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The partition model of garbage grate incinerator and the method of distinguishing each area

A zoning model, the technology of garbage furnace, applied in the direction of combustion method, combustion type, incinerator, etc.

Active Publication Date: 2016-03-02
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is a lack of calculation models for MSW combustion in China

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  • The partition model of garbage grate incinerator and the method of distinguishing each area
  • The partition model of garbage grate incinerator and the method of distinguishing each area
  • The partition model of garbage grate incinerator and the method of distinguishing each area

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Embodiment Construction

[0049] The waste grate incinerator is subdivided into 4 zones, namely the drying zone A in the bed, the pyrolysis zone B, the burnout zone C and the volatile matter combustion zone D in the free section of the furnace;

[0050] Table 1: Industrial analysis, elemental analysis and lower calorific value of waste

[0051]

[0052] 1) Establish partition model

[0053] Municipal solid waste contains a variety of organic components, and its combustion process cannot be a single form of combustion. The mixing process of its heterogeneous combustion occurs at two levels: the first level is in the bed on the grate. Combustion, that is, in the bed material formed by solid accumulation on the continuously moving grate; the second level is the combustion process in the upper free section of the bed, and the volatiles and some particles released by thermal decomposition rise into the bed with the airflow The free section of the furnace above the upper layer is strongly mixed with the ...

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Abstract

The invention discloses a partitioning model for a garbage incinerator with a grate and a distinguishing method for various zones. A partitioning method includes subdividing the incinerator with the garbage grate into four zones including a drying zone A in a bed, a pyrolysis zone B, a burnout zone C and a volatile matter combustion zone D of a furnace free section; computing the density of heat flow of the drying zone A and the drying time; computing pyrolytic reaction rate of the pyrolysis zone B and the volatile matter separation time; computing combustion time of the volatile matter combustion zone D; and computing the burnout time of the burnout zone C. The corresponding model is built by means of partitioning the urban domestic garbage incinerator with the grate according to combustion characteristics of garbage, and a complete analysis method is displayed, is favorable for comprehending garbage incineration and combustion technology and can also provide a reference for designing and running urban domestic garbage incinerators with grates.

Description

technical field [0001] The invention relates to the field of boilers in thermal energy engineering, in particular to a partition model of a waste grate incinerator and a method for distinguishing each district. Background technique [0002] With the development of the economy and the improvement of people's living standards, the output of urban domestic waste has increased rapidly, and waste incineration has shown a momentum of rapid growth in my country. In recent years, large waste incineration plants have been built or are being planned to be built in Guangdong, Jiangsu, Zhejiang and other places. Municipal solid waste has the characteristics of multi-components, multi-forms, high moisture, high volatile matter, low calorific value, and low fixed carbon, so the design and calculation of municipal solid waste incinerators and waste heat boilers have their particularities. [0003] The combustion process of municipal solid waste is not a single form of combustion, but a mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00F23G5/00
Inventor 马晓茜唐玉婷谢泽琼
Owner SOUTH CHINA UNIV OF TECH