ClassID:

29701

B01D53/507 - 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; Sulfur oxides by treating the gases with other liquids

Recent Application in this class:
#1
20260077296
2026-03-19

COMPLETE CONVERSION OF SULFUR DIOXIDE TO SULFURIC ACID BY AQUEOUS ACID ABSORPTION

#2
20260007998
2026-01-08

REGENERABLE SOLVENT MIXTURES FOR ACID-GAS SEPARATION

#3
20250360457
2025-11-27

GAS TREATMENT METHOD AND GAS TREATMENT DEVICE

#4
20250313468
2025-10-09

TAIL GAS TREATMENT SYSTEM AND METHOD FOR A SULFURIC ACID PRODUCTION PLANT

#5
20250312730
2025-10-09

ACIDIC GAS ABSORBENTS COMPRISING IONIC LIQUIDS

#6
20250177906
2025-06-05

RECOVERY METHOD OF ABSORPTION SOLVENT WASTE LIQUID AND CO2 CAPTURE METHOD

#7
20250161877
2025-05-22

REMOVAL OF ATMOSPHERIC POLLUTANTS FROM GAS, RELATED APPARATUSES, PROCESSES AND USES THEREOF

#8
20250145902
2025-05-08

AQUEOUS SOLUTIONS AND METHODS OF USING SAME FOR REMEDIATING CONTAMINANTS IN CONTAMINATED GASSES

#9
20250091000
2025-03-20

System And Methods For Plasma-Based Remediation of SOx and NOx

#10
20250065268
2025-02-27

Method And Apparatus For Removing A Target Substance From A Gas

#11
20250041798
2025-02-06

VERSATILE SCRUBBING LIQUID FOR REMOVAL OF CONTAMINANTS FROM A GASEOUS STREAM

#12
20250025829
2025-01-23

Carbon Capture

#13
20240216860
2024-07-04

METHOD FOR CAPTURING CARBON DIOXIDE AND NITROGEN OXIDES IN FLUE GAS AND CONVERSION THEREOF TO CARBON SOURCE AND NITROGEN SOURCE NEEDED FOR ALGAE GROWTH

#14
20240189772
2024-06-13

Method for recycling electronic-grade and industrial-grade sulfuric acid

#15
20240157287
2024-05-16

SCRUBBING FLUID AND METHODS FOR USING SAME

#16
20240058750
2024-02-22

IMPROVING CATALYTIC EFFICIENCY OF FLUE GAS FILTRATION THROUGH SALT FORMATION BY USING AT LEAST ONE OXIDIZING AGENT

#17
20230372867
2023-11-23

APPARATUS FOR REDUCING GREENHOUSE GAS EMISSION IN VESSEL AND VESSEL INCLUDING THE SAME

#18
20230364553
2023-11-16

COOLING APPARATUS AND METHOD FOR AMMONIA-BASED DECARBONIZATION

#19
20230321596
2023-10-12

METHOD FOR WET REMOVAL OF SULFUR DIOXIDE BY SILICATE BACTERIA-ENHANCED PULP

#20
20230241547
2023-08-03

REGENERABLE SOLVENT MIXTURES FOR ACID-GAS SEPARATION

#21
20220306536
2022-09-29

Red mud utilization method based on co-processing of industrial exhaust gas, sewage treatment and environment-friendly and high performance civil functional material

#22
20220226769
2022-07-21

GAS TREATMENT METHOD, AND GAS TREATMENT DEVICE

#23
20220219118
2022-07-14

Removal of atmospheric pollutants from gas, related apparatuses, processes and uses thereof

#24
20220219113
2022-07-14

Scrubbing fluid and methods for using same

#25
20220152553
2022-05-19

Systems and methods for plasma-based remediation of SOand NO

#26
20220040629
2022-02-10

PITCH DESTRUCTION PROCESSES USING THERMAL OXIDATION SYSTEM

#27
20210275964
2021-09-09

METHOD FOR CONTROLLING WET FLUE GAS DESULFURIZATION DEVICE, DEVICE FOR CONTROLLING WET FLUE GAS DESULFURIZATION DEVICE, AND REMOTE MONITORING SYSTEM COMPRISING DEVICE FOR CONTROLLING WET FLUE GAS DESULFURIZATION DEVICE

