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High-temperature garbage incineration grate furnace system based on material circulation and working method

A waste incinerator and material recycling technology, applied in the direction of combustion method, incinerator, combustion type, etc., to achieve the effect of long residence time, reducing blockage, improving efficiency and distance

Pending Publication Date: 2020-05-19
HUANENG CLEAN ENERGY RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system does not involve specific solutions for heating high-temperature air, as well as the relationship between the overall combustion temperature and the heavy metals and dioxins produced

Method used

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  • High-temperature garbage incineration grate furnace system based on material circulation and working method
  • High-temperature garbage incineration grate furnace system based on material circulation and working method

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment, and its content is explanation of the present invention rather than limitation:

[0036] A high-temperature waste incineration grate furnace system based on material circulation of the present invention, such as figure 1 , including grate furnace, primary fan 1, primary air steam preheater 2, air preheater 3, economizer 4, flue gas treatment system 5, chimney 6, conveying fluidization fan 9 and sorting machine 11;

[0037] The primary fan 1 is connected to the primary air steam preheater 2, the primary air steam preheater 2 is connected to the air inlet of the air preheater 3, and the air outlet of the air preheater 3 is connected to the primary air inlet of the grate furnace; The hearth 8 of the grate is provided with a sand material inlet 13, and the sand material inlet 13 can be arranged above the grate drying section. The tail heating su...

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Abstract

The invention discloses a high-temperature garbage incineration grate furnace system based on material circulation and a working method, and belongs to the technical field of garbage incineration andclean combustion. The system involves a grate furnace, a primary air fan, a primary air steam preheater, an air preheater, an economizer, a flue gas treatment system, a chimney, a conveying fluidifying fan and a sorting machine. Fine sand materials are added in the grate furnace to serve as a heat carrying medium, so that combustion in the grate furnace is enhanced, the uniformity of the whole temperature in the furnace is improved, and formation of a concentrated high-temperature area is avoided; and meanwhile, the steam preheater and the air preheater are used for heating primary air, so that the combustion intensity in the grate furnace is further improved, local low-temperature areas are reduced, and discharge of harmful substances is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of waste incineration and clean combustion, and in particular relates to a high-temperature waste incineration grate furnace system and working method based on material circulation. Background technique [0002] In 2016, the national domestic garbage removal volume was about 215.05 million tons. A large amount of solid waste has brought great harm to the environment, mainly manifested as land occupation, air pollution, soil and water pollution, and the damage caused is difficult to recover. At present, although the proportion of waste incineration in my country is rapidly increasing, due to the ineffective classification of waste sources in my country, the combustion process will produce smoke, smoke, fly ash and slag, which contain a large amount of dioxins and heavy metal elements. These pollutants are extremely harmful to the atmosphere, soil, ocean and freshwater ecosystems, especially they can also be ...

Claims

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Application Information

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IPC IPC(8): F23G5/00F23G5/44F23G5/46F23J1/00F23J15/02F23J15/06F23L15/00F28D20/00
CPCF23G5/002F23G5/44F23G5/46F23J1/00F23J15/02F23J15/06F23L15/00F28D20/0056Y02E20/34Y02E60/14
Inventor 袁野肖平高洪培时正海王海涛孙献斌
Owner HUANENG CLEAN ENERGY RES INST
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