ClassID:

160154

F25J3/0295 - CPC Classification

Classification description:

Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream Start-up or control of the process; Details of the apparatus used, e.g. sieve plates, packings

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

SIDE DRAW REFLUX HEAVY HYDROCARBON REMOVAL SYSTEM AND METHOD

#2
20260063359
2026-03-05

LIQUEFACTION OF NATURAL GAS FEEDS CONTAINING HYDROGEN

#3
20260055958
2026-02-26

NITROGEN SEPARATION COLUMN SYSTEMS

#4
20260055957
2026-02-26

METHODS FOR SEPARATING NITROGEN

#5
20260049764
2026-02-19

Recovering Natural Gas Liquids

#6
20250327618
2025-10-23

ETHANE RECOVERY SYSTEM SUITABLE FOR RICH GAS WITH HIGH CARBON DIOXIDE CONTENT AND RECOVERY METHOD THEREFOR

#7
20250251189
2025-08-07

System and Method for Separating Nitrogen from Methane with Ultra-Low Greenhouse Gas Emissions

#8
20250075974
2025-03-06

SYSTEM AND METHOD FOR USE OF A TRAIN FEED GAS LOADING AUTOMATION OPTIMIZER

#9
20250067506
2025-02-27

TURBO-EXPANDER INTELLIGENT PERFORMANCE MONITORING SYSTEM

#10
20250003677
2025-01-02

Cryogenic Neon Purification System and Method

#11
20240401878
2024-12-05

ZERO FLARING DURING NGL RECOVERY PLANT DRYING OUT

#12
20240351874
2024-10-24

Systems and methods for production and separation of hydrogen and carbon dioxide

#13
20240310118
2024-09-19

SOLVENT INJECTION AND RECOVERY IN A LNG PLANT

#14
20240219115
2024-07-04

DYNAMIC RATE LIMITER FOR LOAD SHARING APPLICATION

#15
20240200869
2024-06-20

PROCESS AND APPARATUS FOR SEPARATING HYDROCARBON

#16
20240190791
2024-06-13

SEPARATION OF HYDROGEN, METHANE, ETHANE, AND PROPANE IN NAPHTHA TO ETHANE AND PROPANE FRACTIONATION SECTION BASED ON A DIVIDING WALL FRACTIONATION COLUMN INTEGRATION

#17
20230296313
2023-09-21

AI-enabled gas plant monitoring and optimization through computer vision

#18
20230251032
2023-08-10

Solvent injection and recovery in a LNG plant

#19
20230194162
2023-06-22

DYNAMIC LEAK DETECTION SYSTEM IN PROPANE HEAT EXCHANGERS

#20
20230194161
2023-06-22

STANDALONE HIGH-PRESSURE HEAVIES REMOVAL UNIT FOR LNG PROCESSING

#21
20230022033
2023-01-26

Process to separate nitrogen from methane by permeation and cryogenic distillation

#22
20220373257
2022-11-24

Pretreatment of natural gas prior to liquefaction

#23
20220333860
2022-10-20

Method for regenerating a pre-purification vessel

#24
20220325951
2022-10-13

Method for separating a mixture containing at least nitrogen and methane

#25
20220290920
2022-09-15

Method to detect tube leakage in shell and tube thermosiphon reboilers

#26
20220252343
2022-08-11

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

#27
20220243981
2022-08-04

METHOD FOR OPERATING A PROCESS PLANT

#28
20220243980
2022-08-04

METHOD FOR CONFIGURING A CONTROL SYSTEM FOR A PROCESS PLANT

#29
20220010225
2022-01-13

Method for treating a feed gas stream and associated installation

#30
20210396465
2021-12-23

MIXED REFRIGERANT SYSTEM FOR NATURAL GAS PROCESSING

#31
20210348842
2021-11-11

System and method for recovery of nitrogen, argon, and oxygen in moderate pressure cryogenic air separation unit

