ClassID:

160059

F25J1/021 - CPC Classification

Classification description:

Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using a single-component refrigerant [SCR] fluid in a closed vapor compression cycle in combination with an internal quasi-closed refrigeration loop, e.g. with deep flash recycle loop as at least a three level refrigeration cascade using a deep flash recycle loop

Recent Application in this class:
#1
20260092734
2026-04-02

Method of Hydrogen Liquefaction Using Optimized Claude Refrigeration Cycles

#2
20240318908
2024-09-26

HYDROGEN LIQUEFACTION SYSTEM AND HYDROGEN LIQUEFACTION METHOD

#3
20240093936
2024-03-21

REFRIGERANT SUPPLY TO A COOLING FACILITY

#4
20230304731
2023-09-28

FACILITY AND METHOD FOR REFRIGERATING A FLUID

#5
20220364787
2022-11-17

HEAT EXCHANGER FOR A LIQUEFIED NATURAL GAS FACILITY

#6
20220268517
2022-08-25

Systems and Methods for Improving the Efficiency of Open-Cycle Cascade-Based Liquified Natural Gas Systems

#7
20190316856
2019-10-17

Liquid drains in core-in-shell heat exchanger

#8
20190063824
2019-02-28

Production equipment and production method of liquefied hydrogen and liquefied natural gas

#9
20180347901
2018-12-06

Method of liquefying a CO2 contaminated hydrocarbon-containing gas stream

#10
20180231303
2018-08-16

Pre-Cooling of Natural Gas by High Pressure Compression and Expansion

#11
20180209427
2018-07-26

LNG PLANT INCLUDING AN AXIAL COMPRESSOR AND A CENTRIFUGAL COMPRESSOR

#12
20180172344
2018-06-21

Liquefaction of Natural Gas

#13
20170336138
2017-11-23

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

#14
20170160008
2017-06-08

SYSTEM AND METHOD FOR LIQUEFACTION OF NATURAL GAS

#15
20160377340
2016-12-29

Liquefaction system using a turboexpander

#16
20160327334
2016-11-10

SYSTEM AND METHOD FOR LIQUEFACTION OF NATURAL GAS

#17
20160313057
2016-10-27

Integrated methane refrigeration system for liquefying natural gas

#18
20160313056
2016-10-27

SYSTEM AND METHOD FOR LIQUEFACTION OF NATURAL GAS

#19
20160298899
2016-10-13

Quench system for a refrigeration cycle of a liquefied natural gas facility and method of quenching

#20
20150316333
2015-11-05

Liquid drains in core-in-shell heat exchanger

#21
20150300732
2015-10-22

System and process for liquefying natural gas

#22
20150253071
2015-09-10

Heat exchanger for a liquefied natural gas facility

#23
20150253070
2015-09-10

Refrigerant supply to a cooling facility

#24
20140366561
2014-12-18

Integrated cascade process for vaporization and recovery of residual LNG in a floating tank application

#25
20140238076
2014-08-28

Nitrogen rejection unit

#26
20140182331
2014-07-03

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

#27
20130327085
2013-12-12

Semi-closed loop LNG process

#28
20130199238
2013-08-08

Liquefied natural gas plant with ethylene independent heavies recovery system

#29
20120204598
2012-08-16

INTEGRATED WASTE HEAT RECOVERY IN LIQUEFIED NATURAL GAS FACILITY

#30
20120123578
2012-05-17

MARKET OPTIMIZATION OF LIQUEFIED NATURAL GAS PROCESS

#31
20120118007
2012-05-17

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

#32
20120047943
2012-03-01

Process for natural gas liquefaction

#33
20120042690
2012-02-23

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

#34
20110239699
2011-10-06

Turbocompressor train and method for operation thereof and natural gas liquefaction plant having the turbocompressor train

