Purification treatment device for removing VOC

Abstract

The invention relates to a purification treatment device for removing VOC. The purification treatment device comprises: an adsorption module comprising an adsorption unit and a heating member; a gas flow driving module arranged on the upstream or the downstream of the adsorption module in a gas flow direction and used for driving a gas flow to flow; a photocatalysis module arranged at the downstream of the adsorption module along the gas flow direction and used for adsorbing VOC in the gas flow flowing through the photocatalysis module and photocatalytically decomposing the VOC; and a controlmodule connected to the gas flow driving module and the heating member and used for controlling the gas flow speed and the heating temperature of the adsorption unit. According to the invention, the purification treatment device has an adsorption working mode, a decomposition working mode or a combination of the adsorption wording mode and the decomposition working mode, wherein the adsorption module and the gas flow driving module are operated in the adsorption working mode, and in the decomposition working mode, the photocatalysis module, the gas flow driving module and the control module are operated, and the gas flow speed and / or the heating temperature of the adsorption unit are / is controlled through the control module, so that the VOC released by the adsorption unit is completely orpartially adsorbed by the photocatalysis module.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a purification treatment device and method for removing VOC (Volatile Organic Compound, volatile organic compound). Background technique [0002] The existing technology provides many different methods to remove various VOCs such as formaldehyde and toluene, and the basic principle is usually to use reaction, adsorption or photocatalysis. However, there are some defects and deficiencies in these existing processing methods. [0003] For example, for the method of removing formaldehyde based on the reaction principle, although formaldehyde can be removed quickly, new organic substances will inevitably be produced. That is to say, using the above reaction method not only cannot remove other organic substances such as benzenes other than formaldehyde, but will even aggravate the pollution of organic substances. In addition, when the reactive substances are gradual...

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Problems solved by technology

However, there are some defects and deficiencies in these existing processing methods

[0003] For example, for the method of removing formaldehyde based on the principle of reaction, although formaldehyde can be removed quickly, new organic matter will inevitably be produced

That is to say, using the above reaction method not only cannot remove other organic substances such as benzenes other than formaldehyde, but will even aggravate the pollution of organic substances

In addition, when the reactive substances are gradually consumed, the above methods will eventually lose the function of removing formaldehyde

[0004] For another example, although the adsorption method can remove various organic substances such as aldehyde and benzene at the same time, the adsorption treatment is a dynamic equilibrium process, which is not only related to the VOC concentration difference before and after treatment and temperature and other factors, but also when the temperature rises It is possible to release the adsorbed harmful substances, so that they cannot be completely adsorbed and removed from the harmful substances

[0005] As another example, although the photocatalytic mode can theoretically remove these harmful substances by decomposing VOC into carbon dioxide and water, the slow decomposition speed is the biggest shortcoming of the photocatalytic method.

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