ClassID:

29698

B01D53/502 - 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 a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension

Recent Application in this class:
#1
20260097360
2026-04-09

METHODS AND SYSTEMS FOR COLLABORATIVE PREDICTION AND INTELLIGENT CONTROL OF MULTIPLE POLLUTANTS IN WASTE INCINERATION FLUE GAS

#2
20250161864
2025-05-22

SYSTEM AND METHOD FOR TREATING COAL-FIRED FLUE GAS

#3
20250135399
2025-05-01

METHOD AND DEVICE FOR CONTROLLING AMMONIA ESCAPE AND SOLUBLE PARTICULATE MATTER WITH LOW ENERGY CONSUMPTION IN AN AMMONIA-BASED CARBON CAPTURE PROCESS

#4
20250099909
2025-03-27

FLUE GAS POLISHING SYSTEM

#5
20250090993
2025-03-20

CARBON DIOXIDE AND SULFUR OXIDE CAPTURE AND CARBON RESOURCE CONVERSION SYSTEM FOR COAL-FIRED POWER GENERATION

#6
20240307813
2024-09-19

METHODS AND SYSTEMS FOR THE REMOVAL OF IMPURITIES IN A FLUE GAS

#7
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

#8
20240100579
2024-03-28

RESOURCE RECOVERY METHOD AND RESOURCE RECOVERY SYSTEM OF DESULFURIZED ASH

#9
20240091702
2024-03-21

CHEMICAL SEQUESTERING OF CO2, NOx and SO2

#10
20240033684
2024-02-01

TREATMENT OF ACID GASES USING MOLTEN ALKALI METAL BORATES, AND ASSOCIATED METHODS OF SEPARATION

#11
20230405519
2023-12-21

DEVICE AND METHOD FOR CONTROLLING AMMONIA ESCAPE IN AMMONIA-BASED DECARBONIZATION SYSTEM

#12
20230311057
2023-10-05

SYSTEM FOR CAPTURING CARBON DIOXIDE AND SULFUR OXIDES AND UTILIZING CARBON FOR SHIPS

#13
20230219037
2023-07-13

DESULFURIZATION AND SULFUR RECOVERY METHOD FOR SULFUR DIOXIDE FLUE GAS

#14
20230158449
2023-05-25

DRY SORBENT INJECTION WITH RECIRCULATION

#15
20230046206
2023-02-16

System and method for resource recycling of sulfur dioxide

#16
20230017568
2023-01-19

METHOD AND SYSTEM FOR ZERO DISCHARGE TREATMENT OF DESULFURIZATION WASTEWATER SUITABLE FOR MULTIPLE WORKING CONDITIONS

#17
20220412556
2022-12-29

SYSTEM AND METHOD FOR DESULFURIZING AND DECARBONIZING FLUE GAS

#18
20220331735
2022-10-20

Ammonia desulphurization and oxidation apparatus and method

#19
20220316078
2022-10-06

Method for preparing hydrogen sulfide from sulfur dioxide by electrochemical reduction

#20
20220274049
2022-09-01

Chemical sequestering of CO, NOand SO

#21
20220267207
2022-08-25

LIME HYDRATE WITH IMPROVED REACTIVITY VIA ADDITIVES

#22
20220258098
2022-08-18

Treatment of acid gases using molten alkali metal borates, and associated methods of separation

#23
20220258096
2022-08-18

Method and process for capturing carbon dioxide from marine engines

#24
20220176315
2022-06-09

Method and installation for removing a gas from a flow of a gas mixture

#25
20220152554
2022-05-19

Method for scrubbing exhaust gas from CO and/or SO

#26
20220134279
2022-05-05

SOcapture using carbonate absorbent

#27
20220096997
2022-03-31

CHEMICAL SEQUESTERING OF CO2, NOX AND SO2

#28
20220062814
2022-03-03

System and method for mixing recirculating combustion ash with hydrated lime and water

