ClassID:

29705

B01D53/526 - CPC Classification

Classification description:

Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,; Chemical or biological purification of waste gases; Removing components of defined structure; Sulfur compounds; Hydrogen sulfide Mixtures of hydrogen sulfide and carbon dioxide

Recent Application in this class:
#1
20260145973
2026-05-28

RECOVERY OF CARBON DIOXIDE FROM PRODUCED WATER TO NEUTRALIZE LIQUID BRINE

#2
20260103448
2026-04-16

ACID GAS ABSORBENT, METHOD FOR REMOVING ACID GAS, AND ACID GAS REMOVAL APPARATUS

#3
20250250499
2025-08-07

METHOD AND SYSTEM FOR PRODUCING A FUEL FROM BIOGAS

#4
20250250179
2025-08-07

Systems and Methods for Ammonia Purification

#5
20250236520
2025-07-24

Coupling Claus Process with Carbon Dioxide Capture Using Gas Hydrate

#6
20250222396
2025-07-10

SIMULTANEOUS H2 PRODUCTION AND CO2 CAPTURE FROM ACID GAS STREAM

#7
20250197263
2025-06-19

A method for purifying sulphate containing wastewater and recovering sulphur and hydrogen

#8
20250109029
2025-04-03

Systems and methods for ammonia purification

#9
20250084334
2025-03-13

METHOD AND SYSTEM FOR PRODUCING A FUEL FROM BIOGAS

#10
20250073632
2025-03-06

A SYSTEM AND METHOD FOR REMOVING ACIDIC GAS FROM A POST COMBUSTION PROCESS STREAM

#11
20250065257
2025-02-27

Method and System for Removing Acid Gas from Ethylene Cracking Gas

#12
20250002801
2025-01-02

Treatment System

#13
20240417640
2024-12-19

Treatment System

#14
20240399287
2024-12-05

SOFT SENSING ALKANOLAMINE CONCENTRATION FOR INTELLIGENT CIRCULATION OPTIMIZATION

#15
20240367095
2024-11-07

TERTIARY ALKANOLAMINE FOR GAS TREATING

#16
20240342648
2024-10-17

Gas Treatment Unit, Redox System and Method for Desulfurization of Gases Including Biogas

#17
20240207785
2024-06-27

PROCESS TO CONTINUOUSLY TREAT A HYDROGEN SULPHIDE COMPRISING GAS

#18
20240173696
2024-05-30

FUNCTIONALISED HYDROGELS

#19
20240157287
2024-05-16

SCRUBBING FLUID AND METHODS FOR USING SAME

#20
20240141245
2024-05-02

Treatment system

#21
20240139679
2024-05-02

Treatment System

#22
20240067887
2024-02-29

CHEMICAL COMPOSITIONS AND METHODS OF USING SAME FOR REMEDIATING SULFUR-CONTAINING COMPOSITIONS AND OTHER CONTAMINANTS IN FLUIDS

#23
20240042377
2024-02-08

Composite amine absorbent, removal unit, and removal method

#24
20240017205
2024-01-18

TWO STEP AMINE ABSORPTION PROCESS FOR REMOVAL CO2/H2S FROM BIOGAS

#25
20240002742
2024-01-04

REMOVAL OF ACID GASES FROM GASEOUS MIXTURES CONTAINING THEM

#26
20240001288
2024-01-04

Desulfurization of Carbon Dioxide-containing Gases

#27
20230416614
2023-12-28

Process for treating offgas from hydrotreating of renewable feedstocks

#28
20230381716
2023-11-30

Gas purification apparatus and method

#29
20230357658
2023-11-09

Method for removing acid compounds from a gaseous effluent using a tertiary amine-based absorbent solution

