Separating low boiling components

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CPC
F25J2220/62

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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 F25J2220/00Processes or apparatus involving steps for the removal of impurities

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F25J2220/62Separating low boiling components

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Patents Grantslast 30 patents

Information Patent Grant
Dehydrogenation separation unit with mixed refrigerant cooling
- Patent number 12,092,392
- Issue date Sep 17, 2024
- Chart Energy & Chemicals, Inc.
- Douglas A. Ducote
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Natural gas liquefaction by a high pressure expansion process
- Patent number 11,892,233
- Issue date Feb 6, 2024
- ExxonMobil Technology and Engineering Company
- Fritz Pierre
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Refrigerant supply to a cooling facility
- Patent number 11,874,055
- Issue date Jan 16, 2024
- ConocoPhillips Company
- Paul R. Davies
- 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
Process for cryogenic separation of a feed stream containing methan...
- Patent number 11,713,920
- Issue date Aug 1, 2023
- WAGA ENERGY
- Guénaël Prince
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method to recover LPG and condensates from refineries fuel gas streams
- Patent number 11,692,772
- Issue date Jul 4, 2023
- 1304338 Alberta Ltd.
- Jose Lourenco
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Systems and methods for using multiple cryogenic hydraulic turbines
- Patent number 11,644,234
- Issue date May 9, 2023
- ExxonMobil Technology and Enginering Company
- Christopher G. Holt
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Dehydrogenation separation unit with mixed refrigerant cooling
- Patent number 11,629,912
- Issue date Apr 18, 2023
- 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 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
Hydrocarbon gas processing
- Patent number 11,448,461
- Issue date Sep 20, 2022
- UOP LLC
- Thai Pham
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method and apparatus in a cryogenic liquefaction process
- Patent number 11,408,675
- Issue date Aug 9, 2022
- Highview Enterprises Limited
- Stephen Gareth Brett
- 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
Method and system for liquefaction of natural gas using liquid nitr...
- Patent number 11,079,176
- Issue date Aug 3, 2021
- ExxonMobil Upstream Research Company
- Fritz Pierre
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Process for expansion and storage of a flow of liquefied natural ga...
- Patent number 10,995,910
- Issue date May 4, 2021
- Technip France
- Sylvain Vovard
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method for separating components of a gas
- Patent number 10,995,984
- Issue date May 4, 2021
- Sustainable Energy Solutions, Inc.
- Larry Baxter
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Helium extraction from natural gas
- Patent number 10,962,283
- Issue date Mar 30, 2021
- Air Products and Chemicals, Inc.
- Vincent White
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
System for treating a gas deriving from the evaporation of a cryoge...
- Patent number 10,914,516
- Issue date Feb 9, 2021
- Cryostar SAS
- Mathias Ragot
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method for turndown of a liquefied natural gas (LNG) plant
- Patent number 10,907,896
- Issue date Feb 2, 2021
- EQUINOR ENERGY AS
- Sivert Vist
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Ship comprising engine
- Patent number 10,889,361
- Issue date Jan 12, 2021
- Daewoo Shipbuilding & Marine Engineering Co., Ltd.
- Joon Chae Lee
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Multiple pressure mixed refrigerant cooling system
- Patent number 10,852,059
- Issue date Dec 1, 2020
- Air Products and Chemicals, Inc.
- Gowri Krishnamurthy
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method to produce LNG at gas pressure letdown stations in natural g...
- Patent number 10,852,058
- Issue date Dec 1, 2020
- 1304338 Alberta Ltd.
- MacKenzie Millar
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Multiple pressure mixed refrigerant cooling process
- Patent number 10,753,676
- Issue date Aug 25, 2020
- Air Products and Chemicals, Inc.
- Gowri Krishnamurthy
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Methods and systems for enhancing production of liquefied natural gas
- Patent number 10,753,677
- Issue date Aug 25, 2020
- General Electric Company
- Arul Saravanapriyan Suraganda Narayana
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Systems and methods for using multiple cryogenic hydraulic turbines
- Patent number 10,648,729
- Issue date May 12, 2020
- ExxonMobil Upstream Research Company
- Christopher G. Holt
- 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
Continuous mixed refrigerant optimization system for the production...
- Patent number 10,584,918
- Issue date Mar 10, 2020
- GE Oil & Gas, LLC
- John Michael Repasky
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method for start-up of a liquefied natural gas (LNG) plant
- Patent number 10,527,346
- Issue date Jan 7, 2020
- Statoil Petroleum AS
- Sivert Vist
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Integrated pre-cooled mixed refrigerant system and method
- Patent number 10,502,483
- Issue date Dec 10, 2019
- Chart Energy & Chemicals, Inc.
- Timothy P. Gushanas
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Flexible liquefied natural gas plant
- Patent number 10,378,817
- Issue date Aug 13, 2019
- ExxonMobil Upstream Research Company
