ClassID:

160349

F25J2200/76 - CPC Classification

Classification description:

Processes or apparatus using separation by rectification Refluxing the column with condensed overhead gas being cycled in a quasi-closed loop refrigeration cycle

Recent Application in this class:
#1
20260146785
2026-05-28

Nitrogen Rejection Unit with Mixed Refrigerant Cooling System and Method

#2
20260118053
2026-04-30

METHODS AND CONFIGURATION FOR RETROFITTING NGL PLANT FOR HIGH ETHANE RECOVERY

#3
20240060716
2024-02-22

Processes and Systems for Separating Liquified Natural Gas

#4
20230349633
2023-11-02

Methods and configuration for retrofitting NGL plant for high ethane recovery

#5
20230194161
2023-06-22

STANDALONE HIGH-PRESSURE HEAVIES REMOVAL UNIT FOR LNG PROCESSING

#6
20220373257
2022-11-24

Pretreatment of natural gas prior to liquefaction

#7
20220252343
2022-08-11

PROCESS AND APPARATUS FOR HEAVY HYDROCARBON REMOVAL FROM LEAN NATURAL GAS BEFORE LIQUEFACTION

#8
20210372698
2021-12-02

ENHANCEMENTS TO A DUAL COLUMN NITROGEN PRODUCING CRYOGENIC AIR SEPARATION UNIT

#9
20210123671
2021-04-29

METHOD AND APPARATUS FOR SEPARATING AIR BY CRYOGENIC DISTILLATION

#10
20210116174
2021-04-22

HYDROCARBON GAS PROCESSING

#11
20210116173
2021-04-22

Standalone high-pressure heavies removal unit for LNG processing

#12
20210095921
2021-04-01

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

#13
20200370825
2020-11-26

Method and apparatus for separating air by cryogenic distillation

#14
20200284507
2020-09-10

Methods for providing refrigeration in natural gas liquids recovery plants

#15
20200232703
2020-07-23

System and method for removing freezing components from a feed gas

#16
20200208911
2020-07-02

METHOD FOR PRODUCING A METHANE-RICH STREAM AND A C2+ HYDROCARBON-RICH STREAM, AND ASSOCIATED EQUIPMENT

#17
20200141639
2020-05-07

Methods and configuration for retrofitting NGL plant for high ethane recovery

#18
20200103166
2020-04-02

NITROGEN RECOVERY APPARATUS AND METHOD OF RECOVERING NITROGEN

#19
20200033055
2020-01-30

Process and apparatus for the cryogenic separation of a mixture of carbon monoxide, hydrogen and methane for the production of CH4

#20
20190368810
2019-12-05

Method and installation for cryogenic separation of a gaseous mixture by methane scrubbing

#21
20190271503
2019-09-05

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

#22
20190242645
2019-08-08

Systems and methods for LNG production with propane and ethane recovery

#23
20190204007
2019-07-04

System and method for removing freezing components from a feed gas

#24
20190154333
2019-05-23

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

#25
20190128601
2019-05-02

Process and plant for the combination production of a mixture of hydrogen and nitrogen and also of carbon monoxide by cryogenic distillation and cryogenic scrubbing

#26
20190003766
2019-01-03

System and method for rare gas recovery

#27
20180356152
2018-12-13

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

#28
20180347899
2018-12-06

Hydrocarbon gas processing

#29
20180347898
2018-12-06

Hydrocarbon gas processing

#30
20180328654
2018-11-15

METHODS FOR RECOVERING ALKENES AND NITROGEN FROM PROCESS GAS STREAMS

#31
20180251373
2018-09-06

Method and apparatus for producing a mixture of carbon monoxide and hydrogen

#32
20180202610
2018-07-19

Process for expansion and storage of a flow of liquefied natural gas from a natural gas liquefaction plant, and associated plant

#33
20180180356
2018-06-28

Simplified method for producing a methane-rich stream and a C2+ hydrocarbon-rich fraction from a feed natural-gas stream, and associated facility

