ClassID:

160350

F25J2200/78 - CPC Classification

Classification description:

Processes or apparatus using separation by rectification Refluxing the column with a liquid stream originating from an upstream or downstream fractionator column

Recent Application in this class:
#1
20250264273
2025-08-21

PHASE IMPLEMENTATION OF NATURAL GAS LIQUID RECOVERY PLANTS

#2
20240011706
2024-01-11

METHOD FOR REGULATING A DEVICE FOR SEPARATING AIR BY CRYOGENIC DISTILLATION

#3
20230235955
2023-07-27

System and Method for Separating Methane and Nitrogen with Reduced Horsepower Demands

#4
20230194161
2023-06-22

STANDALONE HIGH-PRESSURE HEAVIES REMOVAL UNIT FOR LNG PROCESSING

#5
20220373257
2022-11-24

Pretreatment of natural gas prior to liquefaction

#6
20220364787
2022-11-17

HEAT EXCHANGER FOR A LIQUEFIED NATURAL GAS FACILITY

#7
20210381760
2021-12-09

Phase implementation of natural gas liquid recovery plants

#8
20210180864
2021-06-17

System and method for separating methane and nitrogen with reduced horsepower demands

#9
20210123671
2021-04-29

METHOD AND APPARATUS FOR SEPARATING AIR BY CRYOGENIC DISTILLATION

#10
20210116173
2021-04-22

Standalone high-pressure heavies removal unit for LNG processing

#11
20210116172
2021-04-22

Systems and processes for upgrading natural gas liquids from shale gas

#12
20200386090
2020-12-10

Method to recover and process methane and condensates from flare gas systems

#13
20200370825
2020-11-26

Method and apparatus for separating air by cryogenic distillation

#14
20200232703
2020-07-23

System and method for removing freezing components from a feed gas

#15
20200116427
2020-04-16

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

#16
20200103166
2020-04-02

NITROGEN RECOVERY APPARATUS AND METHOD OF RECOVERING NITROGEN

#17
20200072547
2020-03-05

System and method for separating natural gas liquid and nitrogen from natural gas streams

#18
20190323769
2019-10-24

Mixed Refrigerant Liquefaction System and Method with Pre-Cooling

#19
20190277565
2019-09-12

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

#20
20190271503
2019-09-05

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

#21
20190242645
2019-08-08

Systems and methods for LNG production with propane and ethane recovery

#22
20190204007
2019-07-04

System and method for removing freezing components from a feed gas

#23
20190154333
2019-05-23

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

#24
20190136141
2019-05-09

Apparatus for separation and recovery of hydrocarbons from LNG

#25
20190128600
2019-05-02

Method and apparatus for separating hydrocarbons

#26
20190120550
2019-04-25

Phase implementation of natural gas liquid recovery plants

#27
20190056176
2019-02-21

Process and device for the cryogenic separation of synthesis gas

#28
20190046921
2019-02-14

Method of preparing natural gas at a gas pressure reduction stations to produce liquid natural gas (LNG)

#29
20190003766
2019-01-03

System and method for rare gas recovery

#30
20180356152
2018-12-13

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

#31
20180320961
2018-11-08

OPTIMIZATION OF A PROCESS FOR DENITROGENATION OF A NATURAL GAS STREAM

#32
20180320960
2018-11-08

REFLUX OF DEMETHENIZATION COLUMNS

#33
20180266760
2018-09-20

Ethane recovery or ethane rejection operation

#34
20180266756
2018-09-20

Systems and methods for flexible propane recovery

#35
20180265795
2018-09-20

Method of preparing natural gas to produce liquid natural gas (LNG)

#36
20180231306
2018-08-16

System and method for separating natural gas liquid and nitrogen from natural gas streams

#37
20180087833
2018-03-29

PROCESS FOR REMOVING NITROGEN FROM HIGH-FLOW NATURAL GAS

#38
20180066889
2018-03-08

Pretreatment of natural gas prior to liquefaction

#39
20180038645
2018-02-08

Plant for producing oxygen by cryogenic air separation

#40
20180003430
2018-01-04

Mixed refrigerant liquefaction system and method

#41
20170336138
2017-11-23

INTEGRATED PROCESS FOR NGL (NATURAL GAS LIQUIDS RECOVERY) AND LNG (LIQUEFACTION OF NATURAL GAS)

#42
20170336137
2017-11-23

Systems and methods for LNG production with propane and ethane recovery

#43
20170320793
2017-11-09

Method and apparatus for producing hydrocarbons

#44
20170268820
2017-09-21

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

#45
20170211878
2017-07-27

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

#46
20170122661
2017-05-04

System and method for argon recovery from the tail gas of an ammonia production plant

