by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound

Industry

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BPERFORMING OPERATIONS TRANSPORTING B01Physical, chemical processing B01DSEPARATION B01D53/00Separation of gases or vapours Recovering vapours of volatile solvents from gases Chemical or biological purification of waste gases

Current Industry

B01D53/501by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Device and method for desulfurizing natural gas
- Patent number 12,110,465
- Issue date Oct 8, 2024
- Knauf Gips KG
- Rolf Hueller
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for hydrotreating a feed stream comprising a biorenewable f...
- Patent number 11,952,541
- Issue date Apr 9, 2024
- UOP LLC
- Donald Eizenga
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Carbon dioxide recovery system and carbon dioxide recovery method
- Patent number 11,612,851
- Issue date Mar 28, 2023
- The Kansai Electric Power Co., Inc.
- Satoshi Kuwano
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Automatic control system for emission indexes of desulfurization de...
- Patent number 11,364,466
- Issue date Jun 21, 2022
- Shang'an Power Plant of Huaneng Power International, Inc.
- Zhijie Liu
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Control of aqueous arsenic, selenium, mercury or other metals from...
- Patent number 11,319,233
- Issue date May 3, 2022
- Steven Feeney
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Exhaust gas treatment method and exhaust gas treatment apparatus
- Patent number 11,198,092
- Issue date Dec 14, 2021
- Chiyoda Corporation
- Kazuya Kumagai
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for cleaning viscose production off-gases and catalysts for...
- Patent number 11,198,093
- Issue date Dec 14, 2021
- HALDOR TOPSØE A/S
- Niklas Bengt Jakobsson
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
Sulfur dioxide and/or sulfurous acid pretreatment with sulfur dioxi...
- Patent number 10,995,314
- Issue date May 4, 2021
- Iogen Corporation
- Brian Foody
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
System and method for removing harmful gas in discharged cleaning s...
- Patent number 10,987,621
- Issue date Apr 27, 2021
- Panasia Co., Ltd.
- Soo-Tae Lee
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method for the removal of oxygen from an industrial gas feed
- Patent number 10,933,372
- Issue date Mar 2, 2021
- Haldor Topsoe A/S
- Kresten Egeblad
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for removing sulfur oxides from gas
- Patent number 10,675,584
- Issue date Jun 9, 2020
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for the purifying of a raw gas stream containing mainly C1-...
- Patent number 10,661,224
- Issue date May 26, 2020
- Haldor Topsoe A/S
- Kresten Egeblad
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Zero-discharge technique for separating sludge and salt from desulf...
- Patent number 10,633,271
- Issue date Apr 28, 2020
- JIANGSU JINGYUAN ENVIRONMENTAL PROTECTION CO., LTD.
- Xianhua Ji
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Process for removing SO2 from flue gases using liquid sorbent injec...
- Patent number 10,617,999
- Issue date Apr 14, 2020
- AECOM Technical Services, Inc.
- Sterling M Gray
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
System and method for reducing liquid discharge from one or more de...
- Patent number 10,589,226
- Issue date Mar 17, 2020
- The Babcock & Wilcox Company
- Michael G Klidas
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Exhaust gas processing system and processing method
- Patent number 10,532,312
- Issue date Jan 14, 2020
- IHI Corporation
- Toshiyuki Naito
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Dust removal and desulfurization of FCC exhaust gas
- Patent number 10,471,383
- Issue date Nov 12, 2019
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Air pollution control system
- Patent number 10,471,382
- Issue date Nov 12, 2019
- Mitsubishi Hitachi Power Systems, Ltd.
- Tsuyoshi Miyachi
- F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
Information Patent Grant
Efficient and energy-saving wastewater evaporation crystallizer
- Patent number 10,472,257
- Issue date Nov 12, 2019
- Sheng Fa Environmental Protection Technology (Xiamen) Co., Ltd.
- Zhongcheng Wan
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for controlling aerosol production during absorption in ammo...
