<p>A method and system for producing liquefied and sub-cooled natural gas by means of a refrigeration assembly using a single phase gaseous refrigerant comprising: at least two expanders (1-3); a compressor assembly (5-7); a heat exchanger assembly (8) for heat absorption from natural gas; and a heat rejection assembly (10-12). The novel features according to the present invention are arranging the expanders (1-3) in expander loops; using only one and the same refrigerant in all loops; passing an expanded refrigerant flow from the respective expander into the heat exchanger assembly (8), each being at a mass flow and temperature level adapted to de-superheating, condensation or cooling of dense phase and/or sub-cooling of natural gas; and serving the refrigerant to the respective expander in a compressed flow by means of the compressor assembly having compressors or compressor stages enabling adapted inlet and outlet pressures for the respective expander.</p>
申请公布号
WO2010024691(A3)
申请公布日期
2012.01.19
申请号
WO2009NO00302
申请日期
2009.08.27
申请人
HAMWORTHY OIL & GAS SYSTEMS AS;JAKOBSEN, ARNE;RUMMELHOFF, CARL JOERGEN;HAUKEDAL, BJOERN, HARALD
发明人
JAKOBSEN, ARNE;RUMMELHOFF, CARL JOERGEN;HAUKEDAL, BJOERN, HARALD