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Scrubber
Scrubber systems are a diverse group of air pollution control devices that can be used to remove some particulates and/or gases from industrial exhaust streams. The first air scrubber was designed to remove carbon dioxide from the air of an early submarine, the Ictineo I, a role for which they continue to be used to this day.〔(Snorkel A steam powered submarine: the Ictíneo ). Low-tech Magazine, 24 de ghanta de 2008〕 Traditionally, the term "scrubber" has referred to pollution control devices that use liquid to wash unwanted pollutants from a gas stream. Recently, the term is also used to describe systems that inject a dry reagent or slurry into a dirty exhaust stream to "wash out" acid gases. Scrubbers are one of the primary devices that control gaseous emissions, especially acid gases. Scrubbers can also be used for heat recovery from hot gases by flue-gas condensation.〔(On Flue gas Condensation ) by Götaverken Miljö AB〕
There are several methods to remove toxic or corrosive compounds from exhaust gas and neutralize it.
== Combustion ==
Combustion is sometimes the cause for harmful exhaust , but, in many cases, combustion may also be used for exhaust gas cleaning if the temperature is high enough and enough oxygen is available.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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