#28
20210197117
2021-07-01

Controlling aerosol production during absorption in ammonia-based desulfurization

#29
20210178316
2021-06-17

Regenerable solvent mixtures for acid-gas separation

#30
20210016226
2021-01-21

Gas treatment method and gas treatment apparatus

#31
20200368682
2020-11-26

Air pollution control unit and air pollution control method, and CO2 recovery unit and CO2 recovery method

#32
20200191390
2020-06-18

Method of safely emitting high-temperature exhaust gas for offshore platform, and cooling and purification device

#33
20200188847
2020-06-18

Removal of greenhouse gases and heavy metals from an emission stream

#34
20200155997
2020-05-21

Sulfur dioxide absorbent is an ionic liquid including a salt of a diamine compound that is substituted with a hydroxyl group

#35
20200147547
2020-05-14

Method for the removal of oxygen from an industrial gas feed

#36
20200078731
2020-03-12

REMOVAL OF ATMOSPHERIC POLLUTANTS FROM GAS, RELATED APPARATUSES, PROCESSES AND USES THEREOF

#37
20190344216
2019-11-14

Ammonia-based desulfurization process and apparatus

#38
20190336912
2019-11-07

PHOSPHATE ROCK SCRUBBING OF A SULFUR DIXOIDE GAS STREAM

#39
20190321776
2019-10-24

Method for flue gas desulfurization with molten carbonate

#40
20190209963
2019-07-11

Ammonia-based desulfurization process and apparatus

#41
20190201837
2019-07-04

Regenerative recovery of sulfur dioxide from effluent gases

#42
20190153344
2019-05-23

Process for energy recovery in carbon black production

#43
20190126201
2019-05-02

Method for the removal of oxygen from an industrial gas

#44
20190083924
2019-03-21

AMOUNT OF SEAWATER CONTROL DEVICE FOR SCRUBBER, AMOUNT OF SEAWATER CONTROL METHOD FOR SCRUBBER, AND AMOUNT OF ALKALI CONTROL DEVICE AND AMOUNT OF ALKALI CONTROL METHOD

#45
20190076780
2019-03-14

Ammonia-based desulfurization process and apparatus

#46
20180345206
2018-12-06

Regenerable solvent mixtures for acid-gas separation

#47
20180339267
2018-11-29

Ammonia-based desulfurization process and apparatus

#48
20180236400
2018-08-23

Mercury control in a seawater flue gas desulfurization system

#49
20180222778
2018-08-09

Method and system for applying superimposed time-varying frequency electromagnetic wave to water to effect various treatment functions

#50
20180221821
2018-08-09

Method and system for applying superimposed time-varying frequency electromagnetic wave for removal of SO, COand NOfrom flue gases

#51
20180201526
2018-07-19

Method and system for applying superimposed time-varying frequency electromagnetic wave for marine ballast water bio-fouling control

#52
20180193798
2018-07-12

Gas treatment system and gas treatment method

#53
20180161725
2018-06-14

System and method for reducing liquid discharge from one or more devices

#54
20180056238
2018-03-01

Simplified Air Quality Control System For Fluid Catalytic Cracking Units

#55
20180043302
2018-02-15

Desulfurization and denitration agent

#56
20170368501
2017-12-28

Methods and systems for marine sulfur dioxide emission reduction

#57
20170349437
2017-12-07

Process and plant for improved energy-efficient production of sulfuric acid

#58
20170326496
2017-11-16

Method of treating gas and gas treatment device

#59
20170312683
2017-11-02

Wet flue gas desulfurization system with zero waste water liquid discharge

#60
20170296963
2017-10-19

Processes and methods using chlorine dioxide to remove NOx and SOx from marine exhaust

