chemical air filter Applications

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Industrial air pollution control for the chemical and petrochemical industry

by Chemisch Thermische Prozesstechnik GmbH / CTP Air Pollution Control     based in Graz, AUSTRIA

CTP systems can be found in every leading production company: thanks to the experience and the expertise developed in partnership with our customers for processes with inconsistent waste gas volumes; varying concentrations of organic components; gases contaminated with aerosols. CTP has installed systems for waste gas streams ranging from 1,000 to 200,000 Nm³/h. CTP supplies this industry with mainly catalytic systems, regenerative thermal oxidisers (RTO) and adsorbers. As the flue gases in this industry are often explosive mixtures, CTP systems have to be completed with special safety conduits and filters to help reduce hazards during continued operation.

Air quality monitoring

by Metrohm AG     based in Herisau, SWITZERLAND

To estimate the effects of aerosols on health and climate, it is essential to know their chemical composition. Sampling is done using two different types of aerosol collector. The first type are filter collectors that are based on the deposition of suspended particles on surfaces; the second type are powerful aerosol collectors.

Applications and Air Pollutants Removed for Wastewater Treatment Operations

by Bionomic Industries Inc.     based in Mahwah, NEW JERSEY (USA)

For industrial and municipal treatment plants; Chemical scrubbers, biological towers and adsorption systems to remove hydrogen sulfide, mercaptans, other organic sulfur compounds and ammonia from digesters, pump stations, ponds, grit and screening works, sludge filter presses and dryers. Special Wet Electrostatic Precipitator for sewage sludge incinerators. Stripping ammonia and other volatile compounds. Decarbonization removal of carbon dioxide from wastewater.

Biomass Furnace Dust Filtration

by Zhejiang Grace Envirotech Co., Ltd     based in XIAOSHAN, CHINA

Application: PPS (Ryton) Filter Bags are widely used in coal-fired boilers, waste incinerators, coking furnaces, kiln furnaces,Biomass Furnace ,chemical dry process of flue gas cleaning processes, also using, carbon black, powder collection, pneumatic conveying, cement industry, and more. When due to chemical attack and hydrolysis causes, Aramid cannot be used, PPS (Ryton) Filter Bag can be substituted.

Sulfide Oxidation with Hydrogen Peroxide (H2O2)

by USP Technologies     based in Atlanta, GEORGIA (US) (USA)

Sulfide Odor Control Sulfide is found throughout the environment as a result of both natural and industrial processes. Most sulfide found in nature was produced biologically (under anaerobic conditions) and occurs as free hydrogen sulfide (H2S) - characterized by its rotten egg odor. We are most likely to encounter biogenic H2S in sour groundwaters, swamps and marshes, natural gas deposits, and sewage collection/treatment systems. Manmade sources of H2S typically occur as a result of natural materials containing sulfur (e.g., coal, gas and oil) being refined into industrial products. For a variety of reasons - aesthetics (odor control), health (toxicity), ecological (oxygen depletion in receiving waters), and economic (corrosion of equipment and infrastructure) - sulfide laden wastewaters must be handled carefully and remediated before they can be released to the environment. Typical discharge limits for sulfide are < 1 mg/L. Sulfide Treatment Alternatives There are dozens of alternatives for treating sulfide laden waters, ranging from simple air stripping (for the low levels present in groundwaters) to elaborate sulfur recovery plants (used to treat several tons per day at refineries and coal burning power plants). There are processes based on biology (using compost filters, scrubbing media, or inhibition/disinfection), chemistry (oxidation, precipitation, absorption, and combination), and physics (adsorption, volatilization, and incineration). Each process occupies a niche which is often defined by the scale and continuity of treatment, whether the sulfide is in solution or is a gas, the concentration of sulfide involved, and the disposition of the sulfide containing medium. However, for reasons relating to convenience and flexibility, chemical oxidation (using hydrogen peroxide) continues to grow in its scope of application. Treatment with Hydrogen Peroxide While other peroxygens such as permonosulfuric (Caro’s) acid, peracetic acid, and persulfates will oxidize sulfide, their use for this application is overkill. Hydrogen peroxide (H2O2) is considerably simpler and more cost-effective. H2O2 may control sulfides in two ways, depending on the application: Prevention - by providing dissolved oxygen which inhibits the septic conditions which lead to biological sulfide formation; and Destruction - by oxidizing sulfide to elemental sulfur or sulfate ion.

Air monitoring for laboratories

by GE Healthcare UK Limited     based in Little Chalfont, UNITED KINGDOM

Many of the air quality analyses can be performed with standard laboratory consumables, such as traditional filter papers. However, some analyses require materials with specific features, for example filters with low metal levels.

Common air monitoring applications include:

  • Air quality testing of ambient environment and emissions. Includes particulate monitoring methods such as PM2.5 and PM10, and chemical analysis such as heavy metals determination.
  • Asbestos sampling and analysis

Odour removal units for professional kitchen ventilation

by Dimtech S.A     based in Keratsini, GREECE

Our company has odour removal units for professional kitchen ventilation, for grills and food preparation areas generally. The operation of the unit is based on chemical or electrostatic filters or a combination of both. The kitchen unit KDSA (with chemical filters) series, neutralizes particles, soot, odors, grease and moisture completely. KDSA units for kitchen ventilation are installed in the cooker hood and are connected with the kitchen areas that produce smoke or where there is smoke and odors such as in kitchen funnels or in washing facilities. The air stream in the deodorizer passes through a set of filters where particles, grease, soot and odors are removed.

Painting & Coating

by DiversiTech     based in Montreal, QUEBEC (CANADA)

Paint fumes are Unbreathable. Spray Painting VOCs and Powder Coating dust are both harmful pollutants which are produced during painting operations. The volatile organic compounds (VOCs) emitted from paint can cause respiratory issues and require proper ventilation to remove harmful gasses from the work area. Powder Coating lines and spray painting produce dangerous fumes and dusts which need to be filtered or exhausted outside your facility. Industrial coatings and chemicals can produce toxic VOCs and foul odors which can effect worker`s health and reduce productivity. Some of the most common coatings are polymers which include polyurethane, epoxy and moisture-cure urethane. Many different industries required the use of glues, adhesives, solvents and different chemical agents in their production process, but are unsure of the best way to handle this nuisance. Exhausting fumes outside may be an option when VOCs are extremely dangerous and odorous but companies must also comply with EPA guidelines which regulate which gases can be emitted. In cold climates and in air-conditioned facilities, capturing, filtering and recirculating fumes can provide huge energy savings preventing costly heat loss and energy intensive air makeup systems. Utilizing activated carbon granules can allow operators to filter VOCs and odors from painting and cutting applications. Different quantities and types of carbon modules are required depending upon the contaminant. Contact Diversitech with an MSDS sheet detailing your chemical`s characteristics for an evaluation of your workplace air quality problem.?

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