Intermediate-frequency heating and stable combustion coal powder burner and use method

A pulverized coal burner and burner technology, which is applied in the direction of combustion methods, burners for burning powder fuel, burners, etc., can solve the problems that the load cannot be reduced too low, and low calorific value coal cannot be used, so as to achieve increased stability Effect

Pending Publication Date: 2019-05-14
山西瓦特网联环能科技有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems that the load of the existing pulverized coal burner cannot be reduced too low and coal with low calorific value cannot be used, the present invention provides a medium-frequency heating stable combustion pulverized coal burner and its use method

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  • Intermediate-frequency heating and stable combustion coal powder burner and use method
  • Intermediate-frequency heating and stable combustion coal powder burner and use method

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Embodiment Construction

[0013] In order to achieve the above object, the present invention provides the following scheme: a medium-frequency heating stable combustion pulverized coal burner, including 1, a pulverized coal burner shell, 2, a primary air inlet, 3, a non-metallic pulverized coal partition plate, 4 . Metal pulverized coal partition, 5. Intermediate frequency heating coil, 6. Terminal post, 7. Second and third stage pulverized coal partition, 8. Secondary air box, 9. Secondary air inlet, 10. Secondary cyclone streamer.

[0014] In the middle part of the pulverized coal burner shell 1, the first-level and second-level pulverized coal separation plates and the second-level and third-level pulverized coal separation plates 7 are arranged in sequence. The pulverized coal partition plate 7 is downstream and peripheral, and divides all pulverized coal into primary pulverized coal, secondary pulverized coal and tertiary pulverized coal. The primary and secondary pulverized coal partitions inclu...

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Abstract

The invention belongs to the technical field of burners, and particularly relates to an intermediate-frequency heating and stable combustion coal powder burner and a use method to solve the problems that the load of a coal powder burner cannot be lowered too much, and lower calorific value coal cannot be used. The intermediate-frequency heating and stable combustion coal powder burner comprises acoal powder burner shell, nonmetal coal powder separation plates, metal coal powder separation plates, intermediate-frequency heating coils, secondary and third coal powder separation plates, a secondary air box and a secondary air swirter, wherein a primary air inlet is arranged at the upstream position of the coal powder burner shell, the nonmetal coal powder separation plates and the secondaryand third coal powder separation plates are sequentially arranged in the middle of the coal powder burner shell from the upstream position to the downstream position, and the metal coal powder separation plates are arranged on the inner sides of the nonmetal coal powder separation plates; the intermediate-frequency heating coils are arranged between the nonmetal coal powder separation plates and the metal coal powder separation plates; the intermediate-frequency heating coils are connected with binding posts; the secondary air box is arranged at the downstream position of the exterior of the coal powder burner shell and provided with a secondary air inlet; and the secondary air swirter is arranged at an outlet of the secondary air box. The stability and adaptability of the coal powder burner are increased.

Description

technical field [0001] The invention belongs to the technical field of burners, in particular to a medium-frequency heating stable combustion pulverized coal burner and a use method thereof. Background technique [0002] In the prior art, if it is desired to improve the stability of the pulverized coal burner, it is usually achieved by adding an ignition device or inputting auxiliary fuel. For example, a pulverized coal burner equipped with a plasma ignition device can improve combustion stability, but because the cathode material of the plasma ignition device has a very short service life, it cannot be used for a long time. For example, a pulverized coal burner equipped with a micro-oil ignition device can also improve combustion stability, but the fuel consumption is large and the operating cost is high; and when the ignition oil gun is used, the diesel combustion is not complete, and the flue gas purification equipment at the tail of the boiler cannot be put into use , u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/02
Inventor 江河荣国林萧琦
Owner 山西瓦特网联环能科技有限公司
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