How to Select Air Scrubbers, Wet Scrubbers, and Gas Scrubbers                        Image Credit: CCI Thermal Technologies Inc. | Anguil Environmental Systems, Inc.   Scrubbers are air pollution control devices that use liquid to remove particulate matter or gases from an industrial exhaust or flue gas stream. This atomized liquid (typically water) entrains...
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Q & A on Air Scrubbers, Wet Scrubbers, and Gas Scrubbers

We asked our users for their input on Air Scrubbers, Wet Scrubbers, and Gas Scrubbers. Here are the results of 65 users familiar with Air Scrubbers, Wet Scrubbers, and Gas Scrubbers.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice |

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing air scrubber, wet scrubber and gas scrubber design?
8 answers
Answers:
Wet Electrostatic Precipitator can help remove submicron range particulate viz., Fluid Catalytic Cracking unit(FCCU), Tar precipitation in Steel industries(After coke oven furnace), sulphuric acid mist dust separation in non-ferrous industry.
~Unmesh Chandran, Process Engineer, Pune, Maharastra, India
Use of better water movement inside the cabinets, plastic better blower packages, pre-filter designs to lower maintenance.
~Jeff Z, Engineer, Lincoln, NE
More efficiency packing, more active treatment solution.
~Francis Chuah, Engineer, Kl, MAlaysia
The size of scrubbing system maintaining the efficiency.
~JOSE RIVERA, Marketing/Sales, QUERETARO, MEXICO
Combination with wet electrostatic precipitator.
~EHS manager, Malacky, Slovakia
At present CFD (computational fluid dynamics).
~Mike M, Engineer, Florence, MA
Automation and CEM System
~Marketing/Sales, Samutprakarn, Thailand
Energy efficiency
~Engineering, Consulting, Johannesburg, South Africa

Q:
From your perspective, which companies are creating the most innovative air scrubbers, wet scrubbers and gas scrubbers?
8 answers
Answers:
Some the following companies have significant market presence & contributing immensely towards scrubber innovation:- 1, Airpol Incorporation., USA 2, BELTRAN Technology Inc., USA. 3, Hammon Reserch Cottrel., USA 4, Lodge Korea Cottrell., UK 5, Babcock & Wilcox Inc., USA. 6, Hitachi Plant Technologies., Japan. 7, Mitsubishi Heavy Industries., Japan. 8, Hamworthy Combustion., Italy. 9, GEA Bishoff., Gmbh, Germany. 10, Bionomics Inc., USA. 11, Trimer Inc., USA (Cloud Chamber Scrubber)
~Unmesh Chandran, Process Engineer, Pune, Maharastra, India
In my field the German Fume Hood manufacturers, Waldner and Kotterman, Salare in the USA.
~JOSE RIVERA, Marketing/Sales, QUERETARO, MEXICO
EnviroAir Inc., Pollution Systems.
~Cezary R, Engineering Consultant, Nieszawa, Poland
Scheuch, EWK (both in Europe)
~EHS manager, Malacky, Slovakia
Centrotherm Edwards Atlas
~Engineering Consultant, Heverlee, Belgium
Kimre, Filter 1, TriMer
~Jeff Z, Engineer, Lincoln, NE
Envipure
~Francis Chuah, Engineer, Kl, MAlaysia
Nederman
~Marketing/Sales, Samutprakarn, Thailand

Applications and UseTop

Q:
What are some of the applications you have used air scrubbers, wet scrubbers and gas scrubbers for?
18 answers
Answers:
Self is employed in the Design & Innovation group of Air Pollution Control division of Thermax, India & come across many an application involving use of wet, semi dry & dry scrubber for an multitude of Industrial application Viz., Glass furnace (upstream of Electrostatic Precipitator) , Power utilities to scrub Sulphur dioxide from flue gases on Boiler combusting Coal (down stream of Electrostatic Precipitator) , Non ferrous Industrial processes viz., Zinc, Lead & Copper roasting process (down stream of Pierce Smith convertor) , Petroleum industries after 'Claus' process for removal of Sulphur dioxide /Hydrogen sulphide (sweetening of crude Oil) etc.
~Unmesh Chandran, Process Engineer, Pune, Maharastra, India
Aluminum and titanium grinding - wet scrubbers heavy grinding with a lot of sparks
~Jeff Z, Engineer, Lincoln, NE
Flue gas desulphurization, refinery emissions, particulate removal, odor removal.
~Mike M, Engineer, Florence, MA
Cleaning of spent gas from process. Removing solids from outlet gases.
~Cezary R, Engineering Consultant, Nieszawa, Poland
Semi conductor Municipal waste water Chlorine Ammonia HcL
~General Corporate Mgmt, Escondido, CA
Cleaning of waste gases in particleboard production.
~EHS manager, Malacky, Slovakia
Wet Scrubber for Surface Treatment, Welding Station
~Marketing/Sales, Samutprakarn, Thailand
Wet scrubber for HF, NOX, HCN gases treatment.
~Francis Chuah, Engineer, Kl, MAlaysia
Odor control in Sewerage treatment plants.
~Engineering, Design, Abu Dhabi, United Arab Emirates
Biogas to natural gas equivalent 98%CH4
~Technical Support/Services, Hampton, Australia
Dust extraction and gas cleaning.
~Engineering, Consulting, Johannesburg, South Africa
Fume Hood exhaust systems
~JOSE RIVERA, Marketing/Sales, QUERETARO, MEXICO
Epitaxy, MOCVD, ALD
~Engineering Consultant, Heverlee, Belgium
Deodorization
~Engineering, Process/Production, Izmir, Turkey
Wet scrubber
~General Corporate Mgmt, ISTANBUL, Turkey
VOC removal
~Stephen L, Maintenance Engineer, Atchison, KS
Furnaces
~Engineering, Other, Richardsbay, South Africa
Mining
~Engineering, Faculty/Staff/Student, Winnipeg, Canada