- Chad C. Rasmussen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Dehydration Separation Unit with Mixed Refrigerant Cooling
- Publication number 20240410647
- Publication date Dec 12, 2024
- Chart Energy & Chemicals, Inc.
- Douglas A. Ducote
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Nitrogen Rejection Unit System and Method for Low Nitrogen Concentr...
- Publication number 20240401877
- Publication date Dec 5, 2024
- Chart Energy & Chemicals, Inc.
- Richard B. Hopewell
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
SYSTEM AND METHOD FOR RELIQUEFACTION OF BOIL-OFF GAS OF SHIP AND SY...
- Publication number 20240384927
- Publication date Nov 21, 2024
- Hanwha Ocean Co., Ltd.
- Jin Ho CHOI
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
REFRIGERANT SUPPLY TO A COOLING FACILITY
- Publication number 20240093936
- Publication date Mar 21, 2024
- ConocoPhillips Company
- Paul R. DAVIES
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Application
COMBINED CYCLE NATURAL GAS PROCESSING SYSTEM
- Publication number 20240053095
- Publication date Feb 15, 2024
- JGC Corporation
- Yuzuru KAKUTANI
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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 FOR PRODUCING LIQUEFIED NATURAL GAS FROM NATURAL GAS, AND CO...
- Publication number 20230408187
- Publication date Dec 21, 2023
- TECHNIP FRANCE
- Sylvain Vovard
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
PROCESS FOR CRYOGENIC SEPARATION OF A FEED STREAM CONTAINING METHAN...
- Publication number 20230384027
- Publication date Nov 30, 2023
- WAGA ENERGY
- Guénaël Prince
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
CLOSED LOOP LNG PROCESS FOR A FEED GAS WITH NITROGEN
- Publication number 20230375261
- Publication date Nov 23, 2023
- ConocoPhillips Company
- Ying Zhang
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
SYSTEM AND METHOD TO PRODUCE LIQUEFIED NATURAL GAS
- Publication number 20230115492
- Publication date Apr 13, 2023
- Henry Edward Howard
- 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
METHOD FOR THE SEPARATION AND LIQUEFACTION OF METHANE AND CARBON DI...
- Publication number 20220412649
- Publication date Dec 29, 2022
- L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEO...
- Jorge Ernesto TOVAR RAMOS
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
SYSTEM AND METHOD FOR THE PROCESSING OF LNG
- Publication number 20220252342
- Publication date Aug 11, 2022
- Petroliam Nasional Berhad (Petronas)
- Amiza SURMI
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Dehydrogenation Separation Unit with Mixed Refrigerant Cooling
- Publication number 20220228802
- Publication date Jul 21, 2022
- Chart Energy & Chemicals, Inc.
- Douglas A. Ducote
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Natural Gas Liquefaction By A High Pressure Expansion Process
- Publication number 20220074652
- Publication date Mar 10, 2022
- ExxonMobil Upstream Research Company
- Fritz Pierre
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
CRYOGENIC PROCESS FOR REMOVING NITROGEN FROM A DISCHARGE GAS
- Publication number 20210172677
- Publication date Jun 10, 2021
- L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation des procedes Ge...
- Paul TERRIEN
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Dehydrogenation Separation Unit with Mixed Refrigerant Cooling
- Publication number 20210148632
- Publication date May 20, 2021
- Chart Energy & Chemicals, Inc.
- Douglas A. Ducote
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
HYDROCARBON GAS PROCESSING
- Publication number 20210131729
- Publication date May 6, 2021
- UOP LLC
- Thai Pham
- 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
METHOD TO RECOVER LPG AND CONDENSATES FROM REFINERIES FUEL GAS STREAMS
- Publication number 20200386475
- Publication date Dec 10, 2020
- 1304338 Alberta Ltd.
- Jose Lourenco
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
PROCESS FOR CRYOGENIC SEPARATION OF A FEED STREAM CONTAINING METHAN...
- Publication number 20200318896
- Publication date Oct 8, 2020
- WAGA ENERGY
- Guénaël Prince
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Systems and Methods for Using Multiple Cryogenic Hydraulic Turbines
- Publication number 20200232704
- Publication date Jul 23, 2020
- ExxonMobil Upstream Research Company
- Christopher G. Holt
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
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
Helium Extraction from Natural Gas
- Publication number 20200088466
- Publication date Mar 19, 2020
- Air Products and Chemicals, Inc.
- Vincent White
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
ADDITIONAL LIQUID NATURAL GAS PLANT AND METHOD OF OPERATING THEREOF
- Publication number 20200033054
- Publication date Jan 30, 2020
- Marco Dick JAGER
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
METHOD FOR SEPARATING COMPONENTS OF A GAS
- Publication number 20200018546
- Publication date Jan 16, 2020
- NewVistas Capital, LLC
- Larry Baxter
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
LNG PROCESS FOR VARIABLE PIPELINE GAS COMPOSITION
- Publication number 20190376741
- Publication date Dec 12, 2019
- ConocoPhillips Company
- Attilio J. PRADERIO
- 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
Natural Gas Liquefaction by a High Pressure Expansion Process using...
- Publication number 20190120548
- Publication date Apr 25, 2019
- Fritz Pierre
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
SYSTEM FOR TREATING A GAS DERIVING FROM THE EVAPORATION OF A CRYOGE...
- Publication number 20190101329
- Publication date Apr 4, 2019
- CRYOSTAR SAS
- Mathias Ragot
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Separating low boiling components

