Urban garbage disposal method

A municipal waste and ozone treatment technology, applied in recycling technology, construction waste recycling, solid waste removal, etc., can solve the problems of human injury, complex equipment, large amount of fly ash, etc. Amount used, the effect of reducing harmful ingredients

Inactive Publication Date: 2011-08-17
李凤山 +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Although the waste incineration plant has adopted collection measures for the fly ash produced during incineration, due to the large amount of fly ash produced and the high temperature, the dust removal equipment such as bag dust removal and electrostatic dust removal cannot meet the requirements for collecting a large amount of dust in the fly ash, and it is troublesome to replace. The effect is not ideal. A considerable amount of incineration fly ash is discharged into the atmospher...

Method used

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Embodiment Construction

[0033] 1. After the urban waste is sorted by magnetic separation and winnowing using the garbage pre-selector, it is sorted manually as much as possible. The main sorting is to detect fruits and vegetables, glass, scrap metal, and construction waste, and there is no need to sort out plastic products .

[0034] 2. The sorted municipal waste is crushed to less than 10mm by a crusher.

[0035] 3. Pour the crushed municipal waste into the mixer, add coal slime and sludge for mixing and stirring, the weight ratio of coal slime, sludge and municipal waste is 0.5:0.5:1.

[0036] 4. Put the urban waste mixed with coal slime and sludge into the sealed dry incineration boiler with fly ash treatment through the belt for incineration and fly ash treatment, such as figure 1 As shown, the process is as follows:

[0037] The mixed urban waste is conveyed to the drying equipment 2 through the conveyor belt 1. After being dried in the serpentine dryer 3, the urban waste falls to the slope at...

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Abstract

The invention discloses a method for burning urban garbage and disposing fly ash in enclosed environment, comprising the following steps: sorting the urban garbage; crushing the sorted urban garbage; mixing the crushed urban garbage by using a combustible material including fixed carbon; drying the mixed urban garbage; carrying out enclosed burning on the fried urban garbage at a burning temperature above 850 DEG C under mixed oxygen; carrying out low-temperature circular disposal on the dust particles in the burning fly ash of the urban garbage by using fly ash slurry; and carrying out low-temperature circular disposal on the harmful gas in the burning fly ash of the urban garbage by using a harmful gas adsorption material and water. Through the method, the combustion temperature of a burning boiler can be up to 850 DEG C, the garbage burning can be controlled above 2 seconds, the generation of dioxin and furan can be effectively retrained, the dust and harmful gas in the generated fly ash (smoke) are fully adsorbed and the environment around the burning field can be effectively protected.

Description

technical field [0001] The invention relates to a method for treating urban garbage, in particular to a method for comprehensively treating urban garbage. Background technique [0002] Municipal waste is complex and difficult to deal with. Incineration is an important means of municipal waste (including domestic waste and medical waste) disposal. [0003] However, due to the characteristics of miscellaneous components, high moisture content, and low calorific value in our country's urban waste, its water content is generally above 50%, and its average calorific value is only low, especially in the southern region. incinerate. [0004] The incinerator generally uses a grate for waste incineration. Due to the mechanical design of the grate, the incinerator cannot be closed, and the harmful gas in the fly ash will inevitably be discharged during incineration; if the waste is not closed for incineration, the temperature is low, and the waste is not fully burned. British harmfu...

Claims

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Application Information

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IPC IPC(8): B09B3/00
CPCY02W30/58
Inventor 李凤山杨涛毕宏
Owner 李凤山
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