Pollution control by wet scrubbers for particulate pollutants

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Wet scrubbers are ideal air pollution control devices that efficiently remove particulate pollutants. To be more precise, scrubbers take away liquid or solid particulates from a gas stream during the wet scrubbing processes. Herewith, water is generally applied as an air treatment solution. 

The collection efficiency of modern wet air scrubbers is directly connected to the volume of energy spend during the contact between the gas stream and the scrubber solution. Thus, most scrubber systems offer more than 95% collecting efficiency of particulate pollutants.

It should be noted that wet air scrubbers can also be employed to treat acid gas. Wet scrubber systems have 3 energy usage levels. For instance, scrubbers of low energy operate at pressure drops less than 5 inches of the water column leading to the efficient removal of particulates greater than about 5-10 micrometers in diameter.

Wet scrubbers with medium energy use a pressure drop from 5 to 25 inches of the water column resulting in the removal of micrometer-sized particles, however, it is regarded to be low efficient on sub-micrometer particles. Scrubber system of high energy level needs for the most energy, herewith, it has a pressure drop of 25 to over 100 inches of the water column that allows removing sub-micrometer particulate pollutants.

All constructions of wet air scrubbers include mist eliminators or entrainment separators to take away entrained droplets that have the contaminants or particulates. The thing is that “the most common mist eliminators are chevrons, mesh pads, and cyclones.” 

Wet scrubber systems are considered to be prone to several operating challenges. For example, some scrubbers have “inadequate liquid flow, liquid re-entrainment, poor gas-liquid contact, corrosion, and plugged nozzles, beds, or mist eliminators.” Moreover, such types of wet scrubbers as condensation scrubbers, impingement plate scrubbers, mechanically-aided scrubbers, and orifice scrubbers are distinguished now. 

Wet air scrubbers have such qualities that demonstrate their performance as the pressure differential, liquid flow rate, and scrubber liquid outlet concentration. Also, there are less crucial parameters of air pollution control efficiency that contain gas flow rate, neutralizing chemical feed rate, and scrubber system outlet gas temperature. 

It should pay careful attention to the following factors to monitor: liquid pH, wet scrubber liquid specific gravity, and makeup/blowdown rates. Nevertheless, there is no benefit in controlling the wet scrubbing solution solids content in systems that monitor gaseous streams with low particulate pollutant loadings.

If you would like to make your contribution to improving air quality in order to provide air pollution control, you should choose a new type of wet scrubbers that is Multi-Vortex scrubber. Multi-Vortex wet air scrubber could apply water contaminated with dust, sand, and even small rocks to capture particulate pollutants, different types of dust, and some gases from the air. 

This type of scrubber is an ideal solution for ore and coal mining. Thus, it can be used in different mining, combustion, and chemical processes to capture gases. Also, in some cases, the unique Multi-Vortex scrubber design allows utilizing cheaper reagents to capture the pollutant gas with more efficiency than a standard wet scrubber. If you would like to buy Multi-Vortex wet air scrubber or have some questions, please contact us at info@optromix.com

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