#29
20220048606
2022-02-17

Method and process for capturing carbon dioxide from marine engines

#30
20220041527
2022-02-10

Naphtha complex with thermal oxidation system

#31
20220040629
2022-02-10

PITCH DESTRUCTION PROCESSES USING THERMAL OXIDATION SYSTEM

#32
20220033722
2022-02-03

Renewable transportation fuel process with thermal oxidation system

#33
20210354086
2021-11-18

METHOD FOR SIMULTANEOUSLY REMOVING HIGH-LOAD SULFUR DIOXIDE AND NITROGEN OXIDE IN WASTE GAS

#34
20210331922
2021-10-28

Process for preparing sulfur from reduction of sulfate/ nitrate by iron-carbon and recovering desulfurization/ denitration agents

#35
20210285637
2021-09-16

Method and system for improving boiler effectiveness

#36
20210275966
2021-09-09

Method and installation for the reduction of sulphur oxides in exhaust gas from marine diesel engines

#37
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

#38
20210239326
2021-08-05

Energy-saving system using electric heat pump to deeply recover flue gas waste heat from heat power plant for district heating

#39
20210138401
2021-05-13

Treatment of acid gases using molten alkali metal borates and associated methods of separation

#40
20210129077
2021-05-06

Conversion equipment for flue gas desulfurization systems and methods of converting calcium-based flue gas desulfurization systems

#41
20210114878
2021-04-22

Method for production of ammonium phosphate from phosphate rock slurry

#42
20210073701
2021-03-11

OPERATION SUPPORT SYSTEM AND OPERATION SUPPORT METHOD FOR DESULFURIZATION APPARATUS

#43
20210069642
2021-03-11

Multi-pollutant exhaust treatment using seawater for marine applications

#44
20210069636
2021-03-11

Methods for the capture of gaseous sulfur-containing compounds from a natural gas containing hydrogen sulfide

#45
20200368679
2020-11-26

SOcapture using carbonate absorbent

#46
20200332390
2020-10-22

Method for preparing iron ore concentrates by recycling copper slag tailings

#47
20200325345
2020-10-15

METHODS AND SYSTEMS FOR PARTICULATE MATTER REMOVAL FROM A PROCESS EXHAUST GAS STREAM

#48
20200299207
2020-09-24

Method for ammonium-enhanced flue gas desulfurization by using red mud slurry

#49
20200299156
2020-09-24

Systems and methods of reducing selenium contamination in waste water

#50
20200277501
2020-09-03

Methods and systems for particulate matter removal from a process exhaust gas stream

#51
20200230549
2020-07-23

Reducing mercury air and water emissions from a coal fired power plant within a FGD system using a biocide

#52
20200188848
2020-06-18

Flue gas desulfurization system and method for performing flue gas desulfurization

#53
20200108403
2020-04-09

Dust collecting module and desulfurizing apparatus having same

#54
20200101471
2020-04-02

Dust collecting module, desulfurizing apparatus having same, and method of installing dust collecting module

#55
20200094186
2020-03-26

SPRAY PIPE AND DESULFURIZATION APPARATUS PROVIDED WITH THE SAME

#56
20200078729
2020-03-12

SEPARATION AND CO-CAPTURE OF CO2 AND SO2 FROM COMBUSTION PROCESS FLUE GAS

#57
20200071207
2020-03-05

Non-waste water flue gas treatment system and non-waste water flue gas treatment method

#58
20200038807
2020-02-06

METHOD AND APPARATUS FOR FIXING CARBON DIOXIDE, AND FUEL GAS DESULFURIZATION FACILITY

#59
20200016530
2020-01-16

Process for removing S02 from gas with S02 content that is temporarily very high

#60
20190388833
2019-12-26

Mercury emission control from a wet flue gas scrubber

#61
20190374906
2019-12-12

Method and apparatus for removing sulfur oxides from gas

#62
20190314757
2019-10-17

Oxidization of ammonia desulfurization solution

#63
20190301735
2019-10-03

Method and system for improving boiler effectiveness

#64
20190282957
2019-09-19

Dust removal and desulfurization of FCC exhaust gas

#65
20190270048
2019-09-05

Method for controlling aerosol production during absorption in ammonia desulfurization

