Blast furnace oxygen enrichment coal powder injection device and method off-line assembly and disassembly thereof

A technology of blast furnace coal injection and blast furnace, applied in blast furnace, blast furnace details, blast furnace parts, etc., can solve problems such as damage, achieve the effects of avoiding heat flow impact, speeding up oxidation speed, and solving temperature rise problems

Inactive Publication Date: 2013-06-05
无锡市释珑能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inevitable existence of collisions, if non-metallic ceramic materials are used to manufacture oxygen coal guns or oxygen-enriched coal injection devices, it is bound to cause immediate damage due to collisions during the online gun insertion process

Method used

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  • Blast furnace oxygen enrichment coal powder injection device and method off-line assembly and disassembly thereof
  • Blast furnace oxygen enrichment coal powder injection device and method off-line assembly and disassembly thereof
  • Blast furnace oxygen enrichment coal powder injection device and method off-line assembly and disassembly thereof

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Experimental program
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Embodiment Construction

[0039] Such as figure 1 As shown, the blast furnace oxygen-enriched coal injection device is at least composed of an oxygen-enriched burner 1, a sealing device 2, a tuyere 3, an air supply branch pipe 4, a spray gun 5, a casing 6, a positioning member 7, and a protective tube 8, specifically including:

[0040] ——The oxygen-enriched burner 1 is installed at the outlet end of the spray gun 5 and the sleeve pipe 6 .

[0041] - The sealing device 2 locks and seals the spray gun 5 and the casing 6 at the same time, such as image 3 shown. Or the casing 6 is locked and sealed separately, such as Figure 5 shown.

[0042] - Oxygen enters from the oxygen interface 13, such as image 3 , 5 As shown, and through the gap between the spray gun 5 and the casing 6, it reaches the annular cavity 22 of the seat 9 of the oxygen-enriched burner 1, as figure 2 shown. Coal powder enters from the connector 21 entrance of spray gun 5 tail ends, as image 3 , 5 As shown, enter the coal ch...

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Abstract

The invention discloses a blast furnace oxygen enrichment coal powder injection device. The blast furnace oxygen enrichment coal powder injection device adopts nonmetal ceramic to manufacture an oxygen enrichment burner, and the oxygen enrichment burner is arranged at an outlet of a spray gun and an outlet of a sleeve. Simultaneously, the sleeved is protected. The blast furnace oxygen enrichment coal powder injection device has the application performance which is heat-resisting, wear-resisting and oxidation-resisting, and the service life can be prolonged remarkably. A method of off-line assembly and disassembly of the blast furnace oxygen enrichment coal powder injection device is that in the state of blast furnace damping down, through a mode of dismantling a flange, the blast furnace oxygen enrichment coal powder injection device can be inserted in or pulled out from a gun insertion hole passage of a blowing-in branch pipe. By the adoption of the blast furnace oxygen enrichment coal powder injection device and the method of the off-line assembly and disassembly of the blast furnace oxygen enrichment coal powder injection device, the mixture between pulverized coal, oxygen and hot-blast air can be furthest improved, so that a partial oxygen enrichment condition which benefit to pulverized coal firing is produced, and combustion efficiency and coal quantity of blast furnace coal injection can be improved by a large margin.

Description

technical field [0001] The invention belongs to the technical field of blast furnace ironmaking, and relates to blast furnace coal injection technology, in particular to a blast furnace oxygen-enriched coal injection device and an off-line loading and unloading method thereof. Background technique [0002] Blast furnace coal injection adopts oxygen-enrichment measures, which is the main means to increase the combustion rate of pulverized coal and increase the amount of coal injection. In the prior art, the main methods of oxygen enrichment in the blast furnace are: oxygen enrichment before the machine and oxygen enrichment after the machine. They all add oxygen into the cold air in different ways. After passing through the hot air stove, the oxygen has been completely mixed in the hot air. Therefore, this oxygen-enrichment method cannot provide local oxygen-enrichment conditions that are more conducive to pulverized coal combustion. The method for providing local oxygen-en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B7/00C21B7/16
Inventor 张昭贵
Owner 无锡市释珑能源科技有限公司
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