Heat Recovery Steam Generation Integration With High Pressure Feed Gas Processes For The Production of Liquefied Natural Gas

A system for producing liquefied natural gas (LNG) from a natural gas stream, comprising:

• a first compressor and a second compressor configured to compress a natural gas stream from a pressure of less than 8.27 MPa (1,200 psia) to a pressure of at least 10.34 MPa (1,500 psia);
• a heat exchanger disposed between the first compressor and the second compressor, the heat exchanger configured to cool the natural gas stream so that the second compressor produces a cooled, compressed natural gas stream;
• a liquefaction process configured to liquefy the cooled, compressed natural gas stream, wherein the liquefaction process includes a refrigerant compressor configured to compress a stream of refrigerant used to chill, condense, or liquefy the cooled, compressed natural gas stream, and wherein the refrigerant compressor is powered by a power source;
• and
• a heat recovery steam generation (HRSG) system configured to recover heat from the power source of the refrigerant compressor to thereby generate a stream of pressurized steam from the recovered heat;
• wherein at least one of the first and second compressors are powered using at least part of the stream of pressurized steam.