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Air purifying technology

An air purification and process technology, applied in the field of air purification, can solve problems such as secondary pollution, achieve the effects of eliminating ozone, improving removal efficiency, and overcoming the problem of secondary pollution

Inactive Publication Date: 2005-08-24
TSINGHUA UNIV
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  • Claims
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Problems solved by technology

[0009] In order to overcome the shortcoming of secondary pollution produced by vacuum ultraviolet photocatalytic technology and improve the removal efficiency of pollutants in the air, the present invention proposes a new air purification process, which is characterized in that the process includes the following steps in sequence:

Method used

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Embodiment Construction

[0022] The present invention will be further explained below in conjunction with the drawings.

[0023] Such as figure 1 As shown, the air purification process of the present invention includes the following steps in sequence:

[0024] First, let the contaminated air pass through the filter layer 10 to remove the particles; the filter layer 10 can be made of non-woven fabrics, HEPA and other commonly used filter materials;

[0025] Then, let the filtered air pass through the photolysis-photocatalysis chamber 20 to preliminarily degrade the pollutants therein; the photolysis-photocatalysis chamber 20 is equipped with a low-pressure mercury lamp 30, and its air inlet and outlet are covered with loads. The metal wire mesh of the photocatalyst, the inner wall is coated with the photocatalyst;

[0026] Finally, let the preliminarily purified air pass through the adsorption-decomposition ozone-catalytic oxidation multifunctional bed 40 to further remove pollutants and decompose the ozo...

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Abstract

A process for purifying air includes such steps as filtering to remove particles, photodecomposing-photocatalyzing reaction in a chamber with photocatalyst coated on its inner surface for primarily degradating the pollutants, and adsorption-ozone decomposing-catalystic oxidizing on a multifunction bed to further remove pollutant. Its advantages are no secondary pollution.

Description

Technical field [0001] The invention relates to a purification process for polluted air, which is used to eliminate pollutants in the air, especially volatile organic pollutants and carbon monoxide, and belongs to the technical field of air purification. Background technique [0002] There are a variety of chemical pollutants in indoor air, the main sources of which are paint, adhesives, carpets, fabrics, cosmetics, mothproofing agents, air fresheners, dry-cleaned clothing, etc. The more common and harmful ones are volatilized from artificial boards. Volatile formaldehyde, paint solvent toluene volatile in furniture, vinyl chloride volatile in floor mats, etc. At present, 350 different volatile organic compounds have been detected in indoor air, including aliphatic hydrocarbons, halogenated hydrocarbons, aromatic hydrocarbons, alcohols, aldehydes, ketones, esters, etc. The main pollutants are formaldehyde, benzene, toluene, Freon compounds, chloroform, etc. [0003] In some speci...

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Application Information

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IPC IPC(8): B01D53/04B01D53/86F24F3/16
Inventor 张彭义张忠良张丽余刚刘栋
Owner TSINGHUA UNIV
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