#61
20170252697
2017-09-07

Method for the catalytic removal of sulphur dioxide from waste gases

#62
20170232450
2017-08-17

Wet electrostatic precipitator and method of treating an exhaust

#63
20170197177
2017-07-13

Combustion gas removal from flue gas using coal derived mineral matter

#64
20170182457
2017-06-29

Process and plant for the production of liquid acid

#65
20170173519
2017-06-22

DESULFURIZATION DEVICE

#66
20170165609
2017-06-15

Exhaust gas scrubber

#67
20170056822
2017-03-02

Methods and systems for inhibiting crystalline buildup in a flue gas desulfurization unit

#68
20170038141
2017-02-09

Harmonic balancer for spray dryer absorber atomizer

#69
20170021304
2017-01-26

Method for removing SOfrom gas using ethylene glycol composite solution

#70
20160317968
2016-11-03

Amount-of-seawater control device for scrubber, amount-of-seawater control method for scrubber, and amount-of-alkali control device

#71
20160310888
2016-10-27

Method for removing SOfrom gas using polyol composite solution

#72
20160296887
2016-10-13

Removal of atmospheric pollutants from gas, related apparatuses, processes and uses thereof

#73
20160263522
2016-09-15

Regenerative recovery of contaminants from effluent gases

#74
20160193567
2016-07-07

NOX REMOVAL SYSTEM FOR BIOGAS ENGINES AT ANAEROBIC DIGESTION FACILITIES

#75
20160193565
2016-07-07

Method for removing dust and sulphur oxides from process gases

#76
20160184774
2016-06-30

Flue-gas purification and reclamation system and method thereof

#77
20160046511
2016-02-18

System and method for softening water for use in a scrubber

#78
20160030883
2016-02-04

METHOD AND APPARATUS FOR TREATING ACIDIC TAIL GAS BY USING AMMONIA PROCESS FLUE GAS

#79
20160016113
2016-01-21

Reducing hydrochloric acid in cement kilns

#80
20160001225
2016-01-07

EXHAUST GAS CLEAN-UP SYSTEM FOR FOSSIL FUEL FIRED POWER PLANT

#81
20150375167
2015-12-31

Method and apparatus for preventing corrosion of compressor impurity separation mechanism

#82
20150352489
2015-12-10

EFFECTIVE REMOVAL OF ACIDIC SULFIDE GAS USING AMMONIA-BASED DESULFURIZATION

#83
20150328581
2015-11-19

Regenerable solvent mixtures for acid-gas separation

#84
20150314234
2015-11-05

Process for controlling the emission of flue gases

#85
20150298056
2015-10-22

Desulfurization method and device for sulfuric acid production device

#86
20150238897
2015-08-27

System, a use of such a system and a multi system for cleaning exhaust gas

#87
20150231558
2015-08-20

Combined cleaning system and method for reduction of SOX and NOX in exhaust gases from a combustion engine

#88
20150225811
2015-08-13

Recovery of zinc from lead slag

#89
20150224443
2015-08-13

Removal of atmospheric pollutants from gas, related apparatuses, processes and uses thereof

#90
20150209724
2015-07-30

HEAT-STABLE SALT REMOVING SYSTEM, CARBON DIOXIDE RECOVERING SYSTEM AND HEAT-STABLE SALT REMOVING METHOD

#91
20150209720
2015-07-30

Amount of seawater control device for scrubber, amount of seawater control method for scrubber, and amount of alkali control device and amount of alkali control method

#92
20150202567
2015-07-23

Methods for removing contaminants from exhaust gases

#93
20150174527
2015-06-25

Exhaust gas processing apparatus

#94
20150151245
2015-06-04

Sulphur dioxide treatment

#95
20150125353
2015-05-07

Air pollution control apparatus

#96
20150118136
2015-04-30

Absorbent for desulfurization of combustion gas and method of treating combustion gas using the same

