Applications Sectors

CHEMICAL FIBERS

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
Heat setting / thermo-fixing The fabrics (polyester, acrylic, cotton, lycra, nylon...) pass through a curing process-heating in an oven, dryer or tenterframe. A result is vaporization of the organic compounds (VOCs) present on the fibers.
  • Volatile Organic Compounds (which take the form of visible smoke and invisible odors)
  • Tiny solid and liquid particles of VOCs (size <1 micron)
  • Oli mist
B03 - FIBER WIND B02 - WESP
Carpets The fibers pass through Suessen Yarn Heat setter lines. A result is vaporization of the oil present on the fibers.
  • Tiny liquid particles of oil (VOCs) with size less than 10 microns.
B03 - FIBER WIND B02 - WESP
Fabrics coating The fabrics pass through a coating equipment where the fibers are covered by an organic liner. Then the material is heat-fixed by a heating process. A result is vaporization of the solvents originally present in the organic liners.
  • High concentration of organic solvents (usually invisible)
B03 - FIBER WIND B02 - WESP
Printing and finishing The fabrics are printed and coated and then pass through a heat setting machine. A result is vaporization of the organic compounds (VOCs) naturally present on the fibers and of the printing additive.
  • Tiny solid and liquid particles of VOCs (size <1 micron)
  • Oil mist
  • Ammonia (NH3), aldeydes, ammines, ...
B03 - FIBER WIND B02 - WESP
Plasticizer In the manufacture of plastics and resin products plasticizer vapors condense in the air causing hydrocarbon emissions and dense plumes. Organic sub-micron mists. DOP. B03 - FIBER WIND - R03 B02 - WESP - R05

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
Nylon wire production The nylon 6 or 6.6 wire is lubrificated in a oil spray chamber kept vented by a inducted ventilation. The smaller particles of residual oil are picked up by the air stream.
  • Tiny liquid particles of oil (VOCs) with size less than 10 microns.
B03 - FIBER WIND B02 - WESP
Polyester chips production (PET) The esterification of terephthalic acid with ethylene glycol produce ethylene terephthalate but also acetaldeyde as secondary product. The vents of the reactors contains acetaldeyde that has to be removed from the air stream.
  • Air with Acetaldeyde
B03 - FIBER WIND B02 - WESP

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
PE mattress production A poliethylene high density film pass through a continuous oven to produce the expansion of the PE. The chemical additive in the PE expand inside the film and are sucted by the induction fan.
  • Volatile Organic Compounds (visible blue smoke and invisible odors) (Aldeyde, Fenol, Acetofenone, ..).
  • Tiny solid particles of organic compounds (size <1 micron)
  • Ammonia (NH3)
B03 - FIBER WIND B02 - WESP
Polyurethan welding operation Vaporization of organic compounds
  • Solid and liquid particles of VOCs
B03 - FIBER WIND B02 - WESP
Rubber molding operation Vaporization of organic compounds
  • Solid and liquid particles of VOCs
B03 - FIBER WIND B02 - WESP
PTFE gasket and components production The PTFE is extruded or melted in preformed shape inside batch ovens. In other section the PTFE is mixed e dosed with n-ottane solvent. All the working zone are vented and sucted by an ID fan.
  • Air stream with solvents (n-ottane) and residual of PTFE.
 

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
Grappa production The residual of the vinass is dryed in a rotary dryer. Evaporated water stream drags behind a big quantity of particulate and organic material.
  • Dust less than 50 microns.
  • Volatile Organic Compounds.
B03 - FIBER WIND B02 - WESP
Olive oil production Same of the grappa production
  • Dust less than 50 microns.
  • Volatile Organic Compounds.
B03 - FIBER WIND B02 - WESP

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Alluminium refining and process
  • Smoke AlCl3 fumes HCl SO2 SO3 HF Carbon particles Al2O3 fumes Fluoride fumes
 
