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Microwave heating oil-free directly igniting burner for pulverized-coal fired boiler

An ignition burner, microwave heating technology, applied in burners, burners burning powder fuel, combustion ignition and other directions, can solve the problems of large maintenance workload of fuel system, reduce power generation economy, increase power generation cost, etc. Long-term stable operation, small daily maintenance, and fuel saving effect

Inactive Publication Date: 2006-11-08
史更
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of oil used for ignition and stable combustion greatly increases the cost of power generation and reduces the economy of power generation. The maintenance workload of the fuel system is heavy, and the co-combustion of oil and coal is likely to produce a large amount of NOx and SOx, causing serious environmental pollution.

Method used

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  • Microwave heating oil-free directly igniting burner for pulverized-coal fired boiler
  • Microwave heating oil-free directly igniting burner for pulverized-coal fired boiler

Examples

Experimental program
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Embodiment Construction

[0014] A pulverized coal boiler microwave heating oil-free direct ignition burner, it has a power supply system, cooling water system and igniter body, such as figure 1 , figure 2 As shown, the igniter body has the first stage of the igniter, the second stage of the igniter, and the third stage of the igniter. A microwave heating layer (1) is provided on the outside, and a sealing gasket (4) is provided outside the outlet of the pipe body (8). The pulverized coal outlet (2), the third stage of the igniter has a third stage ignition chamber (11), the third stage pulverized coal outlet (3), the second stage igniter and the third stage igniter are arranged inside the pulverized coal splitter plate (6), and the third stage The secondary air chamber (5) is arranged at the outlet of the primary igniter.

[0015] The power supply system adopts adjustable alternating current, and microwaves are generated by the power supply to heat the tube body 8 sections or the whole section.

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Abstract

The microwave heated oil-free directly igniting burner for pulverized coal boiler includes one power source system, one cooling water system and one igniter body. The igniter body has one first stage, one second stage and one third stage, the first stage has coal powder inlet and pipe with microwave heating layer and gasket; the second stage has primary air-coal powder inlet, igniting chamber, coal powder outlet and coal powder splitting plate; and the third igniter has igniting chamber, coal powder outlet, coal powder splitting plate and secondary air chamber. The present invention has the advantages of cold ignition and stable combustion without need of oil, gas and other auxiliary fuel, convenient regulation, stable running, low cost, etc.

Description

technical field [0001] The invention relates to a pulverized coal boiler, in particular to a microwave heating oil-free direct ignition burner for a pulverized coal boiler. Background technique [0002] Coal-fired thermal power generation is the main power generation method adopted in my country at present. In my country, the installed capacity of coal-fired generators accounts for about 70% of the total installed capacity in the country. The start, stop and stable combustion of large coal-fired boilers consume a lot of fuel. The traditional way of igniting boilers in power plants is oil gun ignition. When the boiler is started, the fuel gun is first lit. After the oil burns in the furnace for a certain period of time, the furnace is heated to the ignition temperature of the pulverized coal. At this time, the pulverized coal is sprayed into the furnace for mixed combustion with kerosene. When the boiler reaches more than 50% load and the pul...

Claims

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Application Information

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IPC IPC(8): F23D1/00F23Q7/00F23Q13/00
Inventor 刘岩郭金鹏
Owner 史更
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