for the working-up of the hydrocarbon feed

Industry

CPC
F25J1/0231

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Parent Industries

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F25Refrigeration F25JLIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE F25J1/00Processes or apparatus for liquefying or solidifying gases or gaseous mixtures

Current Industry

F25J1/0231for the working-up of the hydrocarbon feed

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Mixed refrigerant system and method
- Patent number 12,104,849
- Issue date Oct 1, 2024
- Chart Energy & Chemicals, Inc.
- Douglas A. Ducote
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Pretreatment and pre-cooling of natural gas by high pressure compre...
- Patent number 11,806,639
- Issue date Nov 7, 2023
- ExxonMobil Technology and Engineering Company
- Yijun Liu
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Multi-product liquefaction method and system
- Patent number 11,480,389
- Issue date Oct 25, 2022
- Air Products and Chemicals, Inc.
- Laurent Marc Brussol
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Mixed refrigerant system and method
- Patent number 11,408,676
- Issue date Aug 9, 2022
- Chart Energy & Chemicals, Inc.
- Douglas A. Ducote
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method for liquefying natural gas and for recovering possible liqui...
- Patent number 11,255,602
- Issue date Feb 22, 2022
- Saipem S.p.A.
- Eric Zielinski
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Gas liquefaction systems and methods
- Patent number 10,760,850
- Issue date Sep 1, 2020
- GE Oil & Gas, Inc.
- David Allen Kennedy
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method and system for preparing a lean methane-containing gas stream
- Patent number 10,684,072
- Issue date Jun 16, 2020
- Shell Oil Company
- Stefan Adrianus Rovers
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Mixed refrigerant system and method
- Patent number 10,663,221
- Issue date May 26, 2020
- Chart Energy & Chemicals, Inc.
- Douglas A. Ducote
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Multi-product liquefaction method and system
- Patent number 10,619,917
- Issue date Apr 14, 2020
- Air Products and Chemicals, Inc.
- Laurent Marc Brussol
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method and system for cooling and separating a hydrocarbon stream
- Patent number 10,598,431
- Issue date Mar 24, 2020
- Shell Oil Company
- Johan Jan Barend Pek
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method and apparatus for cooling a hydrocarbon stream
- Patent number 10,539,363
- Issue date Jan 21, 2020
- Shell Oil Company
- Marco Dick Jager
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method for the integration of liquefied natural gas and syngas prod...
- Patent number 10,393,431
- Issue date Aug 27, 2019
- L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Geo...
- Alexander Roesch
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Hydrocarbon condensate stabilizer and a method for producing a stab...
- Patent number 10,371,441
- Issue date Aug 6, 2019
- Shell Oil Company
- Lars Hendrik Van Leeuwen
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Hydrocarbon condensate stabilizer and a method for producing a stab...
- Patent number 10,370,598
- Issue date Aug 6, 2019
- Shell Oil Company
- Lars Hendrik Van Leeuwen
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Method for utilization of lean boil-off gas stream as a refrigerant...
- Patent number 9,989,304
- Issue date Jun 5, 2018
- ConocoPhillips Company
- Megan V. Evans
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Liquefied natural gas plant with ethylene independent heavies recov...
- Patent number 9,920,985
- Issue date Mar 20, 2018
- ConocoPhillips Company
- Jon M. Mock
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Configurations and methods for nitrogen rejection, LNG and NGL prod...
- Patent number 9,920,986
- Issue date Mar 20, 2018
- Fluor Technologies Corporation
- John Mak
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
System for incondensable component separation in a liquefied natura...
- Patent number 9,644,889
- Issue date May 9, 2017
- ConocoPhillips Company
- Weldon L. Ransbarger
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Heavy hydrocarbon removal from a natural gas stream
- Patent number 9,631,864
- Issue date Apr 25, 2017
- Air Products and Chemicals, Inc.