#32
20210323818
2021-10-21

Systems and methods for production and separation of hydrogen and carbon dioxide

#33
20210222947
2021-07-22

Process integration for natural gas liquid recovery

#34
20210156613
2021-05-27

METHODS AND SYSTEMS FOR REMOVING NITROGEN FROM NATURAL GAS

#35
20210131728
2021-05-06

PROCESS AND APPARATUS FOR SEPARATING HYDROCARBON

#36
20210116174
2021-04-22

HYDROCARBON GAS PROCESSING

#37
20210116173
2021-04-22

Standalone high-pressure heavies removal unit for LNG processing

#38
20210095921
2021-04-01

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

#39
20210088276
2021-03-25

Method for producing pure nitrogen from a natural gas stream containing nitrogen

#40
20210080176
2021-03-18

Unsaturated hydrocarbon production apparatus

#41
20200370823
2020-11-26

System and method for small scale LNG production

#42
20200340741
2020-10-29

Solvent injection and recovery in a LNG plant

#43
20200284507
2020-09-10

Methods for providing refrigeration in natural gas liquids recovery plants

#44
20200240588
2020-07-30

Process and method for transporting liquid hydrocarbon and COfor producing hydrogen with COcapture

#45
20200132228
2020-04-30

CONDUIT SEAL ASSEMBLY

#46
20200072547
2020-03-05

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

#47
20200064064
2020-02-27

System and Method for Natural Gas Liquid Production with Flexible Ethane Recovery or Rejection

#48
20190346203
2019-11-14

Modularized LNG separation device and flash gas heat exchanger

#49
20190301796
2019-10-03

METHOD FOR CONSTRUCTING OR ALTERING A MATTER- AND/OR HEAT-EXCHANGE DEVICE

#50
20190277564
2019-09-12

Pump reservoir, rectification system and process for low-temperature rectification

#51
20190193018
2019-06-27

Separation process and apparatus for light noble gas

#52
20190186831
2019-06-20

Process integration for natural gas liquid recovery

#53
20190186830
2019-06-20

Process integration for natural gas liquid recovery

#54
20190186828
2019-06-20

Process integration for natural gas liquid recovery

#55
20190186827
2019-06-20

Process integration for natural gas liquid recovery

#56
20190186826
2019-06-20

Process integration for natural gas liquid recovery

#57
20190186825
2019-06-20

Process integration for natural gas liquid recovery

#58
20190186824
2019-06-20

Process integration for natural gas liquid recovery

#59
20190186823
2019-06-20

Process integration for natural gas liquid recovery

#60
20190186822
2019-06-20

Process integration for natural gas liquid recovery

#61
20190186821
2019-06-20

Process integration for natural gas liquid recovery

#62
20190186820
2019-06-20

Process integration for natural gas liquid recovery

#63
20190186819
2019-06-20

Process integration for natural gas liquid recovery

#64
20190186818
2019-06-20

Process integration for natural gas liquid recovery

#65
20190162634
2019-05-30

Cryogenic liquid sampler

#66
20190154332
2019-05-23

METHOD FOR SEPARATING A SYNTHESIS GAS

#67
20190137174
2019-05-09

Element for construction of a mass- and/or heat-exchange device, assembly of two elements and exchange method using an assembly

#68
20190135626
2019-05-09

Systems and methods for production and separation of hydrogen and carbon dioxide

#69
20190049177
2019-02-14

Apparatus and method for separation of air by cryogenic distillation

#70
20190049176
2019-02-14

METHODS FOR PROVIDING REFRIGERATION IN NATURAL GAS LIQUIDS RECOVERY PLANTS

#71
20190049175
2019-02-14

Natural gas liquid fractionation plant waste heat conversion to simultaneous power and potable water using organic Rankine cycle and modified multi-effect-distillation systems

#72
20190041130
2019-02-07

Method and device for separating air by cryogenic distillation

#73
20190041129
2019-02-07

Device and method for separating air by cryogenic distillation

#74
20180347899
2018-12-06

Hydrocarbon gas processing

#75
20180347898
2018-12-06

Hydrocarbon gas processing

#76
20180320959
2018-11-08

Method and apparatus for separating a synthesis gas

#77
20180306214
2018-10-25

SYSTEM FOR CONTROLLING A FLOW OF FLUID, FEEDING SYSTEM COMPRISING SUCH A CONTROL SYSTEM AND METHOD USING SUCH A FEEDING SYSTEM

