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A method of air purification

A technology of air purification and catalyst, applied in the field of purification, can solve the problems of unsatisfactory removal of toxic gases, etc., and achieve the effects of improving catalytic effect, high purification rate and prolonging service life

Active Publication Date: 2017-12-15
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 for NO in the air X , CO X , SO X The removal effect of toxic gases is not ideal

Method used

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  • A method of air purification

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] An air purification method includes two steps of catalytic oxidation and liquid phase absorption. The catalytic oxidation step includes the completion of 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 spacing of 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% hydrochloric acid, the concentration of tris...

Embodiment 2

[0047] An air purification method includes two steps of catalytic oxidation and liquid phase absorption. The catalytic oxidation step includes completing desulfurization through a biofilm catalytic plate, inoculating the biofilm catalytic plate with Thiobacillus ferrosulfide; and completing the following reactions through a 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 spacing of 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 and 8% hydrochloric acid, the concentration of tris is 0.1 mol...

Embodiment 3

[0057] An air purification method includes two steps of catalytic oxidation and liquid phase absorption. The catalytic oxidation step includes desulfurization by passing 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 spacing of 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, the concentration of the tris is 0.1 mol / L,...

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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, particularly an air purification method. Background technique [0002] Air purification is in demand in the home, medical, and industrial fields. In the home field, stand-alone household air purifiers are the mainstream products in the market, which can solve indoor, underground space, and car volatile organic compounds air pollution caused by decoration or other reasons. The problem is that the release of air pollutants in a relatively closed space has the characteristics of persistence and uncertainty. However, the existing air purification methods mainly remove particles, etc., but have no effect on the NO in the air. X , CO X , SO X The removal effect of other toxic gases is not ideal. Summary of the invention [0003] The purpose of the present invention is to provide an effective method for removing NO in the air in view of the above-mentioned problems. X And CO X Method of air purification. [0004] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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 陈日玲顾明桂王君史丽峰黄翠云
Owner 广东万德检测技术股份有限公司