ClassID:

160333

F25J2200/04 - CPC Classification

Classification description:

Processes or apparatus using separation by rectification in a dual pressure main column system

Sub-classes:
Recent Application in this class:
#1
20260139898
2026-05-21

SIDE DRAW REFLUX HEAVY HYDROCARBON REMOVAL SYSTEM AND METHOD

#2
20250264273
2025-08-21

PHASE IMPLEMENTATION OF NATURAL GAS LIQUID RECOVERY PLANTS

#3
20250257941
2025-08-14

AIR SEPARATION UNIT

#4
20240353173
2024-10-24

ULTRA-HIGH-PURITY OXYGEN PRODUCTION METHOD AND ULTRA-HIGH-PURITY OXYGEN PRODUCTION APPARATUS

#5
20240337441
2024-10-10

LEAN GAS LNG HEAVIES REMOVAL PROCESS USING NGL

#6
20240263873
2024-08-08

Device and method for recovering carbon dioxide and nitrogen from flue gas

#7
20230090158
2023-03-23

METHOD AND APPARATUS FOR CRYOGENIC AIR SEPARATION

#8
20220373257
2022-11-24

Pretreatment of natural gas prior to liquefaction

#9
20220364787
2022-11-17

HEAT EXCHANGER FOR A LIQUEFIED NATURAL GAS FACILITY

#10
20220325952
2022-10-13

METHOD AND APPARATUS FOR PRODUCING PRODUCT NITROGEN GAS AND PRODUCT ARGON

#11
20220214104
2022-07-07

METHOD FOR EXTRACTING NITROGEN FROM A NATURAL GAS STREAM OR A BIO-METHANE GAS STREAM CONTAINING ACID GASES

#12
20220170701
2022-06-02

APPARATUS FOR EXCHANGING HEAT AND MATERIAL

#13
20220126263
2022-04-28

MATRIX INTEGRATING AT LEAST ONE HEAT EXCHANGE FUNCTION AND ONE DISTILLATION FUNCTION

#14
20210381760
2021-12-09

Phase implementation of natural gas liquid recovery plants

#15
20210372696
2021-12-02

ENHANCEMENTS TO A DUAL COLUMN NITROGEN PRODUCING CRYOGENIC AIR SEPARATION UNIT

#16
20210310732
2021-10-07

Product gas supply quantity adjustment device and air separation apparatus comprising same

#17
20210172677
2021-06-10

CRYOGENIC PROCESS FOR REMOVING NITROGEN FROM A DISCHARGE GAS

#18
20210156613
2021-05-27

METHODS AND SYSTEMS FOR REMOVING NITROGEN FROM NATURAL GAS

#19
20210116175
2021-04-22

System and method for the production of argon in an air separation plant facility or enclave having multiple cryogenic air separation units

#20
20210095921
2021-04-01

INTEGRATED METHODS AND CONFIGURATIONS FOR PROPANE RECOVERY IN BOTH ETHANE RECOVERY AND ETHANE REJECTION

#21
20210095918
2021-04-01

Lean gas LNG heavies removal process using NGL

#22
20200355427
2020-11-12

System and method for recovering NGLS using dual compression

#23
20200232703
2020-07-23

System and method for removing freezing components from a feed gas

#24
20200158428
2020-05-21

Method for utilizing waste air to improve the capacity of an existing air separation unit

#25
20200158427
2020-05-21

Method for utilizing waste air to improve the capacity of an existing air separation unit

#26
20200132368
2020-04-30

Apparatus for the distillation of air by cryogenic distillation

#27
20200116427
2020-04-16

OVERHEAD RECYCLE PROCESS APPARATUS AND METHOD OF OVERHEAD RECYCLE PROCESSING OF HYDROCARBONS

#28
20190293347
2019-09-26

METHOD AND APPARATUS FOR PRODUCING PRODUCT NITROGEN GAS AND PRODUCT ARGON

#29
20190277565
2019-09-12

BATH-TYPE VAPORISER-CONDENSER FOR A METHOD OF CRYOGENICALLY SEPARATING A NATURAL GAS STREAM

#30
20190271503
2019-09-05

PROCESS FOR RECOVERING PROPANE AND AN ADJUSTABLE AMOUNT OF ETHANE FROM NATURAL GAS

#31
20190242646
2019-08-08

Method and apparatus for obtaining pressurized nitrogen by cryogenic separation of air

