Method for antistatic and non-dust-sticking deodorization and formaldehyde and VOCs decomposition

Abstract

The invention discloses a method for antistatic and non-dust-sticking deodorization and formaldehyde and VOCs decomposition. A conductive layer is efficiently deposited on an inorganic fiber through alow-temperature CVD technology to prepare a conductive fiber, the conductive fiber and a high-activity inorganic modified fiber, made of metal oxide and transition metal oxide, are braided in a mixedmode to obtain a filter screen, the filter screen is applied to an air conditioner and an air purifier, the filter screen is connected with a direct-current negative electrode, and the principle thatdusts in air and the conductive fiber also carry negative charges to repel each other is utilized to achieve antistatic and dust-free effects; and when air containing formaldehyde and VOCs passes through the air conditioner or the air purifier, the air is in contact with the high-activity inorganic fiber, active metal oxide particles on the surface of the high-activity inorganic modified fiber and H2O in the air adsorb formaldehyde in the air, rapidly catalytically oxidize the formaldehyde into CO2 and H2O, and also can catalytically oxidize VOCs into harmless gas or water in the same way, sothat the functions of deodorizing and decomposing the formaldehyde and the VOCs are realized; and the filter screen can be repeatedly used through a simple process.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a method for deodorizing and decomposing formaldehyde and VOCs by anti-static, non-sticky dust. Background technique [0002] The filter screens of existing air conditioners and air purifiers are all made of ordinary fabrics, HEPA filter paper, etc. After a period of use, the fabric filter screen is blocked by dust and affects the conveying effect of the air duct. Sent by the air-conditioning fan, it is very easy to cause respiratory tract infection and affect human health; [0003] The so-called self-cleaning technology of the air conditioner in the prior art is to realize the self-cleaning function by controlling the temperature. The dirt is frosted and the dust is peeled off through low temperature, and then washed by the condensation water technology. Effective, not able to clean the external dirty and clogged filter screen; [0004] In the prior art, there...

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Problems solved by technology

[0002] The filter screens of existing air conditioners and air purifiers are all made of ordinary fabrics, HEPA filter paper, etc. After a period of use, the fabric filter screen is blocked by dust and affects the conveying effect of the air duct. Sent by the air-conditioning fan, it is very easy to cause respiratory tract infection and affect human health;

[0003] The so-called self-cleaning technology of the air conditioner in the prior art is to realize the self-cleaning function by controlling the temperature. The dirt is frosted and the dust is peeled off through low temperature, and then washed by the condensation water technology. Effective, not able to clean the external dirty filter;

[0004] In the prior art, there is a kind of antistatic non-stick dust conductive cloth with good conductivity and shielding effect made by using conductive fiber materials, but the manufacturing process of the conductive cloth is complicated and requires metal fibers of various materials and carbon black conductive fibers and It is made of conductive double-sided adhesive, which cannot achieve a high-passing pore structure, so it cannot be applied to air conditioner filters and air purifier filters;

[0005] The existing technology for manufacturing photocatalyst filter screens is based on nano-titanium dioxide photocatalyst as raw material, combined with the latest nanotechnology, so that the photocatalyst is evenly attached to the surface of different substances with the smallest particles, and the light source of the photocatalyst excites electrons (e-) on the valence band to transition to Conduction band, corresponding holes (h+) are generated on the valence band to generate highly oxidizing active oxygen and hydroxyl radicals, which oxidize and decompose harmful organic substances such as formaldehyde TVOC, pollutants, odors, bacteria, etc. into harmless CO 2 and H 2 O to achieve the purpose of purifying the air and decomposing harmful organic substances. However, due to the dirty cover caused by dust and the filter screen is mostly used in an environment without light, the rapid failure of the photocatalyst leads to the loss of the purification function. After the photocatalyst fails, it cannot be recycled. It will also cause secondary pollution to the environment;

[0006] In summary, although the prior art has a single-function anti-static and non-stick dust material or a functional light-energy media filter that decomposes formaldehyde and VOCs, it cannot be applied to the filter material at the same time due to the difference in the manufacturing process. Defects, it is necessary to design an anti-static non-stick dust deodorization filter and experimental method for decomposing formaldehyde and VOCs

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