Waste incineration fly ash plasma fusing method

A technology of waste incineration fly ash and plasma, applied in chemical instruments and methods, solid waste removal, transportation and packaging, etc. Resource utilization, etc.

Pending Publication Date: 2019-08-20
EVERBRIGHT ENVIRONMENTAL TECH EQUIP CHANGZHOU +2
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  • Claims
  • Application Information

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Problems solved by technology

However, in the waste incineration flue gas purification process, a large amount of slaked lime is sprayed into the dry deacidification process to increase the content of calcium oxide in the fly ash, resulting in an increase in the melting point temperature, and the energy consumption of the fly ash treated by plasma melting t

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  • Waste incineration fly ash plasma fusing method
  • Waste incineration fly ash plasma fusing method
  • Waste incineration fly ash plasma fusing method

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[0022] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other instances, some technical features known in the art have not been described in order to avoid obscuring the present invention.

[0023] In order to provide a thorough understanding of the present invention, detailed method steps and / or structures will be set forth in the following description. Obviously, the practice of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.

[0024] It should be understood that the present invention may be embodied in different...

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Abstract

The invention provides a waste incineration fly ash plasma fusing method. The method at least comprises the following steps that step 1), a fusing additive is added into to-be-fused fly ash so as to obtain a fusing mixture; and step 2), fusion treatment is carried out on the fusing mixture so as to obtain a fusing glass body. The fusing additive comprises quartz sand, Al2O3, ZrO2 and boric acid. SiO2 and Al2O3 in quartz sand serve as a forming body of a network structure of a fusing glass body, ZrO2 serves as a nucleating agent, so that the surface crystallization is converted into the overallcrystallization under the action of an induced phase splitting mechanism of the glass body, and the boric acid is used as a fluxing agent to form a low eutectic point with the to-be-fused fly ash, sothat the fusing temperature of the to-be-fused fly ash is reduced.

Description

technical field [0001] The invention relates to a method for plasma melting of waste incineration fly ash, a melting additive used in the method and its corresponding formula. Background technique [0002] There are three main methods of waste disposal: sanitary landfill, composting and incineration. Compared with sanitary landfill and composting, waste incineration can better realize the harmlessness, reduction and resource utilization of waste disposal. Currently, Singapore, Japan, Denmark and Switzerland account for more than 70% of the total waste incineration. As of 2017, more than 300 domestic waste incineration power plants have been built and put into operation in my country, and the national incineration capacity is 304,000 t / d; it is estimated that by 2020, the waste incineration capacity will be 590,000 t / d, accounting for 300,000 t / d of total waste treatment. More than 50% of the amount. After incineration of domestic waste, a large amount of fly ash will be pr...

Claims

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Application Information

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IPC IPC(8): B09B3/00
CPCB09B2101/30B09B3/40
Inventor 胡明虎训徐鹏程王婷婷宗肖宫臣齐景伟张亮李小明
Owner EVERBRIGHT ENVIRONMENTAL TECH EQUIP CHANGZHOU
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