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In contrast to their thermal counterparts, Catalytic Oxidizers use a catalyst Catalyst
a substance that alters the temperature at which a chemical reaction occurs without itself being consumed in the reaction.
to promote the oxidation reactionOxidation Reaction
Catalytic Oxidizers efficiently react with Hydrocarbons (HCs), Volatile Organic Compounds (VOCs) and oxygen in the air to form naturally occurring carbon dioxide and water vapor (HC+O2+ HEAT H20 + CO2 + exotherm). This oxidation reaction occurs when the air is heated to a sufficiently high temperature, typically 500-600°F (260-315°C).
to occur. Catalytic oxidation requires less than half the heat (500-600°F) needed for thermal oxidation (1,400-1,600°F) and creates an opportunity to substantially reduce fuel expenses and material costs. The addition of a
Recuperative Recuperative
A substance meaning to recover and restore as in recovering hot oxidized process air to pre-heat the incoming process air
(heat exchanger) further reduces the need for supplemental fuel. In many cases, the system requires no supplemental fuel in an operating condition known as "autocatalytic".
The Air-Clear Advantage in Catalytic Oxidation
- Proven Conversion of hydrocarbons or VOCs
Volatile Organic Compounds (VOCs)
a group of organic chemicals with significantly high vapor pressure to exist as a vapor in the air and that react in the atmosphere with nitrogen oxides in the presence of heat and sunlight to form ozone. The term does not include methane and some other compounds determined by the EPA to have negligible photochemical reactivity.
can be as high as 99.9% efficiency with 50% less energy use
- Lower operating temperatures result in lower NOX
NOX - Nitrogen Oxides
The result of photochemical reactions of nitric oxide in ambient air; major component of photochemical smog. Product of combustion from transportation and stationary sources and a major contributor to the formation of ozone in the troposphere and to acid deposition.
emissions, without significant formation of CO.
Carbon Monoxide (CO)
A colorless, odorless, poisonous gas produced by incomplete fossil fuel combustion.
- Air-Clear’s CATOX™ CATALYTIC OXIDIZER Systems are smaller and lighter than their thermal counterparts, requiring a smaller footprint.
- Our flameless catalytic electric heat systems do not generate NOX emissions.
- A variety of catalyst types are available to optimize performance for each particular application. Even halogenated organic compounds can be controlled with the proper catalyst.
- Requirements for MACTMaximum Achievable Control Technology (MACT), BACTBest Available Control Technology (BACT), LAERLowest Achievable Emission Rate (LAER) and RACTReasonably Available Control Technology (RACT) making it the preferred oxidation technology for many applications.
- Air-Clear Catalytic Oxidizers Meet Federal, State and Local EPA Emissions Requirements Catalytic Oxidizers are recognized as the Best Available Control Technology (BACT) and Maximum Control Technology (MACT) for many industrial applications.
- Combination catalytic/thermal systems are available for specialized requirements such as remediation projects such as soil vapor extraction.
- The Air-Clear Catalytic Recuperative Oxidizer is designed to provide reliable stable operation over a wide range of process conditions – flows and VOC loadings - wide variety of processes
Variety of Processes
- AsphaltProcessing
- Saturation
- Coaters
- TankVents
- LoadingStations
- ChemicalProcessing
- SurfaceCoatingandLaminating
- Composites/Fiberglassmanufacturing
- FoodProcessing
- CoffeeRoasting
- Cocoaroasting
- CommercialBakeries
- Wineries/Breweries
- Metalworking
- Pharmaceuticals
- PillCoaters
- CapsuleWashing
- DrugManufacturing
- Printing and Converting
- Flexographic
- Lithographic
- Rotogravure
- ScreenPrinting
- SoilVaporExtraction
- AirStrippers
- SpecialtyApplications
- Textiles
- GasCleaning
- WoodProducts
- MineExhaust
- Ethanol Production
. The Air-Clear Catalytic Oxidizer is also an excellent choice for intermittent ‘ON-OFF’ use.
- Air-Clear’s Custom
Custom
- Our technical sales team is committed to understanding the unique requirements of our customers on every project. They then design a system which is tailored to the customer’s project objectives
- Our technical sales staff has a combination of 90+ years’ of technical expertise and unequaled dedication to customer service that sets Air-Clear apart from the others
design meets your specific environmental and project objectives in the most cost effective way.
