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Flue gas treatment method and system for reducing dioxin content in waste incineration

A flue gas treatment system and flue gas treatment technology, applied in combustion methods, incinerators, combustion types, etc., can solve the problems of up-to-standard emission, complex dioxin generation process, difficult dioxin concentration, etc., and reduce emissions. Effect

Inactive Publication Date: 2018-02-02
HANLANLVDIAN SOLID WASTE TREATMENT (FOSHAN) CO LTD 2ND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the complexity of the formation process of dioxins, the concentration of dioxins in the actual flue gas emitted by most domestic waste incineration plants is difficult to meet the emission standards all the time.

Method used

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  • Flue gas treatment method and system for reducing dioxin content in waste incineration
  • Flue gas treatment method and system for reducing dioxin content in waste incineration
  • Flue gas treatment method and system for reducing dioxin content in waste incineration

Examples

Experimental program
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Effect test

Embodiment 1

[0041] A flue gas treatment method for reducing dioxin content in waste incineration, using a flue gas treatment system for flue gas purification treatment, specifically comprising:

[0042] Steps to control the load of the boiler: Unload the garbage from the hopper into the garbage incinerator and drop it on the grate, and at the same time pass through the primary air and the secondary air, and the garbage will be incinerated for 1.5 hours under sufficient combustion gas. During the process, the boiler load is controlled to be 50t / h; it also includes controlling the temperature of the waste incinerator to be greater than 850°C, the time for flue gas to stay in the waste incinerator to be greater than 2s, and the ratio of primary air volume to secondary air volume to be 3:1 .

[0043] Among them, the waste incinerator is a Mitsubishi Martin reverse-push grate furnace with a single processing capacity of 500t / d, and is also equipped with a 15MW steam turbine generator set.

[...

Embodiment 2-3 and comparative example 1-4

[0048] The operating steps of Examples 2-3 and Comparative Examples 1-4 refer to the processing method of the above-mentioned Example 1, wherein the design of the operating parameters refers to Table 1, and "-" indicates that the parameter is not controlled.

[0049] The operating parameters of each embodiment of table 1

[0050]

[0051]

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PUM

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Abstract

The invention discloses a flue gas treatment method and system for reducing dioxin content in waste incineration. The flue gas treatment method comprises the steps of controlling boiler load capacity,controlling secondary wind volume, controlling the adding amount of activated carbon and controlling cloth bag pressure difference. According to the flue gas treatment method, a study finds that thefour running parameters of the boiler load capacity, secondary wind volume, the adding amount of the activated carbon and the four operating parameters of the bag pressure difference have an related affect on the exhausting amount of dioxin, and if the four operating parameters are jointly controlled to be within the a certain range, an optimal control working condition parameter can be obtained,and it is ensured that the content of the flue gas dioxin can continuously reach the emission standard.

Description

technical field [0001] The invention relates to a domestic garbage incineration treatment technology, in particular to a flue gas treatment method and system for reducing dioxin content in garbage incineration. Background technique [0002] At present, with the continuous rapid growth of my country's economic construction and the continuous improvement of people's living standards, the increasing domestic garbage and production process waste has become a social problem that pollutes the environment and affects people's health. Dioxin is actually a general term for two types of tricyclic aromatic organic compounds, which are connected by 2 or 1 oxygen atom to 2 benzene rings substituted by multiple chlorine atoms, which are called polychlorinated dibenzo-p-dioxins respectively. (referred to as PCDDS) and polychlorinated dibenzofurans (abbreviated as PCDFs), the environmental science circles collectively refer to these two types of compounds with similar structures and propert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/00F23G5/44F23G5/46F23G5/50F23J15/02
CPCF23G5/006F23G5/44F23G5/46F23G5/50F23G2206/203F23J15/025F23J2217/10F23J2217/103Y02E20/12
Inventor 龚丽芳罗国衡韦雪峰谭泳华
Owner HANLANLVDIAN SOLID WASTE TREATMENT (FOSHAN) CO LTD 2ND
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