Low NOx liquid state slag-off double-eddy flow coal-powder combustor

A technology of pulverized coal burner and liquid slag discharge, which is applied to burners, burners for burning powder fuel, combustion methods, etc., can solve the problems of insufficient pulverized coal combustion, affecting the service life of the burners, etc., and reduce smoke and dust emissions. Quantity, extended service life, and the effect of sufficient combustion

Active Publication Date: 2008-12-17
SHANGHAI TIQIAO TEXTILE & YARN DYEING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Due to the primary air combustion method, the combustion of pulverized coal is not sufficient;

Method used

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  • Low NOx liquid state slag-off double-eddy flow coal-powder combustor
  • Low NOx liquid state slag-off double-eddy flow coal-powder combustor
  • Low NOx liquid state slag-off double-eddy flow coal-powder combustor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] Take the 10-ton chain grate steam boiler burner as an example, such as figure 1 , 2 Figure 3 shows the structure diagram of a water-cooled low-NOx liquid slag discharge dual-swirl pulverized coal burner. The water-cooled low-NOx liquid slag discharge dual-swirl pulverized coal burner is composed of adjustable fuel injection The composition of the device 5 and the combustion chamber 30:

[0030] The adjustable fuel injection device 5 is composed of a rear end cover 2, a cone 6, an adjusting screw jacket 7, a nozzle adjusting screw 8, a diffuser 9, a primary air axial flow generator 10, a cone adjusting control plate 11, and a fuel pipe. 12. Ignition device 13, igniter 14, fire-watching door 15, fire-watching door locking control panel 16, rear cover hinge 23 and rear cover locking control panel 24, primary air / coal injection pipe 25 and flame detection The sensor 28 is constituted.

[0031] The combustion chamber 30 is a cylindrical combustion chamber, co...

Example Embodiment

[0036] Example 2

[0037] Take the 10-ton chain grate steam boiler burner as an example, such as Figure 5 , 6 Shown is a schematic structural diagram of an air-cooled low-NOx liquid slag discharge dual-swirl pulverized coal burner. The air-cooled low-NOx liquid slag discharge dual-swirl pulverized coal burner is composed of adjustable injection combustion The composition of the device 5 and the combustion chamber 30: the adjustable fuel injection device 5 is the same as the embodiment 1. The only difference in the combustion chamber 30 is that there are secondary air heat exchange fins between the combustion chamber shell 20 and the secondary air chamber 19 33. The other parts are the same as in Example 1.

[0038] The second example of the present invention: the boiler was modified, and an air-cooled low-NOx liquid slagging double swirling pulverized coal burner was installed, and the modified boiler was the SZL10-1.25-AII chain grate boiler produced by Jiangsu Nantong Boiler Fa...

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Abstract

The invention relates to a low-NOx slag tapping double-swirl pulverized coal burner, which is suitable for 2-35 ton steam and hot water boiler and burning devices desired for heat energy for various kinds of industrial productions such as furnace, forging, steel making, road and bridge mixing station, and cold aggregate heating. The low-NOx slag tapping double-swirl pulverized coal burner comprises an adjustable burning device and a cylindrical burning chamber and is characterized in that the housing of the burning chamber is a heat insulating layer; a cooling water channel or a secondary air heat exchange fin is arranged between the housing the burning chamber and a secondary air chamber; a cooling water outlet pipe and a cooling water inlet pipe are respectively arranged on the upper and the lower ends of the cooling water channel; and a primary gas axial flow generator is arranged on the top of the jacket of an adjusting screw. The low-NOx slag tapping double-swirl pulverized coal burner has the advantages of sufficient burning and improved service life.

Description

technical field [0001] The invention relates to a low NOx liquid slagging double-swirl pulverized coal burner, which is suitable for various industries such as 2-35 tons of steam and hot water boilers, furnaces, forging, steelmaking, road and bridge mixing stations, and cold aggregate heating. The invention relates to a combustion device for producing heat energy requirements, belonging to the technical field of pulverized coal burners. Background technique [0002] The layer-fired boiler is a furnace type widely used in industrial boilers at present. It is composed of pressure parts, chain grate and other main components. Low burn rate, q 4 Large loss, exhaust smoke contains NOx, SO 2 , High dust concentration, polluting the environment. In order to solve these problems, the applicant applied for a utility model patent entitled "Low NOx Axial Vortex Pulverized Coal Burner" on February 12, 2007, the publication number is CN201014436, and the name applied on June 11, 2007 ...

Claims

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Application Information

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IPC IPC(8): F23D1/02
Inventor 郑雯平
Owner SHANGHAI TIQIAO TEXTILE & YARN DYEING
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