#35
20110056237
2011-03-10

Method and apparatus for liquefying a hydrocarbon stream

#36
20110011127
2011-01-20

Process for controlling liquefied natural gas heating value

#37
20100293967
2010-11-25

COMPRESSOR SYSTEM AND METHOD FOR GAS LIQUEFACTION SYSTEM

#38
20100281915
2010-11-11

Pre-Cooled Liquefaction Process

#39
20100218551
2010-09-02

Method for utilization of lean boil-off gas stream as a refrigerant source

#40
20100058803
2010-03-11

System for incondensable component separation in a liquefied natural gas facility

#41
20100058801
2010-03-11

System for enhanced gas turbine performance in a liquefied natural gas facility

#42
20090301132
2009-12-10

Optimized heavies removal system in an LNG facility

#43
20090277217
2009-11-12

Enhanced nitrogen removal in an LNG facility

#44
20090255294
2009-10-15

Method and apparatus for liquefying a hydrocarbon stream

#45
20090249828
2009-10-08

LNG SYSTEM WITH ENHANCED PRE-COOLING CYCLE

#46
20090151391
2009-06-18

LNG FACILITY EMPLOYING A HEAVIES ENRICHING STREAM

#47
20090151390
2009-06-18

System for enhanced fuel gas composition control in an LNG facility

#48
20090126401
2009-05-21

Dual-refluxed heavies removal column in an LNG facility

#49
20080264099
2008-10-30

DOMESTIC GAS PRODUCT FROM AN LNG FACILITY

#50
20080256976
2008-10-23

SEMI-CLOSED LOOP LNG PROCESS

#51
20080245101
2008-10-09

Integrated Method and Installation for Cryogenic Adsorption and Separation for Producing Co2

#52
20080202159
2008-08-28

Apparatus and method for optimizing a liquefied natural gas facility

#53
20080163645
2008-07-10

NATURAL GAS PROCESSING METHOD

#54
20080115530
2008-05-22

Contaminant removal system for closed-loop refrigeration cycles of an LNG facility

#55
20080115529
2008-05-22

LIQUEFIED NATURAL GAS PLANT WITH ENHANCED OPERATING FLEXIBILITY

#56
20080098770
2008-05-01

INTERMEDIATE PRESSURE LNG REFLUXED NGL RECOVERY PROCESS

#57
20080022716
2008-01-31

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

#58
20080016908
2008-01-24

LNG system with enhanced refrigeration efficiency

#59
20070283718
2007-12-13

LNG SYSTEM WITH OPTIMIZED HEAT EXCHANGER CONFIGURATION

#60
20070113584
2007-05-24

Optimized LNG system with liquid expander

#61
20070107464
2007-05-17

LNG system with high pressure pre-cooling cycle

#62
20070056318
2007-03-15

Enhanced heavies removal/LPG recovery process for LNG facilities

#63
20070012072
2007-01-18

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

#64
20070012071
2007-01-18

LNG facility providing enhanced liquid recovery and product flexibility

#65
20060248921
2006-11-09

Landfill gas purification and liquefaction process

#66
20060137391
2006-06-29

Enhanced methane flash system for natural gas liquefaction

#67
20060086140
2006-04-27

Vertical heat exchanger configuration for LNG facility

#68
20060086139
2006-04-27

LNG system employing optimized heat exchangers to provide liquid reflux stream

#69
20050284176
2005-12-29

LNG system employing refluxed heavies removal column with overhead condensing

#70
20050279133
2005-12-22

Semi-closed loop LNG process

#71
20050279132
2005-12-22

LNG system with enhanced turboexpander configuration

#72
20050279131
2005-12-22

Noninvasive measurement and control system for use in hydrocarbon processing

#73
20050268648
2005-12-08

Enhanced operation of LNG facility equipped with refluxed heavies removal column

#74
20050183452
2005-08-25

LNG system with warm nitrogen rejection

#75
20050086976
2005-04-28

Enhanced operation of LNG facility equipped with refluxed heavies removal column