a heat exchanging surface between the supplied gas and gas obtained at the second stage of cooling, and removal of condensed moisture is done after the second stage of cooling. At the automobile gas filling compressor station (AGFCS) downstream of gas, a unit of preliminary cleaning of natural gas, the first reservoir of a cooling unit, a mixer, a facility for removal of condensed moisture, the second reservoir of the cooling unit and units for compremiring, accumulating and charging of tanks are successively connected to each other. The reservoir for storage of liquefied gas is connected to the mixer of cooled and liquefied gas.

EFFECT: facilitating stabilisation of gas composition for contents of water vapours after gas preparation; simplification of its design and automation, reducing of metal consumption of AGFCS and operational costs.

4 cl, 1 dwg