RECUPERATIVE METHOD OF FILLING HIGH-PRESSURE CYLINDERS WITH METHANE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC F17C5/06 

FIELD: technological processes.

SUBSTANCE: invention relates to gas power engineering and makes it possible to fill containers with methane-containing high-pressure gas (balloons, movable gas recipients) suitable for use as a source of gas engine fuel in vehicles. Natural gas from city network with pressure from 0.6 MPa to 1.2 MPa is used simultaneously as compressed gas and as drive gas of pressure amplifiers. Compressible gas is compressed in several stages with stepped reduction of compression ratio in range from 5.5 to 2.5, compressed gas after each compression stage is cooled and dried in recuperative heat exchangers, by directing into the heat exchangers the exhaust gas cooled due to adiabatic expansion and providing the temperature of the compressed gas in the compression chambers of the pressure amplifiers within (293÷413) K, and the pressure at the output of the last amplifier is within (25÷35) MPa. Gas used in the pressure booster drives is directed to the low-pressure consumer gas-distributing network P<0.05 MPa.

EFFECT: higher economic efficiency and safety of methane filling of high-pressure cylinders.

2 cl, 4 dwg