- Best Value Featuring primary and secondary heat recovery the Air-Clear Catalytic Oxidizer can often
MAKE YOU MONEY!MAKE YOU MONEY!
- Energy Efficient-Not only reduces fuel required to oxidize Volatile Organic Compounds (VOCs) but actually recovers heat released from the oxidized VOCs…potentially providing a return on your APC investment
- In some cases, a process can save energy, eliminate ozone creating compounds thus improving the company’s carbon footprint as well as cultivating a ‘greener’ corporate image! The following are examples of the how the waste heat can be utilized for process or plant use:
- Reheated air - return to process or as building heat
- Waste heat boiler - to produce process steam or hot water
- Hot oil heater - to produce hot oil for use in the process
- Factory Acceptance Test (FAT)
Factory Acceptance Test (FAT)
- All Air-Clear Systems are designed, manufactured, assembled and tested prior to shipment to ensure trouble-free installation and start-up:
- Major components, such as burner systems, fans, VFD, flow control valves, instrumentation and control programming for process and safety interlocks, are tested at Air Clear's facilities prior to installation at our customer's site.
- When practical, the equipment is totally assembled for verification of fit of components. Shop assembly and testing allow Air-Clear Engineers to verify performance prior to shipment. Any non-conformity is corrected before installation at the customer's site.
– reduces commissioning and start up time by running a thorough diagnostic system check PRIOR to shipment. In house fabrication provides AC with the ability to maintain quality and delivery control at the lowest cost by eliminating Second tier fabricators.
Air Clear Specialty Catalytic products
Cat-Denox™ Selective Catalytic Reduction (SCR) NOx Control System
Air-Clear, Inc. takes pride in assisting companies in diverse industries meet their stringent emission limits with intelligent solutions that easily integrate into existing operations. Air-Clear designs, engineers, fabricates, and services the most advanced air pollution and hazardous waste control equipment available.
Meeting the new, stringent regulations for NOx emissions is of foremost concern for the operators and developers of both power plants and industrial processes. The CAT-DENOX SCR offers the best choice for combining low emission values; high removal efficiencies; and long-term, cost effective compliance. Please contact Air-Clear for more information on how SCR can be successfully and cost-effectively integrated into a comprehensive NOx compliance plan.
The Air-Clear Advantage in SCR Systems:
Flexible Design
- Ammonia source of Anhydrous, Aqueous or Urea.
- Ammonia vaporized using electric heater or heat from exhaust gas.
- Retrofit into limited space.
- Vertical or horizontal gas flow.
- Custom designed to optimize performance and cost effectiveness.
- Wide Temperature Range. (350°F to 1,150°F)
Ultra-Low Emissions
- NOx emissions down to 2 ppm.
- Ammonia slip down to 2 ppm.
- CO reduction up to 99% can be included.
Wide Range of Applications
- Simple Cycle Turbine
- Heat Recover Boilers (HRSG)
- Package Boiler
- Diesel Engine
- Glass Furnace
- Steel Reheat Furnace
- Process Heaters
- Waste Incinerators
- Many Others
Single Source Responsibility
Full Scope of Supply
- Responsibility for Performance Guarantees and Equipment Warranties.
- Computer and Physical Modeling of Process.
- Permitting and CEM Certification Support.
- Turnkey Installation Available.
Air-Clear Dioxin removal catalytic oxidizer
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 A 6,000 SCFM Catalytic Oxidizer on a Federal Government remediation site |
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| A catalyst module. This frame is 2’ x 2’ x 4” Deep. Several of these modules are grouped to accommodate for the flow and required destruction efficiency |
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| small trailer mounted unit is often used for Soil Vapor Extraction and or for pilot testing to determine catalyst performance. |
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| A recuperative catalytic oxidizer gets it’s supplemental heat from electric burners, not a gas burner |
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| A skid mounted recuperative catalytic oxidizer is lowered onto the roof of a Pharmaceutical company |
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| Additional heat is recovered from a catalytic oxidizer and is returned to the dryer . This system had a payback in energy savings of less than a year. |
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| Factory acceptance test is underway on a catalytic oxidizer in Air-Clears Shop |
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| Several catalyst modules are shown grouped in a single support frame |
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