#30
20230330590
2023-10-19

METHOD AND SYSTEM FOR MAINTAINING SOLVENT QUALITY IN GAS TREATING SYSTEMS

#31
20230053826
2023-02-23

PROCESS AND PLANT FOR GAS MIXTURES CONTAINING ACID GAS TREATMENT

#32
20220411701
2022-12-29

CHEMICAL COMPOSITIONS AND METHODS OF USING SAME FOR REMEDIATING SULFUR-CONTAINING COMPOSITIONS AND OTHER CONTAMINANTS IN FLUIDS

#33
20220380693
2022-12-01

Reservoir management by controlling acid gas build-up in reservoir by partial CO2 removal processes

#34
20220339576
2022-10-27

Method and a system for abating HS and COfrom HS and COrich gas mixtures such as geothermal non-condensable gas mixtures

#35
20220219113
2022-07-14

Scrubbing fluid and methods for using same

#36
20220177792
2022-06-09

Method and system for producing a chemical or fuel

#37
20220161224
2022-05-26

Acid gas absorbent in biogas and biogas purification system using the same

#38
20210402368
2021-12-30

Hydrogen sulfide adsorbent in biogas and biogas purification system using the same

#39
20210323819
2021-10-21

PROCESS AND APPARATUS FOR REMOVAL OF METAL CARBONYLS FROM A GAS MIXTURE

#40
20210317377
2021-10-14

Method and system for producing a fuel from biogas

#41
20210187436
2021-06-24

System for flare gas recovery using gas sweetening process

#42
20210155864
2021-05-27

Method and system for producing a fuel from biogas

#43
20210138389
2021-05-13

Process for reducing energy consumption in the regeneration of hybrid solvents

#44
20210138388
2021-05-13

Energy efficient process for separating hydrogen sulfide from gaseous mixtures using a hybrid solvent mixture

#45
20210086131
2021-03-25

Removal of acid gases from a gas stream, with O2 enrichment for acid gas capture and sequestration

#46
20210069638
2021-03-11

Gas purification using a co-axial co-current contactor

#47
20210053827
2021-02-25

Sulfur recovery within a gas processing system

#48
20210031138
2021-02-04

Absorbent liquid for CO2 and/or H2S, and apparatus and method using same

#49
20210016222
2021-01-21

FOULING MITIGATION IN ALKANOLAMINE TREATING SYSTEMS

#50
20210008497
2021-01-14

System for flare gas recovery using gas sweetening process

#51
20200406187
2020-12-31

Method for Purifying a Gaseous, Liquid or Aerosol Composition Containing at Least One Polluant

#52
20200368674
2020-11-26

Acid gas removal apparatus and acid gas removal method

#53
20200346163
2020-11-05

COST-EFFECTIVE GAS PURIFICATION METHODS AND SYSTEMS BY MEANS OF EJECTORS

#54
20200148964
2020-05-14

Method and system for producing a fuel

#55
20190388829
2019-12-26

Absorbent for selective removal of hydrogen sulfide from a fluid stream

#56
20190336908
2019-11-07

Coalescer for co-current contactors

#57
20190314755
2019-10-17

System for flare gas recovery using gas sweetening process

#58
20190240616
2019-08-08

Method of extracting components of gas mixtures by pertraction on nanoporous membranes

#59
20190022580
2019-01-24

System for flare gas recovery using gas sweetening process

#60
20180339265
2018-11-29

SYSTEM FOR TIME-SHIFTING POST-COMBUSTION CO2 CAPTURE

#61
20180327263
2018-11-15

Process and apparatus for treating a sour synthesis gas

#62
20180280867
2018-10-04

Absorbent liquid for COand/or HS, and apparatus and method using same

#63
20180257032
2018-09-13

SYSTEMS AND METHODS FOR ACID GAS REMOVAL FROM A GASEOUS STREAM

#64
20180105754
2018-04-19

Electrolyzed water-amine compositions and methods of use

#65
20170333826
2017-11-23

Process for removing and recovering HS from a gas stream by cyclic adsorption

#66
20170305817
2017-10-26

Separations with ionic liquid solvents

#67
20170263964
2017-09-14

Rechargeable battery assembly for a vehicle

#68
20170259245
2017-09-14

Gas absorption material, use of same for gas absorption, gas absorption body, gas absorption method, acidic gas absorption device, acidic gas recovery device, water vapor absorption device, water vapor recovery device, heat exchanger, and heat recovery device

