Burn-free coal-ash-based geological polymer high performance adsorbing material preparation method

An adsorption material, a technology of fly ash, which is applied in the field of preparation of high-performance adsorption materials based on non-burning fly ash based geopolymers, can solve the problems of poor adsorption, achieve the effects of material forming inhibition, simple preparation process, and increase specific surface area

Inactive Publication Date: 2017-02-01
TSINGHUA INNOVATION CENT IN DONGGUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above-mentioned problems of producing a large amount of waste acid and alkali in the process of preparing the adsorption material from the existing fly ash, the present invention aims to develop a method for preparing a non-burning fly ash-based geopolymer high-performance adsorption material. In order to solve the problems of poor selective adsorption of the adsorbent materials prepared by etc., develop a high-performance adsorbent material based on non-fired fly ash based geopolymers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Liquid raw materials: Weigh 4g of sodium hydroxide, 16g of water glass, 15-20g of water, and 0.5g of cetyltrimethylammonium bromide (CTAB). Dissolve CTAB in water for later use; then add sodium hydroxide into water glass to dissolve, stir evenly, and wait for the temperature to drop to room temperature to become an alkali activator;

[0027] Solid raw materials: Weigh 100g of fly ash, 30g of organic bentonite, 0.5g of zeolite, and mix them uniformly; they are solid raw materials;

[0028] Mix the solid raw materials with the liquid raw materials, stir evenly, and form a semi-dry powder state, or weigh all the fly ash, organic bentonite, and zeolite and directly add them to the alkali activator and stir evenly, then place the mixed powder raw materials Put it into a disc granulator, rotate the disc, spray granulate into a spherical shape, add CTAB aqueous solution during the granulation process, and then maintain it at 70°C and 90% humidity for 24 hours. After the prepar...

Embodiment 2

[0031] Liquid raw materials: Weigh 4g of sodium hydroxide, 16g of water glass, 15-20g of water, and 0.5g of cetyltrimethylammonium bromide (CTAB). Dissolve CTAB in water for later use; then add sodium hydroxide into water glass to dissolve, stir evenly, and wait for the temperature to drop to room temperature to become an alkali activator;

[0032] Solid raw materials: Weigh 50g of fly ash, 50g of kaolin, 30g of organic bentonite, 0.5g of zeolite, and mix them uniformly; they are solid raw materials;

[0033] Mix the solid raw materials with the liquid raw materials, stir evenly, and form a semi-dry powder state, or weigh all the fly ash, organic bentonite, and zeolite and directly add them to the alkali activator and stir evenly, then place the mixed powder raw materials Put it into a disc granulator, rotate the disc, spray granulate into a spherical shape, add CTAB aqueous solution during the granulation process, and then maintain it at 70°C and 90% humidity for 24 hours. Af...

Embodiment 3

[0036] Liquid raw materials: weigh 4g of sodium hydroxide, 16g of water glass, 30-35g of water, and 0.3g of sodium dodecylsulfonate or CTAB. Dissolve the surfactant in water for later use; then add sodium hydroxide into the water glass to dissolve, stir evenly, and wait until the temperature drops to room temperature to become an alkali activator;

[0037] Solid raw materials: Weigh 100g of fly ash, 30g of organic bentonite, and 0.5g of zeolite, and mix them uniformly to form solid raw materials;

[0038] Mix the solid raw material with the alkali activator, stir evenly, and form a semi-dry powder state, or weigh all the fly ash, organic bentonite, and zeolite and add them directly to the alkali activator and stir evenly, then add the surfactant aqueous solution to the solid In the raw materials, fully stir to make them evenly mixed to form a mobile slurry, put the slurry into a stainless steel mold, shake it on a vibration table, maintain it at 70°C and 90% humidity for 24 ho...

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Abstract

The invention provides a burn-free coal-ash-based geological polymer high performance adsorbing material preparation method which comprises the following steps: a, preprocessing a solid raw material; b, preparing a base material, wherein solid waste coal ash containing rich aluminosilicate is utilized as the solid raw material, an alkali activator is utilized as a liquid raw material, and the solid raw material and the liquid raw material are evenly mixed to react at a temperature of 20 to 100 DEG C to form a base; c, forming a base material, i.e., forming the evenly-mixed solid and liquid raw materials into a base sample through granulation molding or casting molding or extrusion molding; d, maintaining the base sample; e, washing and drying. The method can save energy, is simple in preparation technology, can reduce production cost, can be used to produce a high performance geological polymer adsorbing material in a large scale, and the waste coal ash of coal-fired power plants is utilized as a raw material to prepare the adsorbing material at a room temperature; thus, the problem of coal ash stack and waste and the environmental problems caused by the coal ash stack and waste are solved, and industrial organic waste gas and waste water containing phenol can be treated in a mode of using waste to treat waste.

Description

technical field [0001] The invention belongs to the field of comprehensive disposal and comprehensive utilization of solid waste, and in particular relates to a preparation method of a non-burning fly ash-based geopolymer high-performance adsorption material. Background technique [0002] At present, the commonly used adsorption materials mainly include activated carbon, activated carbon fiber, zeolite, molecular sieve and so on. Since the regeneration methods of activated carbon mainly include heating regeneration method, chemical regeneration method and chemical regeneration method, etc., when activated carbon is used for regeneration treatment, the loss rate of carbon is high, and the regeneration cost is high, and it is easy to cause secondary pollution, poor quality and short service life. , low regeneration rate, etc.; and zeolite molecular sieves are prepared by alkali fusion and hydrothermal synthesis. The preparation process is complicated, and a large amount of was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16B01J20/30B01D53/02C02F1/28
CPCB01J20/12B01D53/02B01J20/165C02F1/283C02F2101/345
Inventor 贾屹海常杰善赵凯王川行陈思颖
Owner TSINGHUA INNOVATION CENT IN DONGGUAN
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