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Catalyst for air sterilization, disinfection and purification and preparation method thereof

A sterilization and catalyst technology, applied in the direction of disinfectants, physical/chemical process catalysts, chemical instruments and methods, etc.

Active Publication Date: 2016-05-04
SHENZHEN KFAIR ENVIRONMENTAL TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] The purpose of the present invention is to solve the deficiencies of existing technologies in the application of advanced oxidation technology in gaseous conditions and pollutant treatment, and to provide a method capable of large-scale preparation of gas phase free radicals · OH, · ClO 2 、·HO 2 , · O's new method of air pollution control, which improves the removal efficiency, has no secondary pollution, long service life, simple and reliable, can coexist with man and machine, and has been applied in practice

Method used

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  • Catalyst for air sterilization, disinfection and purification and preparation method thereof
  • Catalyst for air sterilization, disinfection and purification and preparation method thereof
  • Catalyst for air sterilization, disinfection and purification and preparation method thereof

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Embodiment Construction

[0037] Example, first prepare a stable sodium chlorite stable solution, measure 5000ml of pure water, weigh 400g of sodium chlorite with a content of 80%, after dissolving in water, weigh 100g of sodium chloride and continue to stir and dissolve in water, then Add 20g of tetrahydrate sodium borate, and finally add 20ml of 30% hydrogen peroxide, stir and filter, and finally adjust the pH value between 8.0-9.5 with sodium carbonate. Then add 3000g of silicon dioxide with a particle size of 3~5mm and immerse it in the liquid, stirring continuously. After 1~2 hours, drain the remaining liquid, blow it dry with a fan, and dry it in a vacuum heating oven at 65°C until the moisture content is ≤ 8% can be taken out of the oven and cooled for later use. Two filter screens made of this material are assembled in a household disinfection purifier KF-501A with double-sided air intake. The purifier is not equipped with UV lamps and cooperates with H13HEPA nets to purify indoor air. attache...

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Abstract

The invention provides a catalyst for indoor air sterilization, disinfection and purification. A carrier of the catalyst is formed by adopting silicon dioxide, zeolite, kieselguhr, sepiolite, montmorillonite, aluminum oxide and other inorganic porous materials or cordierite and mullite honeycomb ceramic as a carrier, immersing the carrier in a sodium chlorite stabilizing solution or a chlorine dioxide stabilizing solution and drying the mixture. The material is irradiated by an ultraviolet lamp (an A wave band, a B wave band and a C wave band are all effective), gas phase free radicals .OH, .CIO2, .HO2, .O and other active particles are generated, a chain reaction is induced, viruses, bacteria, mould and other microbial pollutants are rapidly killed, and formaldehyde and other chemical pollutants are removed. Compared with the prior art, purification efficiency is high, no secondary pollution is generated, the service life is long, simplicity and reliability are achieved, and the catalyst can coexist with the man and machine. An air disinfection purifier made of the catalyst as a filtering material is detected by a third party mechanism accepted by CNAS and CMA, in a test cabin of 30M<3>, the bacterial eliminating rate in 15 min is 99.68%, the bacterial eliminating rate in 30 min is 99.99%, and the formaldehyde removal rate reaches 99.1% in 1 h.

Description

technical field [0001] The invention belongs to the field of green chemical advanced oxidation technology and environmental engineering application, and relates to the large-scale preparation of gas phase free radicals · OH and · ClO under gaseous conditions 2 、·HO 2 , O and other active particles, and induce a chain reaction. Background technique [0002] Microbial pollutants and chemical pollutants in air pollution are usually purified by adsorption, photocatalysis, negative ions, plasma, ozone and other methods. Among these methods, the purification method with high concentration ozone is the most effective, the standard electrode potential of ozone is 2.07 volts, and the chemical reaction rate constant is 10 1 ~10 2 L / (mol s), it takes 100 minutes for ozone to kill mold in the gas phase (one of the more difficult to kill microbial pollution), and there are still deficiencies in ozone purification, and ozone is harmful to human body, so it can be sterilized in indoor a...

Claims

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Application Information

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IPC IPC(8): B01J27/10A01N59/00A01P1/00A62D3/176B01D53/86A62D101/28
CPCA62D3/176B01D53/86A01N59/00B01J21/08B01J21/16B01J27/10A62D2101/28B01D2255/802B01D2257/91B01J35/39
Inventor 李国培
Owner SHENZHEN KFAIR ENVIRONMENTAL TECH DEV CO LTD
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