The scrubbing process is intricate and requires special nozzles designed to remove pollutants and various chemical contaminants from gases, liquids, and equipment involved in the process. For instance, coal-fired power stations utilize scrubbers to eliminate sulfur oxides from boiler emissions. Additionally, it is feasible to extract nitrogen oxides from combustion emissions, acids from chemical processing off-gases, disinfectants from potable water, particulate matter from process gas, or odors from wastewater treatment facilities.

There are two types of scrubbers: dry scrubber and wet scrubber. Dry scrubbers also use fluid, but its amount is smaller than in wet scrubber system. The restricted scrubbing fluid enters the gas stream, evaporating entirely and resulting in either a gaseous or solid component that interacts with the pollutant, enabling its removal from the system. Dry scrubber system is often used to remove acid gases from combustion streams through an alkaline slurry injection.

Wet air scrubbers are more popular, they remove sulfur dioxide from coal-generated gas. Their design enables to collect both particulate and gaseous contaminants. Moreover, air scrubbers are highly versatile and their applications are not limited. Wet scrubber system removes pollutant particles by collecting them in liquid droplets. The main advantage of wet air scrubbers is their capacity to withstand high temperatures and they cool the flue gases.

Among wet scrubbers, the most common ones are venturi wet air scrubbers, packed bed wet scrubbers, and cyclonic spray scrubbers.

Venturi wet air scrubbers are the most effective to collect a particulate matter. The scrubber has a decreased pressure drop and a wide range of operating modes (contact time, number of grids) that enable to solve various tasks. However, venturi scrubbers are not productive at gas scrubbing.

Packed bed scrubbers are suitable for gas scrubbing because high concentrations of particulate matter clog the bed easily. The fields of application: chemical processing industry, petrochemical industry, manufacturing industry, waste management industry, pharmaceutical industry, steel industry, incinerators, halogen removal, humidification, odor control, VOC removal.

The use of cyclonic scrubbers is limited by particulate matter collection. They are less effective than venturi scrubbers because they can’t produce the same degree of useful turbulence. As for gas scrubbing, cyclonic wet air scrubbers are able to remove only very soluble gases.

Both dry and wet scrubbers can be used for an odour control at the factories. The majority of industrial processes, for example, waste storage, incineration, wastewater treatment, chemical processing, food processing etc., produce unpleasant smell that must be treated. The solution is the use of coverants, deodorants or absorbents that can be used in open type or packed bed type scrubber systems.

If you are looking for the best air treatment device to improve air quality, Redwood Technology offers a cutting-edge type of wet scrubber – a Multi-Vortex wet air scrubber.

Redwood technology is a fast-growing vendor of wet air scrubbers. The multi-vortex scrubber can remove gas emissions, dust, vapors, and other pollutants from a gas stream. It is an innovative technology created to save water that makes it more cost-efficient and differs from other types of scrubbers.  If you have any questions or would like to purchase a multi-vortex wet air scrubber, please contact us at info@rdwd.tech