- Patent number 10,449,488
- Issue date Oct 22, 2019
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Composition for treatment of flue gas waste products
- Patent number 10,414,693
- Issue date Sep 17, 2019
- Carmeuse North America
- Dale C. Andrews
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for removing sulfur oxides from gas
- Patent number 10,413,864
- Issue date Sep 17, 2019
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for removing sulfur oxides from gas
- Patent number 10,406,477
- Issue date Sep 10, 2019
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for treating a sulfurous fluid to form gypsum and magnesium...
- Patent number 10,399,862
- Issue date Sep 3, 2019
- Imerys USA, Inc.
- Christopher Paynter
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Wet flue gas desulfurization system with zero waste water liquid di...
- Patent number 10,350,542
- Issue date Jul 16, 2019
- General Electric Company
- Sanjay Kumar Dube
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method for cleaning process off- or engine exhaust gas
- Patent number 10,286,360
- Issue date May 14, 2019
- Haldor Topsoe A/S
- Keld Johansen
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Method for removing mercury from washer suspensions
- Patent number 10,280,104
- Issue date May 7, 2019
- Andritz AG
- Michael Kramer
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Efficient and energy-saving wastewater evaporation crystallizer
- Patent number 10,258,901
- Issue date Apr 16, 2019
- Sheng Fa Environmental Protection Technology (Xiamen) Co., Ltd.
- Zhongcheng Wan
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
System and method for increasing the service life and/or catalytic...
- Patent number 10,213,738
- Issue date Feb 26, 2019
- The Babcock & Wilcox Company
- Mandar R Gadgil
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for removing sulfur oxides from gas
- Patent number 10,207,220
- Issue date Feb 19, 2019
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Ship Based Carbon Capture, Systems and Methods of Use Thereof
- Publication number 20240350972
- Publication date Oct 24, 2024
- Calcarea, Inc.
- Jess Firey Adkins
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESS FOR HYDROTREATING A FEED STREAM COMPRISING A BIORENEWABLE F...
- Publication number 20240271046
- Publication date Aug 15, 2024
- UOP LLC
- Donald Eizenga
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
PROCESS FOR HYDROTREATING A FEED STREAM COMPRISING A BIORENEWABLE F...
- Publication number 20230110965
- Publication date Apr 13, 2023
- UOP LLC
- Donald Eizenga
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
CARBON DIOXIDE RECOVERY SYSTEM AND CARBON DIOXIDE RECOVERY METHOD
- Publication number 20220096995
- Publication date Mar 31, 2022
- The Kansai Electric Power Co., Inc.
- Satoshi KUWANO
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AUTOMATIC CONTROL SYSTEM FOR EMISSION INDEXES OF DESULFURIZATION DE...
- Publication number 20220040633
- Publication date Feb 10, 2022
- SHANG'AN POWER PLANT OF HUANENG POWER INTERNATIONAL INC.
- Zhijie Liu
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
DEVICE AND METHOD FOR DESULFURIZING NATURAL GAS
- Publication number 20210253966
- Publication date Aug 19, 2021
- KNAUF GIPS KG
- Rolf HUELLER
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
System and Method for Removing Harmful Gas in Discharged Cleaning S...
- Publication number 20210146297
- Publication date May 20, 2021
- PANASIA CO., LTD.
- Soo-Tae Lee
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
EXHAUST GAS TREATMENT METHOD AND EXHAUST GAS TREATMENT APPARATUS
- Publication number 20200398218
- Publication date Dec 24, 2020
- CHIYODA CORPORATION
- Kazuya KUMAGAI
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD FOR THE REMOVAL OF OXYGEN FROM AN INDUSTRIAL GAS FEED
- Publication number 20200147547
- Publication date May 14, 2020
- HALDOR TOPSOE A/S
- Kresten Egeblad
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
PROCESS FOR REMOVING SO2 FROM FLUE GASES USING LIQUID SORBENT INJEC...
- Publication number 20200016533
- Publication date Jan 16, 2020
- AECOM Technical Services, Inc.
- Sterling M. Gray
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND APPARATUS FOR REMOVING SULFUR OXIDES FROM GAS
- Publication number 20190374906
- Publication date Dec 12, 2019