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Dehydrogenation separation unit with mixed refrigerant cooling

Natural gas liquefaction by a high pressure expansion process

Refrigerant supply to a cooling facility

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

Process for cryogenic separation of a feed stream containing methan...

Method to recover LPG and condensates from refineries fuel gas streams

Systems and methods for using multiple cryogenic hydraulic turbines

Dehydrogenation separation unit with mixed refrigerant cooling

Multi-product liquefaction method and system

Hydrocarbon gas processing

Method and apparatus in a cryogenic liquefaction process

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

Method and system for liquefaction of natural gas using liquid nitr...

Process for expansion and storage of a flow of liquefied natural ga...

Method for separating components of a gas

Helium extraction from natural gas

System for treating a gas deriving from the evaporation of a cryoge...

Method for turndown of a liquefied natural gas (LNG) plant

Ship comprising engine

Multiple pressure mixed refrigerant cooling system

Method to produce LNG at gas pressure letdown stations in natural g...

Multiple pressure mixed refrigerant cooling process

Methods and systems for enhancing production of liquefied natural gas

Systems and methods for using multiple cryogenic hydraulic turbines

Multi-product liquefaction method and system

Method and system for cooling and separating a hydrocarbon stream

Continuous mixed refrigerant optimization system for the production...

Method for start-up of a liquefied natural gas (LNG) plant

Integrated pre-cooled mixed refrigerant system and method

Flexible liquefied natural gas plant

Patents Applicationslast 30 patents

Dehydration Separation Unit with Mixed Refrigerant Cooling

Nitrogen Rejection Unit System and Method for Low Nitrogen Concentr...

SYSTEM AND METHOD FOR RELIQUEFACTION OF BOIL-OFF GAS OF SHIP AND SY...

REFRIGERANT SUPPLY TO A COOLING FACILITY

COMBINED CYCLE NATURAL GAS PROCESSING SYSTEM

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

METHOD FOR PRODUCING LIQUEFIED NATURAL GAS FROM NATURAL GAS, AND CO...

PROCESS FOR CRYOGENIC SEPARATION OF A FEED STREAM CONTAINING METHAN...

CLOSED LOOP LNG PROCESS FOR A FEED GAS WITH NITROGEN

SYSTEM AND METHOD TO PRODUCE LIQUEFIED NATURAL GAS

METHOD AND SYSTEM FOR PRODUCTION OPTIMIZATION

METHOD FOR THE SEPARATION AND LIQUEFACTION OF METHANE AND CARBON DI...

SYSTEM AND METHOD FOR THE PROCESSING OF LNG

Dehydrogenation Separation Unit with Mixed Refrigerant Cooling

Natural Gas Liquefaction By A High Pressure Expansion Process

CRYOGENIC PROCESS FOR REMOVING NITROGEN FROM A DISCHARGE GAS

Dehydrogenation Separation Unit with Mixed Refrigerant Cooling

HYDROCARBON GAS PROCESSING

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

METHOD TO RECOVER LPG AND CONDENSATES FROM REFINERIES FUEL GAS STREAMS

PROCESS FOR CRYOGENIC SEPARATION OF A FEED STREAM CONTAINING METHAN...

Systems and Methods for Using Multiple Cryogenic Hydraulic Turbines

MULTI-PRODUCT LIQUEFACTION METHOD AND SYSTEM

Helium Extraction from Natural Gas

ADDITIONAL LIQUID NATURAL GAS PLANT AND METHOD OF OPERATING THEREOF

METHOD FOR SEPARATING COMPONENTS OF A GAS

LNG PROCESS FOR VARIABLE PIPELINE GAS COMPOSITION

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

Natural Gas Liquefaction by a High Pressure Expansion Process using...

SYSTEM FOR TREATING A GAS DERIVING FROM THE EVAPORATION OF A CRYOGE...