#34
20180149425
2018-05-31

PROCESSES FOR PRODUCING A NATURAL GAS STREAM

#35
20180066889
2018-03-08

Pretreatment of natural gas prior to liquefaction

#36
20180058757
2018-03-01

Process and apparatus for producing carbon monoxide

#37
20180003430
2018-01-04

Mixed refrigerant liquefaction system and method

#38
20170336138
2017-11-23

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

#39
20170336137
2017-11-23

Systems and methods for LNG production with propane and ethane recovery

#40
20170284737
2017-10-05

Integrated nitrogen removal in the production of liquefied natural gas using intermediate feed gas separation

#41
20170276427
2017-09-28

Systems And Methods For Enhanced Recovery Of NGL Hydrocarbons

#42
20170268820
2017-09-21

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

#43
20170176099
2017-06-22

PROCESS AND APPARATUS FOR HEAVY HYDROCARBON REMOVAL FROM LEAN NATURAL GAS BEFORE LIQUEFACTION

#44
20170160008
2017-06-08

SYSTEM AND METHOD FOR LIQUEFACTION OF NATURAL GAS

#45
20170122661
2017-05-04

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

#46
20170082357
2017-03-23

Heating component to reduce solidification in a cryogenic distillation system

#47
20170016668
2017-01-19

Increasing efficiency in an LNG production system by pre-cooling a natural gas feed stream

#48
20170016667
2017-01-19

Liquefied natural gas production system and method with greenhouse gas removal

#49
20160370109
2016-12-22

Method for producing a flow rich in methane and a flow rich in C2hydrocarbons, and associated installation

#50
20160327334
2016-11-10

SYSTEM AND METHOD FOR LIQUEFACTION OF NATURAL GAS

#51
20160313056
2016-10-27

SYSTEM AND METHOD FOR LIQUEFACTION OF NATURAL GAS

#52
20160258675
2016-09-08

SPLIT FEED ADDITION TO ISO-PRESSURE OPEN REFRIGERATION LPG RECOVERY

#53
20160231052
2016-08-11

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

#54
20160153710
2016-06-02

Cryogenic separation of synthesis gas

#55
20160138864
2016-05-19

Liquid collection system

#56
20160116210
2016-04-28

Method and system of controlling a temperature within a melt tray assembly of a distillation tower

#57
20150362251
2015-12-17

Method for separating a feed gas in a column

#58
20150308738
2015-10-29

Integrated nitrogen removal in the production of liquefied natural gas using refrigerated heat pump

#59
20150308736
2015-10-29

Integrated nitrogen removal in the production of liquefied natural gas using dedicated reinjection circuit

#60
20150253074
2015-09-10

Hydrocarbon gas processing

#61
20150184932
2015-07-02

Process for recovering hydrocarbons from crude carbon dioxide fluid

#62
20150114035
2015-04-30

Process and apparatus for the separation by cryogenic distillation of a mixture of methane, carbon dioxide and hydrogen

#63
20150114033
2015-04-30

Purification of carbon dioxide

#64
20150114032
2015-04-30

Purification of carbon dioxide

#65
20150013380
2015-01-15

Method for separating off acid gases from natural gas

#66
20140290307
2014-10-02

Method for producing a methane-rich stream and a C hydrocarbon-rich stream, and associated equipment

#67
20140260420
2014-09-18

Flexible NGL recovery methods and configurations

#68
20140238076
2014-08-28

Nitrogen rejection unit

#69
20140238075
2014-08-28

Method for producing a flow which is rich in methane and a cut which is rich in Chydrocarbons from a flow of feed natural gas and an associated installation

#70
20140182331
2014-07-03

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

#71
20140060113
2014-03-06

Method for separating C2+-hydrocarbons or C3+-hydrocarbons from a hydrocarbon-rich fraction

#72
20140007616
2014-01-09

Ethane recovery and ethane rejection methods and configurations

#73
20130255311
2013-10-03

Simplified method for producing a methane-rich stream and a C hydrocarbon-rich fraction from a feed natural-gas stream, and associated facility

#74
20130219957
2013-08-29

ISO-pressure open refrigeration NGL recovery

#75
20130219956
2013-08-29

He-3 recovery from natural helium by distillation

#76
20130098105
2013-04-25

Cryogenic systems for removing acid gases from a hydrocarbon gas stream using co-current separation devices

