Breeze combustion device and method
A combustion device, pulverized coal combustion technology, applied in the direction of combustion method, burner for burning powder fuel, burner, etc.
Inactive Publication Date: 2009-02-18
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] reference figure 1 , Is a longitudinal cross-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 metal rods; it can also be metal thin rods or wires), which are arranged concentrically The metal outer tube 2 outside the metal tube 1 serves as a grounding electrode, and a plurality of insulating, heat-resistant and wear-resistant supports 3 are arranged at the entrance and exit of the combustion device, between the metal tube 1 and the outer tube 2.
[0025] Also refer to figure 2 Is a cross-sectional view of A-A of a preferred embodiment of the present invention, image 3 It is an A-A cross-sectional view of another preferred embodiment of the present invention. The outer wall of the central metal tube 1 is provided with a plurality of metal conductors with ti...
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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 burning coal to generate power in power stations. In industrial boilers, coal is also mainly used to heat boilers. However, the coal used in my country’s power station boilers and industrial boilers is complex and changeable. The actual coal used in most boilers is very different from the boiler design coal. When the change in coal types and poor coal quality cause high loads during the operation of the boiler, Slagging in the boiler furnace burner area. The furnace outlet temperature increases, the convection superheater is over-temperature, and the amount of desuperheating water increases. When the boiler is operating at low load, the pu...
Claims
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Inventor 刘伟军张书华
Owner SHANGHAI UNIV OF ENG SCI