Composite air filtering material for filtering bag and preparation method thereof

Abstract

The invention relates to a compound air filter material and a method for preparing the same. The composite air filter material used for filter bags comprises a protective layer, a deodorizing layer and a filter layer, wherein the protective layer and the filter layer are compounded on two side faces of the deodorizing layer respectively; the protective layer is made of wood pulp fiber filter paper, spun-bond non-woven fabric or spun-lace non-woven fabric, and the gram weight of the material of the protective layer is 10 to 200g/m; the deodorizing layer is made of one of active carbon, zeolite , sodium bicarbonate, magnesium aluminum silicates and silica gel or a mixture of any two of the wood pulp fiber filter paper, the spun-bond non-woven fabric and the spun-lace non-woven fabric, and the gram weight of the material of the deodorizing layer is 10 to 300g/m; and the filter layer is made of melt-blown non-woven fabric, wood pulp fiber filter paper or SMS non-woven fabric, and the gram weight of the material of the filter layer is 10 to 100g/m. The compound air filter material has high filtration efficiency and deodorization efficiency, low filtration resistance and high dust capacity.

Description

(1) Technical field [0001] The invention belongs to the field of air filtration, and specifically relates to a composite air filtration material for filter bags and a preparation method thereof. (2) Background technology [0002] The air filter material generally used for filter bags has a single function, and the main function is limited to filtration. The tiny particles in the air contain a large number of bacteria. These tiny particles sometimes contain nutrients such as starch and protein, which provide living conditions for bacteria to multiply. The filter bag becomes a source of pollution, and at the same time, a large amount of peculiar smell gas is generated to the environment. Bring secondary pollution. [0003] A layer of activated carbon cloth is added to the filter material of a small number of filter bags. The activated carbon cloth has relatively low carbon content, has a greater impact on the resistance of the filter bag, and has high cost. Only a single ordinary a...

AI Technical Summary

Problems solved by technology

[0002] Generally, the air filter material used for filter bags has a single function, and the main function is limited to filtering

The tiny particles in the air contain a large number of bacteria. These tiny particles sometimes contain nutrients such as starch and protein, which provide living conditions for the bacteria to multiply. The filter bag becomes a source of pollution, and at the same time produces a large amount of odorous gas, which pollutes the environment. bring secondary pollution

[0003] A layer of activated carbon cloth is added to the filter material of a small number of filter bags. The carbon content of the activated carbon cloth is relatively low, which has a great impact on the resistance of the filter bag and is expensive.

Only a single ordinary activated carbon is used, and the removal rate of ordinary activated carbon for harmful gases containing benzene rings is not bad, but the removal rate for aldehydes, acid gases and alkaline gases is very poor

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