Mechanism for firing gas turbines with liquefied natural gas

Details Mechanism for firing gas turbines with liquefied natural gas Mechanism for firing gas turbines with liquefied natural gas

1993-10-15

1995-03-28

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Using special fuel or oxidizer

60728, 62 503, 165146, F02C 322, F02C 7143

Patent

active

054005884

ABSTRACT:
Disclosed herein is a method of firing a gas turbine with LNG which is designed to store the "cold" of LNG in an the LNG vaporizer. The method comprises supplying liquefied natural gas through heat exchanger tubes in the LNG vaporizer, thereby gasifying the liquefied natural gas by heat exchange with a heat transfer medium recycled through the LNG vaporizer and an air precooler, and cooling the air in the air precooler by heat exchange with the heat transfer medium cooled by the liquefied natural gas when the turbine load is high, and suspending the recycling of the heat transfer medium through the LNG vaporizer and air precooler, thereby causing the heat transfer medium to freeze on the outside of the heat exchanger tubes (for the storing of freezing latent heat) by the "cold" of the liquefied natural gas supplied, when the turbine load is low, and using the freezing latent heat (stored by the freezing of the heat transfer medium) as a "cold" source to cool air through the heat transfer medium, when the turbine load is high.

REFERENCES:
patent: 2718753 (1955-09-01), Bridgeman
patent: 3720057 (1973-03-01), Arenson
patent: 3788392 (1974-01-01), Abbott et al.
patent: 3978663 (1976-09-01), Mandrin et al.
patent: 5199486 (1993-04-01), Balmer et al.

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