  Car shredding
  • Oil mist, dust
B02 - WESP
Metal smelting Metal Smelting Primary and second metal production usually involves smelting of the ore in a reduction furnace. Sulfur oxides generated during this operation are generally cleaned and taken to the acid plant if the concentration is above 5 percent. Weak gases are generally scrubbed using lime/limestone slurry processes and emissions are collected using a baghouse. However, in some applications where caustic/soda ash or Ammonia scrubbing is used and/or where appreciable quantity of acid mist is present, Tubular precipitators are used to control emissions. These precipitators are operated wet. Particulate loadings of about 0.3 to 0.4 grain/CF are common and heavy moisture load is usually present. Corrosive conditions dictate use of plastic or special alloy construction.
  • Mists
B02 - WESP
  Electroplating
  • Acid mist
 
Scarfing Particulate loadings of 1 grain/CF and greater are commonly encountered. The particle size is mainly in the sub-micron to 2 micron range. The exhaust stream coming from the scarfer is generally completely saturated. Wet Tubular precipitators are used in this application. Collection efficiency of 99 percent and higher are required to meet the opacity regulations. ASTM 304 L stainless steel construction is used. The collected particulates are very easy to wash off. Tubular precipitators used on this application have very high collection efficiencies even at high throughput velocity.   B02 - WESP - R05
Sintering Sintering is generally used to beneficiate ores by a high temperature agglomeration process. Sintering process transforms raw ore into a product which is uniform in size, has not many fines, is convenient to handle, and has better chemistry. Particulate loading from these processes range from 0.1 to 0.5 grain/CF. Very high amounts of condensable organic matter is also present (0.05 to 0.3 grain/CF). Sintering machines using recycle draft and strand cooling have lower emissions and lower exhaust volumes. Tubular units using stainless steel construction have been used in this application.   B02 - WESP - R05
  Galvanizing
  • Fumes, Mist
 
  Bronze and brass melting
  • Dust, metallic fumes
 
  Coke plants
  • Tar, dust, smoke
 
  Zinc galvanizing
  • Oil mist, fumes of NH4Cl and ZnO
 
Zirconium Calcining Zirconium and hafnium are used in the nuclear industry for the fuel rod casings. These metals are immune to corrosion attack from most of the chemicals and can withstand very high temperatures. Neutrons pass through Zirconium, whereas they are absorbed in Hafnium. Thus the nuclear reaction can be controlled by use of Zirconium and Hafnium tubes. Zirconium and Hafnium are mined as Zircon sand. The ore is chlorinated, selectively precipitated, passed through a separation operation, chlorinated again, and then reduced. The exhaust from the calciner contains Zirconium oxide, Hafnium oxide, a trace amount of elemental sulfur, some chlorides and sulfuric acid mist and sulfur dioxide. The exhaust is first treated in a caustic packed bed scrubber. The two-pass Tubular precipitator made of FRP is used to remove fine particulates and acid mist. High moisture loading and high concentration (0.4 to 0.5 grain/CF) of sub-micron particulates cause severe current suppression. Two passes in series are effective in combating the suppression effects. Collection efficiencies in 97 to 99 percent range are observed.
  • Hafnium oxide, a trace amount of elemental sulfur, some chlorides and sulfuric acid mist and sulfur dioxide.
B02 - WESP - R05
Silver/Gold Refining In the bisulfate slime fusion process, filtered slime obtained from the tank house electrolytic refining operations is fused in two rotary batch kilns. The typical charge for the rotary kiln consists of about 46% by weight slime. 41% by weight sulfuric acid and remaining sodium sulfate. The slime consists of appreciable quantitities of Copper, Silver, and Selenium. Silica, Lead, Tellurium, Arsenic, gold and other organic materials are also present. The fusion of slime in the rotary kiln is a batch process and requires approximately six hours. The fume laden gases pass through a primary spray quench type scrubber followed by a venturi scrubber and finally through a tubular wet ESP. The size of particles entering the precipitator is thus in the sub-micron range. Selenium in the crystalline form sticks tenaciously to solid surfaces, so collecting tubes are continuously flushed. Mild current suppression conditions are present. Generally, the particulate loading is in 0.1 to 0.2 grain/CR, but at times can go as high as 0.4 to 0.5 grain/CF. Since the exhaust volumes are small from these processes, a low throughput velocity (high SCA) single pass unit is used for this application. Collection efficiencies of 98%-99% are obtained on this application. Tubular precipitators have also been used on photographic film incinerator exhausts from recovering silver halides. Carbon and other finely divided impurities are also present in the exhaust gases. The gases are first passed through a quencher/scrubber and then through the Tubular precipitator. FRP construction is used to prevent chloride corrosion attack. Two passes are used to obtain extremely high collection efficiency.   B02 - WESP - R05
Molybdenum Roaster Molybdenum disulfide is oxidized in the multilevel hearth furnace to Molybdenum trioxide and sulfur dioxide. The exhaust is first passed through a baghouse and then through a lead lined quench scrubber. The exhaust stream entering the precipitator contains organic compounds and sulfuric acid mist with some oxides of Molybdenum, Selenium, Rhenium, and Mercury. Chlorides and trace amounts of fluorides are also present in the air stream. Fiberglass reinforced plastic with synthetic veil on the inside surface is used as a material of construction. A high SCA, two pass Tubular precipitator system has collection efficiency in excess of 99 percent. The cleaned gases are then taken to an acid plant.   B02 - WESP - R05
Nickel Recovery Variety of wastes are generated during steel making process. These wastes are generally contaminated with slag, oil, and water. Wastes from specialty steel making processes contain appreciable amounts of Nickel, and Chromium. Baghouse dust, mill scale, and high alloy grit. The mixture is palletized, dried , and then reduced in a rotary hearth furnace. Nickel and Iron oxides are completely reduced. The hot reduced pellets are mixed with additional fluxes and coarse metallics for adjustment of slag and metal chemistry. This is then fed into an electric arc furnace where Chromium oxide is reduced. The exhaust from electric arc furnace is taken to a high pressure drop (45″ w.c.) venturi scrubber. The sub-micron particulate emission from Venturi was still very high (0.1 to 0.2 grain/CF). Apart from causing opacity problems, the particulate carryover was causing maintenance problems for the high pressure fan. Two pass Tubular precipitators installed on this process completely eliminated this problem and plume opacity is reduced to almost zero. The unit is operated continuously wet to prevent accumulation of lead and zinc on the collector plates. Current suppression was of order of two to threefold.    