#97
20150104365
2015-04-16

Flue-gas purification and reclamation system and method thereof

#98
20150023855
2015-01-22

Wet scrubber nozzle system and method of use for cleaning a process gas

#99
20140369916
2014-12-18

Process for controlling the emission of flue gases

#100
20140322118
2014-10-30

Regenerative recovery of contaminants from effluent gases

#101
20140314650
2014-10-23

Processes, apparatus, compositions and systems for reducing emissions of HCI and/or sulfur oxides

#102
20140154158
2014-06-05

Apparatus and method for removing sulfur dioxide from flue gases

#103
20140140913
2014-05-22

Methods for removing contaminants from exhaust gases

#104
20140080071
2014-03-20

Method and device for cleaning an industrial waste gas comprising CO

#105
20140065046
2014-03-06

DESULPHURIZATION AND COOLING OF PROCESS GAS

#106
20140050651
2014-02-20

System and process for trapping sulfur dioxide and carbon dioxide by ammonia absorption at atmospheric pressure

#107
20140050645
2014-02-20

Wet scrubber for removing sulfur dioxide from a process gas

#108
20140050643
2014-02-20

Flur-gas purification and reclamation system and method thereof

#109
20140017153
2014-01-16

N-functionalized imidazole-containing systems and methods of use

#110
20130319225
2013-12-05

Back-up configurations and method for sulfuric acid plants

#111
20130315807
2013-11-28

Regenerative recovery of contaminants from effluent gases

#112
20130306556
2013-11-21

Method and a device for treating effluent seawater from a seawater scrubber

#113
20130296615
2013-11-07

Multi-pollutant abatement device and method

#114
20130259789
2013-10-03

Removing sulphur oxides from a fluid stream

#115
20130228073
2013-09-05

METHODS AND APPARATUSES FOR COOLING AND SCRUBBING DIESEL EXHAUST GASES ON A SHIP

#116
20130224093
2013-08-29

Process and apparatus for removal of nitrogen oxides, sulfur oxides and mercury from off gas through oxidization

