초록 ▼

A natural gas liquefaction system and process wherein excess refrigeration available in a typical natural gas liquefaction system is used to cool the inlet air to gas turbines in the system to thereby improve the overall efficiency of the system. A cooler is positioned in front of the air inlet of e

A natural gas liquefaction system and process wherein excess refrigeration available in a typical natural gas liquefaction system is used to cool the inlet air to gas turbines in the system to thereby improve the overall efficiency of the system. A cooler is positioned in front of the air inlet of each gas turbine; and coolant (e.g. water) is flowed through each of the coolers to cool the ambient air as it flows into the gas turbines. The water, in turn, is cooled with propane taken from a refrigerant circuit in the system which, in turn, is used to initially cool the natural gas which is to be liquefied.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method for processing natural gas to produce liquefied natural gas, said method comprising the steps of:(a) cooling said natural gas in one or more heat exchangers using a first refrigerant from a first refrigerant circuit in which said first refrigerant is compressed

[ What is claimed is:] [1.]1. A method for processing natural gas to produce liquefied natural gas, said method comprising the steps of:(a) cooling said natural gas in one or more heat exchangers using a first refrigerant from a first refrigerant circuit in which said first refrigerant is compressed in a first compressor driven by a first gas turbine having a first inlet air stream; and(b) liquefying said natural gas using a second refrigerant, which second refrigerant is compressed in a second compressor driven by a second gas turbine having a second inlet air stream,wherein at least one of said first and second inlet air streams is cooled with said first refrigerant from said first refrigerant circuit.