GAS LIQUEFYING METHOD Russian patent published in 2007 - IPC F25J1/02 

FIELD: cryogenic technologies, possibly production of liquid cryogenic fuel.

SUBSTANCE: method for liquefying gas by means of liquid cooling agent is realized in heat exchanger having upper and lower tube volumes, upper and lower inter-tube spaces. Gas to be liquefied is fed to lower part of lower tube volume. Then from upper part of lower tube volume it is supplied through pipeline to upper part of upper tube volume. From lower part of upper tube volume liquefied gas through separator used for removing gaseous products is drained to storage tank. Liquid cooling agent is fed to lower inter-tube space and vapor of cooling agent is taken from upper inter-tube space for passing it alternatively through regenerators for further recovering. In regenerators cooled by means of vapor of cooling agent liquefied gas is preliminarily compressed before supplying it to lower tube volume.

EFFECT: improved manufacturing effectiveness due to lowered losses of liquefied gas and optimal usage of liquid cooling agent.

1 dwg