Burning system for directly burning low-volatilization powder carbocoal by using high-temperature air

A low-volatile, high-temperature air technology is applied to the combustion of gaseous fuel and powder fuel, the combustion of block fuel and gaseous fuel, and the combustion of block fuel and powder fuel. It can solve the problems of low combustion efficiency, High pollutant emissions and other issues, to achieve high combustion efficiency, high coke burnout, low NOx emissions

Inactive Publication Date: 2010-03-10
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of low combustion efficiency and high pollutant emission in the existing low-volatile powder semi-coke combustion device, and to provide a method of using high-temperature air to directly burn low-volatile powder semi-coke combustion system

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  • Burning system for directly burning low-volatilization powder carbocoal by using high-temperature air

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specific Embodiment approach 1

[0010] Specific implementation mode one: combine figure 1 Describe this embodiment, a kind of combustion system that adopts high-temperature air to directly burn low-volatile powder semi-coke in this embodiment consists of a furnace 1 covered with a combustion belt, a swirl burner 2, a gas mixer 3, and a high-temperature air Preheating device 4, flue gas waste heat recovery device 5, low temperature air preheater 6, powder feeding device 7, flue gas recirculation fan 8, inlet air flow channel 9, two low temperature flue gas flow channels 10, hot air flow channel 11. The primary and secondary air flow path 12, the high-temperature flue gas flow path 13, the tail flue gas flow path 14, the air intake air path 15 and the combustion air flow path 16; the swirl burner 2 is installed on the On the outer wall of the inlet end 1-2 of the furnace 1 with the hygienic combustion belt, the powder feeding device 4 is connected to the swirl burner 2, and the flue gas outlet end 1-1 of the f...

specific Embodiment approach 2

[0011] Specific implementation mode two: combination figure 1 Describe this embodiment, the inlet air flow channel 9, two low-temperature smoke flow channels 10, hot air flow channel 11, primary and secondary air main flow channel 12, high-temperature smoke flow channel 13, tail smoke flow channel Both the channel 14 and the combustion-supporting air channel 16 adopt high-temperature-resistant lining channels. Such setting ensures the airtightness of the runner under high temperature. Other compositions and connections are the same as in the first embodiment.

[0012] The working process of the combustion system of the present invention is as follows (see figure 1 ): the high-temperature flue gas at the flue gas outlet end 1-1 of the furnace 1 covered with a combustion belt passes through the high-temperature flue flow channel 13 and directly enters the high-temperature air preheating device 4 to exchange heat with the heated air and flue gas mixture, and the The mixed gas ...

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Abstract

The invention discloses a burning system for directly burning low-volatilization powder carbocoal by using high-temperature air, relating to a burning system for directly burning low-volatilization powder carbocoal, and solving the problems of low burning efficiency and high pollutant discharge in the prior burning device for the low-volatilization powder carbocoal. A hearth is communicated with ahigh-temperature air pre-heating device through a high-temperature flue gas channel; two ends of a flue gas residual heat recycling device are communicated with the flue gas flow parts of the high-temperature air pre-heating device and a low-temperature air pre-heater through a low-temperature flue gas channel; an outlet flue of the low-temperature air pre-heater is communicated with a gas mixerthrough a tail flue gas channel; the gas mixer is communicated with an air flow part of the low-temperature air pre-heater through an inlet air flow channel; the air flow part of the low-temperature air pre-heater is communicated with the high-temperature air pre-heating device through a secondary air flow channel; and the high-temperature air pre-heating device is communicated with a rotary flowburner through a primary air flow channel. The invention has advantages of high burning efficiency and low pollutant discharge rate.

Description

technical field [0001] The invention relates to a combustion system for directly burning low volatile powder semi-coke. Background technique [0002] For the gasification semi-coke (fly ash) obtained under the secondary dust collector of the gasification system widely used in the industry, the particle size is similar to that of coal powder particles (40 μm ~ 50 μm), and the carbon content in the particles is relatively high (F ad =30%~40%), very low volatile content (V daf <5%), while the calorific value of the fuel is low (Q net，ar =11MJ / kg~13MJ / kg). Since the fine powder particles have experienced a long period of high-temperature pyrolysis or gasification reaction in the gasifier, there is no or only a small amount of volatile matter in the gasification fly ash residue, and the combustion reaction activity of combustible substances is low. Effective direct combustion and waste heat recovery process to make full use of the heat contained in the gasification semi-cok...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C5/32F23C7/00
CPCY02E20/34
Inventor 孙锐王毅吴少华赵霄鹏廖坚苏春生朱群益
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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