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
Sulfonation Plants Surfactants are organic compounds that have both a water soluble (hydrophilic) and a water insoluble (hydrophobic) group. The hydrophilic group for the most commercial available anionic surfactants is either a sulfonate or a sulfate. The hydrophobic portion is generally a hydrocarbon (C8-C18) in a straight or slightly branched chain. Oleum is most frequently used for sulfonation reaction. The reaction can be given by: RH + H2SO4 = RSO2OH + H2O Very dense white plume is generated during transfer of oleum to the storage tank. Fiber bed filters with absorption spray type devices have been used for control of these emissions. The emissions from the sulfonation reactor have also been handled using filters. However, pluggage problems are encountered during manufacture of some detergents. Two stage wet type Tubular precipitators have been used in this application quite successfully. The acid mist loadings are generally 0.25 to 0.3 grain/CF. Very fine size distribution (0.1 to 0.3 micron) is encountered. Low throughput velocities are required to achieve high collection efficiencies (99.5%). Tubular precipitators have also been used on the detergent spray tower emissions. Detergent slurry is sprayed from the top of the detergent spray tower. Hot gases are drawn countercurrently upwards. The organic oils are evaporated creating dense plume. The exhaust also contains carryover detergent fines and a high moisture load. Wet Tubular precipitators are used to control opacity of the exhaust stream.   B03 - FIBER WIND - R03 B02 - WESP - R05

