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1. (WO2018077935) NATURAL GAS LIQUEFACTION SYSTEM INCLUDING AN INTEGRALLY-GEARED TURBO-COMPRESSOR

Pub. No.:    WO/2018/077935    International Application No.:    PCT/EP2017/077281
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Thu Oct 26 01:59:59 CEST 2017
IPC: F25J 1/00
F25J 1/02
Applicants: NUOVO PIGNONE TECNOLOGIE SRL
Inventors: BONGERMINO, Elvira
GRIMALDI, Angelo
IURISCI, Giuseppe
PELAGOTTI, Antonio
BALDASSARRE, Leonardo
Title: NATURAL GAS LIQUEFACTION SYSTEM INCLUDING AN INTEGRALLY-GEARED TURBO-COMPRESSOR
Abstract:
According to one aspect of the present disclosure, a natural gas liquefaction system (100) is provided. The system comprises an integrally-geared turbo-compressor (150) with a plurality of compressor stages; a prime mover (160) for driving the compressor; a pre-cooling loop (110), through which a first refrigerant is adapted to circulate, wherein one or more first compressor stages (151) of the plurality of compressor stages are adapted to pressurize the first refrigerant; a cooling loop (130), through which a second refrigerant is adapted to circulate, wherein one or more second compressor stages (155) of the plurality of compressor stages are adapted to pressurize the second refrigerant; a first heat exchanger device (170) for transferring heat from a natural gas and/or from the second refrigerant to the first refrigerant; and a second heat exchanger device (180) for transferring heat from the natural gas to the second refrigerant. A further aspect relates to a compressor arrangement for a natural gas liquefaction system. A yet further aspect relates to a method of liquefying natural gas.