Oxygen combustion-supporting system for grate-type garbage incinerator

A technology of waste incinerator and combustion-supporting system, which is applied to incinerators, combustion methods, combustion types, etc., can solve the problems of poor waste burnout rate, increase waste incineration cost, and change calorific value, etc., to improve combustion intensity and combustion. The effect of speed, shortening the ignition time, and stabilizing combustion in the furnace

Inactive Publication Date: 2020-02-07
SHANXI UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, due to the characteristics of large moisture differences and large calorific value changes in domestic waste, in the actual operation of waste incinerators, combustion instability, poor waste burnout rate, and low flue gas temperature often occur. requirements
The existing technology mainly solves this problem by using an oil gun to support combustion. Although it can stabilize combustion and increase the temperature of flue gas, it greatly increases the cost of waste incineration

Method used

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  • Oxygen combustion-supporting system for grate-type garbage incinerator

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Embodiment Construction

[0019] Such as figure 1 As shown, the present invention provides an oxygen combustion-supporting system for a grate type garbage incinerator, including a drying section fire grate 9, a burning section fire grate 10, and a burnout section fire grate 12 installed at the bottom of the waste incinerator in sequence. , the combustion section bellows 11 is installed below the combustion section grate 10, the burnout section bellows 13 is installed below the burnout section fire grate 12, the entrance of the drying section fire grate 9 is connected with the outlet of the metering type garbage feeder 3, An oxygen injector group 5b is installed at a position close to the combustion section fire grate 10 in the combustion section bellows 11, and the inlet of the oxygen injector group 5b communicates with the oxygen main pipe 1 through a pipeline equipped with an oxygen regulating valve group 2a. An oxygen injector 5a is installed near the position of the burnout section fire grate 12 in...

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Abstract

The invention discloses an oxygen combustion-supporting system for a grate-type garbage incinerator. The system comprises a drying section grate, a burning section grate and a burnout section grate which are sequentially arranged at the bottom of the garbage incinerator; the inlet of the drying section grate is connected to the outlet of a metering garbage feeder; an oxygen injector group is arranged at the position, close to the burning section grate, in a burning section air box; an oxygen injector is arranged at the position, close to the burnout section grate, in a burnout section air box;a secondary combustion-supporting air nozzle is arranged in the middle of the garbage incinerator, and an oxygen injector is arranged in the secondary combustion-supporting air nozzle; and a flue gasanalyzer and the outlet of a thermocouple are connected with a control cabinet through cables, a thermocouple group is arranged on the wall surface at different positions of the burning section grate, and the outlet of the thermocouple group is connected with the control cabinet through a cable. According to the system, oxygen is used for replacing fuel oil, the garbage combustion is strengthened, the combustion temperature is improved, and the operation cost of the garbage incinerator is reduced.

Description

technical field [0001] The invention relates to the field of domestic garbage incineration with mechanical grate, in particular to an oxygen combustion-supporting system for a grate type garbage incinerator. Background technique [0002] During the incineration process of domestic waste, a large amount of toxic and harmful substances will be released, such as HCL, dioxin (PCDD) and furan (PCDF), etc., when the residence time and combustion temperature of these substances in the waste incinerator meet certain conditions , can further undergo oxidative combustion reactions, making it finally transformed into harmless substances. Under normal circumstances, toxic and harmful flue gas stays in the high temperature area above 850°C for more than 2s, which can eliminate its toxicity and meet the emission requirements of waste incineration flue gas. However, due to the characteristics of large moisture differences and large calorific value changes in domestic waste, in the actual ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/00F23G5/44F23G5/50
CPCF23G5/002F23G5/44F23G5/50
Inventor 闫高程
Owner SHANXI UNIV
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