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Vertical two-section type blast furnace pulverized coal injection device

A two-stage, pulverized coal technology, applied in blast furnaces, blast furnace details, blast furnace parts, etc., to solve the problems of gas flow distribution and column permeability, improve gas utilization, and improve coal ratio

Active Publication Date: 2018-07-10
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the existing technical problems, the present invention provides a vertical two-stage blast furnace pulverized coal injection device, which can improve the gas flow distribution in the furnace and improve the gas utilization rate (η CO ) to solve the problems of gas flow distribution and gas permeability of the material column, so as to realize rapid, effective and uniform injection, and achieve the effect of increasing coal ratio, reducing fuel ratio and cost

Method used

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  • Vertical two-section type blast furnace pulverized coal injection device
  • Vertical two-section type blast furnace pulverized coal injection device
  • Vertical two-section type blast furnace pulverized coal injection device

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Embodiment Construction

[0044] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0045] like Figure 1-2 Shown: This embodiment discloses a vertical two-stage blast furnace pulverized coal injection device, including a blast furnace 1 and a plurality of two-stage pulverized coal spray guns 2 arranged inside the blast furnace 1 .

[0046] The blast furnace 1 described here refers to the ironmaking blast furnace. The improvement in this embodiment is mainly to provide a complete set for the ironmaking blast furnace in the prior art to increase the amount of pulverized coal injection and improve the gas flow distribution in the furnace. A device to improve the production efficiency of ironmaking.

[0047] The device described here is a two-stage pulverized coal spray gun 2 .

[0048] In detail, the plurality of two-stage pulverized coal spra...

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Abstract

The invention belongs to the technical field of blast furnace ironmaking, and particularly relates to a vertical two-section type blast furnace pulverized coal injection device. The pulverized coal injection device comprises a blast furnace and multiple two-section pulverized coal spray guns arranged inside the blast furnace; and the multiple two-section type pulverized coal spray guns are distributed on the top part of the blast furnace in an array mode and inserted into the blast furnace from top to bottom; and each two-section type pulverized coal spray gun is of an internally-hollow structure with two ends communicating with each other, and the spray guns are used for spraying pulverized coal into the blast furnace from the outside along internal hollow channels of the spray guns through carrier gas. According to the vertical two-section type blast furnace pulverized coal injection device, coal gas flow distribution in the furnace can be improved, so that the coal gas utilization rate (Eta CO) is improved to solve the problems of coal gas flow distribution, stock column air permeability and the like, and therefore rapid and effective uniform injection can be realized, and the application effects of improving the coal ratio and reducing the fuel ratio and cost are achieved.

Description

technical field [0001] The invention belongs to the technical field of blast furnace ironmaking, and in particular relates to a vertical two-stage blast furnace pulverized coal injection device. Background technique [0002] Pulverized coal injection technology is one of the effective measures to reduce costs and increase efficiency in blast furnace ironmaking. Blast furnace coal injection can not only greatly reduce the coke ratio, but also adds a means of adjustment to blast furnace operation. Blast furnace operators can control the thermal state of the blast furnace by controlling coal injection. Therefore, the blast furnace pulverized coal injection process can greatly reduce the cost of pig iron, reduce the use of coke ratio, and improve the environment. In addition, the current distribution of blast furnace gas flow is not conducive to the utilization of blast furnace gas. Properly increasing the gas volume in the radial direction R / 3 (R is the radius of the furnace a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00C21B7/00
Inventor 沈峰满姜鑫吴刚生郑海燕沈岩松高强健白文广张枥温秋林
Owner NORTHEASTERN UNIV
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