Breeze combustion device and method
A combustion device, a technology of pulverized coal combustion, applied in the direction of combustion methods, burners for burning powder fuel, burners, etc.
Inactive Publication Date: 2012-01-04
SHANGHAI UNIV OF ENG SCI
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Problems solved by technology
These two types of burners realize their functions through structural effects, without any additional force on the fuel powder and the pretreatment effect of primary air flow intensified combustion
Method used
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[0024] refer to figure 1 , is a longitudinal sectional view of a preferred embodiment of the present invention. The combustion device of the present invention includes a metal tube 1 arranged in the center of the combustion device, as a corona electrode (it can also be other cylindrical metal conductors, such as a metal rod; it can also be a thin metal rod or wire), concentrically sleeved The metal outer sleeve 2 outside the metal pipe 1 is used as a ground electrode, and is provided at the inlet and outlet of the combustion device, and a plurality of insulating, heat-resistant and wear-resistant supports 3 between the metal pipe 1 and the outer sleeve 2 .
[0025] Also refer to figure 2 A-A sectional view of a preferred embodiment of the present invention, image 3 It is an A-A sectional view of another preferred embodiment of the present invention. The outer wall of the central metal tube 1 is distributed with a plurality of metal conductors with pointed characteristics ...
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The invention provides a pulverized coal combustion device and the combustion method thereof; high voltage is applied in the combustion to realize the directional concentration and the dense-thin separation after the pulverized coal is charged; the fuel airflow is modified to realize the double intensified combustion and the pollution control. The pulverized coal combustion device comprises a cylindrical metal conductor arranged at the center of the combustion device, used for forming the corona and used as the corona electrode; the pulverized combustion device also comprises a metal outer sleeve nested on the cylindrical metal conductor and used as the earth pole. The combustion method adopted by the combustion device includes that the pulverized coal is fed into the combustion device sequentially through the primary air pipe; the high voltage is applied between the metal conductor and the outer sleeve; thereby, the uneven strong electric field is formed between the central metal conductor and the outer sleeve to enable the inflow pulverized coal airflow to generate the circumferential direction and directional concentration and modification after the pulverized coal is charged and under the effect of the uneven intensified electric field.
Description
technical field [0001] The invention relates to a pulverized coal combustion device and a combustion method thereof, in particular to a pulverized coal combustion device and a combustion method for applying high voltage in the combustion device. Background technique [0002] At present, my country's electricity consumption is mainly realized by coal-fired power generation, and industrial boilers are also mainly used to heat the boilers. However, the coal used in power station boilers and industrial boilers in my country is complex and changeable. The actual coal used in most boilers is very different from the coal used in boiler design. Slag formation in the burner area of the boiler furnace. The furnace outlet temperature is increased, the convection superheater is overheated, and the amount of desuperheating water is increased. When the boiler is running at low load, the combustion of the pulverized coal burner is unstable, and oil must be used for combustion, which ser...
Claims
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IPC IPC(8): F23D1/00
Inventor 刘伟军张书华
Owner SHANGHAI UNIV OF ENG SCI