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A two-stage blast furnace pulverized coal injection device

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

Active Publication Date: 2019-11-05
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Aiming at the existing technical problems, the present invention provides a 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

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  • A two-stage blast furnace pulverized coal injection device
  • A two-stage blast furnace pulverized coal injection device
  • A two-stage blast furnace pulverized coal injection device

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Embodiment Construction

[0048] 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.

[0049] Such as Figure 1-2 As shown: this embodiment discloses a two-stage blast furnace pulverized coal injection device, including a blast furnace 1 , a plurality of two-stage pulverized coal spray guns 2 and a beam frame 3 arranged inside the blast furnace 1 .

[0050] 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 method to increase the production efficiency of ironmaking.

[0051] The device described here includes a beam frame 3 and a two-stage pulverized coal spray gun 2 .

[0052] In detail, the plu...

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Abstract

The invention belongs to the technical field of blast furnace ironmaking, and in particular relates to a two-stage blast furnace pulverized coal injection device, which includes a blast furnace and a plurality of two-stage pulverized coal lances arranged inside the blast furnace; the plurality of two-stage pulverized coal injection guns The pulverized coal spray guns are inserted into the interior of the blast furnace in an array distributed horizontally from the outside to the side wall of the furnace body of the blast furnace; the plurality of two-stage pulverized coal spray guns are all set to have an internal hollow structure with both ends connected for use. The pulverized coal is blown from the outside along its internal hollow channel into the interior of the blast furnace through a carrier gas; beams for protecting the two-stage pulverized coal lances are provided on the upper part of the plurality of two-stage pulverized coal lances. shelf. The two-stage blast furnace injection method for pulverized coal provided by the present invention can improve the gas utilization rate (η CO ) to solve problems such as gas flow distribution and material column permeability, so as to achieve rapid, effective and uniform injection, and achieve the application effects of increasing the coal ratio, reducing the fuel ratio and cost.

Description

technical field [0001] The invention belongs to the technical field of blast furnace ironmaking, and in particular relates to a 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 at this he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/00C21B7/00
CPCC21B5/003C21B7/00
Inventor 郑海燕沈峰满沈岩松吴刚生姜鑫高强健白文广闫风赵洋李亮相冬文
Owner NORTHEASTERN UNIV LIAONING
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