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Low Nox left-right swing type direct flow coal powder burner with adjustable coal powder gradient field

A pulverized coal burner, left and right swing technology, applied in the direction of burning powder fuel burners, burners, block fuel and powder fuel combustion, etc., can solve the problem that the burner cannot swing left and right, and the jet angle of the burner cannot be adjusted And other issues

Inactive Publication Date: 2006-01-04
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that adjusting the tangential circle of primary and secondary air and delaying the mixing of primary and secondary air can adjust the coal powder gradient field in the furnace and reduce the formation of NOx in the furnace. However, the burners of existing boilers cannot swing left and right. That is, the jet angle of each burner cannot be adjusted during hot operation

Method used

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  • Low Nox left-right swing type direct flow coal powder burner with adjustable coal powder gradient field
  • Low Nox left-right swing type direct flow coal powder burner with adjustable coal powder gradient field
  • Low Nox left-right swing type direct flow coal powder burner with adjustable coal powder gradient field

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with drawings and embodiments.

[0012] Figure 1, figure 2 , image 3 As shown, the present invention includes a nozzle base 1, a nozzle body 2 and a nozzle body transmission device. The tail of the nozzle body 2 is inserted into the head of the nozzle seat 1, and the two are connected by two cylindrical pins 3, and are respectively positioned with the gasket 4 and the cotter pin 5. The tail of the nozzle body 2 is an arc-shaped structure, which can make the nozzle body 2 Swing around the cylindrical pin 3, the tail of the nozzle seat 1 is connected to the bellows 6; one end of the nozzle body transmission device includes a transmission pin 16, a universal joint 7 and a clamp iron 14, and one end of the transmission pin 16 is fixed on the lower wall of the nozzle body 2, The other end is inserted into the center hole of a universal joint 7, and is positioned with a cotter pin 15, and a universal join...

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Abstract

The low NOx exhaust left-right swing type direct flow coal powder combustor with adjustable gradient coal powder field includes nozzle seat, nozzle and nozzle driving unit. By means of separating the combustor into two parts including nozzle and nozzle seat and increasing cylindrical pin and nozzle driving unit, the present invention realizes the left-right swing of combustor and thus the hot state regulation of the jetting angle of the primary air and the secondary air, so as to create condition for putting off the mixing of the primary air and the secondary air inside the furnace and reducing generation of NOx inside the furnace.

Description

technical field [0001] The invention relates to a combustion device, in particular to a low NOx side-to-side swinging direct-current pulverized coal burner which is applied to a pulverized coal boiler arranged in a tangential circle and with an adjustable gradient field of pulverized coal. Background technique [0002] In the pulverized coal boiler arranged in a tangential circle, each corner is equipped with multiple DC pulverized coal burners, and each burner has a fixed jet angle. The size of the jet angle is closely related to the degree of fullness of the flame in the furnace and the mixing process of pulverized coal and air in the hot state of the boiler. Studies have shown that adjusting the tangential circle of primary and secondary air and delaying the mixing of primary and secondary air can adjust the coal powder gradient field in the furnace and reduce the formation of NOx in the furnace. However, the burners of existing boilers cannot swing left and right. That ...

Claims

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Application Information

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IPC IPC(8): F23C5/06F23D1/00
Inventor 凌柏林赵虹翁善勇杨建国冯国华周永刚郑航
Owner ZHEJIANG UNIV
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