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Sulphuric acid production form sulphur burning
  • Acid mist
B03 - FIBER WIND - R03 B04 - TIDEVANE - R03 B02 - WESP - R05
  Sulphuric acid production form metallurgical plant
  • Acid mist and submicronic dust
B03 - FIBER WIND - R03 B04 - TIDEVANE - R03 B02 - WESP - R05
  Copper, lead, nickel, magnesium and zinc smelters with sulfuric acid plant
  • Acid mist and submicronic dust
B03 - FIBER WIND - R03 B04 - TIDEVANE - R03 B02 - WESP - R05
Acid regeneration Many types of mist eliminators are used in sulfuric acid regeneration plants. The amount and type of mist generated in a given location in a sulfuric acid plant can vary greatly depending on the specific plant. Gas purification section Sludge acid and spent acid typically involve a gas purification section where mist eliminators are used prior to the drying towers. Drying tower Burning the hydrocarbons from the spent acid generates water and a weak acid and causes corrosion in the drying tower to be typically higher than sulfur burning plants. High alloy mist eliminators are often used in the drying towers.
  • WESP
  • FIBERWIND
  • MESHPADS
  • TIDEVANE
B03 - FIBER WIND - R03 B04 - TIDEVANE - R03 B02 - WESP - R05

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  TiO2 production
  • Acid mist, submicronic dust, SO2
B04 - TIDEVANE - R03 B02 - WESP - R05 VENTURI FLYER

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  "Wet" and "dry" chlorine applications "wet" chlorine applications (for removing brine mist prior to the drying tower) and for "dry" chlorine applications (for removing acid mist prior to the liquefaction of the chlorine). Three areas of the plant typically are candidates for FIBERWIND mist eliminators: Wet Cl2 - Gas Brine mists foul drying tower and increase sulfuric acid consumption in drying gas Brine Cell - H2 off gas carries caustic mist eliminate to downstream equipment Dry Cl2 Gas - Acid mists corrode compressor and reduces product quality
  • Acid mist, submicronic dust
  • FIBERWIND
B03 - FIBER WIND - R03

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
Sugar evaporators Sugar manufacturing and refining of sugar cane and beets use evaporators and vacuum pans. Entrainment of sugar into the condenser represents product loss (financial losses) and adds biological oxygen demand (BOD) to the receiving water. Reduce sugar losses Mist eliminators cut sugar losses by 96% and typically reduce BOD below 2 ppm or less.
  • TIDEVANE
B04 - TIDEVANE - R03

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
Recovery boilers: off gas treated in ammonia scrubber Paper Industry In paper making, large quantities of steam are required at three stages. First for cooking the wood chips, then to separate the individual cellulose fibers from the binding material lignin, and finally for evaporation of water in which cellulose fibers are dispersed for paper making. Economic considerations have led to development of some special type of boilers using pulp mill by-products. These include sand impregnated salt water borne bark and hogged wood fired boilers and recovery boilers using black kraft liquor and spent sulfite liquor. In ammonia based acid sulfite pulping processes, recovery boiler off gases are passed through an ammonia absorber. In the absorber, Ammonium sulfite and Ammo-nium bisulfite are produced by the following reactions: 2NH3 + H2O + SO2 = (NH4) 2 SO3 Ammonium Sulfite NH3 + H2O + SO2 = NH4 HSO3 Ammonium Bisulfite These reactions take place in the liquid phase and the ratio of the sulfite to bisulfite produced depends on the pH of the solution. To maximize absorption of SO2 and to minimize ammonia partial pressures, the absorber is operated at minimum practical temperatures. A very dense plume is observed at the absorber stack. The particle size is extremely fine, between 0.1 and 0.5 microns in diameter and the particles are not completely soluble in water. In the past, fiber bed filters have been used to control these emissions. However, pluggage and gradually increasing pressure drop through the fiber bed plagued these systems. Moreover, when pH control is not very accurate, free ammonia is generated, causing corrosion of the glass fiber. Tubular precipitators used on these applications are constructed of fiberglass. A specially conductive fiberglass resin was developed for this application. This eliminates the need for, and also the problems associated with, maintaining water film on the collecting electrode. The high voltage discharged electrode is made of graphite and high moly-bdenum stainless steel. Carpenter-20 discharge discs have also been used. The particulate concentration is generally in 0.4 to 0.6 grain/CF range for properly operated units. Increase in absorber temperature or in pH of the scrubbing liquor can significantly increase particulate concentration. Two pass Tubular precipitators have collection efficiencies in excess of 99 percent under the entire range of process conditions. The collection efficiencies were measured using modified EPA method 5 and forward light scattering photometer. Excellent agreement was found between these two measurements. Heavy current suppression was encountered. Which is believed to have been caused by heavy concentration of extremely fine particles and enormous moisture loading (saturated stream at 160 ℉).
  • Submicroninc dust (salts of ammonium sulphite ad ammonium bisulphite)
B04 - TIDEVANE - R03 B02 - WESP - R05 VENTURI FLYER
PULP Pulp and paper plants use contactors, evaporators, scrubbers, steam drums, and heat recovery systems in the many processes necessary to convert wood fiber to pulp and pulp to paper.
  • Water salt mist, submicronic dust
B04 - TIDEVANE - R03

