Method and apparatus for cooling a gas

Details Method and apparatus for cooling a gas Method and apparatus for cooling a gas

1974-07-03

1976-03-23

O'Dea, William F.

Refrigeration

Storage of solidified or liquified gas

Storing solidified gas

62 23, 62512, F17C 1300

Patent

active

039452140

ABSTRACT:
The present invention relates to methods and a system for cooling a gas for the purpose of effecting the liquefaction of one or more components of this gas. The invention is more precisely concerned with the prevention of losses by evaporation from the tanks of methane-carrier ships during the transport of liquid methane. For this purpose, the evaporation leakages from the tanks in gaseous form are re-liquefied by ad hoc liquefaction apparatus aboard the ship. The apparatus utilizes a cascade frigorific cycle of the open type working with a single refrigerant having a plurality of components. The refrigerant comprises the pure substance to be re-liquefied, and at least one heavy component, less volatile than the said substance, and absent from the composition of the gas treated.

REFERENCES:
patent: 3541802 (1970-11-01), Swearingen
patent: 3702063 (1972-11-01), Etzbach et al.
patent: 3729945 (1973-05-01), Linnett

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