#69
20170216812
2017-08-03

Integrated process to recover high quality native COfrom a sour gas comprising HS and CO

#70
20170158508
2017-06-08

Method to prepare one or more chemical products using hydrogen sulfide

#71
20170050141
2017-02-23

Apparatus for removing an acid gas from a gas stream

#72
20160289571
2016-10-06

Electrolized water—amine compositions and methods of use

#73
20160288049
2016-10-06

Reclaiming device, method, and recovery unit of CO, HS, or both of COand HS

#74
20160263516
2016-09-15

Coalescer for co-current contractors

#75
20160256825
2016-09-08

Reclaiming device, method, and recovery unit of CO, HS, or both of COand HS

#76
20160096784
2016-04-07

Separations with ionic liquid solvents

#77
20150361364
2015-12-17

System and method for recovering gas containing COand HS

#78
20150321138
2015-11-12

METHOD FOR REMOVING ACID COMPOUNDS FROM A GASEOUS EFFLUENT USING AN ABSORBENT SOLUTION BASED ON 1,2-BIS(2-DIMETHYLAMINOETHOXY)ETHANE AND AN ACTIVATOR

#79
20150307359
2015-10-29

Integrated process to recover high quality native COfrom a sour gas comprising HS and CO

#80
20150306541
2015-10-29

METHODS FOR TREATING FURNACE OFFGAS

#81
20150251129
2015-09-10

Method and device for stripping a gas from a gas mixture using a venturi ejector

#82
20150224442
2015-08-13

Method for processing acid gas and apparatus thereof

#83
20150202568
2015-07-23

Systems and methods for acid gas removal from a gaseous stream

#84
20150157975
2015-06-11

Absorbent composition for the selective absorption of hydrogen sulfide

#85
20150133711
2015-05-14

Separations with ionic liquid solvents

#86
20150132207
2015-05-14

Complex amine absorbent, and device and method for removing one or both of COand HS

#87
20150111024
2015-04-23

Nucleophilic porous carbon materials for CO2 and H2S capture

#88
20150093313
2015-04-02

IONIC LIQUID AND SOLVENT MIXTURES FOR HYDROGEN SULFIDE REMOVAL

#89
20150030524
2015-01-29

Separations with ionic liquid solvents

#90
20140335001
2014-11-13

Removal of hydrogen sulfide from gas streams

#91
20140312271
2014-10-23

Method of preparation of a COremoval sorbent with high chemical stability during multiple cycles

#92
20140301930
2014-10-09

Absorbent tertiary monoalkanolamine solution belonging to the 3-alcoxypropylamine family, and method for removing acidic compounds contained in a gas effluent

#93
20140234192
2014-08-21

THREE-COMPONENT ABSORBENT, AND DEVICE AND METHOD FOR REMOVING CO2 AND/OR H2S

#94
20140234176
2014-08-21

Simultaneous high efficiency capture of COand HS from pressurized gas

#95
20140161697
2014-06-12

Separation of COand HS using supported amines

#96
20140112855
2014-04-24

Separation of components from a gas mixture

#97
20130053456
2013-02-28

Two-stage gas washing method applying sulfide precipitation and alkaline absorption

#98
20130045517
2013-02-21

FERMENTATION OF WASTE GASES

#99
20120312163
2012-12-13

Temperature swing adsorption process for the separation of target species from a gas mixture