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
DUST REMOVAL AND DESULFURIZATION OF FCC EXHAUST GAS
- Publication number 20190282957
- Publication date Sep 19, 2019
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD FOR CONTROLLING AEROSOL PRODUCTION DURING ABSORPTION IN AMMO...
- Publication number 20190270048
- Publication date Sep 5, 2019
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
A METHOD FOR CLEANING VISCOSE PRODUCTION OFF-GASES AND CATALYSTS FO...
- Publication number 20190255484
- Publication date Aug 22, 2019
- HALDOR TOPSOE A/S
- Niklas Bengt Jakobsson
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Application
Continuous Monitoring of Selenium in Water
- Publication number 20190219539
- Publication date Jul 18, 2019
- Southern Research Institute
- Chaoyang HUANG
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
Integrated Wet Scrubbing System
- Publication number 20190201841
- Publication date Jul 4, 2019
- Pacific Green Technologies Inc.
- Kenneth James MCCLELLAND
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Application
BIOLOGICAL TREATMENT OF FLUE GAS DESULFURIZATION BLOWDOWN WATER WIT...
- Publication number 20190143266
- Publication date May 16, 2019
- BL Technologies, Inc.
- Trevor James Dale
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
METHOD AND APPARATUS FOR REMOVING SULFUR OXIDES FROM GAS
- Publication number 20190143265
- Publication date May 16, 2019
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- C01 - INORGANIC CHEMISTRY
Information Patent Application
A PROCESS FOR THE PURIFYING OF A RAW GAS STREAM CONTAINING MAINLY C...
- Publication number 20190126199
- Publication date May 2, 2019
- HALDOR TOPSOE A/S
- Kresten Egeblad
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AMOUNT OF SEAWATER CONTROL DEVICE FOR SCRUBBER, AMOUNT OF SEAWATER...
- Publication number 20190083924
- Publication date Mar 21, 2019
- Fuji Electric Co., Ltd.
- Tadashi KOMATSU
- G05 - CONTROLLING REGULATING
Information Patent Application
METHOD AND APPARATUS FOR REMOVING SULFUR OXIDES FROM GAS
- Publication number 20190046925
- Publication date Feb 14, 2019
- Jiangnan Environmental Protection Group, Inc.
- Jing Luo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
COMPOSITION FOR TREATMENT OF FLUE GAS WASTE PRODUCTS
- Publication number 20190023615
- Publication date Jan 24, 2019
- Carmeuse North America
- Dale C. Andrews
- B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information Patent Application
METHOD AND APPARATUS FOR REMOVING SULFUR OXIDES FROM GAS
- Publication number 20180264402
- Publication date Sep 20, 2018
- Jiangnan Environmental Protection Group Inc.
- Jing Luo
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
A PROCESS FOR TREATING A SULFUROUS FLUID TO FORM GYPSUM AND MAGNESI...
- Publication number 20180002187
- Publication date Jan 4, 2018
- IMERYS USA, INC.
- Christopher PAYNTER
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
METHODS AND SYSTEMS FOR MARINE SULFUR DIOXIDE EMISSION REDUCTION
- Publication number 20170368501
- Publication date Dec 28, 2017
- ExxonMobil Research and Engineering Company
- Stephen C. Codoluto
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD FOR CONVERTING LIME-BASED WET FLUE GAS DESULFURIZATION SYSTE...
- Publication number 20170291137
- Publication date Oct 12, 2017
- AECOM Technical Services, Inc.
- James David Colley
- B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
Information Patent Application
METHOD FOR CLEANING PROCESS OFF- OR ENGINE EXHAUST GAS
- Publication number 20170216771
- Publication date Aug 3, 2017
- Haldor Topsøes A/S
- Keld Johansen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AIR POLLUTION CONTROL SYSTEM AND AIR POLLUTION CONTROL METHOD
- Publication number 20170050144
- Publication date Feb 23, 2017
- MITSUBISHI HITACHI POWER SYSTEMS, LTD.
- Naoyuki Kamiyama
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND SYSTEM FOR GAS SCRUBBING OF AEROSOL-CONTAINING PROCESS G...
- Publication number 20160279563
- Publication date Sep 29, 2016
- RWE Power Aktiengesellschaft
- Tobias GINSBERG
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
EXHAUST GAS PROCESSING SYSTEM AND PROCESSING METHOD
- Publication number 20160059185
- Publication date Mar 3, 2016
- IHI Corporation
- Toshiyuki NAITO
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Device and method for desulfurizing natural gas

