Device for removing harmful substance and air cleaning device by utilizing device for removing harmful substance to clean air

Abstract

The invention provides a device for removing a harmful substance and an air cleaning device by utilizing the device for removing the harmful substance to clean air. According to the device for removing the harmful substance, a harmful gas component trapped by circulating water can be processed in high efficiency by oxidative decomposition and the production of harmful intermediate during the decomposition of the harmful gas component can be reduced substantially. The device for removing the harmful substance comprises: an ultraviolet ray-penetrable separation body (24), which is inside a cylindrical container main body (23); an air chamber (26), which is formed inside the separation body (24); an ultraviolet radiation lamp (30), which is inside the air chamber (26); a carrier-loading photocatalyst (2), which is inside a fluid bed (25) and fills the space between the container main body (23) and the separation body (24); an air pump (38), which is used to introduce the air into the air chamber (26); and an aerator pipe (42), which is used for aerating the air inside the air chamber (26) to the fluid bed (25). The device for removing the harmful substance enables the circulating water capable of trapping the harmful gas component to flow circularly through the fluid bed (25).

Description

technical field [0001] The present invention relates to a harmful substance removal device for decomposing and removing harmful gas components captured by circulating water, and an air cleaning device using the same for air purification. Background technique [0002] An air purifier using a gas-liquid contactor is known as a purifier for purifying harmful gas components in the air, such as volatile organic compounds (such as formaldehyde and acetaldehyde) and nitrogen oxides. In an air cleaner using this gas-liquid contactor, the air to be treated is blown to a gas-liquid contactor such as a filter in which water circulates, and harmful gas components contained in the air are dissolved in the circulating water. In addition, if the concentration of dissolved gas in the circulating water with harmful gas components is increased, the gas capture efficiency will be reduced. Therefore, the circulating water should be replaced regularly, or the dissolved gas components dissolved i...

AI Technical Summary

Problems solved by technology

Therefore, when the oxidative decomposition treatment by ultraviolet irradiation is insufficient, there is a problem that intermediate products such as volatile organic compounds are discharged into the air again when they reach the gas-liquid contactor together with circulating water.

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