#78
20180283776
2018-10-04

Instrument air system and method

#79
20180274854
2018-09-27

Systems and Methods for Recovering Desired Light Hydrocarbons from Refinery Waste Gas Using a Back-End Turboexpander

#80
20180266762
2018-09-20

Method for removing a foulant from a gas stream without external refrigeration

#81
20180252469
2018-09-06

Method for removing a foulant from a gas stream with minimal external refrigeration

#82
20180245845
2018-08-30

Hydrocarbon Gas Processing

#83
20180231306
2018-08-16

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

#84
20180209726
2018-07-26

Method and system for separating carbon dioxide from flue gas

#85
20180073803
2018-03-15

Process for the production of dilute ethylene

#86
20180066889
2018-03-08

Pretreatment of natural gas prior to liquefaction

#87
20180058757
2018-03-01

Process and apparatus for producing carbon monoxide

#88
20180058756
2018-03-01

Hydrocarbon gas processing

#89
20180058755
2018-03-01

Hydrocarbon gas processing

#90
20180058754
2018-03-01

Hydrocarbon gas processing

#91
20170370641
2017-12-28

SYSTEMS AND METHODS FOR REMOVAL OF NITROGEN FROM LNG

#92
20170343279
2017-11-30

Compression method and apparatus for an apparatus for capturing COby low-temperature separation

#93
20170211877
2017-07-27

Process and apparatus for processing a hydrocarbon gas stream

#94
20170176099
2017-06-22

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

#95
20170176098
2017-06-22

SYSTEMS AND METHODS FOR AUTOMATED STARTUP OF AN AIR SEPARATION PLANT

#96
20170089638
2017-03-30

Treatment plant for hydrocarbon gas having variable contaminant levels

#97
20170082357
2017-03-23

Heating component to reduce solidification in a cryogenic distillation system

#98
20170023295
2017-01-26

METHOD AND DEVICE FOR GENERATING A GAS PRODUCT

#99
20170003073
2017-01-05

METHOD AND APPARATUS FOR SEPARATION AT SUBAMBIENT TEMPERATURE

#100
20160370110
2016-12-22

Purge to intermediate pressure in cryogenic distillation

#101
20160245583
2016-08-25

Method and apparatus for cryogenic separation of a mixture containing at least carbon monoxide, hydrogen and nitrogen

#102
20160187061
2016-06-30

Accumulation and melt tray assembly for a distillation tower

#103
20160161180
2016-06-09

Oxygen backup method and system

#104
20160138864
2016-05-19

Liquid collection system

#105
20160116210
2016-04-28

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

#106
20160040930
2016-02-11

Cryogenic system for removing acid gases from a hydrocarbon gas stream

#107
20160010917
2016-01-14

Method and system for separating fluids in a distillation tower

#108
20150362251
2015-12-17

Method for separating a feed gas in a column

#109
20150300735
2015-10-22

Method and system for starting up a distillation tower

#110
20150204605
2015-07-23

Process for the separation of a gas rich in carbon dioxide

#111
20150202578
2015-07-23

Distributor tray for gas/liquid exchange column with liquid deflector

#112
20150159946
2015-06-11

Method and system of modifying a liquid level during start-up operations

#113
20150159944
2015-06-11

Method and device for separating a feed stream using radiation detectors

#114
20150159941
2015-06-11

Method and system for preventing accumulation of solids in a distillation tower

#115
20150157957
2015-06-11

Method and apparatus for cooling a flow containing at least 35% carbon dioxide and mercury

#116
20130204066
2013-08-08

Unit for establishing contact between a gas and a liquid for a floating platform

#117
20130014390
2013-01-17

Configurations and methods for retrofitting an NGL recovery plant

#118
20120204599
2012-08-16

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

#119
20120160453
2012-06-28

COLUMN APPARATUS FOR MATERIAL EXCHANGE AND/OR HEAT EXCHANGE

#120
20120145529
2012-06-14

Apparatus, process and system for delivering fluid to a distillation column or reactor

