Separating high boiling, i.e. less volatile components

Industry

CPC
F25J2220/84

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

Current Industry

F25J2220/84Separating high boiling, i.e. less volatile components

Industries

Patents Grantslast 30 patents

Information Patent Grant
Method and plant for the purification of carbon dioxide using liqui...
- Patent number 11,287,183
- Issue date Mar 29, 2022
- UNION ENGINEEERING A/S
- Rasmus Find
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for removing a foulant from a gas stream with minimal extern...
- Patent number 10,882,001
- Issue date Jan 5, 2021
- Hall Labs LLC
- Larry Baxter
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Systems and methods for separating condensable vapors from light ga...
- Patent number 10,724,793
- Issue date Jul 28, 2020
- Hall Labs LLC
- Larry L. Baxter
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Highly cost effective technology for capture of industrial emission...
- Patent number 10,670,334
- Issue date Jun 2, 2020
- SUSTAINABLE GREEN POWER INDUSTRIES
- Dilip Kumar De
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Purification of carbon dioxide
- Patent number 10,655,912
- Issue date May 19, 2020
- Air Products and Chemicals, Inc.
- Paul Higginbotham
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Thermoacoustic refrigerator
- Patent number 10,591,187
- Issue date Mar 17, 2020
- Siddons Enertec Pty Ltd
- David Proctor
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Method and apparatus for separating a carbon dioxide-rich gas
- Patent number 10,281,208
- Issue date May 7, 2019
- L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Geo...
- Benoit Davidian
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Process for recovering hydrocarbons from crude carbon dioxide fluid
- Patent number 10,267,560
- Issue date Apr 23, 2019
- Air Products and Chemicals, Inc.
- Paul Higginbotham
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Purification of carbon dioxide
- Patent number 10,254,042
- Issue date Apr 9, 2019
- Air Products and Chemicals, Inc.
- Paul Higginbotham
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method and apparatus for purifying a carbon dioxide-rich mixture at...
- Patent number 10,197,328
- Issue date Feb 5, 2019
- L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploirtation Des Procedes Ge...
- Alain Briglia
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for cooling a flow containing at least 35% car...
- Patent number 9,950,274
- Issue date Apr 24, 2018
- L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Geo...
- Alain Briglia
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Alkalinity control agent supply method and apparatus for compressor...
- Patent number 9,945,609
- Issue date Apr 17, 2018
- IHI Corporation
- Toshiyuki Naito
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method and device for separating a mixture containing carbon dioxid...
- Patent number 9,903,648
- Issue date Feb 27, 2018
- L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Geo...
- Alain Briglia
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Supply apparatus and supply method for supplying fluid carbon dioxide
- Patent number 9,887,079
- Issue date Feb 6, 2018
- Organo Corporation
- Hiroshi Sugawara
- B08 - CLEANING
Information Patent Grant
Method to condense and recover carbon dioxide (CO2) from CO2 contai...
- Patent number 9,844,748
- Issue date Dec 19, 2017
- 1304338 Alberta Ltd.
- Jose Lourenco
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Process and apparatus for separating NO2 from a CO2 and NO2-contain...
- Patent number 9,816,755
- Issue date Nov 14, 2017
- L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Geo...
- Gregoire Beasse
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method and apparatus for removing carbon dioxide gas from coal comb...
- Patent number 9,776,132
- Issue date Oct 3, 2017
- Ben M. Enis
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Process for treating a natural gas containing carbon dioxide
- Patent number 9,605,896
- Issue date Mar 28, 2017
- Total SA
- Xavier Renaud
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Process and apparatus for separating NO2 from a CO2 and NO2—contain...
- Patent number 9,458,022
- Issue date Oct 4, 2016
- L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Geo...
- Gregoire Beasse
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Systems and methods for integrated energy storage and cryogenic car...
- Patent number 9,410,736
- Issue date Aug 9, 2016
- Sustainable Energy Solutions, LLC
- Larry L. Baxter
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Grant
Separation of carbon dioxide and hydrogen
- Patent number 9,163,188
- Issue date Oct 20, 2015
- BP Alternative Energy international Limited
- Jonathan Alec Forsyth
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process and apparatus for the separation of a gaseous mixture
- Patent number 9,109,831
- Issue date Aug 18, 2015
- AIR LIQUIDE GLOBAL E&C SOLUTIONS US Inc.
- Arthur Darde
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Carbon dioxide capture and liquefaction
- Patent number 9,103,584
- Issue date Aug 11, 2015
- Arnold Keller
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method and apparatus for drying and compressing CO2-rich flow
- Patent number 8,852,318
- Issue date Oct 7, 2014
- L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GE...
- Alain Briglia
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Method for burning carbonated fuels with combustion smoke filtratio...
- Patent number 8,715,605
- Issue date May 6, 2014
- L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Geo...
- Philippe Court
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Carbon dioxide capture and liquefaction
- Patent number 8,585,802
- Issue date Nov 19, 2013
- Arnold Keller
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Configurations and methods of carbon capture
- Patent number 8,557,024
- Issue date Oct 15, 2013
- Fluor Technologies Corporation
- Satish Reddy
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Scrubbing a gas containing nitrogen oxides
- Patent number 8,491,844
- Issue date Jul 23, 2013
- L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GE...
- Alain Briglia
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Treatment of flue gas from an oxyfuel combustion process
- Patent number 8,323,602
- Issue date Dec 4, 2012
- Air Products and Chemicals, Inc.
- Andrew David Wright
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
CO2 separation apparatus and process for oxy-combustion coal power...
- Patent number 8,268,050
- Issue date Sep 18, 2012
- Air Liquide Process and Construction, Inc.
- Bao Ha
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Patents Applicationslast 30 patents