#47
20160377341
2016-12-29

HYDROCARBON GAS PROCESSING FEATURING A COMPRESSED REFLUX STREAM FORMED BY COMBINING A PORTION OF COLUMN RESIDUE GAS WITH A DISTILLATION VAPOR STREAM WITHDRAWN FROM THE SIDE OF THE COLUMN

#48
20160258675
2016-09-08

SPLIT FEED ADDITION TO ISO-PRESSURE OPEN REFRIGERATION LPG RECOVERY

#49
20160231052
2016-08-11

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

#50
20150300733
2015-10-22

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

#51
20150276308
2015-10-01

Process for the removal of COfrom acid gas

#52
20150253074
2015-09-10

Hydrocarbon gas processing

#53
20150253071
2015-09-10

Heat exchanger for a liquefied natural gas facility

#54
20150233633
2015-08-20

LNG recovery from syngas using a mixed refrigerant

#55
20150184931
2015-07-02

Systems and methods for flexible propane recovery

#56
20150114033
2015-04-30

Purification of carbon dioxide

#57
20150114032
2015-04-30

Purification of carbon dioxide

#58
20150059402
2015-03-05

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

#59
20140338396
2014-11-20

Methods for separating hydrocarbon gases

#60
20140182331
2014-07-03

Integrated process for NGL (natural gas liquids recovery) and LNG (liquefaction of natural gas)

#61
20140130541
2014-05-15

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

#62
20140026615
2014-01-30

CONFIGURATIONS AND METHODS FOR DEEP FEED GAS HYDROCARBON DEWPOINTING

#63
20140007616
2014-01-09

Ethane recovery and ethane rejection methods and configurations

#64
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

#65
20130219959
2013-08-29

Process and apparatus for the separation of air by cryogenic distillation

#66
20130199238
2013-08-08

Liquefied natural gas plant with ethylene independent heavies recovery system

#67
20130061633
2013-03-14

CONFIGURATIONS AND METHODS OF INTEGRATED NGL RECOVERY AND LNG LIQUEFACTION

#68
20130061632
2013-03-14

Integrated NGL Recovery In the Production Of Liquefied Natural Gas

#69
20130014390
2013-01-17

Configurations and methods for retrofitting an NGL recovery plant

#70
20120118007
2012-05-17

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

#71
20120097520
2012-04-26

PROCESS AND APPARATUS FOR SEPARATION OF HYDROCARBONS AND NITROGEN

#72
20120090355
2012-04-19

PROCESS AND APPARATUS FOR SEPARATION OF HYDROCARBONS AND NITROGEN

#73
20120085128
2012-04-12

Method for Recovery of Propane and Heavier Hydrocarbons

#74
20120085127
2012-04-12

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

#75
20120042690
2012-02-23

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

#76
20120041248
2012-02-16

Process for removing nitrogen

#77
20120024690
2012-02-02

Multistage cyclonic fluid separator

#78
20120017640
2012-01-26

PROCESS FOR SEPARATING OFF NITROGEN

#79
20120000246
2012-01-05

Liquefied natural gas and hydrocarbon gas processing

#80
20120000245
2012-01-05

Methods and Systems for Recovering Liquified Petroleum Gas from Natural Gas

#81
20110289963
2011-12-01

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

#82
20110277500
2011-11-17

Nitrogen removal from natural gas

#83
20110271713
2011-11-10

Purification of carbon dioxide

#84
20110265511
2011-11-03

NATURAL GAS LIQUEFACTION METHOD WITH ENHANCED PROPANE RECOVERY

#85
20110257276
2011-10-20

Process and apparatus for the production of hydrocarbon compounds from methane

#86
20110232328
2011-09-29

Hydrocarbon gas processing

#87
20110226013
2011-09-22

Hydrocarbon gas processing

#88
20110209499
2011-09-01

METHOD FOR REMOVING NITROGEN

#89
20110209498
2011-09-01

PROCESS FOR SEPARATING OFF NITROGEN

#90
20110167868
2011-07-14

Hydrocarbon gas processing

#91
20110118524
2011-05-19

PROCESS AND APPARATUS FOR C2 RECOVERY

#92
20110067443
2011-03-24

Hydrocarbon Gas Processing

#93
20110067442
2011-03-24

Hydrocarbon gas processing featuring a compressed reflux stream formed by combining a portion of column residue gas with a distillation vapor stream withdrawn from the side of the column

