ClassID:

160431

F25J2220/62 - CPC Classification

Classification description:

Processes or apparatus involving steps for the removal of impurities; Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons Separating low boiling components, e.g. He, H, N, Air

Recent Application in this class:
#1
20260055958
2026-02-26

NITROGEN SEPARATION COLUMN SYSTEMS

#2
20260055957
2026-02-26

METHODS FOR SEPARATING NITROGEN

#3
20250101329
2025-03-27

Methane Purification System and Method

#4
20240410647
2024-12-12

Dehydration Separation Unit with Mixed Refrigerant Cooling

#5
20240401877
2024-12-05

Nitrogen Rejection Unit System and Method for Low Nitrogen Concentration Feeds

#6
20240384927
2024-11-21

SYSTEM AND METHOD FOR RELIQUEFACTION OF BOIL-OFF GAS OF SHIP AND SYSTEM AND METHOD FOR TREATING OFFGAS OF RELIQUEFACTION APPARATUS

#7
20240093936
2024-03-21

REFRIGERANT SUPPLY TO A COOLING FACILITY

#8
20240053095
2024-02-15

COMBINED CYCLE NATURAL GAS PROCESSING SYSTEM

#9
20230408191
2023-12-21

METHOD FOR EXTRACTING ETHANE FROM AN INITIAL NATURAL GAS STREAM AND CORRESPONDING PLANT

#10
20230408187
2023-12-21

METHOD FOR PRODUCING LIQUEFIED NATURAL GAS FROM NATURAL GAS, AND CORRESPONDING PLANT

#11
20230384027
2023-11-30

PROCESS FOR CRYOGENIC SEPARATION OF A FEED STREAM CONTAINING METHANE AND AIR GASES, FACILITY FOR PRODUCING BIOMETHANE BY PURIFICATION OF BIOGASES DERIVED FROM NON-HAZARDOUS WASTE STORAGE FACILITIES (NHWSF) IMPLEMENTING THE PROCESS

#12
20230375261
2023-11-23

CLOSED LOOP LNG PROCESS FOR A FEED GAS WITH NITROGEN

#13
20230115492
2023-04-13

SYSTEM AND METHOD TO PRODUCE LIQUEFIED NATURAL GAS

#14
20230083389
2023-03-16

METHOD AND SYSTEM FOR PRODUCTION OPTIMIZATION

#15
20230021328
2023-01-26

HYDROCARBON GAS PROCESSING

#16
20220412649
2022-12-29

METHOD FOR THE SEPARATION AND LIQUEFACTION OF METHANE AND CARBON DIOXIDE WITH REMOVAL OF THE AIR IMPURITIES PRESENT IN THE METHANE

#17
20220252342
2022-08-11

System and method for the processing of LNG

#18
20220228802
2022-07-21

Dehydrogenation separation unit with mixed refrigerant cooling

#19
20220074652
2022-03-10

Natural gas liquefaction by a high pressure expansion process

#20
20210172677
2021-06-10

CRYOGENIC PROCESS FOR REMOVING NITROGEN FROM A DISCHARGE GAS

#21
20210148632
2021-05-20

Dehydrogenation separation unit with mixed refrigerant cooling

#22
20210131729
2021-05-06

Hydrocarbon gas processing

#23
20210086099
2021-03-25

Pretreatment and pre-cooling of natural gas by high pressure compression and expansion

#24
20200386475
2020-12-10

Method to recover LPG and condensates from refineries fuel gas streams

#25
20200318896
2020-10-08

Process for cryogenic separation of a feed stream containing methane and air gases, facility for producing biomethane by purification of biogases derived from non-hazardous waste storage facilities (NHWSF) implementing the process