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Dry
  • Toxic dusts
 
  Liquid
  • Aerosols
 

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Coffee roasters
  • Dust, mist, smoke, odors
 
  Fish cannery
  • Dust, smoke, odor
 
  Deep fat frying
  • Smoke food particles
 
  Smokehouses
  • Smokes, organics, odors
 

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Raw material treatment
  • Dust
 
  Melting furnace
  • Various dust, deNOX
 
  Fanning machine    

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Hospital incinerators
  • SO2, NOX, HCl, HBr, Heavy metals, Dioxine, PM2.5
B04 - TIDEVANE - R03 B02 - WESP - R05 VENTURI FLYER B07 - DeNOX - R02
  Starved air and liquid incinerators
  • SO2, NOX, HCl, HBr, Heavy metals, Dioxine, PM2.5
B04 - TIDEVANE - R03 B02 - WESP - R05 VENTURI FLYER B07 - DeNOX - R02
  Municipal incinerators
  • SO2, NOX, HCl, HBr, Heavy metals, Dioxine, PM2.5
B04 - TIDEVANE - R03 B02 - WESP - R05 VENTURI FLYER B07 - DeNOX - R02
  Sludge incinerators
  • SO2, NOX, HCl, HBr, Heavy metals, Dioxine, PM2.5
B04 - TIDEVANE - R03 B02 - WESP - R05 VENTURI FLYER B07 - DeNOX - R02

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
Asphalt vents Light end hydrocarbons emitted by hot asphalt are shock cooled when they contact the atmosphere creating a visible plume composed predominately of submicron liquid mist particles. This creates a "blue smoke" that can coat equipment, cause unpleasant odors, escape into the atmosphere, and become health hazards when inhaled.
  • Small organic mist particles
 
Brine concentrators Brine concentrators are used in a variety of industries for product recovery and elimination of wastewater for zero discharge plants. Plants that are designed for minimal or zero water discharge typically have evaporators or concentrators that remove minerals and solids from plant water for recirculation. Typically this process involves alloy mist eliminators installed in vapor bodies of evaporators to ensure high purity water for boiler feed or other applications.
  • Water salt mist
  • FIBERWIND
  • TIDEVANE
B03 - FIBER WIND - R03 B04 - TIDEVANE - R03
Ammonium nitrate

Emissions from ammonium nitrate production plants consist of ammonium nitrate, coating materials, ammonia, and nitric acid. The emissions will vary based on the specific plant operating characteristics. Solution formation and granulators primarily emit ammonia and nitric acid. Most process operations emit particulate matter consisting of ammonium nitrate and coating materials.

Vent lines
Ammonium nitrate applications include vent lines coming off the neutralizer and the evaporator concentrator

Prill tower
The ammonium nitrate prill tower must be fitted with mist eliminators to remove the sub-micron mist and particulate that causes a visible plume.

  • Ammonia, and nitric acid MIST
B03 - FIBER WIND - R03 B04 - TIDEVANE - R03
Amine contactors

Amine solutions are used to remove acidic components, such as H2S and CO2, from process gases. To maximize process efficiency, it is important to incorporate vapor-liquid and liquid-liquid separation technology in the operation.

Feed drum
Locating a mist eliminator in the feed drum prevents the entrainment of heavy hydrocarbon components into the absorber where they can cause fouling, foaming, and deterioration of the circulating amine solvent.

Absorber tower
AWS has designed several high efficiency mist eliminators for the top of the absorber tower that minimize the loss of valuable amine solvent from the top of the tower. These mist eliminators usually have a payback time of only a few months based on reduction of amine losses.

