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Safe treatment method for fly ash

A technology for safe disposal of fly ash, applied in the direction of combustion method, combustion type, incinerator, etc., can solve the problems of limited use and high price, and achieve the effects of reduced processing cost, short processing time and low energy consumption

Active Publication Date: 2019-12-31
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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  • Safe treatment method for fly ash
  • Safe treatment method for fly ash
  • Safe treatment method for 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 to remove plastic and rigid substances, and crushing and pre-processing each raw material after sorting, and the particle size of the crushed material is below 50mm;

[0053] (3) 30Kg of fly ash is mixed with domestic garbage, kitchen waste and human and animal excrement, and finally 10Kg of calcium oxide is added to 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 to form a molded body, and then dry the molded body;

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

[0057] Wherein, the fly ash i...

Embodiment 2

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

[0061] (1) Deodorize and sterilize a total of 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 to remove plastic and rigid substances, and crushing and pre-processing each raw material after sorting, and the particle size of the crushed material is below 50mm;

[0063] (3) After mixing 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 to form a molded body, and then dry the molded body;

[0066] (6) Incinerate the dried molded body in a furnace at a temperature of 1000-16...

Embodiment 3

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

[0073] (1) Deodorize and sterilize a total of 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 cont...

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Abstract

The invention belongs to the technical field of stable treatment of waste incineration fly ash, and particularly relates to a safe treatment method for the fly ash. The method comprises the followingsteps of uniformly mixing the fly ash, an adhesive and a chlorinating agent to obtain a mixture, carrying out drying treatment on the mixture, and then performing incineration at high temperature so as to obtain a harmless product, wherein the adhesive is one or a mixture of household garbage, kitchen waste and human and livestock manure. The safe treatment method for the fly ash has the beneficial effects that harmless treatment on the fly ash can be achieved by mixing and burning the fly ash with various waste materials and the chlorinating agent, and meanwhile the treatment cost of variousother wastes is reduced, so that the cost on environmentally friendliness, investment and operation is low, and higher economic benefits and environmental benefits can be achieved.

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 Applications(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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