- Fei Chen
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Natural gas liquefaction method with high-pressure fractionation
- Patent number 9,222,724
- Issue date Dec 29, 2015
- IFP Energies Nouvelles
- Béatrice Fischer
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Liquefied natural gas production
- Patent number 8,584,488
- Issue date Nov 19, 2013
- Ortloff Engineers, Ltd.
- John D. Wilkinson
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method and system for the small-scale production of liquified natur...
- Patent number 8,020,406
- Issue date Sep 20, 2011
- David Vandor
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method for adjusting the high heating value of gas in the LNG chain
- Patent number 7,678,951
- Issue date Mar 16, 2010
- Total SA
- Denis Chretien
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Process and plant for the simultaneous production of an liquefiable...
- Patent number 7,237,407
- Issue date Jul 3, 2007
- Technip France
- Henri Paradowski
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Recovering natural gas liquids from LNG using vacuum distillation
- Patent number 7,234,323
- Issue date Jun 26, 2007
- Chevron U.S.A. Inc.
- Michael Monroe McCoy
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Separating nitrogen from methane in the production of LNG
- Patent number 6,758,060
- Issue date Jul 6, 2004
- Chart Inc.
- John V. O'Brien
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Integrated high pressure NGL recovery in the production of liquefie...
- Patent number 6,662,589
- Issue date Dec 16, 2003
- Air Products and Chemicals, Inc.
- Mark Julian Roberts
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Process for partial liquefaction of a fluid containing hydrocarbons...
- Patent number 6,449,982
- Issue date Sep 17, 2002
- Institut Francais du Petrole
- Béatrice Fischer
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Dual mixed refrigerant cycle for gas liquefaction
- Patent number 6,269,655
- Issue date Aug 7, 2001
- Mark Julian Roberts
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
LNG with ethane enrichment and reinjection gas as refrigerant
- Patent number 6,125,653
- Issue date Oct 3, 2000
- Texaco Inc.
- Steven W. Shu
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR EXTRACTING ETHANE FROM AN INITIAL NATURAL GAS STREAM AND...
- Publication number 20230408191
- Publication date Dec 21, 2023
- TECHNIP ENERGIES FRANCE
- Sylvain Vovard
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
METHOD AND SYSTEM FOR PRODUCTION OPTIMIZATION
- Publication number 20230083389
- Publication date Mar 16, 2023
- SHELL USA, INC.
- Raghuraman PITCHUMANI
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Mixed Refrigerant System and Method
- Publication number 20220373254
- Publication date Nov 24, 2022
- Chart Energy & Chemicals, Inc.
- Douglas A. Ducote
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
SYSTEM AND METHOD TO PRODUCE LIQUEFIED NATURAL GAS USING TWO DISTIN...
- Publication number 20220333852
- Publication date Oct 20, 2022
- Henry Edward Howard
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Pretreatment and Pre-Cooling of Natural Gas by High Pressure Compre...
- Publication number 20210086099
- Publication date Mar 25, 2021
- ExxonMobil Upstream Research Company
- Yijun LIU
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Mixed Refrigerant System and Method
- Publication number 20200248962
- Publication date Aug 6, 2020
- Chart Energy & Chemicals, Inc.
- Douglas A. Ducote
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
MULTI-PRODUCT LIQUEFACTION METHOD AND SYSTEM
- Publication number 20200200471
- Publication date Jun 25, 2020
- Air Products and Chemicals, Inc.
- Laurent Marc Brussol
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Method For Liquefying Natural Gas And For Recovering Possible Liqui...
- Publication number 20190310013
- Publication date Oct 10, 2019
- SAIPEM S.P.A.
- Eric ZIELINSKI
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Liquefied Natural Gas Production
- Publication number 20180149424
- Publication date May 31, 2018
- Russell H. Oelfke
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
METHOD FOR THE INTEGRATION OF LIQUEFIED NATURAL GAS AND SYNGAS PROD...
- Publication number 20180038643
- Publication date Feb 8, 2018
- L'air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation Des Procedes Ge...
- Alexander ROESCH