#77
20130014390
2013-01-17

Configurations and methods for retrofitting an NGL recovery plant

#78
20120304690
2012-12-06

ISO-pressure open refrigeration NGL recovery

#79
20120285196
2012-11-15

PROCESS AND APPARATUS FOR SEPARATION OF NITROGEN FROM LNG

#80
20120204599
2012-08-16

CRYOGENIC SYSTEM FOR REMOVING ACID GASES FROM A HYDROCARBON GAS STREAM, WITH REMOVAL OF HYDROGEN SULFIDE

#81
20120118007
2012-05-17

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

#82
20120079852
2012-04-05

Systems and Methods for Removing Heavy Hydrocarbons and Acid Gases From a Hydrocarbon Gas Stream

#83
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

#84
20120067081
2012-03-22

Process And Plant For Recovering Argon In A Separation Unit For A Purge Gas Used In The Synthesis Of Ammonia

#85
20120031144
2012-02-09

Cryogenic system for removing acid gases from a hydrocarbon gas stream, and method of removing acid gases

#86
20120000245
2012-01-05

Methods and Systems for Recovering Liquified Petroleum Gas from Natural Gas

#87
20110271713
2011-11-10

Purification of carbon dioxide

#88
20110257276
2011-10-20

Process and apparatus for the production of hydrocarbon compounds from methane

#89
20110226012
2011-09-22

Hydrocarbon gas processing

#90
20110226009
2011-09-22

Process for producing liquid and gaseous nitrogen streams, a gaseous stream which is rich in helium and a denitrided stream of hydrocarbons and associated installation

#91
20110209499
2011-09-01

METHOD FOR REMOVING NITROGEN

#92
20110209498
2011-09-01

PROCESS FOR SEPARATING OFF NITROGEN

#93
20110174017
2011-07-21

Helium Recovery From Natural Gas Integrated With NGL Recovery

#94
20110067443
2011-03-24

Hydrocarbon Gas Processing

#95
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

#96
20110067441
2011-03-24

Hydrocarbon Gas Processing

#97
20110023539
2011-02-03

Purification of carbon dioxide

#98
20110011127
2011-01-20

Process for controlling liquefied natural gas heating value

#99
20110005273
2011-01-13

Method for producing a flow rich in methane and a flow rich in C hydrocarbons, and associated installation

#100
20100287982
2010-11-18

Liquefied Natural Gas and Hydrocarbon Gas Processing

#101
20100263407
2010-10-21

Method for producing a flow which is rich in methane and a cut which is rich in C2+ hydrocarbons from a flow of feed natural gas and an associated installation