#94
20110067441
2011-03-24

Hydrocarbon Gas Processing

#95
20110011127
2011-01-20

Process for controlling liquefied natural gas heating value

#96
20100287985
2010-11-18

Liquefied Natural Gas And Hydrocarbon Gas Processing

#97
20100287984
2010-11-18

Hydrocarbon gas processing including a single equipment item processing assembly

#98
20100287983
2010-11-18

Hydrocarbon gas processing

#99
20100275647
2010-11-04

Hydrocarbon gas processing

#100
20100223950
2010-09-09

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

#101
20100206003
2010-08-19

Configurations and methods for improved natural gas liquids recovery

#102
20100107688
2010-05-06

Separation Method Using A Column With A Corrugated Cross Structure Packing For Separating A Gaseous Mixture

#103
20100087696
2010-04-08

Process and apparatus for Crecovery

#104
20090301132
2009-12-10

Optimized heavies removal system in an LNG facility

#105
20090293538
2009-12-03

NATURAL GAS LIQUEFACTION

#106
20090282865
2009-11-19

Liquefied Natural Gas and Hydrocarbon Gas Processing

#107
20090277219
2009-11-12

Configurations and methods for offshore LNG regasification and BTU control

#108
20090277218
2009-11-12

Method and apparatus for liquefying a natural gas stream

#109
20090277217
2009-11-12

Enhanced nitrogen removal in an LNG facility

#110
20090193846
2009-08-06

Recovery of Carbon Monoxide and Hydrogen From Hydrocarbon Streams

#111
20090173103
2009-07-09

Cryogenic process utilizing high pressure absorber column

#112
20090133437
2009-05-28

Recovery of Co-Rich Product From a Mixed Gas Containing Heavy Hydrocarbons

#113
20090126401
2009-05-21

Dual-refluxed heavies removal column in an LNG facility

#114
20090113931
2009-05-07

Multiple reflux stream hydrocarbon recovery process

#115
20090113930
2009-05-07

Multiple reflux stream hydrocarbon recovery process

#116
20090107175
2009-04-30

Multiple reflux stream hydrocarbon recovery process

#117
20090100862
2009-04-23

Hydrocarbon gas processing

#118
20080282731
2008-11-20

Liquefied natural gas processing

#119
20080271480
2008-11-06

Intergrated Ngl Recovery and Lng Liquefaction

#120
20080202162
2008-08-28

Cryogenic Process Utilizing High Pressure Absorber Column

#121
20080173585
2008-07-24

Purification of carbon dioxide

#122
20080141713
2008-06-19

Advanced C2-splitter feed rectifier

#123
20080141712
2008-06-19

Integrated olefin recovery process

#124
20080096985
2008-04-24

Light ends recovery process for a GTL plant

#125
20080078205
2008-04-03

Hydrocarbon Gas Processing

#126
20080066494
2008-03-20

Light component separation from a carbon dioxide mixture

#127
20080066493
2008-03-20

Treating Liquefied Natural Gas

#128
20080066492
2008-03-20

Treating Liquefied Natural Gas

#129
20080028790
2008-02-07

Natural gas liquefaction

#130
20080016910
2008-01-24

Integrated NGL recovery in the production of liquefied natural gas

#131
20070240450
2007-10-18

Flexible NGL process and methods

#132
20070204651
2007-09-06

Natural gas liquid recovery

#133
20070193303
2007-08-23

Scalable capacity liquefied natural gas plant

#134
20070157663
2007-07-12

Configurations and methods of integrated NGL recovery and LNG liquefaction

#135
20070056318
2007-03-15

Enhanced heavies removal/LPG recovery process for LNG facilities

#136
20070012072
2007-01-18

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

#137
20070012071
2007-01-18

LNG facility providing enhanced liquid recovery and product flexibility

#138
20060283207
2006-12-21

Hydrocarbon gas processing

#139
20060230783
2006-10-19

Nitrogen rejection method and apparatus

#140
20060218968
2006-10-05

High propane recovery process and configurations

#141
20060150672
2006-07-13

Internal refrigeration for enhanced NGL recovery

#142
20060144081
2006-07-06

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

#143
20060101851
2006-05-18

Light component separation from a carbon dioxide mixture

#144
20060074132
2006-04-06

Process and apparatus for the production of hydrocarbon compounds from methane

#145
20060032269
2006-02-16

Hydrocarbon gas processing

#146
20050268649
2005-12-08

Natural gas liquefaction

#147
20050268648
2005-12-08

Enhanced operation of LNG facility equipped with refluxed heavies removal column

#148
20050247078
2005-11-10

Natural gas liquefaction

#149
20050229634
2005-10-20

Hydrocarbon gas processing for rich gas streams

#150
20050204774
2005-09-22

Hydrocarbon recovery process utilizing enhanced reflux streams

#151
20050113468
2005-05-26

Natural gas liquefaction and conversion method

#152
20050086976
2005-04-28

Enhanced operation of LNG facility equipped with refluxed heavies removal column

#153
20050000245
2005-01-06

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