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Method for achieving harmless disposal of garbage fly ash by means of rotary kiln technology

A garbage fly ash, rotary kiln technology, applied in the direction of combustion method, combustion technology mitigation, incinerator, etc., to achieve the effect of good environmental conditions, easy concentration and collection

Inactive Publication Date: 2017-03-22
重庆兴满和企业管理咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no technology capable of harmless treatment and comprehensive utilization of waste fly ash.

Method used

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  • Method for achieving harmless disposal of garbage fly ash by means of rotary kiln technology

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Experimental program
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Effect test

Embodiment

[0024] The following is a detailed description of the method of using the rotary kiln technology to dispose of garbage fly ash harmlessly:

[0025] as attached figure 1 Shown: mix garbage fly ash into chlorine absorbent and combustion accelerant in a certain proportion;

[0026] Put the prepared materials into the mixer and mix them evenly;

[0027] Put the mixed material into the buffer bin and evenly enter the disc pelletizer, and add organic binder to pelletize at the same time, the pellet size is controlled at 6-12mm;

[0028] The finished fly ash pellets are sent to the rotary kiln head after being sieved by a roller screen, and the garbage fly ash pellets ignited by the ignition system are roasted in the rotary kiln and move to the kiln tail during the rotation of the rotary kiln. When reaching the end of the kiln, the combustion accelerant in the garbage fly ash pellets has been completely burned, and the residues of harmful substances such as dioxin in the garbage fl...

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Abstract

The invention provides a method for achieving harmless disposal of garbage fly ash by means of a rotary kiln technology. According to the method, the rotary kiln technology is utilized, the processes of burdening, uniform mixing, pelleting, screening, feeding, igniting, calcining, residue collecting, flue gas purifying and the like are used for achieving harmless disposal of the garbage fly ash, harmless disposal is achieved, and meanwhile residues can be used as building materials, so that the purposes of harmlessness, stabilization, reduction and reclamation of the garbage fly ash are achieved.

Description

technical field [0001] The invention belongs to the field of solid waste treatment, and in particular relates to a method for harmlessly disposing of garbage fly ash by utilizing the rotary kiln technology. Background technique [0002] Domestic waste incineration fly ash refers to the residue collected in the flue gas purification system of waste incineration power plants. Fly ash accounts for about 10% of the total waste incinerated. Domestic waste incineration fly ash contains a large amount of toxic and harmful substances such as heavy metals and dioxins. The International Center for Cancer Research of the World Health Organization has identified dioxins as a primary carcinogen. According to statistics, as of now, more than 300 waste incineration power plants have been built nationwide, with a daily processing capacity of more than 300,000 tons of domestic waste. It is estimated that the annual production of waste incineration fly ash is about 3.2 million tons, and it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/00F23J15/06F23J15/04F23J15/02
CPCF23G7/00F23G2201/701F23G2202/10F23G2203/20F23G2209/30F23G2900/50206F23J15/02F23J15/04F23J15/06F23J2215/301F23J2219/30F23J2700/001Y02E20/30
Inventor 龚文渠
Owner 重庆兴满和企业管理咨询有限公司
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