Simple method and apparatus for the partial conversion of natura

Details Simple method and apparatus for the partial conversion of natura Simple method and apparatus for the partial conversion of natura

1998-09-18

2000-07-11

Capossela, Ronald

Refrigeration

Cryogenic treatment of gas or gas mixture

Liquefaction

62619, F25J 100

Patent

active

060855479

ABSTRACT:
A method and apparatus for the partial conversion of natural gas to liquid natural gas. Natural gas, at a high pressure and free of impurities which would hinder the formation of liquid natural gas, is split into first and second flow portions. The first flow portion is conducted through a first heat exchanger and thereafter through a second heat exchanger. From the second heat exchanger, the first flow portion is throttled into a collector, wherein part thereof flashes to liquid natural gas and a part thereof constitutes a cold saturated vapor to be vented from the collector. The vent remainder serves as a coolant for the second heat exchanger. The second flow portion passes through a restrictor and is thereby cooled. The vent remainder from the second heat exchanger is joined with the cooled second flow portion and this combination serves as a coolant for the first heat exchanger before it is conducted to a receiver.

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