Ergil Scrubber Systems
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The harmful gases and odors caused by the activities of industrial facilities and enterprises pose a great threat to human and environmental health. It is necessary to develop some systems to protect our environment from these harmful substances. Gas purification systems installed in this direction contribute significantly to ensuring environmental safety. This system prevents the formation of acid rain by purifying the acidic gases from the exhaust before being released into the sky. Scrubber units, especially known as gas scrubbers, are one of the most efficient systems used to reduce emissions in the form of odor, soot, dust, vapor and aerosol emitted by pollutants to the atmosphere below certain limit values.
Wet Scrubbers are Used to Treat or Clean the Following Lists of Chemicals From a Process Exhaust Air Stream with Ammonia Being the Most Popular:
Ammonia
Chlorine
Hydrochloric Acid
Chlorinated Silanes
Sulfur Oxides
Nitrogen Oxides
Hydrogen Sulfide
Boron Trifluoride
Amines
Gas scrubbers are widely used systems in both industrial and experimental gas cleaning processes due to their high efficiency. It has different configurations in terms of design and operation; It can be used for the removal of gaseous pollutants (H2S, NH3, etc.) as well as the removal of particles that can be contained in the gas. Chemical & Gas scrubber systems, in terms of different designs; gas phase, liquid phase, gas phase and liquid phase are divided into three. Venturi, plate, orifice gas scrubbers can be given as examples of gas phase ones. Spray and filled scrubbers are classified as liquid phase scrubbers. Cyclonic and dynamic gas scrubbers are in the gas and liquid phase scrubbers group.
Types of Gas Scrubbers
Gas scrubber systems, in terms of different designs; gas phase, liquid phase, gas phase and liquid phase are divided into three. Venturi, plate, orifice gas scrubbers can be given as examples of gas phase ones. Spray and filled scrubbers are classified as liquid phase scrubbers. Cyclonic and dynamic gas scrubbers are in the gas and liquid phase scrubbers group.
Venturi Gas Scrubbers
The dirty gas enters the system from the junction section and when a narrowing occurs at the throat point, the speed of the dirty gas increases. A turbulent mixing occurs as the dirty gas moves at a higher velocity at the throat point. Gas flow can be approximately 90,000 m3 / h in venturi scrubber systems with a circular neck section. At higher gas flows than this value, it is difficult to maintain a uniform fluid distribution unless baffle plates are used. Venturi scrubbers with a rectangular, long and narrow neck have also been developed for high flow gas flows.
Plate Scrubbers
Such scrubbers consist of plates placed horizontally in a vertical column. Perforated plates, impact type plates, sleeve type plates and valve plates are common plate types used in this type of scrubber. In perforated plates, the void ratio is approximately 1800-1900 holes / m2. The gas stream breaks up the sprayed liquid, creating droplets of 10-100 μm in diameter.
Spray Scrubbers
It has a very simple structure in terms of design and its working principle is based on spraying the washing liquid through nozzles into an empty cylindrical column. It exhibits a more favorable situation for the retention of particles of 10-25 μm size. The retention efficiency of gaseous pollutants can be improved by increasing the number of droplets or the liquid-gas ratio, but in this case operating costs may increase.
Packed Scrubbers
The scrubber consists of a cylindrical column with a feed with inert solid materials (fillings). The liquid from the pure solvent or solution containing the solute is spread over the fillings with the help of a dispersant and wet the surface of the fillings evenly.
Dirty gas enters the diffusion cavity under the fillings and rises up through the fillings. Fillers provide a large area between liquid and gas and a very close contact surface between phases. The dirty gas is absorbed by the liquid entering the tower and the diluted gas is separated from the top.
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