Flash drum
mist eliminators located on the vent line from the flash drum minimize the contamination of downstream equipment as well as the loss of valuable amine solvent. Liquid-liquid coalescing media in the flash drum can help the separation of any heavy oils entrained in the amine solvent which deteriorate the performance of the solvent and if carried to the stripper tower can cause foaming and fouling.

Stripper tower
Mist eliminators located in the top of the stripper tower minimize the contamination of downstream equipment as well as the loss of valuable amine solvent.

  B03 - FIBER WIND - R03 B04 - TIDEVANE - R03
  Catalyst regeneration
  • Dust, oil mist, aerosols, odors
 
Caustic evaporators Caustic evaporators and brine concentrators are used in a variety of industries for product recovery, treatment of wastewater, and elimination of wastewater for zero discharge plants.   B03 - FIBER WIND - R03 B04 - TIDEVANE - R03
  Storage facilities
  • Aerosols
 
FCC  
  • VOC, Hydrocarbon dust, catalyst
 
Phosphoric acid Phosphoric acid Burning and hydrating phosphorus rock causes small, sometimes sub-micron droplets that can cause air pollution if not treated properly.
  • Fumes, acid mists
 

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
Coal power plant SO2 removal with absorption scrubber (FGD)
  • SO3 mist and submicronic particles
B04 - TIDEVANE - R03 B02 - WESP - R05
Cogeneration with petroleum coke feedstock Cogeneration using petroleum coke feedstock has been investigated. The exhaust from tangentially fired pulverized coke boiler is first cleaned by a Dry ESP. Ammonia scrubbing or Double alkali processes are used fro SO2 scrubbing. The presence of heavy metal impurities in the fuel act as a catalyst to promote further oxidation of SO2 to SO3. Tubular precipitators are used to collect fine acid mist and fine sulfite-bisulfite emissions. The SO2 concentration has to be reduced to 5 ppm-10 ppm level to comply with opacity regulations.
  • Acid mist, submicronic dust
B02 - WESP - R05
Biomass plants  
  • Dust
 
Biomass GASIFICATION Thermochemical reactor vessel produces combustible synthesis gas. WASTE GASIFICATION
  • Char, ash and trace emissions
B02 - WESP - R05
Engine with Vegetable oil  
  • NOx
B07 - DeNOX - R02

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Gas and steam turbines utilize recycled lubricating oil for seals and bearings within the unit. As the oil is recycled back to the turbine oil reservoir, sub-micron oil mist escapes from the vent to the atmosphere causing accumulation of oil on roofs, buildings, equipment, which creates safety issues.
  • Oil mist
B20 - LOV MIST ELIMINATOR - R05

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Asphalt (hot paving patch plants)
  • Dust, VOC
B03 - FIBER WIND - R03 B02 - WESP - R05

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  CO2 purification
  • Oil mist, dust
B03 - FIBER WIND - R03

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Steam purification
  • Water salt mist, dust
B03 - FIBER WIND - R03 B04 - TIDEVANE - R03

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Air intake for engine room and cabin air conditioning
  • Water salt mist, dust
B04 - TIDEVANE - R03

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Nuclear waste recovery
  • Water salt mist, sumicronic radioactive dust
B03 - FIBER WIND - R03

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
  Electronic manufacturing
  • Heavy metals, acid fumes
1111
  Mineral wool furnace
  • Fumes aerosol, oil vapors, wool
 

SECTORPROCESSEMISSION TYPEAPPLICABLE AWS BULLETTIN
Cement Industry The major environmental problem to address is SO2 emissions control from the pre-heater exhaust or directly from the kiln. The raw materials used in this process may contain sulfides, FeS2 (also called pyrites) which get roasted in the pre-heater. As a result, SO2 is formed. The exhaust from the pre-heater contains this SO2 as well as abrasive dust (particulate) from the raw materials. If SO2 is released into the atmosphere, it will react with atmospheric water vapor to form H2SO4 and produce acid rain.
  • Potentially high inlet SO2
  • Abrasive Particulate
VENTURI FLYER

Tags: Electrostatic Precipitator, Scrubber, Venturi, Water, Air, Soil, Engineering solutions, Enviromental Engineering