Information Patent Application
Carbon Dioxide Capture from Flu Gas
- Publication number 20180031315
- Publication date Feb 1, 2018
- Larry Baxter
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
THERMOACOUSTIC REFRIGERATOR
- Publication number 20170307261
- Publication date Oct 26, 2017
- SIDDONS ENERTEC PTY LTD
- David PROCTOR
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND PLANT FOR THE PURIFICATION OF CARBON DIOXIDE USING LIQUI...
- Publication number 20170227285
- Publication date Aug 10, 2017
- UNION ENGINEERING A/S
- Rasmus Find
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Process and Apparatus for Separating NO2 from a CO2 and NO2- Contai...
- Publication number 20150276309
- Publication date Oct 1, 2015
- L'Air Liquide, Societe Anonyme pour l'Etude et Exploitation des Procedes Geor...
- Gregoire BEASSE
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Method of Separating Carbon Dioxide from Liquid Acid Gas Streams
- Publication number 20140338395
- Publication date Nov 20, 2014
- Russell H. Oelfke
- B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information Patent Application
METHOD FOR PURIFICATION OF CARBON DIOXIDE USING LIQUID CARBON DIOXIDE
- Publication number 20140190206
- Publication date Jul 10, 2014
- UNION ENGINEERING A/S
- Rasmus Find
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
CARBON DIOXIDE CAPTURE AND LIQUEFACTION
- Publication number 20140041412
- Publication date Feb 13, 2014
- Arnold Keller
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Purification of Carbon Dioxide
- Publication number 20130283851
- Publication date Oct 31, 2013
- Air Products and Chemicals, Inc.
- Paul Higginbotham
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
SYSTEMS AND METHODS FOR INTEGRATED ENERGY STORAGE AND CRYOGENIC CAR...
- Publication number 20130139543
- Publication date Jun 6, 2013
- Larry L. Baxter
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESS FOR TREATING A NATURAL GAS CONTAINING CARBON DIOXIDE
- Publication number 20130036765
- Publication date Feb 14, 2013
- TOTAL SA
- Xavier Renaud
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
SYSTEMS AND METHODS FOR SEPARATING CONDENSABLE VAPORS FROM LIGHT GA...
- Publication number 20120297821
- Publication date Nov 29, 2012
- Brigham Young University
- Larry L. Baxter
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
METHOD AND APPARATUS FOR DRYING AND COMPRESSING CO2-RICH FLOW
- Publication number 20120272680
- Publication date Nov 1, 2012
- L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEO...
- Alain Briglia
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
SEPARATION OF GASES
- Publication number 20120118012
- Publication date May 17, 2012
- Michael Edward Bailey
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
SEPARATION OF CARBON DIOXIDE AND HYDROGEN
- Publication number 20120118010
- Publication date May 17, 2012
- Jonathan Alec Forsyth
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
SCRUBBING A GAS CONTAINING NITROGEN OXIDES
- Publication number 20120070354
- Publication date Mar 22, 2012
- L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEO...
- Alain Briglia
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
METHOD AND APPARATUS FOR PRODUCING AT LEAST ONE ARGON-ENRICHED FLUI...