#66
20190201823
2019-07-04

Composite material for air purification, preparation method therefor and application thereof

#67
20190143265
2019-05-16

Method and apparatus for removing sulfur oxides from gas

#68
20190126197
2019-05-02

Method for controlling aerosol production during absorption in ammonia desulfurization

#69
20190105605
2019-04-11

Conversion equipment for flue gas desulfurization systems and methods of converting calcium-based flue gas desulfurization systems

#70
20190085168
2019-03-21

Methods and systems for particulate matter removal from a process exhaust gas stream

#71
20190070554
2019-03-07

Method for controlling aerosol production during absorption in ammonia desulfurization

#72
20190054419
2019-02-21

Dust removal and desulfurization of FCC exhaust gas

#73
20190046925
2019-02-14

Method and apparatus for removing sulfur oxides from gas

#74
20190039019
2019-02-07

Complexation and removal of mercury from flue gas desulfurization systems

#75
20190001257
2019-01-03

Wet flue gas desulfurization process and apparatus

#76
20180361393
2018-12-20

Systems and method for removal of acid gas in a circulating dry scrubber

#77
20180361312
2018-12-20

Methods and systems for removing contaminants from flue gas on a ship or offshore floating vessel using a rotating packed bed device

#78
20180353899
2018-12-13

Process and system for removing sulfur dioxide from flue gas

#79
20180339266
2018-11-29

Dust removal and desulfurization of FCC exhaust gas

#80
20180311678
2018-11-01

Systems and method for removal of acid gas in a circulating dry scrubber

#81
20180265370
2018-09-20

CONTROLLED PROCESS FOR PRECIPITATING CALCIUM CARBONATE AND VATERITE PRECIPITATED CALCIUM CARBONATE COMPOSITIONS FORMED BY SAID PROCESS

#82
20180257032
2018-09-13

SYSTEMS AND METHODS FOR ACID GAS REMOVAL FROM A GASEOUS STREAM

#83
20180251375
2018-09-06

Sulfur dioxide scrubbing system and process for producing potassium products

#84
20180237299
2018-08-23

Method and device for producing sulfuric acid

#85
20180133645
2018-05-17

METHOD FOR CLEANING POLLUTING COMBUSTION FUMES

#86
20180029020
2018-02-01

Supported solid phase catalyst, and preparation method and use thereof

#87
20180010792
2018-01-11

Method and system for improving boiler effectiveness

#88
20180002187
2018-01-04

Process for treating a sulfurous fluid to form gypsum and magnesium carbonate

#89
20170341963
2017-11-30

Methods and systems for remediation of heavy metals in combustion waste

#90
20170239618
2017-08-24

A PROCESS FOR THE OXIDATION OF HYDROGEN SULFIDE TO SULFUR TRIOXIDE WITH SUBSEQUENT SULFUR REMOVAL AND A PLANT FOR CARRYING OUT THE PROCESS

#91
20170225119
2017-08-10

Gas treatment process and apparatus

#92
20170191657
2017-07-06

METHOD OF CLEANING A CARBON DIOXIDE RICH FLUE GAS AND A BOILER SYSTEM

#93
20170190575
2017-07-06

Sulfur dioxide scrubbing system and process for producing potassium products

#94
20170182456
2017-06-29

Aqueous lime slurry, preparation process and uses

#95
20170136409
2017-05-18

Use of clinker kiln dust for gas scrubbing

#96
20170113183
2017-04-27

Process and system for removing sulfur dioxide from flue gas

#97
20170089572
2017-03-30

Process and apparatus for reducing acid plume

#98
20170088467
2017-03-30

Apparatus and method for producing cement through flue gas desulfurization

#99
20170056822
2017-03-02

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

#100
20170050146
2017-02-23

Complexation and removal of mercury from flue gas desulfurization systems

#101
20170044945
2017-02-16

Low Temperature Method and System for Fuel Gas Purification and Utilization Thereof

