SCRUBBERS
Exhaust Emission and Pollution Control Systems
EXHAUST EMISSION AND POLLUTION CONTROL SYSTEMS
Technological requirements, legislative pressures, and last but not least a growing environmental concern by the population at large have led to substantial improvements in particle separation from gases during the past few years.
Correctly engineered and well-maintained emission control systems have a proven record of performance for fine particle separation.
We at RAYGM offers customized emission control systems for our customer needs, truly engineered to meet legislative requirements with lowest possible CAPEX + OPEX.
Our Customised Emission Control Products include
1. Cyclone Separators
2. Bag Filter (Bag House)
3. Wet and Dry Scrubbers.
3. SCRUBBERS
As the name scrubber implies, wet collectors or wet scrubbers are devices that use a liquid for removing particles or polluted gases from an exhaust gas stream. Water sprays can be injected into the gas stream; gas can be forced to pass through sheets or films of liquid; or, the gas can move through beds of plastic spheres covered with liquid. Each of these techniques can effectively remove particulate matter from process exhaust gases. They can also effectively remove gases such as particulate matters, HCl, SO2 etc.
- Roto-Vane scrubber with no moving parts
- Dynamic Mechanically assisted scrubbers.
- High efficiency adjustable venturi scrubber
- Multi-venturi scrubber
- Packed towers for gas absorption, odour control.
- Self-Priming Venturi Scrubbers.
- Volatile Organics Condensing and Coalescing Scrubber.
- Aerodynamic Dry Scrubbers.
RAYGM CYCLO-VANE SPRAY SCRUBBER
Scrubbing liquid is introduced into the scrubber as a spray directed down over a circular “SwirlScrub Section” arrangement. As the liquid drains through the vanes, it creates curtains of scrubbing liquid. Dust laden gas enters the scrubber tangentially and collides with the curtains initiating particle agglomeration. The coarser particles produced are washed down to the slurry outlet.
Due to cyclonic action of the saturated gas stream as it spins upward forces the agglomerated particles to fall out of suspension. The coarser droplets impinge on the mist eliminator vanes and the finer droplets are forced to drop out of suspension by gravitational and centrifugal forces acting on the gas stream as it exits through the top.
RAYGM DYNAMIC SPRAY SCRUBBER
This is combination of Cyclonic Scrubber and Centrifugal Fan. Dust laden gas enters the lower chamber of the Cyclonic Scrubber tangentially, imparting a cyclonic action to the stream. Coarse particles are removed by a combination of centrifugal and gravitational forces.
The gas stream containing the remaining fine dust is drawn into an adjacent chamber containing a wet- ted fan. Atomized scrubbing liquid is sprayed into the eye of the fan, further reducing droplet size. These droplets encapsulate the fine dust particles, thus enhancing agglomeration.
The gas stream then flows into the upper chamber tangentially at high velocity. The wet agglomerated particles are forced by cyclonic action against the chamber walls and drain down to the internal discharge cone. The gas stream, free of liquid droplets, spins out through an outlet atop the scrubber.
RAYGM VENTURI SCRUBBER
Another popular design from CorroComp is the Venturi scrubber. Venturis are used to collect both particulate and gaseous pollutants, but they are more effective in removing particles than gaseous pollutants.
With Venturi scrubbers, the dirty gas entering a scrubber is forced at high velocity through a Venturi where it collides with scrubbing water. The tiny water droplets capture particles through impaction and diffusion. The mist eliminator for a Venturi scrubber is often a separate device called a cyclonic separator or droplet separator.
The dirty water is then removed in the cyclonic separator and discharged into a recycle tank. Some of the liquid is continuously purged to limit the solids concentration and allow recirculation back to the Venturi section.
RAYGM PACKED SCRUBBER /ABSORPTION TOWER
Whether horizontal or vertical, packed-bed wet Scrubbers provide a reliable and practical means of removing acidic and caustic mists and gases from corrosive exhaust streams, with maximum efficiency and minimum pressure loss.
Pollutant laden gases enter at the bottom of the packed tower and rise upward, contacting the scrubbing liquid draining down through the packed column. Since the pollutant concentration decreases as the gas rises, there is constantly fresher solvent available for contact, resulting in an efficient removal of contaminants. Finally, the fine moisture droplets, still suspended in the cleaned gas stream, are removed by a mist eliminator.
Scrub liquid from the eliminator is collected in an integral reservoir and recycled to the tower. Makeup liquid is constantly introduced, and reagent is added on demand using a dosing pump controlled by a pH monitor.
SELF PRIMING SCRUBBERS
Self-Priming Ventury Scrubbers are designed to remove soluble gases and particulate by inducing a gas flow using high pressure liquid focused into a Ventury throat, which eliminates the need for a separate exhaust fan or blower to transport the contaminated gas stream to the Ventury scrubber. Design incorporates a high-pressure liquid spray for maximum entrainment and scrubbing efficiency, and is the optimal choice where heavy contaminant loads, and corrosive conditions are present with less air present. This provides excellent removal capacities for the reactor systems which needs continuous venting. Like Acid Hydrolysis etc.
Applications of Scrubbers
- Inorganic fumes, vapors, and gases (e.g., chromic acid, hydrogen sulphide, ammonia, chlorides, fluorides, SO2, chlorine gas, hydrochloric acid (HCL).
- Volatile Organic Compounds (VOC)
- Particulate Matter (PM) and Hazardous Air Pollutants (HAP) in particulate form (PMHAP).
- Corrosive air contaminants from processes such as – Hydrogen Bromide, Hydrogen Chloride, Hydrogen Cyanide, Hydrogen Fluoride, Hydrogen Iodide, Hydrogen Selenide, Hydrogen Sulfide
- Aluminum, titanium and other metal machining operations
- Sodium Azide propellant manufacturing and handling
- Pharmaceutical powders and dusts
- Calcium chloride dusts
- Hygroscopic dusts
- Corrosive dusts
- Bulk solids drying process
- Fertilizer Plants
- Odor control in food industries
- Odor Control in Algae Industries
- Odor Control in municipal waste plant.
- Odor control in Wastewater collection and treatment facilities.
- Chemical Industries
- Food / Dairy Industry
- Paper
- Dryer
- Pharmaceutical
- Roofing materials
- Asphalt
- Mining
- Steel
- Brick & Tile
- Fiberglass Insulation
- Power Generation
- Plastic Extrusion
- Ammonia
- Biogas desulphurization, Biogas purification
- Boron Trichloride, Boron Trifluoride
- Chlorine
- Diborane, Dichlorosilane, Dimethylamine
- Ethylene Oxide
- Methyl Bromide
- Methyl Mercaptan, Monomethylamine, Monomethylamine
- NOx
- Phosgene
- Propylene Oxide
- Silicone Tetrachloride, Silicon Tetrafluoride
- Trichlorosilane, Trimethylamine
- Aldehydes and Phenols
- Halogenated organic compounds.