#117
20130139738
2013-06-06

Method and a device for cleaning a carbon dioxide rich flue gas

#118
20130118351
2013-05-16

Air pollution control system and method

#119
20130078174
2013-03-28

Decomposition/elimination method using a photocatalytic material

#120
20130074693
2013-03-28

Water-saving liquid-gas conditioning system

#121
20130042759
2013-02-21

Flue gas treatment system

#122
20130034480
2013-02-07

Off gas treatment using a metal reactant alloy composition

#123
20120312166
2012-12-13

System and method for purifying ship diesel exhaust gases

#124
20120311997
2012-12-13

NOx Removal system for biogas engines at anaerobic digestion facilities

#125
20120248372
2012-10-04

N-functionalized imidazole-containing systems and methods of use

#126
20120213690
2012-08-23

Integration of Catalytic SO2 Oxidation and Oxyfuel Sour Compression

#127
20120189520
2012-07-26

Activation of reactive compound with catalyst

#128
20120178864
2012-07-12

Corrosion control in and selenium removal from flue gas wet scrubber systems

#129
20120177555
2012-07-12

Corrosion control in and selenium removal from flue gas wet scrubber systems

#130
20120177554
2012-07-12

Corrosion control in and selenium removal from flue gas wet scrubber systems

#131
20120175554
2012-07-12

Corrosion control in and selenium removal from flue gas wet scrubber systems

#132
20120107209
2012-05-03

Regenerative recovery of sulfur dioxide from effluent gases

#133
20120009106
2012-01-12

Integration of catalytic COoxidation and oxyfuel sour compression

#134
20110315014
2011-12-29

Method for removing SOx from gas using polyethylene glycol

#135
20110223086
2011-09-15

Aromatic amino compounds for carbon dioxide and sulfur dioxide removal

#136
20110168540
2011-07-14

Desalination apparatus and process

#137
20110065166
2011-03-17

NOx removal system for biogas engines at anaerobic digestion facilities

#138
20110033370
2011-02-10

System and method for sulfur recovery

#139
20100300286
2010-12-02

Approaches for removing CO, SOand other gaseous contaminates from gas emissions

#140
20100266472
2010-10-21

Ship flue gas scrubbing equipment and method

#141
20100247394
2010-09-30

PROCESS FOR PROMOTING MERCURY RETENTION IN WET FLUE GAS DESULFURIZATION SYSTEMS

#142
20100224070
2010-09-09

Shipboard Vessel Having a Vertically Aligned Scrubber and Process Component

#143
20100212497
2010-08-26

System and method for softening water for use in a scrubber

#144
20100206171
2010-08-19

Ship flue gas desulphurization method and equipment

#145
20100166627
2010-07-01

USE OF HYDROPHOBINS AS ADDITIVES IN THE CRYSTALLIZATION OF SOLIDS

#146
20100126395
2010-05-27

Process for producing steam and/or power from oil residues with high sulfur content

#147
20100104492
2010-04-29

CARBON OXIDE AND/OR SULFUR OXIDE CAPTURE IN A LIQUID ENVIRONMENT

#148
20100068110
2010-03-18

Removal of Hg, NO, and SOwith using oxidants and staged gas/liquid contact

#149
20090260519
2009-10-22

PROCESS FOR THE ABSORPTION OF SULFUR DIOXIDE FROM FLUE GAS

#150
20090155155
2009-06-18

Cupola flue gas treatment

#151
20090148372
2009-06-11

Complexation and removal of heavy metals from flue gas desulfurization systems

#152
20090148367
2009-06-11

Process for promoting mercury retention in wet flue gas desulfurization systems

#153
20080264255
2008-10-30

PROCESSES FOR REMOVING SOx AND SULFURIC ACID AEROSOLS FROM CHLORINE-CONTAINING PROCESS GASES

#154
20080264250
2008-10-30

Flue gas desulfurization process utilizing hydrogen peroxide

#155
20080241037
2008-10-02

Method and system of controlling sulfur oxides in flue gas from coal or oil-fired boilers

#156
20080241030
2008-10-02

Control of emissions

#157
20080213148
2008-09-04

Control of emissions

#158
20080199379
2008-08-21

Method and Device For Removing Sulphur Dioxide From a Dry Gas Stream

#159
20080112858
2008-05-15

Reactive membrane process for the removal of vapor phase contaminants

#160
20080044341
2008-02-21

Sulfurous acid mist and sulfur dioxide gas recovery system

#161
20080044333
2008-02-21

Method and apparatus for NOx and Hg removal

#162
20070297963
2007-12-27

Emission control systems and methods thereof

#163
20070243119
2007-10-18

Process for controlling the moisture concentration of a combustion flue gas

#164
20070196255
2007-08-23

Process of gas treatment to remove pollutants

#165
20060251559
2006-11-09

Method and installation for purifying gas

#166
20060057047
2006-03-16

Process for removal of SOfrom off-gases by reaction with HO

#167
20060029533
2006-02-09

Reactive membrane process for the removal of vapor phase contaminants

#168
20060021506
2006-02-02

Method and apparatus for NO and Hg removal

#169
20050255019
2005-11-17

Emission control system

#170
20050214187
2005-09-29

Removal of Hg, NO, and SOwith using oxidants and staged gas/liquid contact

#171
19004516
2026-02-17

Desulfurization and denitrification agent and application thereof

#172
18809324
2025-01-21

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

#173
18769774
2025-01-07

Aqueous solutions and methods of using same for remediating contaminants in contaminated gasses

#174
17950719
2023-09-19

Reducing sulfur emissions of sulfur recovery plant by a sorption based SOselective crosslinked polyionic liquid system

#175
17033044
2022-01-25

Scrubbing fluid and methods for using same

#176
16105654
2019-10-15

Production and use of ultra-clean carbon compounds and uniform heat from carbon-based feedstocks

#177
15619122
2018-07-10

Ammonia-based desufurization process and apparatus