- C01 - INORGANIC CHEMISTRY
Information Patent Application
HYDROCARBON CONDENSATE STABILIZER AND A METHOD FOR PRODUCING A STAB...
- Publication number 20170210997
- Publication date Jul 27, 2017
- Shell Oil Company
- Lars Hendrik VAN LEEUWEN
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
A HYDROCARBON CONDENSATE STABILIZER AND A METHOD FOR PRODUCING A ST...
- Publication number 20170191748
- Publication date Jul 6, 2017
- Shell Oil Company
- Lars Hendrik VAN LEEUWEN
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
CONFIGURATIONS AND METHODS FOR NITROGEN REJECTION, LNG AND NGL PROD...
- Publication number 20170023293
- Publication date Jan 26, 2017
- Fluor Technologies Corporation
- John Mak
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
MIXED-REFLUX FOR HEAVIES REMOVAL IN LNG PROCESSING
- Publication number 20140260417
- Publication date Sep 18, 2014
- ConocoPhillips Company
- Karl Lee HERZOG
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Heavy Hydrocarbon Removal From A Natural Gas Stream
- Publication number 20140033762
- Publication date Feb 6, 2014
- Air Products and Chemicals, Inc.
- Fei Chen
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Heavy Hydrocarbon Removal From A Natural Gas Stream
- Publication number 20140033763
- Publication date Feb 6, 2014
- Air Products and Chemicals, Inc.
- Fei Chen
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
METHOD AND SYSTEM FOR THE SMALL-SCALE PRODUCTION OF LIQUIFIED NATUR...
- Publication number 20130263624
- Publication date Oct 10, 2013
- David Vandor
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
LIQUEFIED NATURAL GAS PLANT WITH ETHYLENE INDEPENDENT HEAVIES RECOV...
- Publication number 20130199238
- Publication date Aug 8, 2013
- ConocoPhillips Company
- Jon M. MOCK
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
CONFIGURATIONS AND METHODS OF INTEGRATED NGL RECOVERY AND LNG LIQUE...
- Publication number 20130061633
- Publication date Mar 14, 2013
- FLUOR TECHNOLOGIES CORPORATION
- John Mak
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
METHOD AND SYSTEM FOR THE SMALL-SCALE PRODUCTION OF LIQUIFIED NATUR...
- Publication number 20120036888
- Publication date Feb 16, 2012
- David Vandor
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
NATURAL GAS LIQUEFACTION METHOD WITH ENHANCED PROPANE RECOVERY
- Publication number 20110265511
- Publication date Nov 3, 2011
- IFP
- Beatrice Fischer
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Liquefied natural gas and hydrocarbon gas processing
- Publication number 20110120183
- Publication date May 26, 2011
- Ortloff Engineers, Ltd.
- John D. Wilkinson
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
NATURAL GAS LIQUEFACTION METHOD WITH HIGH-PRESSURE FRACTIONATION
- Publication number 20110048067
- Publication date Mar 3, 2011
- IFP
- Béatrice Fischer
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
METHOD AND APPARATUS FOR COOLING A HYDROCARBON STREAM
- Publication number 20110023536
- Publication date Feb 3, 2011
- Marco Dick Jager
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Method for Utilization of Lean Boil-Off Gas Stream as a Refrigerant...
- Publication number 20100218551
- Publication date Sep 2, 2010
- ConocoPhillips Company
- Megan V. Evans
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
SYSTEM FOR INCONDENSABLE COMPONENT SEPARATION IN A LIQUEFIED NATURA...
- Publication number 20100058803
- Publication date Mar 11, 2010
- ConocoPhillips Company
- Weldon L. Ransbarger
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Liquefied natural gas and hydrocarbon gas processing
- Publication number 20100031700
- Publication date Feb 11, 2010
- Ortloff Engineers, Ltd.
- John D. Wilkinson
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Integrated NGL Recovery And Liquefied Natural Gas Production
- Publication number 20100024477
- Publication date Feb 4, 2010
- Air Products and Chemicals, Inc.
- Mark Julian Roberts
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Method and System for the Small-scale Production of Liquified Natur...
- Publication number 20090113928
- Publication date May 7, 2009
- David Vandor
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
PROCESS FOR PRODUCING LIQEFIED NATURAL GAS FROM HIGH CO2 NATURAL GAS
- Publication number 20090090049
- Publication date Apr 9, 2009
- Chevron U.S.A. Inc.
- Daniel Chinn
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

