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Coal ash capable of adsorbing formaldehyde and preparation method of coal ash

A technology for adsorbing formaldehyde and fly ash, applied in separation methods, chemical instruments and methods, and other chemical processes, etc., can solve problems such as formaldehyde adsorption of fly ash without chemical modification treatment, and achieve human health protection, resource saving, The effect of protecting the environment

Active Publication Date: 2015-02-18
安徽创能环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the few problems in the prior art related to the fly ash that adsorbs formaldehyde, especially the problem that no chemical modification is used to treat the fly ash for formaldehyde adsorption, the present invention proposes a method for preparing fly ash that can adsorb formaldehyde

Method used

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  • Coal ash capable of adsorbing formaldehyde and preparation method of coal ash

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Embodiment 1

[0017] Get 100 grams of solid waste from power plants or coal-fired devices, and modify the raw materials by 5g surfactant N,N-dimethyldecylamide and bis-octyl alcohol succinic acid diester sulfonate, wherein N,N -The ratio of dimethyldecylamide and bis-octyl alcohol succinic acid diester sulfonate is 3:1; first stir and then soak for 0.5 hours, then use 7g formaldehyde capture agent 2-amino-2-methyl-1 - Carry out load treatment on the product obtained above with propanol, soak for 1.5 hours; dry at 20°C to remove most of the water so that the moisture content is lower than 30%, and then freeze-dry, the freeze-drying temperature is not higher than room temperature, and dry at room temperature for 5 hours , freeze-dried for 1 hour, and prepared fly ash capable of adsorbing formaldehyde.

Embodiment 2

[0019] Get 100 grams of solid waste from power plants or coal-fired devices, and modify the raw materials by 8g surfactant N,N-dimethyldecylamide and bis-octanol succinic acid diester sulfonate, wherein N,N -The ratio of dimethyldecylamide and bis-octyl alcohol succinic acid diester sulfonate is 3:1; first stir and then soak for 0.5 hours, then use 9g formaldehyde capture agent 2-amino-2-methyl-1 - Carry out load treatment on the product obtained above with propanol, soak for 1.5 hours; dry at 20°C to remove most of the water so that the moisture content is lower than 30%, and then freeze-dry, the freeze-drying temperature is not higher than room temperature, and dry at room temperature for 5 hours , freeze-dried for 1 hour, and prepared fly ash capable of adsorbing formaldehyde.

Embodiment 3

[0021] Get 100 grams of solid waste from power plants or coal-fired devices, and modify the raw materials through 10 g of surfactant N,N-dimethyldecylamide and bis-octyl alcohol succinic acid diester sulfonate, wherein N, N - The ratio of dimethylcaprylamide and bis-octyl alcohol succinic acid diester sulfonate is 3:1; first stir and then soak for 0.5 hours, then use 11g of formaldehyde capture agent 2-amino-2-methyl-1 - Carry out load treatment on the product obtained above with propanol, soak for 1.5 hours; dry at 20°C to remove most of the water so that the moisture content is lower than 30%, and then freeze-dry, the freeze-drying temperature is not higher than room temperature, and dry at room temperature for 5 hours , freeze-dried for 1 hour, and prepared fly ash capable of adsorbing formaldehyde.

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Abstract

The invention discloses a preparation method of coal ash capable of adsorbing formaldehyde. The coal ash is used as an adsorption material. The method comprises the steps of (1) modifying the coal ash by a surfactant, and stirring and soaking; (2) performing loading treatment on a product obtained in the step (1) by a formaldehyde catching agent, and soaking; and (3) performing normal temperature drying to remove most water, and performing freeze drying to prepare the coal ash capable of adsorbing the formaldehyde. The modified coal ash prepared by the preparation method disclosed by the invention can be used for further solving the problem of formaldehyde release from indoor air, and the health of a human body is guaranteed; meanwhile, the reacted coal ash can be used as a fertilizer, so that secondary pollution to the environment can be avoided.

Description

technical field [0001] The invention relates to a method for preparing a material for eliminating formaldehyde, in particular to a method for preparing fly ash capable of eliminating formaldehyde. Background technique [0002] Formaldehyde is a systemic poison, which will reduce the antioxidant capacity of various organs of the body, resulting in oxidative damage to organs, and the higher the concentration, the more serious the damage. Indoor formaldehyde pollution mainly comes from furniture, construction sources, fabrics, wood product fillers, cosmetics, detergents, and personal items. At present, a variety of methods have been adopted at home and abroad to control indoor formaldehyde pollution. These purification technologies are summarized as follows: adsorption technology, photocatalytic technology, negative air ion technology, chemical neutralization technology, ozone oxidation technology, biotechnology, catalytic oxidation at room temperature technology, material clo...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01D53/02
CPCB01D53/02B01D2253/20B01D2257/7022B01J20/22
Inventor 万祥龙张启明都方志闵凡飞
Owner 安徽创能环保材料有限公司
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