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Plasma ignition burner for anthracite

An ignition burner and plasma technology, which is applied in the direction of burners, burners burning powder fuel, combustion ignition, etc., can solve the problems of high cost and large fuel consumption, and achieve low operating costs, convenient transformation, and simple structure Effect

Inactive Publication Date: 2012-03-28
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the boiler is running at low load, the pulverized coal combustion is unstable, and the oil gun is used to support combustion to prevent flameout; this ignition method consumes a lot of fuel, and most power plants use light diesel oil, which is very expensive

Method used

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  • Plasma ignition burner for anthracite
  • Plasma ignition burner for anthracite
  • Plasma ignition burner for anthracite

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Experimental program
Comparison scheme
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Embodiment Construction

[0019] refer to figure 1 , figure 2 In order to adopt a plasma ignition burner for anthracite of the present invention, it mainly includes a first-stage combustion cylinder 2, a second-stage combustion cylinder 3, a third-stage combustion cylinder 4, and a radially arranged coaxially arranged from inside to outside. To the plasma generator 1 extending into the first-stage combustion cylinder 2. The entrance of the first-stage combustion cylinder 2 is provided with an elbow 5 for introducing pulverized coal airflow, and the plasma generator is close to the outer wall of the elbow. The entrances of the second-stage combustion chamber 3 and the third-stage combustion chamber 4 are respectively provided with a second-stage combustion chamber volute 8 and a third-stage combustion chamber volute 9 for introducing pulverized coal airflow. The second-stage pulverized coal swirl constriction ring 6 is arranged inside the second-stage combustion cylinder 3 , and the second-stage pulv...

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Abstract

The invention relates to the technology of burning of pulverized coal in a boiler, and discloses a plasma ignition burner for anthracite. The burner comprises a first-stage combustion cylinder, a second-stage combustion cylinder, a third-stage combustion cylinder and a plasma generator radially inserted into the first-stage combustion cylinder, which are coaxially arranged from inside to outside in sequence, wherein an inlet of the first-stage combustion cylinder is provided with an elbow used for introducing pulverized coal current, and inlets of the second-stage combustion cylinder and the third-stage combustion cylinder both have a volute casing used for introducing pulverized coal current.

Description

technical field [0001] The invention relates to the pulverized coal combustion technology in boilers, in particular to a plasma ignition burner for anthracite. Background technique [0002] At present, the most common ignition method for thermal power units is to ignite with an oil gun. When the boiler is started, oil is first injected for combustion. After the furnace temperature rises to the ignition temperature of the pulverized coal flow, pulverized coal is injected for mixed combustion of oil and coal. The oil is cut off until the pulverized coal burns stably, and the ignition process is completed. When the boiler is running at low load, the pulverized coal combustion is unstable, and the oil gun is used to support the combustion to prevent flameout; this ignition method consumes a lot of fuel, and most power plants use light diesel oil, which is very expensive. According to statistics, the annual fuel consumption of thermal power units in my country is about 18 millio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D1/00F23D1/02F23Q7/02
Inventor 王树众施海华赵军
Owner XI AN JIAOTONG UNIV