#102
20100251765
2010-10-07

Cryogenic Separation of Synthesis Gas

#103
20100223952
2010-09-09

Separation of carbon monoxide from gaseous mixtures containing carbon monoxide

#104
20100206003
2010-08-19

Configurations and methods for improved natural gas liquids recovery

#105
20100108487
2010-05-06

Dividing wall column with a heat pump

#106
20100107686
2010-05-06

METHOD AND APPARATUS FOR SEPARATING ONE OR MORE C2+ HYDROCARBONS FROM A MIXED PHASE HYDROCARBON STREAM

#107
20100055021
2010-03-04

Method and system for producing carbon monoxide by cryogenic distillation

#108
20100043488
2010-02-25

NGL recovery methods and configurations

#109
20100011810
2010-01-21

NGL Recovery Methods and Configurations

#110
20090293538
2009-12-03

NATURAL GAS LIQUEFACTION

#111
20090293537
2009-12-03

NGL Extraction From Natural Gas

#112
20090282865
2009-11-19

Liquefied Natural Gas and Hydrocarbon Gas Processing

#113
20090282864
2009-11-19

ISO-pressure open refrigeration NGL recovery

#114
20090277217
2009-11-12

Enhanced nitrogen removal in an LNG facility

#115
20090193846
2009-08-06

Recovery of Carbon Monoxide and Hydrogen From Hydrocarbon Streams

#116
20090126401
2009-05-21

Dual-refluxed heavies removal column in an LNG facility

#117
20090113931
2009-05-07

Multiple reflux stream hydrocarbon recovery process

#118
20090113930
2009-05-07

Multiple reflux stream hydrocarbon recovery process

#119
20090107175
2009-04-30

Multiple reflux stream hydrocarbon recovery process

#120
20090013868
2009-01-15

PROCESS AND APPARATUS FOR THE SEPARATION OF A GASEOUS MIXTURE

#121
20090013717
2009-01-15

Process and apparatus for the separation of a gaseous mixture

#122
20080302650
2008-12-11

Process to recover low grade heat from a fractionation system

#123
20080202161
2008-08-28

METHOD FOR ADJUSTING HEATING VALUE OF LNG

#124
20080196587
2008-08-21

COseparation apparatus and process for oxy-combustion coal power plants

#125
20080196585
2008-08-21

Process for vaporizing the product COat two different pressures during COseparation

#126
20080196584
2008-08-21

Process for feed gas cooling in reboiler during COseparation

#127
20080196583
2008-08-21

PROCESS FOR RECYCLING OF TOP GAS DURING CO2 SEPARTION

#128
20080190136
2008-08-14

Hydrocarbon gas processing

#129
20080176174
2008-07-24

Purification of carbon dioxide

#130
20080173585
2008-07-24

Purification of carbon dioxide

#131
20080173584
2008-07-24

Purification of carbon dioxide

#132
20080141712
2008-06-19

Integrated olefin recovery process

#133
20080098770
2008-05-01

INTERMEDIATE PRESSURE LNG REFLUXED NGL RECOVERY PROCESS

#134
20080083246
2008-04-10

Gas conditioning method and apparatus for the recovery of LPG/NGL(C2+) from LNG

#135
20080066493
2008-03-20

Treating Liquefied Natural Gas

#136
20080066492
2008-03-20

Treating Liquefied Natural Gas

#137
20080034789
2008-02-14

Integrated Acid Gas And Sour Gas Reinjection Process

#138
20080029381
2008-02-07

Distillation Installation Comprising Columns With Corrugated-Crossed Structured Packings And Method Of Increasing The Capacity Of A Distillation Installation

#139
20080028790
2008-02-07

Natural gas liquefaction

#140
20080022716
2008-01-31

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

#141
20080000265
2008-01-03

Liquefied natural gas processing

#142
20070245770
2007-10-25

Optimization of a dual refrigeration system natural gas liquid plant via empirical experimental method

#143
20070227186
2007-10-04

Systems and methods for low-temperature gas separation

#144
20070204651
2007-09-06

Natural gas liquid recovery

#145
20070056319
2007-03-15

Process and installation for providing a fluid mixture containing at least 10% carbon monoxide

#146
20070012071
2007-01-18

LNG facility providing enhanced liquid recovery and product flexibility

#147
20060283207
2006-12-21

Hydrocarbon gas processing

#148
20060254311
2006-11-16

Process and installation for supplying gaseous carbon monoxide and/or a gaseous mixture containing at least 10% carbon monoxide

#149
20060131218
2006-06-22

Method for recovery of natural gas liquids for liquefied natural gas

#150
20060130521
2006-06-22

Method for recovery of natural gas liquids for liquefied natural gas

#151
20060130520
2006-06-22

Method for recovery of natural gas liquids for liquefied natural gas

#152
20060086139
2006-04-27

LNG system employing optimized heat exchangers to provide liquid reflux stream

#153
20060074132
2006-04-06

Process and apparatus for the production of hydrocarbon compounds from methane

#154
20060000234
2006-01-05

Liquefied natural gas processing

#155
20050268649
2005-12-08

Natural gas liquefaction

#156
20050268648
2005-12-08

Enhanced operation of LNG facility equipped with refluxed heavies removal column

#157
20050229634
2005-10-20

Hydrocarbon gas processing for rich gas streams

#158
20050204774
2005-09-22

Hydrocarbon recovery process utilizing enhanced reflux streams

#159
20050092594
2005-05-05

Membrane/distillation method and system for extracting CO2 from hydrocarbon gas

#160
20050086976
2005-04-28

Enhanced operation of LNG facility equipped with refluxed heavies removal column

#161
20050066686
2005-03-31

Liquefied natural gas processing

#162
20050061029
2005-03-24

Process and apparatus for LNG enriching in methane