#32
20190242645
2019-08-08

Systems and methods for LNG production with propane and ethane recovery

#33
20190204007
2019-07-04

System and method for removing freezing components from a feed gas

#34
20190154333
2019-05-23

Configurations and methods for NGL recovery for high nitrogen content feed gases

#35
20190136141
2019-05-09

Apparatus for separation and recovery of hydrocarbons from LNG

#36
20190128600
2019-05-02

Method and apparatus for separating hydrocarbons

#37
20190120550
2019-04-25

Phase implementation of natural gas liquid recovery plants

#38
20190049178
2019-02-14

METHOD FOR DE-ICING A DEVICE FOR SEPARATING AIR BY CRYOGENIC DISTILLATION AND DEVICE ADAPTED TO BE DE-ICED USING THIS METHOD

#39
20190049177
2019-02-14

Apparatus and method for separation of air by cryogenic distillation

#40
20190041130
2019-02-07

Method and device for separating air by cryogenic distillation

#41
20190041129
2019-02-07

Device and method for separating air by cryogenic distillation

#42
20190041128
2019-02-07

Recovery Of Helium From Nitrogen-Rich Streams

#43
20180356152
2018-12-13

System and method for enhanced argon recovery from a feed stream comprising hydrogen, methane, nitrogen and argon

#44
20180332454
2018-11-15

System and method for reducing nitrogen content of GSP/expander product streams for pipeline transport

#45
20180306498
2018-10-25

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

#46
20180266760
2018-09-20

Ethane recovery or ethane rejection operation

#47
20180266756
2018-09-20

Systems and methods for flexible propane recovery

#48
20180245845
2018-08-30

Hydrocarbon Gas Processing

#49
20180202713
2018-07-19

Method and system for cooling and separating a hydrocarbon stream

#50
20180087833
2018-03-29

PROCESS FOR REMOVING NITROGEN FROM HIGH-FLOW NATURAL GAS

#51
20180066889
2018-03-08

Pretreatment of natural gas prior to liquefaction

#52
20180058756
2018-03-01

Hydrocarbon gas processing

#53
20180058755
2018-03-01

Hydrocarbon gas processing

#54
20180058754
2018-03-01

Hydrocarbon gas processing

#55
20180051215
2018-02-22

Method for removing nitrogen from a hydrocarbon-rich fraction

#56
20180031314
2018-02-01

System and method for separating wide variations in methane and nitrogen

#57
20170336137
2017-11-23

Systems and methods for LNG production with propane and ethane recovery

#58
20170320793
2017-11-09

Method and apparatus for producing hydrocarbons

#59
20170276427
2017-09-28

Systems And Methods For Enhanced Recovery Of NGL Hydrocarbons

#60
20170268821
2017-09-21

System and method for enhanced argon recovery from a feed stream comprising hydrogen, methane, nitrogen and argon

#61
20170234612
2017-08-17

Treatment of nitrogen-rich natural gas streams

#62
20170211879
2017-07-27

Process and apparatus for producing pressurized gaseous nitrogen by cryogenic separation of air

#63
20170211878
2017-07-27

Method and unit for separating the light and heavy components of natural gas

#64
20170051970
2017-02-23

Ethane recovery and ethane rejection methods and configurations

#65
20170030634
2017-02-02

Using methane rejection to process a natural gas stream

#66
20170023294
2017-01-26

System and method for separating wide variations in methane and nitrogen

#67
20160313058
2016-10-27

Process and apparatus for separating NOfrom a COand NO-containing fluid

#68
20160231052
2016-08-11

Methods and configuration of an NGL recovery process for low pressure rich feed gas

#69
20160187058
2016-06-30

Ethane recovery methods and configurations

#70
20150300733
2015-10-22

Nitrogen removal with ISO-pressure open refrigeration natural gas liquids recovery

#71
20150276309
2015-10-01

Process and apparatus for separating NOfrom a COand NO—containing fluid

#72
20150276308
2015-10-01

Process for the removal of COfrom acid gas

#73
20150253074
2015-09-10

Hydrocarbon gas processing

#74
20150253071
2015-09-10

Heat exchanger for a liquefied natural gas facility

#75
20150233633
2015-08-20

LNG recovery from syngas using a mixed refrigerant

#76
20150184932
2015-07-02

Process for recovering hydrocarbons from crude carbon dioxide fluid

#77
20150184931
2015-07-02

Systems and methods for flexible propane recovery

#78
20150114033
2015-04-30

Purification of carbon dioxide

#79
20150114032
2015-04-30

Purification of carbon dioxide

#80
20150059402
2015-03-05

Method and device for separating a mixture containing carbon dioxide by means of distillation

#81
20140260420
2014-09-18

Flexible NGL recovery methods and configurations

#82
20140130541
2014-05-15

Nitrogen removal with ISO-pressure open refrigeration natural gas liquids recovery

#83
20140026615
2014-01-30

CONFIGURATIONS AND METHODS FOR DEEP FEED GAS HYDROCARBON DEWPOINTING

#84
20140013797
2014-01-16

System and method for removing excess nitrogen from gas subcooled expander operations

