Producing power from pressurized liquefied natural gas

Details Producing power from pressurized liquefied natural gas Producing power from pressurized liquefied natural gas

1999-03-26

2000-07-18

Bennett, Henry

Refrigeration

Storage of solidified or liquified gas

Liquified gas transferred as liquid

F17C 902

Patent

active

060890282

ABSTRACT:
A process for using the cold of pressurized liquefied natural gas (PLNG) to compress boil-off vapors produced by handling of liquefied natural gas to produce a higher pressure gas product and at the same time produce power that preferably provides at least part of the power for the process. The PLNG is pressurized, passed to a first heat exchanger for vaporization, and the vaporous material is passed to a second heat exchanger for further heating to produce a first gas product. A refrigerant is circulated in a closed cycle through the first heat exchanger to heat the PLNG, through a pump to pressurize the refrigerant, through a second heat exchanger to vaporize the refrigerant, and through a work-producing device to generate energy. Boil-off gas is compressed and passed through the first heat exchanger, further compressed, and then passed through the second heat exchanger to produce a second gas product.

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