- Publication number 20120067082
- Publication date Mar 22, 2012
- L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET EXPL
- Jean-Pierre Tranier
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Treatment of Flue Gas From an Oxyfuel Combustion Process
- Publication number 20120009109
- Publication date Jan 12, 2012
- Air Products and Chemicals, Inc.
- Andrew David Wright
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
CARBON DIOXIDE CAPTURE AND LIQUEFACTION
- Publication number 20120006054
- Publication date Jan 12, 2012
- Arnold Keller
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Configurations and Methods of Carbon Capture
- Publication number 20110271714
- Publication date Nov 10, 2011
- FLUOR TECHNOLOGIES CORPORATION
- Satish Reddy
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
METHOD FOR PURIFICATION OF CARBON DIOXIDE USING LIQUID CARBON DIOXIDE
- Publication number 20110265647
- Publication date Nov 3, 2011
- Rasmus Find
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
CARBON DIOXIDE CAPTURE FROM FLUE GAS
- Publication number 20110226010
- Publication date Sep 22, 2011
- Brigham Young University
- Larry L. Baxter
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Method For Burning Carbonated Fuels With Combustion Smoke Filtratio...
- Publication number 20100322843
- Publication date Dec 23, 2010
- L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEO...
- Philippe Court
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
PROCESS AND APPARATUS FOR THE SEPARATION OF A GASEOUS MIXTURE
- Publication number 20090013868
- Publication date Jan 15, 2009
- Arthur Darde
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
PROCESS AND APPARATUS FOR THE SEPARATION OF A GASEOUS MIXTURE
- Publication number 20090013717
- Publication date Jan 15, 2009
- L'Air Liquide, Societe Anonyme our l'Etude et l'Exploitation des Procedes Geo...
- Arthur DARDE
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Method and Device for Recovering Carbon Dioxide from Fumes
- Publication number 20080302133
- Publication date Dec 11, 2008
- GAZ DE FRANCE
- Samuel Saysset
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
METHOD TO CONDENSE AND RECOVER CARBON DIOXIDE (CO2) FROM CO2 CONTAI...
- Publication number 20080276800
- Publication date Nov 13, 2008
- Jose Lourenco
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
Integrated Method and Installation for Cryogenic Adsorption and Sep...
- Publication number 20080245101
- Publication date Oct 9, 2008
- Richard Dubettier-Grenier
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
CO2 SEPARATION APPARATUS AND PROCESS FOR OXY-COMBUSTION COAL POWER...
- Publication number 20080196587
- Publication date Aug 21, 2008
- Bao HA
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
PROCESS FOR RECYCLING OF TOP GAS DURING CO2 SEPARTION
- Publication number 20080196583
- Publication date Aug 21, 2008
- Bao HA
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Application
PROCESS FOR FEED GAS COOLING IN REBOILER DURING CO2 SEPARATION
- Publication number 20080196584
- Publication date Aug 21, 2008
- Bao HA
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Separating high boiling, i.e. less volatile components

