Blast furnace gas burning assisting device

A technology of blast furnace gas and pores, which is applied in the field of blast furnace gas accompanying combustion devices and combustion devices, can solve the problems of combustion stability and other problems, and achieve the effects of improving combustion-supporting conditions, increasing contact area, and increasing contact time

Active Publication Date: 2014-08-27
南通海鹰机电集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The burner belongs to the self-introduced air diffusion premixed burner, which is suitable for high calorific value gas, and it is no problem for the ignition of converter gas and blast furnace gas. The problem of improving heat utilization, so the stability of combustion will be problematic

Method used

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  • Blast furnace gas burning assisting device

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Experimental program
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Effect test

Embodiment 1

[0020] The blast furnace gas accompanying firing device of this embodiment is shown in Fig. 1 , a cylindrical main body A with a horizontal axis has an inlet port IN and an outlet port OUT. The inlet IN is composed of a central air inlet passage 1 and an air inlet ring 2 surrounding the air inlet passage. The air inlet passage 1 communicates with the atmosphere through the axial tubular secondary air outlet 3 near the center of the end, and the air inlet ring 2 connects with the blast furnace gas through the radial gas inlet 4 .

[0021] The outlet port OUT is composed of a tapered flame stabilization cone 5 and a tubular flame injection port 6 at its outer end. The flame stabilization cone 5 has a group of pressure relief nozzles 7 evenly distributed around the circumference, and each pressure relief nozzle 7 is formed by a mouth slit extending in the circumferential direction. 7-1 and the guide pipe 7-2 that is gradually narrowed in the flame-stabilizing cone 5 by the mouth ...

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Abstract

The invention relates to a blast furnace gas burning assisting device, and belongs to the technical field of gas emission treatment facilities. The inlet end of a cylindrical body of the device is composed of an air inlet channel in the center and an annular air inlet channel surrounding the air inlet channel. The outlet end of the device is composed of a flame stabilizing cone decreasing gradually and a flame spraying opening. A gradually-expanding cone section with a thermal insulation layer is arranged between the inlet end and the outlet end and the cone section is composed of an inner conical cylinder and an outer conical ring surrounding the outer side of the inner conical cylinder. The cone section is provided with a primary air pipe penetrating through the outer conical ring to be inserted into the inner conical cylinder, the outer end of the primary air pipe is communicated with the air and the inner end of the primary air pipe extends to form a nozzle with a necking section. A flow evening cavity extends towards the outer conical ring to form a backflow pipe, and the end of the backflow pipe is provided with an injection nozzle inserted into the primary air pipe and facing the center of the necking section. The blast furnace gas burning assisting device enables blast furnace gas entering the inner conical cylinder to be ignited reliably and burned stably.

Description

technical field [0001] The invention relates to a combustion device, in particular to a blast furnace gas accompanying combustion device, and belongs to the technical field of gas emission treatment facilities. Background technique [0002] Blast furnace gas released from industries such as metallurgy has a low calorific value and is difficult to ignite; even if ignited, the combustion is quite unstable. Therefore, certain measures need to be taken to burn blast furnace gas to ensure reliable ignition and stable combustion. [0003] The search found that the Chinese patent application number 200920035801.6 discloses a high-altitude ignition companion burner for blast furnace gas combustion, including an ignition cylinder, the ignition cylinder communicates with the outside world up and down, and an elevator-type arc generator is arranged in the ignition cylinder. A high-voltage conductive rod device is installed on the side, the blast furnace gas inlet pipe extends into the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/06F23D14/66
CPCY02E20/34
Inventor 杨裕能
Owner 南通海鹰机电集团有限公司
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