#85
20140007616
2014-01-09

Ethane recovery and ethane rejection methods and configurations

#86
20130340473
2013-12-26

Method for producing a C+ hydrocarbon-rich fraction and a methane- and ethane-rich stream from a hydrocarbon-rich feed stream, and related facility

#87
20130219957
2013-08-29

ISO-pressure open refrigeration NGL recovery

#88
20130086942
2013-04-11

Device for the cryogenic separation of air

#89
20130061633
2013-03-14

CONFIGURATIONS AND METHODS OF INTEGRATED NGL RECOVERY AND LNG LIQUEFACTION

#90
20130061632
2013-03-14

Integrated NGL Recovery In the Production Of Liquefied Natural Gas

#91
20130014390
2013-01-17

Configurations and methods for retrofitting an NGL recovery plant

#92
20120324943
2012-12-27

Two Step Nitrogen and Methane Separation Process

#93
20120304690
2012-12-06

ISO-pressure open refrigeration NGL recovery

#94
20120240621
2012-09-27

Device for the low-temperature separation of air

#95
20120118007
2012-05-17

PROCESS OF HEAT INTEGRATING FEED AND COMPRESSOR DISCHARGE STREAMS WITH HEAVIES REMOVAL SYSTEM IN A LIQUEFIED NATURAL GAS FACILITY

#96
20120090355
2012-04-19

PROCESS AND APPARATUS FOR SEPARATION OF HYDROCARBONS AND NITROGEN

#97
20120085127
2012-04-12

Method for enhanced recovery of ethane, olefins, and heavier hydrocarbons from low pressure gas

#98
20120067082
2012-03-22

METHOD AND APPARATUS FOR PRODUCING AT LEAST ONE ARGON-ENRICHED FLUID AND AT LEAST ONE OXYGEN-ENRICHED FLUID FROM A RESIDUAL FLUID

#99
20120047946
2012-03-01

Method for separating off nitrogen from natural gas

#100
20120047942
2012-03-01

METHOD, SYSTEM, AND PRODUCTION AND STORAGE FACILITY FOR OFFSHORE LPG and LNG PROCESSING OF ASSOCIATED GASES

#101
20120042690
2012-02-23

LNG facility with integrated NGL recovery for enhanced liquid recovery and product flexibility

#102
20120017639
2012-01-26

METHODS AND SYSTEMS FOR STORING AND TRANSPORTING GASES

#103
20120000245
2012-01-05

Methods and Systems for Recovering Liquified Petroleum Gas from Natural Gas

#104
20110289963
2011-12-01

Process for separating nitrogen from a natural gas stream with nitrogen stripping in the production of liquefied natural gas

#105
20110277500
2011-11-17

Nitrogen removal from natural gas

#106
20110265511
2011-11-03

NATURAL GAS LIQUEFACTION METHOD WITH ENHANCED PROPANE RECOVERY

#107
20110239701
2011-10-06

METHOD OF REJECTING NITROGEN FROM A HYDROCARBON STREAM TO PROVIDE A FUEL GAS STREAM AND AN APPARATUS THEREFOR

#108
20110167868
2011-07-14

Hydrocarbon gas processing

#109
20110118524
2011-05-19

PROCESS AND APPARATUS FOR C2 RECOVERY

#110
20110036120
2011-02-17

METHOD AND APPARATUS FOR RECOVERING AND FRACTIONATING A MIXED HYDROCARBON FEED STREAM

#111
20110023536
2011-02-03

Method and apparatus for cooling a hydrocarbon stream

#112
20110011127
2011-01-20

Process for controlling liquefied natural gas heating value

#113
20100223950
2010-09-09

Nitrogen removal with iso-pressure open refrigeration natural gas liquids recovery

