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Filter screen used for preventing and controlling fog and haze

A filter screen and wire mesh technology, applied in the field of air purification, can solve problems such as depression, affect reproductive ability, and adversely affect children's growth, and achieve the effect of protecting health

Inactive Publication Date: 2016-02-03
WUXI QIAOYANG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] (4) Not conducive to children's growth
In addition, due to the weak light and the resulting low air pressure in foggy days, some people will experience laziness and depression in foggy days
[0016] (6) Affect reproductive ability
[0021] The filters in the prior art purify the air through filtration or adsorption, but nitrogen oxides or sulfur oxides in the air cannot be removed by filtration or adsorption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Prepare catalyst by impregnation method, carrier is zeolite, Si / (Si+Al+P) mol ratio is 0.20 in the framework structure of zeolite, and active component is the mixture of titanium dioxide and cerium oxide, and the mol ratio of Ti and Ce is 4: 3, and the titanium dioxide is an anatase crystal form, the weight content of the active component in the catalyst is 5%, the cocatalyst is silver and ferric oxide, and the molar ratio of Ag to Fe is 2:5, so The weight content of the promoter in the catalyst is 2%.

[0036] The filter screen includes a frame, at least 6 layers of mesh structure are fixed in the frame, and the mesh structure is sequentially superimposed with a wire mesh support layer, a porous fiber layer, an activated carbon layer, a catalyst layer, a porous fiber layer and Wire mesh support layer. When the PM2.5 is 300, the polluted air passes through the filter at a speed close to the breathing speed of 1 m / s, and the air treated by the filter is tested, and its ...

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PUM

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Abstract

The invention discloses a filter screen. The filter screen comprises a frame; at least 6 layers of a net structure are fixed in the frame; from inside to outside, a metal wire net support layer, a porous fibre layer, an active carbon layer, a catalyst layer, a porous fibre layer, and a metal wire net support layer are overlapped on the net structure successively; the catalyst later is composed of a powdery catalyst comprising a carrier, an active component, and a catalyst promoter. PM2.5 particles, nitrogen oxides, and oxysulfides contents are reduced to extremely low levels when fog and haze air is delivered through the filter screen; air in vehicles is purified effectively; and respiratory system health of people indoor is protected.

Description

technical field [0001] The invention relates to the field of air purification, in particular to a filter screen for preventing haze. Background technique [0002] Haze weather is a state of air pollution. Haze is a general expression of the excessive content of various suspended particulate matter in the atmosphere, especially PM2.5 (particulate matter with an aerodynamic equivalent diameter less than or equal to 2.5 microns) is considered to cause haze. The "culprit" of the weather. [0003] Fog is an aerosol system composed of a large number of tiny water droplets or ice crystals suspended in the air near the surface. It mostly occurs in autumn and winter, and is the product of condensation (or sublimation) of water vapor in the air near the surface. The existence of fog will reduce the transparency of the air and deteriorate the visibility. If the horizontal visibility of the target is reduced to within 1000 meters, the weather phenomenon of water vapor condensation (or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/00B01D46/12B01D46/30B01D53/86B01D53/60B01J29/072B60H3/06
CPCY02A50/20Y02A50/2351
Inventor 沈秋
Owner WUXI QIAOYANG MACHINERY MFG
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