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A device for uniformly adding powdery materials, an installation method and a use method

A technology of adding devices and powdery materials, which is applied in the direction of furnaces, furnace types, blast furnace parts, etc., to achieve the effect of solving secondary pollution, simple structure and reliable operation

Active Publication Date: 2019-02-05
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above existing problems, the present invention discloses a device for uniformly adding powdery materials, which can solve the problem of uniformly adding powdery materials generated in the production process of coking CDQ to the coal injection pulverizing system, and makes up for the existing technical flaws

Method used

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  • A device for uniformly adding powdery materials, an installation method and a use method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] see figure 1 , a device for evenly adding powdery materials, the adding device includes a powder bin 2, a bin top dust collector 1, a coal mill 12, a raw coal bin 15, a bag filter 17, a coal dust bin, 21 main exhaust fans, the bin The top dust collector is arranged on the top of the powder bin, and the powder bin 2 and the coal mill 12 are connected through a pipeline, and the pipeline is provided with a shut-off valve 3, an adjustable star-shaped ash discharge valve 4, and a fluidizer 5; The pipeline between the raw coal bunker 15 and the coal mill 12 is provided with a coal feeder 13 and a shut-off valve 14. The coal mill 12 is connected to the bag filter 17 through the coal mill outlet pipeline 16. The dust collector 17 is arranged above the pulverized coal bin 21, and the bag dust collector is connected to the main exhaust fan 19 through the outlet pipe of the dust collector, and the other end of the main exhaust fan is connected to the chimney 20. In this plan, th...

Embodiment 2

[0017] see figure 1 , as an improvement of the present invention, the adding device also includes a secondary gas supply device, and the secondary gas supply device includes a gas supply pipeline, a secondary gas supply device 8, a second gas regulating valve 9, a gas flow meter 10. The secondary gas supply device 8, the second gas regulating valve 9, and the gas flow meter 10 are all arranged on the gas supply pipeline. Install a secondary air supply device on the air supply pipeline, and under the boost of the gas ejected from the secondary air supply device and the main exhaust fan of the pulverizing system, CDQ powder can be continuously fed into the middle of the coal mill to avoid blockage of the conveying pipeline , and the mixed coal powder produced by the coal mill is evenly mixed, and is collected by the bag filter into the coal powder bin. This control technology can make up for the defects of the existing technology. The rest of the structures and advantages are e...

Embodiment 3

[0019] see figure 1 , as an improvement of the present invention, the adding device further includes a hot flue gas system, which is connected to the coal pulverizer through a pipeline, and is used for drying the coal powder in the coal pulverizer. The rest of the structures and advantages are exactly the same as in Embodiment 1.

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Abstract

The invention relates to a uniform powdery material adding device. The uniform powdery material adding device is characterized in that the adding device comprises a powder bin, a bin roof dust remover, a coal mill, a raw coal bin, a bag dust collector, a pulverized coal bin and a main exhaust fan; the bin roof dust remover is arranged above the powder bin, the powder bin and the coal mill are connected through a pipeline, and the pipeline is provided with a cut-off valve, an adjustable star type cinder valve and a fluidization device; the part, between the raw coal bin and the coal mill, of the pipeline is provided with a coal feeder and a cut-off valve, and the coal mill is connected with the bag dust collector through a coal mill outlet pipeline; and the bag dust collector is arranged above the pulverized coal bin and connected with the main exhaust fan through a dust collector outlet pipeline, and the other end of the main exhaust fan is connected with a chimney.

Description

technical field [0001] The invention relates to an adding device, in particular to a powder material uniform adding device, an installation method and a use method, and belongs to the technical field of blast furnace ironmaking. Background technique [0002] Coking raw coal produces high-temperature hot coke through the coking process. During the cooling process of high-temperature hot coke (currently most enterprises use nitrogen cooling, commonly known as "dry quenching"), some powdery substances (commonly known as "CDQ powder") will be produced. ”); CDQ powder has the characteristics of high carbon content, low volatile matter, low grindability coefficient, low ignition point, and extremely fine particle size (close to the fineness of qualified coal powder), which is equivalent to in anthracite. The pulverizing system of blast furnace coal injection is to mix bituminous coal and anthracite evenly according to a certain proportion and send them into the raw coal bunker. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B7/00
Inventor 彭福荣杨文光
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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