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Method and plant for the purification of carbon dioxide using liqui...

Method for removing a foulant from a gas stream with minimal extern...

Systems and methods for separating condensable vapors from light ga...

Highly cost effective technology for capture of industrial emission...

Purification of carbon dioxide

Thermoacoustic refrigerator

Method and apparatus for separating a carbon dioxide-rich gas

Process for recovering hydrocarbons from crude carbon dioxide fluid

Purification of carbon dioxide

Method and apparatus for purifying a carbon dioxide-rich mixture at...

Method and apparatus for cooling a flow containing at least 35% car...

Alkalinity control agent supply method and apparatus for compressor...

Method and device for separating a mixture containing carbon dioxid...

Supply apparatus and supply method for supplying fluid carbon dioxide

Method to condense and recover carbon dioxide (CO2) from CO2 contai...

Process and apparatus for separating NO2 from a CO2 and NO2-contain...

Method and apparatus for removing carbon dioxide gas from coal comb...

Process for treating a natural gas containing carbon dioxide

Process and apparatus for separating NO2 from a CO2 and NO2—contain...

Systems and methods for integrated energy storage and cryogenic car...

Separation of carbon dioxide and hydrogen

Process and apparatus for the separation of a gaseous mixture

Carbon dioxide capture and liquefaction

Method and apparatus for drying and compressing CO2-rich flow

Method for burning carbonated fuels with combustion smoke filtratio...

Carbon dioxide capture and liquefaction

Configurations and methods of carbon capture

Scrubbing a gas containing nitrogen oxides

Treatment of flue gas from an oxyfuel combustion process

CO2 separation apparatus and process for oxy-combustion coal power...

Patents Applicationslast 30 patents

Carbon Dioxide Capture from Flu Gas

THERMOACOUSTIC REFRIGERATOR

METHOD AND PLANT FOR THE PURIFICATION OF CARBON DIOXIDE USING LIQUI...

Process and Apparatus for Separating NO2 from a CO2 and NO2- Contai...

Method of Separating Carbon Dioxide from Liquid Acid Gas Streams

METHOD FOR PURIFICATION OF CARBON DIOXIDE USING LIQUID CARBON DIOXIDE

CARBON DIOXIDE CAPTURE AND LIQUEFACTION

Purification of Carbon Dioxide

SYSTEMS AND METHODS FOR INTEGRATED ENERGY STORAGE AND CRYOGENIC CAR...

PROCESS FOR TREATING A NATURAL GAS CONTAINING CARBON DIOXIDE

SYSTEMS AND METHODS FOR SEPARATING CONDENSABLE VAPORS FROM LIGHT GA...

METHOD AND APPARATUS FOR DRYING AND COMPRESSING CO2-RICH FLOW

SEPARATION OF GASES

SEPARATION OF CARBON DIOXIDE AND HYDROGEN

SCRUBBING A GAS CONTAINING NITROGEN OXIDES

METHOD AND APPARATUS FOR PRODUCING AT LEAST ONE ARGON-ENRICHED FLUI...

Treatment of Flue Gas From an Oxyfuel Combustion Process

CARBON DIOXIDE CAPTURE AND LIQUEFACTION

Configurations and Methods of Carbon Capture

METHOD FOR PURIFICATION OF CARBON DIOXIDE USING LIQUID CARBON DIOXIDE

CARBON DIOXIDE CAPTURE FROM FLUE GAS

Method For Burning Carbonated Fuels With Combustion Smoke Filtratio...

PROCESS AND APPARATUS FOR THE SEPARATION OF A GASEOUS MIXTURE

PROCESS AND APPARATUS FOR THE SEPARATION OF A GASEOUS MIXTURE

Method and Device for Recovering Carbon Dioxide from Fumes

METHOD TO CONDENSE AND RECOVER CARBON DIOXIDE (CO2) FROM CO2 CONTAI...

Integrated Method and Installation for Cryogenic Adsorption and Sep...

CO2 SEPARATION APPARATUS AND PROCESS FOR OXY-COMBUSTION COAL POWER...

PROCESS FOR RECYCLING OF TOP GAS DURING CO2 SEPARTION

PROCESS FOR FEED GAS COOLING IN REBOILER DURING CO2 SEPARATION