CPC F25J 1/0283 (2013.01) [F01K 17/00 (2013.01); F01K 23/10 (2013.01); F25J 1/0022 (2013.01); F25J 1/0282 (2013.01)] | 13 Claims |
1. A liquefied natural gas compression system, comprising:
a first gas turbine that drives a rotary machine;
a first steam boiler comprising a first heat recovery steam generator that recovers heat from exhaust gas from the first gas turbine;
a first steam turbine that drives a first refrigerant compressor;
a common header steam line through which steam from the first steam boiler flows to an inlet of the first steam turbine;
an auxiliary steam line; and
a letdown valve that connects the common header steam line to the auxiliary steam line and that opens in response to pressure of the common header steam line exceeding a predetermined threshold value.
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