#26
20200232704
2020-07-23

Systems and methods for using multiple cryogenic hydraulic turbines

#27
20200200471
2020-06-25

Multi-product liquefaction method and system

#28
20200088466
2020-03-19

Helium extraction from natural gas

#29
20200033054
2020-01-30

ADDITIONAL LIQUID NATURAL GAS PLANT AND METHOD OF OPERATING THEREOF

#30
20200018546
2020-01-16

Method for separating components of a gas

#31
20190376741
2019-12-12

LNG PROCESS FOR VARIABLE PIPELINE GAS COMPOSITION

#32
20190310013
2019-10-10

Method for liquefying natural gas and for recovering possible liquids from the natural gas, comprising two refrigerant cycles semi-open to the natural gas and a refrigerant cycle closed to the refrigerant gas

#33
20190285340
2019-09-19

Method and system for liquefaction of natural gas using liquid nitrogen

#34
20190120548
2019-04-25

Natural Gas Liquefaction by a High Pressure Expansion Process using Multiple Turboexpander Compressors

#35
20190101329
2019-04-04

System for treating a gas deriving from the evaporation of a cryogenic liquid and supplying pressurized gas to a gas engine

#36
20190093947
2019-03-28

Multiple pressure mixed refrigerant cooling system

#37
20190093946
2019-03-28

Multiple pressure mixed refrigerant cooling process

#38
20190078840
2019-03-14

Multi-product liquefaction method and system

#39
20180363978
2018-12-20

TREATING RAW NATURAL GAS

#40
20180356151
2018-12-13

Methods and systems for enhancing production of liquefied natural gas

#41
20180209724
2018-07-26

Continuous mixed refrigerant optimization system for the production of liquefied natural gas (LNG)

#42
20180202713
2018-07-19

Method and system for cooling and separating a hydrocarbon stream

#43
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

#44
20180194447
2018-07-12

Ship comprising engine

#45
20180172344
2018-06-21

Liquefaction of Natural Gas

#46
20180149424
2018-05-31

Liquefied Natural Gas Production

#47
20180058776
2018-03-01

MAIN HEAT EXCHANGER AND A PROCESS FOR COOLING A TUBE SIDE STREAM

#48
20170336138
2017-11-23

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

#49
20170307290
2017-10-26

LIQUEFACTION PROCESS FOR PRODUCING SUBCOOLED LNG

#50
20170122659
2017-05-04

PROCESS AND APPARATUS FOR SWEETENING AND LIQUEFYING A GAS STREAM

#51
20170051968
2017-02-23

Integrated pre-cooled mixed refrigerant system and method

#52
20170023293
2017-01-26

Configurations and methods for nitrogen rejection, LNG and NGL production from high nitrogen feed gases

#53
20170003072
2017-01-05

Systems and methods for using multiple cryogenic hydraulic turbines

#54
20160341471
2016-11-24

Integrated pre-cooled mixed refrigerant system and method

#55
20160327335
2016-11-10

Mixing column for single mixed refrigerant (SMR) process

#56
20160313057
2016-10-27

Integrated methane refrigeration system for liquefying natural gas

#57
20160282041
2016-09-29

Liquefaction process for producing subcooled LNG

#58
20160084060
2016-03-24

APPARATUS FOR THE RECOVERY OF HYDROCARBONACEOUS AND ADDITIONAL PRODUCTS FROM OIL SHALE AND SANDS VIA MULTI-STAGE CONDENSATION

#59
20160054054
2016-02-25

PROCESS AND APPARATUS FOR SEPARATION OF HYDROCARBONS AND NITROGEN

#60
20160047597
2016-02-18

Method and apparatus in a cryogenic liquefaction process

#61
20160040928
2016-02-11

Flexible liquefied natural gas plant

#62
20150345858
2015-12-03

Method to produce LNG at gas pressure letdown stations in natural gas transmission pipeline systems

#63
20150300733
2015-10-22

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

#64
20150300732
2015-10-22

System and process for liquefying natural gas

#65
20150253070
2015-09-10

Refrigerant supply to a cooling facility

#66
20150143843
2015-05-28

Integration of a small scale liquefaction unit with an LNG plant to convert end flash gas and boil-off gas to incremental LNG

