Reduced carbon dioxide emission system and method for providing power for refrigerant compression and electrical power for a light hydrocarbon gas liquefaction process using cooled air injection to the turbines
First Claim
Patent Images
1. A reduced carbon dioxide emissions method for providing power for refrigerant compression and shared electrical power for a light hydrocarbon gas liquefaction process, the method comprising:
- a) cooling an air stream in a stand-alone cooler to a temperature below about 20°
C. to produce a cooled air stream;
b) supplying a cooled inlet air stream to at least one light hydrocarbon gas-fired turbine;
c) compressing a refrigerant in a plurality of compressors driven by a plurality of light hydrocarbon gas-fired turbines fueled by the cooled inlet air stream and a fuel gas stream with the turbines producing an exhaust stream at an elevated temperature;
d) producing steam at an elevated temperature and pressure by heat exchange with the exhaust stream;
e) driving a steam turbine with the steam from d) to produce mechanical power; and
,f) driving an electrical power generator with the mechanical power from e) to produce electrical power for use in the light hydrocarbon gas liquefaction process.
1 Assignment
0 Petitions
Accused Products
Abstract
A system and method for the production of liquefied light hydrocarbon gases by a system and a process that produces a liquefied gas product more efficiently and with reduced emissions of carbon dioxide (CO2) to the atmosphere.
-
Citations
22 Claims
-
1. A reduced carbon dioxide emissions method for providing power for refrigerant compression and shared electrical power for a light hydrocarbon gas liquefaction process, the method comprising:
-
a) cooling an air stream in a stand-alone cooler to a temperature below about 20°
C. to produce a cooled air stream;b) supplying a cooled inlet air stream to at least one light hydrocarbon gas-fired turbine; c) compressing a refrigerant in a plurality of compressors driven by a plurality of light hydrocarbon gas-fired turbines fueled by the cooled inlet air stream and a fuel gas stream with the turbines producing an exhaust stream at an elevated temperature; d) producing steam at an elevated temperature and pressure by heat exchange with the exhaust stream; e) driving a steam turbine with the steam from d) to produce mechanical power; and
,f) driving an electrical power generator with the mechanical power from e) to produce electrical power for use in the light hydrocarbon gas liquefaction process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A reduced carbon dioxide emissions method for providing compressed refrigerant compression and shared electrical power to a light hydrocarbon gas liquefaction process, the method consisting essentially of:
-
a) cooling an air stream to a temperature below about 20°
C. in a stand-alone cooler to produce a cooled air stream;b) supplying the cooled air stream to a plurality of light hydrocarbon gas-fired turbines; c) compressing a refrigerant in a plurality of compressors driven by a plurality of light hydrocarbon gas-fired turbines fueled by the cooled inlet air stream and a fuel gas stream with the turbine producing an exhaust stream at an elevated temperature; d) producing steam at an elevated temperature and pressure by heat exchange with the exhaust stream; e) driving a steam turbine with the steam from d) to produce mechanical power; and
,f) driving an electrical power generator with the mechanical power from e) to produce electrical power for use in the light hydrocarbon gas liquefaction process.
-
-
11. A reduced carbon dioxide emissions system for providing power for refrigerant compression and shared electrical power for a light hydrocarbon gas liquefaction process, the system comprising:
-
a) a stand-alone air cooler having an air inlet and at least one cooled air outlet; b) a light hydrocarbon gas-fired turbine comprising an air compressor having an air inlet in fluid communication with a cooled air outlet from the air cooler and a compressed air outlet in fluid communication with a combustion zone having a fuel inlet and a high-temperature, high-pressure combustion gas outlet in fluid communication with a combustion gas inlet to the turbine to drive the turbine, the turbine having a reduced pressure, high-temperature exhaust gas outlet; c) a refrigerant compressor driven by the turbine and having a low-pressure refrigerant inlet and an increased pressure refrigerant outlet with the compressor being shaft coupled to the turbine; d) a heat exchanger having a water or low-pressure steam inlet and a steam outlet and a high-temperature reduced pressure exhaust gas inlet in fluid communication with the reduced pressure, high-temperature exhaust gas outlet and a reduced pressure, reduced temperature exhaust gas outlet so that the reduced pressure, high-temperature exhaust gas passes in heat exchange with the water or low-pressure steam to produce high-pressure steam and a reduced pressure, reduced temperature exhaust stream; e) a steam turbine in fluid communication with the steam outlet of the heat exchanger; f) an electrical power generator which is shaft coupled to the steam turbine such that mechanical power produced by the steam turbine is used to drive the electrical power generator and produce electrical power; and
,g) a line in fluid communication with the increased pressure refrigerant outlet and the light hydrocarbon gas liquefaction process. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A reduced carbon dioxide emissions method for providing power for refrigerant compression and shared electrical power for a light hydrocarbon gas liquefaction process, the method comprising:
-
a) cooling an air stream in a stand-alone cooler to a temperature below about 20°
C. to produce a cooled air stream;b) supplying a cooled inlet air stream to a plurality of light hydrocarbon gas-fired turbines; c) compressing a refrigerant in a plurality of compressors driven by a plurality of light hydrocarbon gas-fired turbines fueled by the cooled inlet air stream and a fuel gas stream with the turbines producing an exhaust stream at an elevated temperature; d) producing steam at an elevated temperature and pressure by heat exchange with the exhaust stream; e) driving a steam turbine with the steam from d) to produce mechanical power; and
,f) driving an electrical power generator with the mechanical power from e) to produce electrical power for use in the light hydrocarbon gas liquefaction process.
-
-
22. A reduced carbon dioxide emissions system for providing power for refrigerant compression and shared electrical power for a light hydrocarbon gas liquefaction process, the system comprising:
-
a) a stand-alone air cooler having an air inlet and at least one cooled air outlet; b) a plurality of light hydrocarbon gas-fired turbines, each comprising an air compressor having an air inlet in fluid communication with a cooled air outlet from the air cooler and a compressed air outlet in fluid communication with a combustion zone having a fuel inlet and a high-temperature, high-pressure combustion gas outlet in fluid communication with a combustion gas inlet to the turbine to drive the turbine, the turbine having a reduced pressure, high-temperature exhaust gas outlet; c) a refrigerant compressor driven by the turbine and having a low-pressure refrigerant inlet and an increased pressure refrigerant outlet with the compressor being shaft coupled to the turbine; d) a heat exchanger having a water or low-pressure steam inlet and a steam outlet and a high-temperature reduced pressure exhaust gas inlet in fluid communication with the reduced pressure, high-temperature exhaust gas outlet and a reduced pressure, reduced temperature exhaust gas outlet so that the reduced pressure, high-temperature exhaust gas passes in heat exchange with the water or low-pressure steam to produce high-pressure steam and a reduced pressure, reduced temperature exhaust stream; e) a steam turbine in fluid communication with the steam outlet of the heat exchanger; f) an electrical power generator which is shaft coupled to the steam turbine such that mechanical power produced by the steam turbine is used to drive the electrical power generator and produce electrical power; and
,g) a line in fluid communication with the increased pressure refrigerant outlet and the light hydrocarbon gas liquefaction process.
-
Specification