Air purification method

An air purification and catalyst technology, applied in the field of purification, can solve problems such as unsatisfactory toxic gas removal effect, and achieve the effects of improving catalytic effect, prolonging service life and high purification rate

Active Publication Date: 2016-04-20
广东万德检测技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing air purification methods mainly remove particles, etc., but

Method used

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  • Air purification method

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Effect test

Embodiment 1

[0037] An air purification method comprises two steps of catalytic oxidation and liquid-phase absorption, the catalytic oxidation step includes completing desulfurization through a biofilm catalytic plate, and the biofilm catalytic plate is inoculated with Thiobacillus ferrosulfide; the following reactions are completed through the catalyst:

[0038] 2NO+O 2 =2NO 2

[0039] 2CO+O 2 =2CO 2

[0040] CO+NO=CO 2 +1 / 2N 2 ,

[0041] The catalyst is made of 28% Al 2 o 3 , 28%Fe 3 o 4 , 15%CeO 2 , 16%ZrO 2 and 13% Bi 2 o 3 Composition; the surface of the biofilm catalytic plate is provided with through holes, the distance between the through holes is 0.6cm, and the inner surface of the through holes is coated with Fe 2 o 3 Floor.

[0042]Liquid phase absorption completes the following reactions through the absorption liquid:

[0043] 3NO 2 +H 2 O=2HNO 3 +NO

[0044] NO+NO 2 +H 2 O=2HNO 2 ,

[0045] The absorption liquid is composed of 82% tris and 18% hydroch...

Embodiment 2

[0047] An air purification method, comprising two steps of catalytic oxidation and liquid phase absorption, the catalytic oxidation step includes completing desulfurization through a biofilm catalytic plate, the biofilm catalytic plate is inoculated and mounted with Thiobacillus ferrosulfide; and completing the following reactions through the catalyst :

[0048] 2NO+O 2 =2NO 2

[0049] 2CO+O 2 =2CO 2

[0050] CO+NO=CO 2 +1 / 2N 2 ,

[0051] The catalyst is made of 36%Al 2 o 3 , 20%Fe 3 o 4 , 19%CeO 2 , 14%ZrO 2 and 11% Bi 2 o 3 Composition; the surface of the biofilm catalytic plate is provided with through holes, the distance between the through holes is 0.6cm, and the inner surface of the through holes is coated with Fe 2 o 3 Floor.

[0052] Liquid phase absorption completes the following reactions through the absorption liquid:

[0053] 3NO 2 +H 2 O=2HNO 3 +NO

[0054] NO+NO 2 +H 2 O=2HNO 2 ,

[0055] The absorption liquid is composed of 92% tris an...

Embodiment 3

[0057] An air purification method comprising two steps of catalytic oxidation and liquid-phase absorption, the catalytic oxidation step includes completing desulfurization through a biofilm catalytic plate, and the biofilm catalytic plate is inoculated with Thiobacillus ferrosulfide; the catalyst completes the following reactions:

[0058] 2NO+O 2 =2NO 2

[0059] 2CO+O 2 =2CO 2

[0060] CO+NO=CO 2 +1 / 2N 2 ,

[0061] The catalyst is made of 32% Al 2 o 3 , 24%Fe 3 o 4 , 17%CeO 2 , 15%ZrO 2 and 12% Bi 2 o 3 Composition; the surface of the biofilm catalytic plate is provided with through holes, the distance between the through holes is 0.6cm, and the inner surface of the through holes is coated with Fe 2 o 3 Floor.

[0062] Liquid phase absorption completes the following reactions through the absorption liquid:

[0063] 3NO 2 +H 2 O=2HNO 3 +NO

[0064] NO+NO 2 +H 2 O=2HNO 2 ,

[0065] The absorption liquid is composed of 87% tris and 13% hydrochloric acid...

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Abstract

The invention discloses an air purification method. The air purification method comprises two steps of catalytic oxidation and liquid phase absorption. According to the step of catalytic oxidation, the following reaction is completed through a catalyst: 2NO+O2=2NO22CO+O2=2CO2CO+NO=CO2+1/2N2. The catalyst is composed of 28-36% of Al2O3, 20-28% of Fe3O4, 15-19% of CeO2, 14-16% of ZrO2 and 11-13% of Bi2O3. According to the liquid phase absorption, the following reaction is completed through an absorption liquid: 3NO2+H2O=2HNO3+NONO+NO2+H2O=2HNO2. The absorption liquid is composed of 82-92% of trihydroxymethyl aminomethane and 8-18% of hydrochloric acid. Concentration of trihydroxymethyl aminomethane is 0.1 mol/L. Concentration of hydrochloric acid is 0.1 mol/L. The air purification method has the characteristic of effectively removing NOX and COX in the air.

Description

technical field [0001] The invention relates to a purification method, in particular to an air purification method. Background technique [0002] Air purification is in demand in home, medical, and industrial fields. In the home field, single-unit household air purifiers are the mainstream products in the market, which can solve air pollution caused by volatile organic compounds in indoors, underground spaces, and cars due to decoration or other reasons. problem, due to the persistent and uncertain characteristics of the release of air pollutants in relatively closed spaces. However, the existing air purification methods mainly remove particles, etc., but for NO in the air X , CO X , SO X The removal effect of such toxic gases is not ideal. Contents of the invention [0003] The object of the invention of the present invention is to: aim at the above-mentioned existing problem, provide a kind of effectively remove NO in the air X and CO X method of air purification. ...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/86B01D53/60B01D53/62B01D53/38
CPCB01D53/75B01D53/8637B01D53/8643B01D2251/102B01D2252/10B01D2252/103B01D2252/2053B01D2252/504B01D2255/2065B01D2255/20715B01D2255/20738B01D2255/2092B01D2255/2096B01D2257/302B01D2257/404B01D2257/502B01D2257/70Y02A50/20
Inventor 张杰
Owner 广东万德检测技术股份有限公司
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