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A method for preparing lightweight retaining walls using fly ash after waste power generation

A waste-to-energy, light-weight technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as secondary pollution of the environment, easy damage of impermeable membranes, etc., achieve high decomposition rate, avoid secondary The effect of secondary pollution and fast degradation

Active Publication Date: 2016-08-24
广东春天生态科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method for preparing lightweight retaining walls using fly ash after waste power generation, so as to solve the problem that the existing anti-seepage membrane is easily damaged and causes secondary pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]Extract 40%~45% of the waste gas from the sintering head dust collector to be recycled as sintering combustion air. Part of the dioxin and carbon monoxide in the sintering cycle flue gas decomposes nitrogen oxides, and at the same time reduces the consumption of solid fuel; after the dust collector Catalytic reaction device is set, and in catalytic reaction device, catalyzer is irradiated with ultraviolet lamp; Get 2.5 kilograms of sodium sulfide, 3 kilograms of polypropylene fibers, 15 kilograms of water, 6 kilograms of cement, 5 kilograms of lightweight ceramsite, 6 kilograms of diatomaceous earth, 6 kg of expanded perlite and 30 kg of waste incineration fly ash were mixed and stirred evenly, injected into the plate forming mold, kept at 90°C for 12 hours, demoulded after composite molding, and then watered and cured for 72 hours to obtain a lightweight plate.

Embodiment 2

[0045] Extract 40%~45% of the waste gas from the sintering head dust collector to be recycled as sintering combustion air. Part of the dioxin and carbon monoxide in the sintering cycle flue gas decomposes nitrogen oxides, and at the same time reduces the consumption of solid fuel; after the dust collector Catalytic reaction device is set, and in described catalytic reaction device, catalyzer is irradiated with ultraviolet lamp; Get 5 kilograms of sodium thiosulfate, 8 kilograms of carbon fibers, 30 kilograms of water, 6 kilograms of cement, 5 kilograms of lightweight ceramsite, 6 kilograms of diatomaceous earth kg, 6 kg of expanded perlite, and 50 kg of waste incineration fly ash were mixed and stirred evenly, poured into the plate forming mold, kept at 80°C for 24 hours, demolded after composite molding, and then watered and cured for 48 hours to obtain lightweight sheet.

Embodiment 3

[0047] Extract 40%~45% of the waste gas from the sintering head dust collector to be recycled as sintering combustion air. Part of the dioxin and carbon monoxide in the sintering cycle flue gas decomposes nitrogen oxides, and at the same time reduces the consumption of solid fuel; after the dust collector Catalytic reaction device is set, and in described catalytic reaction device, catalyzer is irradiated with ultraviolet lamp; Get 5 kilograms of thiourea, 8 kilograms of wood fiber, 30 kilograms of water, 9 kilograms of cement, 8 kilograms of lightweight ceramsite, 9 kilograms of diatomaceous earth , 9 kg of expanded perlite, and 50 kg of waste incineration fly ash were mixed and stirred evenly, injected into the plate forming mold, kept at 60°C for 48 hours, demoulded after composite molding, and then watered and cured for 24 hours to obtain a lightweight plate .

[0048] The present invention utilizes the fly ash after garbage power generation to prepare light-weight retaini...

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Abstract

The invention is about a method for preparing a light-weight protection wall by utilizing flying ash generated after garbage power. The method comprises the following steps: 1) recycling sintering exhaust gas: extracting 40%-45% of exhaust gas from the back of a dust remover for a sintering machine head so as to be circularly used as sintering combustion air; 2) removing dioxin: in a catalytic reaction device, irradiating a catalyst by using ultraviolet light; 3) curing heavy metal: mixing the flying ash, a curing agent, anti-cracking fiber, light-weight ceramic particles, cement, diatomite, expanded perlite and water uniformly; and 4) carrying out light-weight board forming: injecting the mixture in step 3) into a board forming mold, demolding after composite forming, maintaining for 24-72h with water, thereby obtaining a light-weight board. With the method adopted to carry out harmless and resourceful treatment on the flying ash caused by waste incineration, the environment protection effect is obvious, the flying ash caused by the waste incineration can be effectively utilized by the method, in the process of treating the flying ash caused by the waste incineration, the emission reaches the standard, and the secondary pollution is avoided.

Description

technical field [0001] The invention relates to the field of auxiliary equipment for anti-seepage engineering systems of garbage landfills, in particular to a method for preparing light-weight retaining walls from fly ash after garbage power generation. Background technique [0002] With the rapid development of urbanization, a large amount of garbage is produced. Among the future crises predicted by the world's authoritative scientists, the garbage problem is one of them. A large amount of garbage damages the ecology and pollutes the environment, seriously affecting human life. For the treatment of garbage, most of them are currently carried out in landfills. The garbage disposal methods in landfills can generally be divided into several methods such as sanitary landfill, incineration, and composting. [0003] (1) Garbage incineration. Garbage incineration can reduce the volume of urban garbage by 80-90%, and the waste residue can be used as resources. Waste incineratio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/06
CPCY02W30/91
Inventor 林小明
Owner 广东春天生态科技集团有限公司
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