#100
20120308456
2012-12-06

Selective sulfur removal process

#101
20120279728
2012-11-08

Removal of acid gases from a gas stream, with COcapture and sequestration

#102
20120240617
2012-09-27

Sour gas treatment process

#103
20120222555
2012-09-06

Gas purification process utilizing engineered small particle adsorbents

#104
20120222554
2012-09-06

Rapid temperature swing adsorption contactors for gas separation

#105
20120222553
2012-09-06

Pressure-temperature swing adsorption process

#106
20120222552
2012-09-06

Pressure-temperature swing adsorption process for the separation of heavy hydrocarbons from natural gas streams

#107
20120222551
2012-09-06

Swing adsorption processes utilizing controlled adsorption fronts

#108
20120216678
2012-08-30

ABSORBENT COMPOSITION AND PROCESS FOR REMOVING CO2 AND/OR H2S FROM A GAS COMPRISING CO2 AND/OR H2S

#109
20120214881
2012-08-23

Two-stage gas washing method

#110
20120202897
2012-08-09

METHOD OF PURIFYING A GAS

#111
20120063991
2012-03-15

Method of treating an acid gas stream and an apparatus therefor

#112
20120058545
2012-03-08

Method of treating an off-gas stream and an apparatus therefor

#113
20120000357
2012-01-05

Apparatus and method for biogas purification

#114
20110293509
2011-12-01

Water gas shift process

#115
20110271714
2011-11-10

Configurations and methods of carbon capture

#116
20110225971
2011-09-22

Method and device to remove hydrogen sulfide from steam condensate in a geothermal power generating unit

#117
20110192192
2011-08-11

PROCESS FOR REMOVING GASEOUS CONTAMINANTS FROM A FEED GAS STREAM COMPRISING METHANE AND GASEOUS CONTAMINANTS

#118
20110179714
2011-07-28

PROCESS FOR THE PURIFICATION-SWEETENING OF NATURAL GAS BY MEANS OF CONTROLLED DISSOCIATION OF HYDRATES AND USE THEREOF AS SEPARATORS

#119
20110175032
2011-07-21

Method and plant for the production of synthesis gas from biogas

#120
20100310439
2010-12-09

Process for removal of hydrogen sulphide and carbon dioxide from an acid gas stream

#121
20100305220
2010-12-02

Method and apparatus for producing liquid biofuel from solid biomass

#122
20100303693
2010-12-02

HYBRID SOLVENT USING PHYSICAL SOLVENTS AND NANOPARTICLE ADSORBENTS

#123
20100278702
2010-11-04

System and method for removing sulfur from gas stream

#124
20100251613
2010-10-07

Method and apparatus to recycle tail gas

#125
20100132551
2010-06-03

Gas deacidizing method using an absorbent solution with demixing during regeneration

#126
20100037772
2010-02-18

Apparatus and method for biogas purification

#127
20090148373
2009-06-11

Process to remove hydrogen-sulfide from gas by reflux recycle from sour water stripper

#128
20090130008
2009-05-21

Process for Removing Hydrogen Disulfide from Gas

#129
20090035199
2009-02-05

Method for sour gas treatment

#130
20080213147
2008-09-04

Process for treating a gas stream

#131
20080187485
2008-08-07

Method of extracting the hydrogen sulfide contained in a hydrocarbon gas

#132
20080078292
2008-04-03

Absorbing solution, method and device for absorbing COor HS or both

#133
20070269357
2007-11-22

Process for treating a gas stream

#134
20070131112
2007-06-14

Method for removing hydrogen sulphide and other acidic gas components from pressurized technical gases

#135
20060260189
2006-11-23

Configurations and methods of carbon capture

#136
18809324
2025-01-21

Method for underground separation of components in sulfur-containing flue gas and sequestration of carbon dioxide and sulfides

#137
18424094
2025-04-22

System and method for cleaning of biogas

#138
18424009
2025-04-01

System and method for cleaning of biogas

#139
17033044
2022-01-25

Scrubbing fluid and methods for using same