Flow Air
Flow Air
Air Cleaning by Crossflow Wet Scrubbers
Oleg Systems Co. is a designer of industrial airscrubbers for dust / fume collection and air cleaning. Wet type dust collectors / air scrubbers are available in numerous designs utilizing a number of principles and featuring wide variation in effectiveness, initial cost, operating and maintenance expense, space, arrangements and material of construction.
Wet type dust collectors are liquid (usually, but not necessarily, water) to capture and separate particulate matter (dust, mist, and fumes) from a gas stream. Some scrubbers operate by spraying the scrubbing liquid into the contaminated air. Others bubble air through the scrubbing liquid. In addition, many gybrid wet scrubbing designs exist.
Oleg Systems Crossflow Packed Bed Scrubbers are used in environmental control applications which require contaminant gas absorption with or without particle removal, as well as in odor control applications. The process involves a scrubbing liquid flowing vertically through the scrubber mixing chamber perpendicular to the contaminated air stream. The mixing chamber contains packing material which maximizes contact between the two streams, facilitating contaminant absorption of the scrubbing liquid before falling into the collector below.
For applications involving complex contaminants in gas stream Oleg Systems offers crossflow air scrubber configuration with multiple packing bed sections, each designed to capture a particular contaminant. The chemical dosing process of each bed is isolated by incorporating a separate mist eliminator and sump within each section. A multiple bed counter current gas scrubber requires a separate vessel for each bed section to avoid any carry over between sections. High density random packing, in conjunction with mesh pads and mist eleminators can be configured to further prevent mist carry over.
The company also offers crossflow scrubber design incorporating an ionizing section to more effectively eliminate sub-micron and non-polar particulates by charging arriving contaminant molecules before they enter the packed bed sections. The charged particles are attracted to the wetted packing media, greatly increasing absorption and removal.
Countercurrent packed bed air scrubbers involve a downward flowing liquid, either water or chemical solvent, impinging upon an upward flowing contaminated air stream. Contaminants are absorbed by the scrubbing liquid which collects in the sump. This type of wet scrubber is used to achieve gas absorption, with or without particle removal, using the principle of mass transfer. Packing material, as always, is used to maximize the wetted surface contact between the opposing streams.
Particle sizes, which can be controlled by a wet scrubber, range from 0.3 to 50 microns or a bit larger. Wet collectors may be used for the collection of most particulates from industrial process gas streams where economics allow for collection of the material in a wet state.
Because the liquid and gas streams in cross flow air scrubber do not directly impinge upon each other, this design is less suceptible to clogging, thus minimizing the required maintenance. Clossflow wet scrubbers also use less liquid compared to counter current scrubbers and require less pumping capacity. Consequently, clossflow air scrubber energy consumption costs are lower than for comparable counter current scrubber. Horizontal wet scrubbers are ideal for height restricted installations where height is limited, while counter current air scrubbers are suitable for applications where floor space is limited and height is not.
Advantage of wet collectors over dry type dust collectors include:
* Constant operating pressure;
* No secondary dust sources;
* Little spare parts requirements;
* Ability to collect both gases and particulates;
* Ability to handle high temperature and high humidity gas streams, as well as to reduce the possibility of fire or explosion;
* Reasonably small space requirements for air scrubbers;
* Possibility to continuously collect sticky and hygroscopic solids without becoming fouled.
All Canadian Air Systems air scrubbers use the following principles:
- high liquid-to-gas ration;
- intimate contact between the liquid and dust particles, which may be accomplished by formation of large numbers of small liquid droplets or by breaking up the gas flow into many small bubbles that are driven through a bath of scrubbing liquid, to increase the chances that contaminants will be wetted and collected;
- abrupt transition from dry to wet zones to avoid particle buildup where the dry gas enters the collector.
For additional information please refer to http://www.olegsystems.com/inquiry/Index.html.
Oleg Chetchel
Industrial Process Engineer
Oleg Systems Co.
http://www.olegsystems.com/damper/Index.html
http://www.olegsystems.com/scrubber/Index.html
About the Author
Oleg Chetchel
Ventilation Equipment Designer
Tenderall Fan Co.
http://tenderall.com
Is it a good idea to buy a used mass flow air sensor vs buying a new one?
dealership is trying to charge me $820 is replace a my mass flow air sensor in my 2002 Altima. $500 of that $820 is for the part alone. I found 2 senors. One is used and the other is an aftermarket. I found a guy to replace it for me, now all I have to do is buy the replacement part. The used and the after market are the same price too
If we base on your statements, I believe it is still wiser to purchase a brand new part than the used stuff (which is mass flow air sensor in your case) knowing that they share the same price. You are exposing your Altima at any possible broad extent of various driveability issues such as misfiring & poor acceleration. These are some potential risks that should be avoided.
