Roller fire grate garbage incinerator and preheating combustion method

A waste incinerator, drum furnace technology, applied in the direction of combustion method, combustion type, combustion equipment, etc., can solve the problems of insufficient drying of garbage, poor turning effect, insufficient drying section, etc., to achieve stable garbage combustion, increase combustion temperature, The effect of reducing pollution emissions

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

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the existing garbage incineration technology, such as insufficient drying section, insufficient drying of garbage before combustion, and poor turning effect, and prov

Method used

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  • Roller fire grate garbage incinerator and preheating combustion method
  • Roller fire grate garbage incinerator and preheating combustion method
  • Roller fire grate garbage incinerator and preheating combustion method

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Embodiment approach

[0025] figure 1 It is a schematic diagram of the overall structure of the drum grate garbage incinerator provided by the present invention. Air nozzle 28, first channel 19, second channel 20, third channel 21, furnace water wall 15. The drum grate 31 comprises some drum groups 34, and each drum group is made up of 3~5 drums 33 (referring to image 3 ). Each roller set 34 is driven separately via a transmission 57 . The drum grate 31 is divided into two parts, the dry combustion section 3 and the burnout section 1, according to its position. The dry combustion section 3 is located at the front of the drum grate 31 and is arranged obliquely, and the burnout section 1 is located at the rear of the drum grate and is arranged horizontally. Each drum group 34 is configured with a primary air distribution bin air chamber 2 , and the drum 33 is composed of a drum mandrel 54 , spokes 52 , and a transmission device 57 . In order to prolong the drying process, a drying grid 6 is set...

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Abstract

The invention discloses a roller type garbage incinerator and a preheating combustion method, belonging to garbage incineration equipment and technology used in the technology of solid waste treatment. A roller fire grate serves as a combustion device and is combined with a water cooled wall, a hearth, a superheater, an economizer, an air preheater and the like to form the technology and the device capable of processing garbage and recovering heat energy thereof. The roller fire grate is characterized in that the front part of the roller fire grate is provided with a preheating and drying grid which can fully preheat and dry garbage and is favorable for garbage to fully combust on the roller fire grate. The roller fire grate is divided into a drying and combusting section and an after-combustion section, wherein the drying and combusting section is aslant arranged in the stair-stepping mode, and the after-combustion section is arranged horizontally. The side wall of the hearth is provided with an oxygen-enriched air nozzle; according to the conditions of garbage heat value, moisture content and the like, oxygen-enriched air is introduced into the hearth by the oxygen-enriched air nozzle for supporting combustion to improve the garbage combustion temperature.

Description

technical field [0001] The invention relates to combustion equipment, in particular to a drum grate garbage incinerator for municipal domestic garbage incinerators and a preheating combustion method thereof. Background technique [0002] In the past 20 years, my country's economy has developed rapidly, the scale of cities has continued to expand, and the process of urbanization has been rapid. According to statistics, the proportion of my country's urban population has increased from 27% in 1991 to 43% in 2005, and the number of cities has increased from 353 in 1986 to 657 in 2005. With the process of urbanization and the expansion of scale, the increase of urban population, the opening of the market, the change of residents' consumption structure and the development of tourism, the generation and accumulation of urban garbage have increased year by year. It is predicted that by 2030, my country's waste removal volume will reach 185-203 million tons. In the past, landfill w...

Claims

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Application Information

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IPC IPC(8): F23G5/04F23G5/44F23G5/46F23L15/00F23L7/00
CPCY02E20/34
Inventor 张衍国李清海康建斌王兆军于培锋
Owner TSINGHUA UNIV
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