#67
20140260416
2014-09-18

Liquefaction systems and associated processes and methods

#68
20140245780
2014-09-04

Multi nitrogen expansion process for LNG production

#69
20140182331
2014-07-03

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

#70
20140130541
2014-05-15

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

#71
20140075943
2014-03-20

Method for operating fuel supply system for marine structure having reliquefaction apparatus and high-pressure natural gas injection engine

#72
20130333415
2013-12-19

Liquefaction process producing subcooled LNG

#73
20130180282
2013-07-18

Simplified LNG process

#74
20130111947
2013-05-09

Rebalancing a main heat exchanger in a process for liquefying a tube side stream

#75
20130068431
2013-03-21

Main heat exchanger and a process for cooling a tube side stream

#76
20130061633
2013-03-14

CONFIGURATIONS AND METHODS OF INTEGRATED NGL RECOVERY AND LNG LIQUEFACTION

#77
20130042645
2013-02-21

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

#78
20130036763
2013-02-14

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

#79
20130000349
2013-01-03

APPARATUS AND METHODS FOR THE RECOVERY OF HYDROCARBONACEOUS AND ADDITIONAL PRODUCTS FROM OIL SHALE AND SANDS VIA MULTI-STAGE CONDENSATION

#80
20120289407
2012-11-15

Superconducting system for enhanced natural gas production

#81
20120240600
2012-09-27

METHOD OF HANDLING A BOIL OFF GAS STREAM AND AN APPARATUS THEREFOR

#82
20120186296
2012-07-26

PROCESS AND APPARATUS FOR SWEETENING AND LIQUEFYING A GAS STREAM

#83
20120103011
2012-05-03

METHOD AND APPARATUS FOR PRODUCING A COOLED HYDROCARBON STREAM

#84
20120103010
2012-05-03

System and method for producing LNG from contaminated gas streams

#85
20120079849
2012-04-05

REMOVAL OF HYDROGEN

#86
20120067079
2012-03-22

NITROGEN REJECTION AND LIQUIFIER SYSTEM FOR LIQUIFIED NATURAL GAS PRODUCTION

#87
20120060552
2012-03-15

METHOD AND APPARATUS FOR COOLING A GASEOUS HYDROCARBON STREAM

#88
20120047943
2012-03-01

Process for natural gas liquefaction

#89
20120017639
2012-01-26

METHODS AND SYSTEMS FOR STORING AND TRANSPORTING GASES

#90
20110289963
2011-12-01

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

#91
20110226008
2011-09-22

Integrated pre-cooled mixed refrigerant system and method

#92
20110146341
2011-06-23

GAS SUPPLY SYSTEM FOR GAS ENGINES

#93
20110126451
2011-06-02

INTEGRATED PROCESS FOR CONVERTING NATURAL GAS FROM AN OFFSHORE FIELD SITE TO LIQUEFIED NATURAL GAS AND LIQUID FUEL

#94
20110113825
2011-05-19

DUAL NITROGEN EXPANSION PROCESS

#95
20110094262
2011-04-28

Complete liquefaction methods and apparatus

#96
20110067440
2011-03-24

Method of cooling and liquefying a hydrocarbon stream, an apparatus therefor, and a floating structure, caisson or off-shore platform comprising such an apparatus

#97
20110067439
2011-03-24

METHOD AND SYSTEM FOR PRODUCTION OF LIQUID NATURAL GAS

#98
20110056237
2011-03-10

Method and apparatus for liquefying a hydrocarbon stream

#99
20110036121
2011-02-17

Refrigerant composition control

#100
20110023536
2011-02-03

Method and apparatus for cooling a hydrocarbon stream

#101
20100319396
2010-12-23

METHOD AND APPARATUS FOR LIQUEFYING HYDROCARBON STREAMS

#102
20100313597
2010-12-16

Method and system for production of liquid natural gas

#103
20100307193
2010-12-09

METHOD AND APPARATUS FOR COOLING AND SEPARATING A HYDROCARBON STREAM

#104
20100293996
2010-11-25

METHOD AND APPARATUS FOR LIQUEFYING A HYDROCARBON STREAM AND FLOATING VESSEL OR OFFSHORE PLATFORM COMPRISING THE SAME

#105
20100263532
2010-10-21

Dry natural gas liquefaction method

#106
20100258476
2010-10-14

Apparatus for the recovery of hydrocarbonaceous and additional products from oil shale and sands via multi-stage condensation

