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Large-scale garbage incinerator

A waste incinerator, a large-scale technology, applied in the direction of incinerators, combustion methods, combustion types, etc., can solve problems such as insufficient combustion, affecting the long-term stable operation of waste incinerators, reducing the flow area of ​​overhead flue, etc., to achieve reduction Fly ash deposition, beneficial to the effect of long-term stable operation

Inactive Publication Date: 2010-07-28
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high moisture content of domestic waste, it is easy to cause defects such as insufficient combustion and serious smoke pollution in large-scale waste incineration systems
Moreover, in the process of waste incineration, when the flue gas with high concentration of smoke and dust passes through the overhead flue and exchanges heat with the superheater, the smoke and dust are easily deposited in the overhead flue, reducing the flow area of ​​the overhead flue, thereby affecting waste incineration. Stable operation of the furnace
Flue gas with high concentration of soot is also easy to form ash deposits on heat exchange surfaces such as economizers and air preheaters, thus affecting the long-term stable operation of waste incinerators

Method used

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  • Large-scale garbage incinerator
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Embodiment approach

[0014] A large-scale incinerator, including a garbage hopper 1, a furnace 2, a garbage preheating and drying device 3, an overhead flue 4, a first-level tail shaft flue 5a, a second-level tail shaft flue 5b, a bed slag outlet 6, an inclined Type air distribution plate 7, cyclone separator 9 etc. The garbage preheating and drying device is arranged at the front end of the furnace 2 of the incinerator. In a large-scale garbage incinerator, the garbage preheating and drying device is arranged in two or three stages, and the garbage hopper 1 is connected to the garbage preheating and drying device in the frontmost stage. Garbage enters the garbage preheating drying device 3 from the garbage hopper 1, and enters the furnace 2 for burning after being fully dried. The air distribution plate 7 of the incinerator is inclined to the front end of the furnace, and the inclination angle α is 20-50°. The front wall of the furnace 2 (the furnace wall on the side connected to the garbage pr...

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Abstract

The invention relates to a large-scale garbage incinerator, belonging to the field of solids waste incinerating equipment. The large-scale garbage incinerator comprises a garbage hopper, a hearth, a drying device for preheating garbage, an overhead gas flue and a tail vertical well gas flue. The drying device for preheating garbage is distributed by means of second stage or third stage; a on-grate slag discharge opening is arranged under the final-stage drying device for preheating garbage on the front wall of the hearth; the lower part of the back wall of the hearth is slantwise arranged with an inclined angle beta of 30-60 degrees; a wind distributing plate is slantwise towards the front end of the hearth with an inclined angle alpha of 20-50 degrees; and the front end of the bottom of the overhead gas flue is provided with whistle-shaped tubular blowing tubes, wherein the directions of wind outlets of the blowing tubes are accordant with the flow direction of the gas in the overhead gas flue. The two blowing tubes are symmetrically arranged. The first-stage turning place of the tail vertical well gas flue is formed into an inertia separator. The middle part of the hearth is provided with a second wind opening which enters 20.9%-30% oxygen-enriched air. The large-scale garbage incinerator can adequately dry the garbage, smoothly discharges the slag, has good material loop, and thoroughly incinerates the garbage.

Description

technical field [0001] The invention relates to a large-scale garbage incinerator, which belongs to the field of solid waste incineration equipment. Background technique [0002] In the process of waste incineration, the stable operation of large waste incinerators and the clean incineration of waste have been widely valued. Due to the high moisture content of domestic waste, it is easy to cause defects such as insufficient combustion and serious smoke pollution in large-scale waste incineration systems. Moreover, in the process of waste incineration, when the flue gas with high concentration of smoke and dust passes through the overhead flue and exchanges heat with the superheater, the smoke and dust are easily deposited in the overhead flue, reducing the flow area of ​​the overhead flue, thereby affecting waste incineration. stable operation of the furnace. Flue gas with high concentration of soot is also easy to form ash deposits on heat exchange surfaces such as econom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/04F23G5/44
CPCY02E20/34
Inventor 张衍国李清海蒙爱红康建斌于培锋王兆军
Owner TSINGHUA UNIV
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