Q:
Please share with us any “non-standard” applications that air scrubbers, wet scrubbers and gas scrubbers have been used for.
4 answers
Answers:
Clean air for exhaust fumes in laboratories located in the middle of populated areas; the standard applications have been in mining companies.
~JOSE RIVERA, Marketing/Sales, QUERETARO, MEXICO
Welding smoke and fumes with final after filters - spot welding and other projects with a lot of fire issues.
~Jeff Z, Engineer, Lincoln, NE
Removing the smell of coffee from the exhaust of a coffee roaster.
~Mike M, Engineer, Florence, MA
Catalytic removing of organics from out gases.
~Cezary R, Engineering Consultant, Nieszawa, Poland

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of air scrubbers, wet scrubbers and gas scrubbers?
6 answers
Answers:
Corrosion of the equipment & machinery are the biggest challenges faced by Industries & ideal choice is selection of material Viz., Stainless steel(SS304, 316L) , Chrome , molybdenum alloy(AL6XN), or nickel grade alloys. Down stream water treatment & disposal in lake or rivers to sustain aquatic & amphibious life form.
~Unmesh Chandran, Process Engineer, Pune, Maharastra, India
Under sized air flow, no extra fan during shut down and hydrogen build up for fire (aluminum dust applications).
~Jeff Z, Engineer, Lincoln, NE
Yes, forgetting crystallizing of salts on nozzles.
~Cezary R, Engineering Consultant, Nieszawa, Poland
Residue air pollutant, Filter unit was burn etc.
~Marketing/Sales, Samutprakarn, Thailand
Excess of contamination to the atmosphere.
~JOSE RIVERA, Marketing/Sales, QUERETARO, MEXICO
Explosion
~Engineering Consultant, Heverlee, Belgium

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
10 answers
Answers:
Apart from particulate & Gaseous scrubbing this product should also contain sub-micron range particulate matter to comply PM2.5 emission norms as well abate mercury pollution.
~Unmesh Chandran, Process Engineer, Pune, Maharastra, India
Standardized all scrubber design and size for mass production and ease delivery.
~Francis Chuah, Engineer, Kl, MAlaysia
Easy Installation, High Performance and Efficiency, Easy maintenance and care
~Marketing/Sales, Samutprakarn, Thailand
Corrosion resistant, simple sludge removal and maintenance overall.
~Jeff Z, Engineer, Lincoln, NE
100% removal, low maintenance, cost effective
~Mike M, Engineer, Florence, MA
Maintenance free, high efficiency, low energy
~Engineering, Consulting, Johannesburg, South Africa
Small scrubbers to be adapted to Fume Hoods.
~JOSE RIVERA, Marketing/Sales, QUERETARO, MEXICO
Higher efficiency of removal of VOC.
~EHS manager, Malacky, Slovakia
Minimum washing liquid lost.
~Cezary R, Engineering Consultant, Nieszawa, Poland
Efficiency
~Technical Support/Services, Hampton, Australia

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using air scrubbers, wet scrubbers and gas scrubbers?
5 answers
Answers:
Target the Gaseous & Particulate pollutants you wish to contain or abate & then select the chemicals required for precipitation, Material of construction, availability of water, setting up water treatment plant & perhaps byproduct recovery viz., Gyspum for Cement industries, Sulphuric Acid production from claus process from industries like Coal chemical plant, Non-ferrous plant, Glass furnace et.al.
~Unmesh Chandran, Process Engineer, Pune, Maharastra, India
Ensure the treatment solution selected is suitable, some chemicals are too active and have already activate and transform in storage stage, it will lower down scrubbing efficiency.
~Francis Chuah, Engineer, Kl, MAlaysia
Pay close attention to what the application is, service and the overall airflow/static pressure in the ducting. Don't let particles settle out in the ducting.
~Jeff Z, Engineer, Lincoln, NE
Each one must be evaluated on a case by case basis.
~Mike M, Engineer, Florence, MA
Scrubbers will become mandatory in many areas.
~JOSE RIVERA, Marketing/Sales, QUERETARO, MEXICO

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of air scrubbers, wet scrubbers and gas scrubbers?
6 answers
Answers:
Concentration of Chemicals to be used to precipitate & optimize gaseous pollutants, Material of construction, Products to be used as stand alone or a downstream wet ESP requirement.
~Unmesh Chandran, Process Engineer, Pune, Maharastra, India
The solution that they used should be provided by a certified company who has more experience for this system.
~Marketing/Sales, Samutprakarn, Thailand
Make sure that the capacity of the scrubber will serve your needs if air output increases in the future.
~Mike M, Engineer, Florence, MA
To think only in big scrubbers, there is a niche for the small ones
~JOSE RIVERA, Marketing/Sales, QUERETARO, MEXICO
Wet scrubber will use a lot of water, water cost is concern
~Francis Chuah, Engineer, Kl, MAlaysia
I believe that people involved are clever enough.
~Cezary R, Engineering Consultant, Nieszawa, Poland


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