Auto Repair: Mass Air Flow Sensors - Testing and Replacing (1 of 2)
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1996 DEVILLE MAF MASS AIR FLOW PT# AFHSOM-04 #5704 $34.19 |
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97 98 FORD EXPEDITION AIR FLOW METER WITH SENSOR $55.00 |
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MAF Mass Air Flow Sensor Meter Hyundai Accent 00-05 1.5 $104.95 |
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MAF Mass Air Flow Sensor Meter Hyundai Accent 1.3L 1.5L $104.95 |
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MAF Mass Air Flow Sensor Meter Hyundai Accent 2000-2005 $104.95 |
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MAF Mass Air Flow Sensor Meter Hyundai Accent 2001 2002 $104.95 |
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MAF Mass Air Flow Sensor Meter Hyundai Accent 2003 2004 $104.95 |
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928 PorscheOEM Air Flow Meter new still in original box $199.00 |
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MAF Mass Air Flow Sensor Meter Nissan Altima 02 03 3.5L $129.99 |
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MAF Mass Air Flow Sensor Meter Nissan Altima 2002 2.5 $129.99 |
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MAF Mass Air Flow Sensor Meter Nissan Altima 2002 2.5L $129.99 |
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MAF Mass Air Flow Sensor Meter Nissan Altima 2002-2003 $129.99 |
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MAF Mass Air Flow Sensor Meter Nissan Sentra 2000-2003 $129.99 |
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MAF Mass Air Flow Sensor Meter Nissan Sentra 2001-2002 $129.99 |
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95 96 LINCOLN MARK VIII MASS AIR FLOW SENSOR OEM (at1) $55.00 |
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2000 - 2001 Maxima/Sentra/I30/G20 Air Flow Meter New $84.99 |
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2000 -2002 Nissan Sentra Air Flow Meter New $70.99 |
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The First Years - Air-Flow Sleep Positioner $11.95 The Air Flow Sleep Positioner helps keep baby on her back or her side, the positions recommended by the American Academy of Pediatrics to reduce the risk of SIDS. Two rounded frames providing support are hollow, allowing for the free flow of air. Adjust the self-fastener strips so that the positioner is just wide enough for baby to lie in. Place it in the crib, and lay baby down on her back o... |
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Flush Mount Heating and Air Conditioning Booster Fan, Brown $32.86 Depending on the season, lowering or raising your thermostat just 4° can cost an additional $35 to $50 per month. Running the Heating and Air Conditioning Booster over the same period only costs about 60 cents! Unlike a traditional booster that simply mounts over your existing wall or floor vent, this device has been designed to replace a standard 4" x 10" vent for a professional flush mount fini... |
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Leachco Preggle Comfort Air-Flow Body Pillow, Ivory/Khaki $39.97 The comfort possibilities with this unique body pillow are virtually endless. The Preggle was designed to provide targeted relief to the areas you need it most, while keeping you cool and comfy throughout the night with its patent pending "comfort air-flow" features. Its clever open ventilation system and adjustment bands ensure maximum comfort and support you expect from a body pillow without cre... |
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A Celtic Family Christmas $16.89 A Celtic Family Christmas features never-before-released songs of peace and joy by Celtic Woman and the High Kings. Track listing: 1. Celtic Woman - Carol of the Bells 2. Celtic Woman - The First Noel 3. Celtic Woman - In The Bleak Midwinter 4. Celtic Woman - Jesu Joy of Man's Desiring 5. The High Kings - Driving Home for Christmas 6. The High Kings - Santa Claus is Coming to Town... |
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Explaining Aerodynamics: How Airplanes Fly (1968) $9.99 Airplanes alight in the highways of the sky, transforming barriers into opportunities. We do not often think about how we get from one place to another, but flying is a complex task. Training consists of practical learning, but also includes lessons on aerodynamics. What is a pilot without the knowledge of how a plane stays in the air? "How Airplanes Fly," breaks down aerodynamics explaining how t... |
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Uncomplicating The Heat Pump: Refrigeration and Air Flow Systems By Jim Johnson $79.95 A DVD/CD HVACR Technician Training Package. This 90-minute video training program is designed to both eliminate the mystery behind heat pump refrigeration systems and explain charging procedures. Written and presented by well-known author and instructor Jim Johnson, it is appropriate for both new and experienced technicians. Jim shows cutaways to explain the fundamentals, then shows how to access ... |
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Oro Gold 24k Collagen & Seaweed Mask $17.50 Our Unique Collagen & Seaweed Mask contains 24 Karat gold and helps to restore lost aging skin's volume. What is collagen? Collagen: "A protein that is produced by the body. When the amount of collagen in your body decreases, signs of aging become apparent as wrinkles and fine lines." While the collagen fills the facial fine lines the Seaweed stimulates and improves blood and lymph circulation, re... |
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Crane Hs-3161 Drop Shape Humidifier Filter $7.95 HS-3161 Features: -Humidifier filter drop shape. -Demineralization filter this replacement filter cartridge. -Use for humidifiers EE-5301, EE-5301G and EE-5301P. -Filters water and eliminates dust. -Extends lifetime of the humidifier. -No assembly required. -Overall dimensions: 5'' H x 3'' W x 1.8'' D.... |
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