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A kind of safe disposal method of fly ash

A technology for safe handling and fly ash, applied in the direction of combustion method, combustion type, lighting and heating equipment, etc., can solve the problems of high price, limited use, etc., to achieve short processing time, reduced processing costs, low investment and operating costs Effect

Active Publication Date: 2021-07-06
汤广武
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with inorganic stabilizers, organic stabilizers have the advantages of less dosage, small capacity increase and stable properties, but they also have the problem of limited use due to high prices

Method used

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  • A kind of safe disposal method of fly ash
  • A kind of safe disposal method of fly ash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A method for safely handling fly ash, comprising the following steps:

[0051] (1) Deodorize and sterilize 10Kg of kitchen waste, 10Kg of domestic waste and 10Kg of human and animal manure;

[0052] (2) Sorting at least domestic waste and kitchen waste, removing plastic and rigid substances, and crushing each raw material for pretreatment after sorting, and the particle size of the crushed material is below 50mm;

[0053] (3) Mix 30Kg of fly ash with domestic garbage, kitchen waste and human and animal manure, and finally add 10Kg of calcium oxide and mix evenly to obtain a mixture;

[0054] (4) Add the mixture to the kneading device and knead at least once;

[0055] (5) Add the kneaded material to the molding equipment for molding to obtain a molded body, and then dry the molded body;

[0056] (6) Incinerate the dried molded body at a temperature of 1000-1600°C in a furnace, and obtain a harmless product after full combustion.

[0057] Wherein, the fly ash is fly as...

Embodiment 2

[0060] A method for safely handling fly ash, comprising the following steps:

[0061] (1) Deodorize and sterilize 10Kg of kitchen waste and domestic waste, 10Kg of non-hazardous waste sludge and 10Kg of human and animal manure;

[0062] (2) Sorting at least domestic waste and kitchen waste, removing plastic and rigid substances, and crushing each raw material for pretreatment after sorting, and the particle size of the crushed material is below 50mm;

[0063] (3) Mix 30Kg of fly ash and non-hazardous waste sludge evenly, then add domestic garbage, kitchen waste and human and animal manure to it for mixing, and finally add 10Kg of calcium oxide and mix evenly to obtain a mixture;

[0064] (4) Add the mixture to the kneading device and knead at least once;

[0065] (5) Add the kneaded material to the molding equipment for molding to obtain a molded body, and then dry the molded body;

[0066] (6) Incinerate the dried molded body at a temperature of 1000-1600°C in a furnace, an...

Embodiment 3

[0072] A method for safely handling fly ash, comprising the following steps:

[0073] (1) Deodorize and sterilize 10Kg of kitchen waste and domestic waste, 10Kg of non-hazardous waste sludge and 10Kg of human and animal manure. and pine leaves are collected, pulverized, mixed, heated to 140°C, and the steamed high-temperature turpentine steam is passed from the bottom of the collection tank to the collection tanks of domestic garbage, kitchen waste, non-hazardous waste sludge and human and animal manure to remove them. Odor sterilization treatment, the treatment time for domestic waste, kitchen waste, non-hazardous waste sludge and human and animal manure is 24-28 hours, 32-34 hours, 32-42 hours and 42-48 hours respectively;

[0074] (2) Sorting at least domestic waste and kitchen waste, removing plastic and rigid substances, and crushing each raw material for pretreatment after sorting. The particle size of the crushed material is below 50mm, and its moisture content is 35-45...

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PUM

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Abstract

The invention belongs to the technical field of stable treatment of waste incineration fly ash, and in particular relates to a safe treatment method for fly ash. The fly ash, binder and chlorine fixation agent are uniformly mixed to obtain a mixture, and the mixture is dried at a high temperature. The harmless products are obtained by incineration at low temperature, and the binder is one or a mixture of domestic waste, kitchen waste, and human and animal excrement. The beneficial effect of the present invention is that the fly ash is mixed and incinerated with various waste materials and chlorine-fixing agents to realize the harmless treatment of the fly ash, and at the same time reduce the treatment cost of other various garbage, which is clean and environmentally friendly, and has low investment and operation costs. Achieve higher economic and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of stable treatment of waste incineration fly ash, and in particular relates to a safe treatment method of fly ash. Background technique [0002] Fly ash refers to the substances collected in the heat recovery system and flue gas purification system after garbage incineration. The amount of fly ash produced is related to the type of garbage, incineration conditions, type of incinerator and flue gas treatment process, and generally accounts for about 3%-5% of the amount of garbage incinerated. Fly ash contains a large amount of lead, zinc, cadmium, mercury and other heavy metals and their salts, as well as a variety of persistent organic pollutants, of which dioxin is the main organic pollutant in fly ash. Dioxins are a general term for polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs), and the concentration distribution of dioxin isomers in fly ash has similar characteristi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G5/02F23G5/04F23G5/033F23G5/44
CPCF23G5/02F23G5/033F23G5/04F23G5/44
Inventor 汤广武
Owner 汤广武
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