#107
20100256245
2010-10-07

Process for methane conversion

#108
20100223951
2010-09-09

METHOD AND APPARATUS FOR COOLING A HYDROCARBON STREAM

#109
20100223950
2010-09-09

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

#110
20100212329
2010-08-26

BOIL-OFF GAS TREATMENT PROCESS AND SYSTEM

#111
20100186446
2010-07-29

APPARATUS FOR THE LIQUEFACTION OF A GAS AND METHODS RELATING TO SAME

#112
20100186445
2010-07-29

Natural gas liquefaction processes with feed gas refrigerant cooling loops

#113
20100175425
2010-07-15

METHODS AND APPARATUS FOR LIQUEFACTION OF NATURAL GAS AND PRODUCTS THEREFROM

#114
20100175424
2010-07-15

METHODS AND APPARATUS FOR LIQUEFACTION OF NATURAL GAS AND PRODUCTS THEREFROM

#115
20100175423
2010-07-15

METHODS AND APPARATUS FOR LIQUEFACTION OF NATURAL GAS AND PRODUCTS THEREFROM

#116
20100139317
2010-06-10

METHOD OF COOLING A HYDROCARBON STREAM AND AN APPARATUS THEREFOR

#117
20100139316
2010-06-10

Operating system of liquefied natural gas ship for subcooling and liquefying boil-off gas

#118
20100126186
2010-05-27

METHOD AND APPARATUS FOR GENERATING A GASEOUS HYDROCARBON STREAM FROM A LIQUEFIED HYDROCARBON STREAM

#119
20100122551
2010-05-20

Liquefaction method and system

#120
20100107684
2010-05-06

Natural gas liquefaction process

#121
20100071409
2010-03-25

METHOD AND APPARATUS FOR LIQUEFYING A HYDROCARBON STREAM

#122
20100058803
2010-03-11

System for incondensable component separation in a liquefied natural gas facility

#123
20100031699
2010-02-11

Method and apparatus for liquefying a hydrocarbon stream

#124
20100011808
2010-01-21

METHOD AND APPARATUS FOR LIQUEFYING A HYDROCARBON STREAM

#125
20100011663
2010-01-21

Method for liquefaction of natural gas

#126
20100000253
2010-01-07

METHOD AND APPARATUS FOR THE RELIQUEFACTION OF A VAPOUR

#127
20090301131
2009-12-10

METHOD AND APPARATUS FOR TREATING A HYDROCARBON STREAM

#128
20090282862
2009-11-19

METHOD AND APPARATUS FOR PRODUCING A COOLED HYDROCARBON STREAM

#129
20090277217
2009-11-12

Enhanced nitrogen removal in an LNG facility

#130
20090255294
2009-10-15

Method and apparatus for liquefying a hydrocarbon stream

#131
20090217701
2009-09-03

Natural Gas Liquefaction Process for Ling

#132
20090211297
2009-08-27

HELIUM PRODUCTION IN LNG PLANTS

#133
20090151390
2009-06-18

System for enhanced fuel gas composition control in an LNG facility

#134
20090120127
2009-05-14

METHOD FOR PRODUCING LIQUEFIED NATURAL GAS

#135
20090113929
2009-05-07

METHOD AND APPARATUS FOR PRE-HEATING LNG BOIL-OFF GAS TO AMBIENT TEMPERATURE PRIOR TO COMPRESSION IN A RELIQUEFACTION SYSTEM