#114
20100206003
2010-08-19

Configurations and methods for improved natural gas liquids recovery

#115
20100122542
2010-05-20

METHOD AND APPARATUS FOR ADJUSTING HEATING VALUE OF NATURAL GAS

#116
20100087696
2010-04-08

Process and apparatus for Crecovery

#117
20100011810
2010-01-21

NGL Recovery Methods and Configurations

#118
20100011809
2010-01-21

Ethane recovery methods and configurations

#119
20090301132
2009-12-10

Optimized heavies removal system in an LNG facility

#120
20090293538
2009-12-03

NATURAL GAS LIQUEFACTION

#121
20090282864
2009-11-19

ISO-pressure open refrigeration NGL recovery

#122
20090277219
2009-11-12

Configurations and methods for offshore LNG regasification and BTU control

#123
20090277218
2009-11-12

Method and apparatus for liquefying a natural gas stream

#124
20090221864
2009-09-03

High Ethane Recovery Configurations And Methods In LNG Regasification Facility

#125
20090211296
2009-08-27

METHOD AND APPARATUS FOR SEPARATING A FRACTION RICH IN C2+ FROM LIQUEFIED NATURAL GAS

#126
20090194460
2009-08-06

Method and apparatus for treating a hydrocarbon stream

#127
20090173103
2009-07-09

Cryogenic process utilizing high pressure absorber column

#128
20090126401
2009-05-21

Dual-refluxed heavies removal column in an LNG facility

#129
20090113931
2009-05-07

Multiple reflux stream hydrocarbon recovery process

#130
20090113930
2009-05-07

Multiple reflux stream hydrocarbon recovery process

#131
20090112037
2009-04-30

Process for Recovering Ethylene From an Autothermal Cracking Reactor Effluent

#132
20090107175
2009-04-30

Multiple reflux stream hydrocarbon recovery process

#133
20090013868
2009-01-15

PROCESS AND APPARATUS FOR THE SEPARATION OF A GASEOUS MIXTURE

#134
20090013717
2009-01-15

Process and apparatus for the separation of a gaseous mixture

#135
20080271480
2008-11-06

Intergrated Ngl Recovery and Lng Liquefaction

#136
20080264100
2008-10-30

Lng Regasification Configurations and Methods

#137
20080256977
2008-10-23

Hydrocarbon recovery and light product purity when processing gases with physical solvents

#138
20080202162
2008-08-28

Cryogenic Process Utilizing High Pressure Absorber Column

#139
20080202161
2008-08-28

METHOD FOR ADJUSTING HEATING VALUE OF LNG

#140
20080196587
2008-08-21

COseparation apparatus and process for oxy-combustion coal power plants

#141
20080196585
2008-08-21

Process for vaporizing the product COat two different pressures during COseparation

#142
20080196584
2008-08-21

Process for feed gas cooling in reboiler during COseparation

#143
20080196583
2008-08-21

PROCESS FOR RECYCLING OF TOP GAS DURING CO2 SEPARTION

#144
20080141712
2008-06-19

Integrated olefin recovery process

#145
20080096985
2008-04-24

Light ends recovery process for a GTL plant

#146
20080072620
2008-03-27

Treating of a crude containing natural gas

#147
20080028790
2008-02-07

Natural gas liquefaction

#148
20080022716
2008-01-31

LNG system employing stacked vertical heat exchangers to provide liquid reflux stream

#149
20080016910
2008-01-24

Integrated NGL recovery in the production of liquefied natural gas

#150
20070240450
2007-10-18

Flexible NGL process and methods

#151
20070204651
2007-09-06

Natural gas liquid recovery

#152
20070157663
2007-07-12

Configurations and methods of integrated NGL recovery and LNG liquefaction

#153
20070101732
2007-05-10

Power cycle with liquefied natural gas regasification

#154
20070056318
2007-03-15

Enhanced heavies removal/LPG recovery process for LNG facilities

#155
20070012072
2007-01-18

LNG FACILITY WITH INTEGRATED NGL EXTRACTION TECHNOLOGY FOR ENHANCED NGL RECOVERY AND PRODUCT FLEXIBILITY

#156
20060283207
2006-12-21

Hydrocarbon gas processing

#157
20060260356
2006-11-23

Liquid natural gas processing

#158
20060218968
2006-10-05

High propane recovery process and configurations

#159
20060150672
2006-07-13

Internal refrigeration for enhanced NGL recovery

#160
20060144081
2006-07-06

Method and installation for producing treated natural gas, a C3+ hydrocarbon cut and an ethane rich stream

#161
20060086139
2006-04-27

LNG system employing optimized heat exchangers to provide liquid reflux stream

#162
20060032269
2006-02-16

Hydrocarbon gas processing

#163
20060000234
2006-01-05

Liquefied natural gas processing

#164
20050268649
2005-12-08

Natural gas liquefaction

#165
20050255012
2005-11-17

Low pressure NGL plant configurations

#166
20050247078
2005-11-10

Natural gas liquefaction

#167
20050204774
2005-09-22

Hydrocarbon recovery process utilizing enhanced reflux streams

#168
20050198999
2005-09-15

Use of cryogenic temperatures in processing gases containing light components with physical solvents

#169
20050155381
2005-07-21

Method and apparatus for reducing C2 and C3 at LNG receiving terminals

#170
20050113468
2005-05-26

Natural gas liquefaction and conversion method

#171
20050066686
2005-03-31

Liquefied natural gas processing

#172
20050005636
2005-01-13

Cryogenic liquid natural gas recovery process

#173
20050000245
2005-01-06

Method and installation for separating a gas containing methane and ethane with two columns operating at two different pressures