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Pulverized coal igniter

A pulverized coal point and igniter technology, which is applied in the direction of combustion ignition, ignition by guiding the flame tongue, combustion method, etc., can solve the problems of time-consuming and laborious, increase the start-up cost, waste manpower, material resources and materials, etc., and achieve improved ignition conditions, The effect of speeding up and reducing labor intensity

Inactive Publication Date: 2012-10-03
SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Waste a lot of manpower, material resources and materials
The same problem exists in intermittently operated pulverized coal-fired hot blast stoves. Every time it is restarted, it is necessary to ignite the primer with firewood to ignite the pulverized coal, which is time-consuming and laborious, and increases the start-up cost.

Method used

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  • Pulverized coal igniter
  • Pulverized coal igniter
  • Pulverized coal igniter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The igniter of the present invention such as figure 1 As shown, it includes a combined tube body 5 and a pre-mixing chamber 2, the pre-mixing chamber is located at one end of the combined tube body, and the depth L of the combined tube body inserted into the shunt bin is 50 mm. The assembly is provided with a combustion-supporting air pipe 6 and a gas pipe 7. The combustion-supporting air pipe and the gas pipe are installed coaxially, and valves 8 are respectively provided. The combustion-supporting air pipe is connected with the public compressed air pipeline through the hose line, and the gas pipeline is connected with the pressure reducing valve of the liquefied petroleum gas tank. The premixing chamber is a cylindrical structure with open ends, such as figure 2 A deflector 1 is provided in the premixing chamber, and the deflector is a straight plate structure, and the deflector divides the premixing chamber into 4 deflectors. The outlet area 4 of the combined pipe b...

Embodiment 2

[0017] Another embodiment of the present invention is as image 3 As shown, the deflector is a spiral deflector 9, and other structures and methods of use are the same as those in Embodiment 1, and will not be repeated.

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PUM

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Abstract

The invention discloses a pulverized coal igniter, which comprises a combined pipe body and a premixing chamber. A combustion supporting air pipe and a gas pipe are coaxially arranged and respectively provided with a valve. The premixing chamber has a cylindrical structure of which two ends are open, and a guide plate in the premixing chamber divides the premixing chamber into 4 to 6 guide chambers. The guide plate has a straight plate structure or a spiral plate structure, the depth of inserting the combined pipe body into the premixing chamber is 30 to 50 millimeters, and a shunting body with a conical structure is arranged in an outlet area of the combined pipe body. Through the premixing chamber provided with the shunting body and the guide plate, gas sprayed by a burner, combustion supporting air and injected pulverized coal are partitioned into a plurality of streams for premixing, so that the ignition condition of the ignition burner is improved, flame is stabilized, and the pulverized coal is easy to ignite. By using the igniter, ignition and operation of a lime kiln can be optimized, the labor intensity is reduced, the time for igniting a solid fuel and the working time of the lime kiln are shortened, and the ignition cost is reduced.

Description

Technical field [0001] The invention belongs to the technical field of combustion equipment, and relates to an ignition burner, in particular to a pulverized coal igniter. Background technique [0002] Lime kiln is a large-scale calcining equipment for producing lime, mainly composed of beam lime kiln, sleeve lime kiln and parallel flow double-chamber lime kiln. The fuel used for calcination is mainly gas fuel and solid fuel such as coal powder and coke powder. Due to the high ignition point of solid fuel, when using solid fuel to calcinate limestone, it is necessary to use firewood to ignite the coke and then put in the coke-limestone mixture when the kiln is opened. The coke heats the stone, and the sprayed powdered coal is ignited by the high temperature stone. In the prior art, most of the beam-type lime kilns sprayed with coal powder use the above ignition method. When the temperature in the kiln is high, the kiln can be shut down for a short time to directly send pulveriz...

Claims

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Application Information

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IPC IPC(8): F23Q9/00
Inventor 贾会平杨贵民
Owner SHIJIAZHUANG XINHUA IND FURNACE CO LTD