摘要:
The present invention relates to a process and apparatus for liquefying natural gas. In another aspect the present invention relates to the heat recovery from a turbine in a liquefied natural gas facility.
摘要:
A system for removing a contaminant from a refrigerant stream employed in a closed-loop refrigeration cycle of an LNG facility. The system employs a distillation column to separate the refrigerant stream into a contaminant-rich and a contaminant-depleted stream, wherein the contaminant-depleted stream is subsequently returned to the closed-loop refrigeration cycle. The distillation column can include a reboiler and/or condenser. The reboiler and condenser can utilize one or more process streams from within the LNG facility to provide heating and/or cooling to the distillation column.
摘要:
An LNG facility employing an enhanced fuel gas control system. The enhanced fuel gas control system is operable to produce fuel gas having a substantially constant Modified Wobbe Index (MWI) during start-up and steady-state operation of the LNG facility by processing one or more intermediate process streams in a fuel gas separator. In one embodiment, the fuel gas separator employs a hydrocarbon-separating membrane, which can remove heavy hydrocarbons and/or concentrate nitrogen from the incoming process streams.
摘要:
An LNG facility employing an enhanced fuel gas control system. The enhanced fuel gas control system is operable to produce fuel gas having a substantially constant Modified Wobbe Index (MWI) during start-up and steady-state operation of the LNG facility by processing one or more intermediate process streams in a fuel gas separator. In one embodiment, the fuel gas separator employs a hydrocarbon-separating membrane, which can remove heavy hydrocarbons and/or concentrate nitrogen from the incoming process streams.
摘要:
A method of increasing the production rate and operational flexibility of an LNG facility by overfiring one or more modular gas turbines employed to drive one or more refrigerant compressors in the LNG facility.
摘要:
An LNG facility capable of producing a domestic gas product from an intermediate stream in the LNG facility. Withdrawing the domestic gas product from a location within the LNG facility can minimize operational disturbances typically caused by extracting a domestic gas product stream upstream of the liquefaction portion of the LNG facility. In addition, withdrawing the domestic gas product from this location can provide increased control of light contaminants (e.g., nitrogen) in open-loop refrigeration cycles and can ultimately result in incremental LNG and/or NGL production.
摘要:
A system for removing a contaminant from a refrigerant stream employed in a closed-loop refrigeration cycle of an LNG facility. The system employs a distillation column to separate the refrigerant stream into a contaminant-rich and a contaminant-depleted stream, wherein the contaminant-depleted stream is subsequently returned to the closed-loop refrigeration cycle. The distillation column can include a reboiler and/or condenser. The reboiler and condenser can utilize one or more process streams from within the LNG facility to provide heating and/or cooling to the distillation column.
摘要:
An LNG facility employing an enhanced nitrogen removal system that concentrates the amount of nitrogen in the feed stream to a nitrogen removal unit (NRU) to thereby increase the separation efficiency of the NRU. In one embodiment, the nitrogen removal system comprises a multistage separation vessel operable to separate nitrogen from a cooled natural gas stream. At least a portion of the resulting nitrogen-containing stream exiting the multistage separation vessel can be used as a refrigerant, processed to a nitrogen removal unit, and/or utilized as fuel gas for the LNG facility.
摘要:
An LNG facility employing an enhanced nitrogen removal system that concentrates the amount of nitrogen in the feed stream to a nitrogen removal unit (NRU) to thereby increase the separation efficiency of the NRU. In one embodiment, the nitrogen removal system comprises a multistage separation vessel operable to separate nitrogen from a cooled natural gas stream. At least a portion of the resulting nitrogen-containing stream exiting the multistage separation vessel can be used as a refrigerant, processed to a nitrogen removal unit, and/or utilized as fuel gas for the LNG facility.