#121
20120125043
2012-05-24

CRYOGENIC SYSTEM FOR REMOVING ACID GASES FROM A HYDROCARBON GAS STREAM

#122
20120067071
2012-03-22

Gas processing apparatus

#123
20110318160
2011-12-29

Turboexpander and method for using moveable inlet guide vanes at compressor inlet

#124
20110302955
2011-12-15

Method For Trapping CO2 By Solid Cryocondensation In A Turbine

#125
20110296868
2011-12-08

CO2 Recovery Method Using Cryo-Condensation

#126
20110290634
2011-12-01

Method for fabricating divided wall columns

#127
20110253225
2011-10-20

Method for controlling a gas flow between a plurality of gas streams

#128
20110252827
2011-10-20

CO2 Recovery And Cold Water Production Method

#129
20110130883
2011-06-02

Method and apparatus for controlling a compressor and method of cooling a hydrocarbon stream

#130
20110126584
2011-06-02

METHOD AND APPARATUS FOR TREATING A HYDROCARBON STREAM AND METHOD OF COOLING A HYDROCARBON STREAM

#131
20110031861
2011-02-10

CRYOGENIC INSULATION ATTACHMENT

#132
20100326134
2010-12-30

Hydrocarbon gas processing including a single equipment item processing assembly

#133
20100287984
2010-11-18

Hydrocarbon gas processing including a single equipment item processing assembly

#134
20100161133
2010-06-24

Dynamic constrained optimization of chemical manufacturing

#135
20100126215
2010-05-27

Method For Cooling A Cryogenic Exchange Line

#136
20100108487
2010-05-06

Dividing wall column with a heat pump

#137
20100107688
2010-05-06

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

#138
20100071410
2010-03-25

DISTILLATION PROCESS USING MICROCHANNEL TECHNOLOGY

#139
20090211295
2009-08-27

ASSEMBLY OF HEAT EXCHANGERS AND A CRYOGENIC DISTILLATION APPARATUS INCORPORATING THE SAME

#140
20090113932
2009-05-07

METHOD OF REMOVING SOLID CARBON DIOXIDE

#141
20090095017
2009-04-16

FLOATING HYDROCARBON TREATING PLANT

#142
20090000483
2009-01-01

INDUSTRIAL UNIT COMPRISING A DEVICE FOR PROTECTING THE INTERNAL PARTS THEREOF

#143
20080122226
2008-05-29

Compact assemblies for high efficiency performance of cryogenic liquefied gas expanders and pumps

#144
20080029381
2008-02-07

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

#145
20070245770
2007-10-25

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

#146
20070227187
2007-10-04

System and method for coordination and optimization of liquefied natural gas (LNG) processes

#147
20070085227
2007-04-19

Multi-phase contacting process using microchannel technology

#148
20070059838
2007-03-15

Dynamic constrained optimization of chemical manufacturing

#149
20070038333
2007-02-15

Model predictive control having application to distillation

#150
20070000282
2007-01-04

Device and method for cryogenically seperating a gas mixture

#151
20060184254
2006-08-17

Method for creating a linear programming model of an industrial process facility

#152
20060144079
2006-07-06

Method of removing solid carbon dioxide

#153
20060016216
2006-01-26

Distillation process using microchannel technology

#154
20060016215
2006-01-26

Distillation process using microchannel technology

#155
20050279131
2005-12-22

Noninvasive measurement and control system for use in hydrocarbon processing

#156
20050268648
2005-12-08

Enhanced operation of LNG facility equipped with refluxed heavies removal column

#157
20050183452
2005-08-25

LNG system with warm nitrogen rejection

#158
20050172645
2005-08-11

Floating hydrocarbon treating plant

#159
20050086976
2005-04-28

Enhanced operation of LNG facility equipped with refluxed heavies removal column

#160
17024456
2022-05-24

Condensate stabilization process