Process for hydrotreating a feed stream comprising a biorenewable f...

Carbon dioxide recovery system and carbon dioxide recovery method

Automatic control system for emission indexes of desulfurization de...

Control of aqueous arsenic, selenium, mercury or other metals from...

Exhaust gas treatment method and exhaust gas treatment apparatus

Method for cleaning viscose production off-gases and catalysts for...

Sulfur dioxide and/or sulfurous acid pretreatment with sulfur dioxi...

System and method for removing harmful gas in discharged cleaning s...

Method for the removal of oxygen from an industrial gas feed

Method and apparatus for removing sulfur oxides from gas

Process for the purifying of a raw gas stream containing mainly C1-...

Zero-discharge technique for separating sludge and salt from desulf...

Process for removing SO2 from flue gases using liquid sorbent injec...

System and method for reducing liquid discharge from one or more de...

Exhaust gas processing system and processing method

Dust removal and desulfurization of FCC exhaust gas

Air pollution control system

Efficient and energy-saving wastewater evaporation crystallizer

Method for controlling aerosol production during absorption in ammo...

Composition for treatment of flue gas waste products

Method and apparatus for removing sulfur oxides from gas

Method and apparatus for removing sulfur oxides from gas

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

Wet flue gas desulfurization system with zero waste water liquid di...

Method for cleaning process off- or engine exhaust gas

Method for removing mercury from washer suspensions

Efficient and energy-saving wastewater evaporation crystallizer

System and method for increasing the service life and/or catalytic...

Method and apparatus for removing sulfur oxides from gas

Patents Applicationslast 30 patents

Ship Based Carbon Capture, Systems and Methods of Use Thereof

PROCESS FOR HYDROTREATING A FEED STREAM COMPRISING A BIORENEWABLE F...

PROCESS FOR HYDROTREATING A FEED STREAM COMPRISING A BIORENEWABLE F...

CARBON DIOXIDE RECOVERY SYSTEM AND CARBON DIOXIDE RECOVERY METHOD

AUTOMATIC CONTROL SYSTEM FOR EMISSION INDEXES OF DESULFURIZATION DE...

DEVICE AND METHOD FOR DESULFURIZING NATURAL GAS

System and Method for Removing Harmful Gas in Discharged Cleaning S...

EXHAUST GAS TREATMENT METHOD AND EXHAUST GAS TREATMENT APPARATUS

METHOD FOR THE REMOVAL OF OXYGEN FROM AN INDUSTRIAL GAS FEED

PROCESS FOR REMOVING SO2 FROM FLUE GASES USING LIQUID SORBENT INJEC...

METHOD AND APPARATUS FOR REMOVING SULFUR OXIDES FROM GAS

DUST REMOVAL AND DESULFURIZATION OF FCC EXHAUST GAS

METHOD FOR CONTROLLING AEROSOL PRODUCTION DURING ABSORPTION IN AMMO...

A METHOD FOR CLEANING VISCOSE PRODUCTION OFF-GASES AND CATALYSTS FO...

Continuous Monitoring of Selenium in Water

Integrated Wet Scrubbing System

BIOLOGICAL TREATMENT OF FLUE GAS DESULFURIZATION BLOWDOWN WATER WIT...

METHOD AND APPARATUS FOR REMOVING SULFUR OXIDES FROM GAS

A PROCESS FOR THE PURIFYING OF A RAW GAS STREAM CONTAINING MAINLY C...

AMOUNT OF SEAWATER CONTROL DEVICE FOR SCRUBBER, AMOUNT OF SEAWATER...

METHOD AND APPARATUS FOR REMOVING SULFUR OXIDES FROM GAS

COMPOSITION FOR TREATMENT OF FLUE GAS WASTE PRODUCTS

METHOD AND APPARATUS FOR REMOVING SULFUR OXIDES FROM GAS

A PROCESS FOR TREATING A SULFUROUS FLUID TO FORM GYPSUM AND MAGNESI...

METHODS AND SYSTEMS FOR MARINE SULFUR DIOXIDE EMISSION REDUCTION

METHOD FOR CONVERTING LIME-BASED WET FLUE GAS DESULFURIZATION SYSTE...

METHOD FOR CLEANING PROCESS OFF- OR ENGINE EXHAUST GAS

AIR POLLUTION CONTROL SYSTEM AND AIR POLLUTION CONTROL METHOD

METHOD AND SYSTEM FOR GAS SCRUBBING OF AEROSOL-CONTAINING PROCESS G...

EXHAUST GAS PROCESSING SYSTEM AND PROCESSING METHOD