#102
20170029343
2017-02-02

SULFUR ENHANCED NITROGEN PRODUCTION FROM EMISSION SCRUBBING

#103
20170001143
2017-01-05

Exhaust gas treatment device and waste water treatment method for exhaust gas treatment device

#104
20160367936
2016-12-22

WATER TREATMENT SYSTEM AND METHOD

#105
20160339383
2016-11-24

Desulfurization apparatus and exhaust gas processing system using the same

#106
20160332113
2016-11-17

Marine exhaust gas cleaning system

#107
20160325203
2016-11-10

Spray drying apparatus and air pollution control system

#108
20160317968
2016-11-03

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

#109
20160310888
2016-10-27

Method for removing SOfrom gas using polyol composite solution

#110
20160288050
2016-10-06

Method and apparatus for reagent recovery in a flue gas processing system

#111
20160236143
2016-08-18

Gas purification agent and method of using the same

#112
20160236142
2016-08-18

Desulfurization method for gas containing sulfur oxide and desulfurization apparatus

#113
20160214059
2016-07-28

Systems and methods for removing sulfur dioxide from a gas stream

#114
20160214027
2016-07-28

Spray drying apparatus for dehydrated filtrate from desulfurization waste water, and air pollution control system

#115
20160193565
2016-07-07

Method for removing dust and sulphur oxides from process gases

#116
20160129393
2016-05-12

Method for decreasing an amount of a harmful substance of an off-gas stream formed or used in a thermal treatment of a material

#117
20160082385
2016-03-24

High-efficiency method for removing sulfur and mercury of coal-fired flue gas, and apparatus thereof

#118
20150352486
2015-12-10

Flue gas-treating method and apparatus for treating acidic tail gas by using ammonia process

#119
20150224444
2015-08-13

TREATMENT SYSTEM FOR MERCURY IN FLUE GAS

#120
20150202568
2015-07-23

Systems and methods for acid gas removal from a gaseous stream

#121
20150202567
2015-07-23

Methods for removing contaminants from exhaust gases

#122
20150147233
2015-05-28

Exhaust gas purifying apparatus

#123
20150110698
2015-04-23

Process for sulfur dioxide, hydrochloric acid and mercury mediation

#124
20150037231
2015-02-05

GAS STREAM MULTI-POLLUTANTS CONTROL SYSTEMS AND METHODS

#125
20140346398
2014-11-27

Wet limestone flue gas desulfurization slurry stabilizer and method for using the same

#126
20140248201
2014-09-04

Scrubber system and method

#127
20140241971
2014-08-28

Oxidation system and method for cleaning waste combustion flue gas

#128
20140241970
2014-08-28

Process and apparatus for improving the operation of wet scrubbers

#129
20140193319
2014-07-10

FLUE GAS TREATMENT METHOD

#130
20140178277
2014-06-26

CO2 and SO2 capture method

#131
20140154158
2014-06-05

Apparatus and method for removing sulfur dioxide from flue gases

#132
20140140907
2014-05-22

Aqueous lime slurry, preparation process and uses

#133
20140050645
2014-02-20

Wet scrubber for removing sulfur dioxide from a process gas

#134
20130213231
2013-08-22

Flue gas scrubbing apparatus and methods thereof

#135
20130156664
2013-06-20

Dry sorbent injection during steady-state conditions in dry scrubber

#136
20130115151
2013-05-09

PROCESS FOR THE REMOVAL OF ACID GASES FROM THE AIR AND FROM COMBUSTION GASES FROM BURNERS AND INTERNAL COMBUSTION ENGINES BY MEANS OF ABSORPTION WITH SODIUM HYDROXIDE SOLUTION AND PROCESS FOR OBTAINING SODIUM CARBONATE IN ORDER TO ACQUIRE CARBON CREDITS

#137
20130108535
2013-05-02

Flue gas desulfurization

#138
20130074693
2013-03-28

Water-saving liquid-gas conditioning system

#139
20130004400
2013-01-03

Chilled ammonia based COcapture system with ammonia recovery and processes of use