for the working-up of the hydrocarbon feed

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Mixed refrigerant system and method

Pretreatment and pre-cooling of natural gas by high pressure compre...

Multi-product liquefaction method and system

Mixed refrigerant system and method

Method for liquefying natural gas and for recovering possible liqui...

Gas liquefaction systems and methods

Method and system for preparing a lean methane-containing gas stream

Mixed refrigerant system and method

Multi-product liquefaction method and system

Method and system for cooling and separating a hydrocarbon stream

Method and apparatus for cooling a hydrocarbon stream

Method for the integration of liquefied natural gas and syngas prod...

Hydrocarbon condensate stabilizer and a method for producing a stab...

Hydrocarbon condensate stabilizer and a method for producing a stab...

Method for utilization of lean boil-off gas stream as a refrigerant...

Liquefied natural gas plant with ethylene independent heavies recov...

Configurations and methods for nitrogen rejection, LNG and NGL prod...

System for incondensable component separation in a liquefied natura...

Heavy hydrocarbon removal from a natural gas stream

Natural gas liquefaction method with high-pressure fractionation

Liquefied natural gas production

Method and system for the small-scale production of liquified natur...

Method for adjusting the high heating value of gas in the LNG chain

Process and plant for the simultaneous production of an liquefiable...

Recovering natural gas liquids from LNG using vacuum distillation

Separating nitrogen from methane in the production of LNG

Integrated high pressure NGL recovery in the production of liquefie...

Process for partial liquefaction of a fluid containing hydrocarbons...

Dual mixed refrigerant cycle for gas liquefaction

LNG with ethane enrichment and reinjection gas as refrigerant

Patents Applicationslast 30 patents

METHOD FOR EXTRACTING ETHANE FROM AN INITIAL NATURAL GAS STREAM AND...

METHOD AND SYSTEM FOR PRODUCTION OPTIMIZATION

Mixed Refrigerant System and Method

SYSTEM AND METHOD TO PRODUCE LIQUEFIED NATURAL GAS USING TWO DISTIN...

Pretreatment and Pre-Cooling of Natural Gas by High Pressure Compre...

Mixed Refrigerant System and Method

MULTI-PRODUCT LIQUEFACTION METHOD AND SYSTEM

Method For Liquefying Natural Gas And For Recovering Possible Liqui...

Liquefied Natural Gas Production

METHOD FOR THE INTEGRATION OF LIQUEFIED NATURAL GAS AND SYNGAS PROD...

HYDROCARBON CONDENSATE STABILIZER AND A METHOD FOR PRODUCING A STAB...

A HYDROCARBON CONDENSATE STABILIZER AND A METHOD FOR PRODUCING A ST...

CONFIGURATIONS AND METHODS FOR NITROGEN REJECTION, LNG AND NGL PROD...

MIXED-REFLUX FOR HEAVIES REMOVAL IN LNG PROCESSING

Heavy Hydrocarbon Removal From A Natural Gas Stream

Heavy Hydrocarbon Removal From A Natural Gas Stream

METHOD AND SYSTEM FOR THE SMALL-SCALE PRODUCTION OF LIQUIFIED NATUR...

LIQUEFIED NATURAL GAS PLANT WITH ETHYLENE INDEPENDENT HEAVIES RECOV...

CONFIGURATIONS AND METHODS OF INTEGRATED NGL RECOVERY AND LNG LIQUE...

METHOD AND SYSTEM FOR THE SMALL-SCALE PRODUCTION OF LIQUIFIED NATUR...

NATURAL GAS LIQUEFACTION METHOD WITH ENHANCED PROPANE RECOVERY

Liquefied natural gas and hydrocarbon gas processing

NATURAL GAS LIQUEFACTION METHOD WITH HIGH-PRESSURE FRACTIONATION

METHOD AND APPARATUS FOR COOLING A HYDROCARBON STREAM

Method for Utilization of Lean Boil-Off Gas Stream as a Refrigerant...

SYSTEM FOR INCONDENSABLE COMPONENT SEPARATION IN A LIQUEFIED NATURA...

Liquefied natural gas and hydrocarbon gas processing

Integrated NGL Recovery And Liquefied Natural Gas Production

Method and System for the Small-scale Production of Liquified Natur...

PROCESS FOR PRODUCING LIQEFIED NATURAL GAS FROM HIGH CO2 NATURAL GAS