#136
20090100844
2009-04-23

Apparatus and method for controlling temperature in a boil-off gas

#137
20090095019
2009-04-16

Method and apparatus for liquefying a hydrocarbon stream

#138
20090095018
2009-04-16

METHOD FOR LIQUEFYING A HYDROCARBON STREAM

#139
20090084132
2009-04-02

METHOD FOR PRODUCING LIQUEFIED NATURAL GAS

#140
20090064713
2009-03-12

Method and Apparatus for Liquefying a Natural Gas Stream

#141
20090064712
2009-03-12

Method and Apparatus for Liquefying a Natural Gas Stream

#142
20090031754
2009-02-05

METHOD AND APPARATUS TO IMPROVE OVERALL EFFICIENCY OF LNG LIQUEFACTION SYSTEMS

#143
20080307826
2008-12-18

Apparatus and method for optimizing a natural gas liquefaction train having a nitrogen cooling loop

#144
20080163645
2008-07-10

NATURAL GAS PROCESSING METHOD

#145
20080156037
2008-07-03

Plant and Method for Liquefying Natural Gas

#146
20080156036
2008-07-03

Plant and Method for Liquefying Natural Gas

#147
20080148770
2008-06-26

Process to obtain liquefied natural gas

#148
20080120993
2008-05-29

Operating system of liquefied natural gas ship for sub-cooling and liquefying boil-off gas

#149
20070251266
2007-11-01

Cryogenic liquefying/refrigerating method and system

#150
20070234755
2007-10-11

Natural gas liquefaction system

#151
20070193303
2007-08-23

Scalable capacity liquefied natural gas plant

#152
20070186564
2007-08-16

Apparatus for cryogenic fluids having floating liquefaction unit and floating regasification unit connected by shuttle vessel, and cryogenic fluid methods

#153
20070157663
2007-07-12

Configurations and methods of integrated NGL recovery and LNG liquefaction

#154
20070157662
2007-07-12

Method and apparatus for producing products from natural gas including helium and liquefied natural gas

#155
20070149838
2007-06-28

Method for adjusting the high heating value of gas in the LNG chain

#156
20070137246
2007-06-21

SYSTEMS AND METHODS FOR DELIVERING HYDROGEN AND SEPARATION OF HYDROGEN FROM A CARRIER MEDIUM

#157
20070107465
2007-05-17

APPARATUS FOR THE LIQUEFACTION OF GAS AND METHODS RELATING TO SAME

#158
20070017250
2007-01-25

Apparatus for the liquefaction of a gas and methods relating to same

#159
20060218939
2006-10-05

Apparatus for the liquefaction of natural gas and methods relating to same

#160
20060213223
2006-09-28

Apparatus for the liquefaction of natural gas and methods relating to same

#161
20060213222
2006-09-28

Compact, modular method and apparatus for liquefying natural gas

#162
20060156758
2006-07-20

Operating system of liquefied natural gas ship for sub-cooling and liquefying boil-off gas

#163
20060090508
2006-05-04

Natural gas liquefaction system

#164
20060042312
2006-03-02

Process for extracting ethane and heavier hydrocarbons from LNG

#165
20060021378
2006-02-02

Method of liquefying a hydrocarbon-rich flow

#166
20060010911
2006-01-19

Apparatus for cryogenic fluids having floating liquefaction unit and floating regasification unit connected by shuttle vessel, and cryogenic fluid methods

#167
20060010910
2006-01-19

Apparatus for cryogenic fluids having floating liquefaction unit and floating regasification unit connected by shuttle vessel, and cryogenic fluid methods

#168
20050284176
2005-12-29

LNG system employing refluxed heavies removal column with overhead condensing

#169
20050217314
2005-10-06

Apparatus and methods for processing hydrocarbons to produce liquified natural gas

#170
20050183452
2005-08-25

LNG system with warm nitrogen rejection

#171
20050113468
2005-05-26

Natural gas liquefaction and conversion method

#172
20050056051
2005-03-17

Hybrid gas liquefaction cycle with multiple expanders

#173
20050020434
2005-01-27

Process for liquefying natural gas and producing hydrocarbons