#140
20120285353
2012-11-15

Process and system for quenching heat, scrubbing, cleaning and neutralizing acidic media present in the flue gas from the firing of fossil fuel

#141
20120275980
2012-11-01

MEANS AND METHODS FOR UTILIZING SODIUM HYDROXIDE

#142
20120148467
2012-06-14

Method for wet flue gas desulfurization

#143
20120049114
2012-03-01

Gas stream multi-pollutants control systems and methods

#144
20120034145
2012-02-09

Treatment method and treatment facilities of exhaust gas

#145
20120031274
2012-02-09

AERATION APPARATUS, SEAWATER FLUE GAS DESULPHURIZATION APPARATUS INCLUDING THE SAME, AND HUMIDIFICATION METHOD FOR AERATION APPARATUS

#146
20120003133
2012-01-05

Air pollution solution to the problem of opacity in coal fired power plant stack emissions

#147
20110259195
2011-10-27

River water utilizing flue gas desulfurization system and humic substance removing method

#148
20110226989
2011-09-22

Gas stream multi-pollutants control systems and methods

#149
20110214535
2011-09-08

System and method of carbon capture and sequestration, environmental remediation, and metals recovery

#150
20110033359
2011-02-10

COOLED NAOH FLUE GAS SCRUBBING PRIOR TO CO2 REMOVAL

#151
20110030593
2011-02-10

Method for desulfurizing a fluid and methods for operating a coal combustion system

#152
20100296993
2010-11-25

Method for the cleaning of off-gas

#153
20100284878
2010-11-11

AIR POLLUTION CONTROL SYSTEM AND METHOD FOR COAL COMBUSTION BOILER

#154
20100254873
2010-10-07

Methods of Use for Lime Residuals

#155
20100219373
2010-09-02

GAS STREAM MULTI-POLLUTANTS CONTROL SYSTEMS AND METHODS

#156
20100139488
2010-06-10

Flue gas scrubbing apparatus and process

#157
20100074828
2010-03-25

Method and Apparatus for the Removal of Carbon Dioxide from a Gas Stream

#158
20100008844
2010-01-14

METHOD FOR PROCESSING STACK GAS EMISSIONS

#159
20080236458
2008-10-02

Method and device for reducing polyhalogenated compounds in incineration plants

#160
20080003156
2008-01-03

Flue gas scrubbing process utilizing biosolids

#161
20070092420
2007-04-26

Blasting process of acidic gases in gaseous effluents

#162
20070014712
2007-01-18

Method for removing impurities accumulated in a scrubbing fluid

#163
20060286011
2006-12-21

Method and an apparatus for removing carbon dioxide from sulphur dioxide containing flue gases

#164
20060245993
2006-11-02

Process for removal of pollutants

#165
20060233688
2006-10-19

Non-catalytic reduction and oxidation process for the removal of NOx

#166
20060117651
2006-06-08

Chemical change agent

#167
20050026008
2005-02-03

Method for processing stack gas emissions

#168
17403711
2022-10-11

Generation of an alkaline liquid and forming a continuous generation alkaline liquid loop

#169
17324230
2022-01-04

Method of scrubbing sulfur dioxide from waste gas to product potassium thiosulfate

#170
17106090
2022-01-04

Crossflow scrubbing method and apparatus to produce a product such as potassium thiosulfate or ammonium thiosulfate

#171
16565196
2020-07-21

Multi-pollutant exhaust treatment using seawater for marine applications

#172
16511168
2022-06-21

Lime hydrate with improved reactivity via additives

#173
16375647
2024-12-17

High reactivity lime hydrate and methods of manufacturing and uses thereof

#174
16216646
2020-06-02

Systems and method for removal of acid gas in a circulating dry scrubber

#175
16194436
2019-08-06

System, method, and apparatus to reduce urban air pollution

#176
16105654
2019-10-15

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

#177
15923031
2018-10-30

Method for controlling aerosol production during absorption in ammonia desulfurization

#178
15618975
2018-10-09

Dust removal and desulfurization of FCC exhaust gas