Compound adsorption type formaldehyde decomposition agent

A formaldehyde decomposition and composite adsorption technology, applied in the field of air purification, can solve the problems of low adsorption rate, leakage of formaldehyde, slow chemical decomposition reaction, etc., and achieve the effects of improving adsorption activity, reducing ash content, and changing acidity and alkalinity.

Inactive Publication Date: 2013-08-28
WUXI KAILI PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical adsorbents mainly include activated carbon, nitric acid modified activated carbon, hydrogen peroxide modified activated carbon, activated alumina, zeolite molecular sieve, etc., which are characterized by fast adsorption rate, but after the adsorption is saturated, it cannot continue to adsorb, but will leak formaldehyde to the outs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The active carbon powder of 180g and the Al2O3 powder of 10g are mixed homogeneously, to which the mass fraction of 25g is added is the potassium hydroxide aqueous solution of 5%, is dried after stirring; Add the microcrystalline cellulose of 2g to the mixture after drying, Then add 9g of manganese dioxide powder and mix evenly. The average particle size of the activated carbon powder, aluminum oxide powder, microcrystalline cellulose and manganese dioxide powder is 5-10 μm.

Embodiment 2

[0018] The activated carbon powder of 200g and the Al2O3 powder of 30g are mixed homogeneously, and the mass fraction of 40g is added wherein is the potassium hydroxide aqueous solution of 10%, is dried after stirring; Add the microcrystalline cellulose of 8g to the dried mixture, Then add 20g of manganese dioxide powder and mix evenly. The average particle size of the activated carbon powder, aluminum oxide powder, microcrystalline cellulose and manganese dioxide powder is 5-10 μm.

Embodiment 3

[0020] The activated carbon powder of 190g and the Al2O3 powder of 20g are mixed homogeneously, and the mass fraction of 30g is added wherein is the potassium hydroxide aqueous solution of 7%, is dried after stirring; Add the microcrystalline cellulose of 5g to the dried mixture, Then add 15g of manganese dioxide powder and mix evenly. The average particle size of the activated carbon powder, aluminum oxide powder, microcrystalline cellulose and manganese dioxide powder is 5-10 μm.

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Abstract

The invention provides a compound adsorption type formaldehyde decomposition agent, including the specific preparation steps as follows: mixing uniformly 180-200 parts by weight of an activated carbon powder and 10-30 parts by weight of an aluminum oxide powder, adding 25-40 parts by weight of a potassium hydroxide solution with mass fraction of 5-10%, stirring uniformly and then drying, adding 2-8 parts by weight of microcrystalline cellulose to the dried mixture, then adding 9-20 parts by weight of a manganese dioxide powder, and mixing evenly. The present invention employs a variety of mechanisms of formaldehyde adsorption and decomposition, adsorption is complete, decomposition effect is good, and the formaldehyde decomposition agent has the advantages of simple preparation method and low cost.

Description

technical field [0001] The invention relates to the technical field of air purification, in particular to an adsorbent for absorbing and decomposing formaldehyde. Background technique [0002] Formaldehyde is a colorless, irritating gas with a strong odor, and its 35% to 40% aqueous solution is commonly known as formalin. Formaldehyde is a protoplasmic poison, which can be combined with protein. After inhalation of high concentration formaldehyde, severe irritation and edema of the respiratory tract, eye stinging, headache, and bronchial asthma may occur. Direct skin contact with formaldehyde can cause dermatitis, stains, and necrosis. Frequent inhalation of a small amount of formaldehyde can cause chronic poisoning, mucous membrane hyperemia, skin irritation, allergic dermatitis keratosis and fragility, nail bed finger pain, long-term inhalation by pregnant women may lead to newborn baby deformities, and even death, long-term inhalation by men can cause male Sperm deformi...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30B01D53/81B01D53/72B01D53/02
Inventor 杨毅跃康国伟姚程成蒙相锋鲁尧
Owner WUXI KAILI PHARMA
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