US 11,703,278 B2
Liquefied natural gas compression system
Keizo Yoneda, Houston, TX (US); Peter Clifford Rasmussen, Gilbert, AZ (US); Bernard Quoix, Idron (FR); Takeshi Hataya, Hiroshima (JP); and Yoshinori Matsubara, Lake Mary, FL (US)
Assigned to Mitsubishi Heavy Industries Compressor Corporation, Tokyo (JP)
Filed by MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION, Tokyo (JP)
Filed on Jun. 19, 2020, as Appl. No. 16/906,831.
Prior Publication US 2021/0396464 A1, Dec. 23, 2021
Int. Cl. F25J 1/02 (2006.01); F25J 1/00 (2006.01); F01K 17/00 (2006.01); F01K 23/10 (2006.01)
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
OG exemplary drawing
 
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.