Pure-oxygen pulverized coal entraining combustor

A technology of burners and pulverized coal, which is applied in the direction of burners, burners for burning powder fuels, and combustion methods, and can solve problems such as large fuel consumption, smoke emissions, and environmental damage

Inactive Publication Date: 2012-01-18
XUZHOU KERONG ENVIRONMENTAL RESOURCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It takes a lot of fuel to heat nitrogen, which accounts for 79% of the combustion air volume, from the ambient temperature to the furnace temperature, and this part of nitrogen will be discharged into the air with the flue gas, so the c

Method used

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  • Pure-oxygen pulverized coal entraining combustor
  • Pure-oxygen pulverized coal entraining combustor

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Embodiment Construction

[0008] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0009] Such as figure 1 As shown, the pulverized coal pure oxygen entrainment burner of the present invention is mainly composed of a powder feeding flue gas channel 1, a central oxygen lance 5, an annular oxygen chamber 4, an annular oxygen lance 7, and a burner brick 6. The middle part of the burner brick 6 is provided with a pulverized coal nozzle 8, and the powder feeding flue gas channel 1 leads into the pulverized coal nozzle 8, and there are 2 to 4 annular seam oxygen guns 7 around the powder feeding flue gas channel 1, 2 to 4 The outer end of a circular seam oxygen gun 7 is connected with a circular seam oxygen chamber 4, and the powder feeding flue gas channel 1 is provided with a central oxygen gun 5 entering from the central oxygen inlet 2, and the central oxygen gun 5 is provided with a circular seam oxygen chamber 4. Oxygen inlet 3 connected t...

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Abstract

The invention relates to a pure-oxygen pulverized coal entraining combustor, which comprises a pulverized coal nozzle arranged at the middle part of a combustor block, a pulverized coal feeding flue gas channel, a plurality of circular seam oxygen guns arranged at the circumference of the pulverized coal nozzle, a circular seam oxygen chamber connected to the outer ends of the plurality of circular seam oxygen guns, a central oxygen gun arranged in the pulverized coal flue gas channel and a circular seam oxygen inlet arranged on the central oxygen gun and communicated with the circular seal oxygen chamber. The length of flame of the combustor can be adjusted by adjusting flow adjusting valves on a central oxygen pipeline and a circular seam oxygen pipeline. Pulverized coal-containing flue gas is sprayed out from the pulverized coal flue gas channel, the central oxygen is sprayed out from the central oxygen gun positioned in the center of the pulverized coal flue gas channel, the pulverized coal flue gas and the central oxygen are premixed and burnt to form a stable root flame, therefore the fuel can be saved by 35 percent, the flue gas amount can be reduced by 70 percent, and nitric oxides contained in the flue gas are avoided.

Description

technical field [0001] The invention relates to a burner, in particular to a pulverized coal pure oxygen entrainment burner suitable for industrial furnaces. Background technique [0002] At present, the pulverized coal burner of industrial furnaces is mainly composed of a pulverized coal nozzle, a primary air channel leading into the pulverized coal nozzle, and a secondary air channel on the outer ring of the primary air channel. Air powder, primary air, and secondary air combustion, although they can play a combustion-supporting role, but in the actual combustion process, the real combustion-supporting agent only accounts for 21% of the volume of combustion-supporting air, oxygen, and the remaining 79% is mainly nitrogen. It takes a lot of fuel to heat nitrogen, which accounts for 79% of the combustion air volume, from the ambient temperature to the furnace temperature. This part of nitrogen will be discharged into the air with the flue gas, so the consumption of fuel and ...

Claims

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Application Information

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IPC IPC(8): F23D1/00
Inventor 刘彬陆羽
Owner XUZHOU KERONG ENVIRONMENTAL RESOURCES CO LTD
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