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Scrap iron separation and collection system and method applied to intermediate storage type pulverizing system

A pulverizing system and collection system technology, applied in the direction of magnetic separation, solid separation, chemical instruments and methods, etc., can solve the problems of lowering the ash melting point, increasing the risk of coking of the water wall of the boiler, and increasing the wear and tear of the primary air pipe, etc.

Inactive Publication Date: 2020-04-10
STATE GRID HEBEI ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing mid-storage pulverizing system only has a sawdust separator, which cannot separate the iron filings in the coal powder
The data shows that the wear is mainly caused by particles with high hardness. For the primary air duct, the hardness of pulverized coal is lower than that of the pipe material, and the hardness of iron filings is basically close to that of the pipe. Abrasion of air ducts; iron filings in pulverized coal are easily oxidized into ferrous oxide in the furnace, which lowers the melting point of ash and increases the risk of coking on the water wall of the boiler

Method used

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  • Scrap iron separation and collection system and method applied to intermediate storage type pulverizing system
  • Scrap iron separation and collection system and method applied to intermediate storage type pulverizing system
  • Scrap iron separation and collection system and method applied to intermediate storage type pulverizing system

Examples

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Effect test

Embodiment 1

[0032] An iron filings separation and collection system applied to a mid-storage pulverizing system, comprising an iron filings separator 1, a control cabinet 2 for controlling the iron filings separator 1, and an iron filings collector 3 for collecting iron filings, the control The cabinet 2 is electrically connected with the chip separator 3 .

[0033] Further, the iron filings separator 1 includes an iron filings separator main body 11, the upper and lower ends of the iron filings separator main body 11 are respectively provided with an upper connecting pipe 14 and a lower connecting pipe 15, and the iron filings separator main body 11 The lower end is connected to the iron filings collection pipe 16, and the iron filings collection pipe 16 is connected to the iron filings collector 3. The two sides of the outer wall of the iron filings separator 1 are respectively provided with electromagnets 13, and the inner wall of the iron filings separator main body 11 is for adsorptio...

Embodiment 2

[0045] An iron filings separation and collection system applied to a mid-storage pulverizing system, comprising an iron filings separator 1, a control cabinet 2 for controlling the iron filings separator 1, and an iron filings collector 3 for collecting iron filings, the control The cabinet 2 is electrically connected with the chip separator 3 .

[0046] Further, the iron filings separator 1 includes an iron filings separator main body 11, the upper and lower ends of the iron filings separator main body 11 are respectively provided with an upper connecting pipe 14 and a lower connecting pipe 15, and the iron filings separator main body 11 The lower end is connected to the iron filings collection pipe 16, and the iron filings collection pipe 16 is connected to the iron filings collector 3. The two sides of the outer wall of the iron filings separator 1 are respectively provided with electromagnets 13, and the inner wall of the iron filings separator main body 11 is for adsorptio...

Embodiment 3

[0058] An iron filings separation and collection system applied to a mid-storage pulverizing system, comprising an iron filings separator 1, a control cabinet 2 for controlling the iron filings separator 1, and an iron filings collector 3 for collecting iron filings, the control The cabinet 2 is electrically connected with the chip separator 3 .

[0059] Further, the iron filings separator 1 includes an iron filings separator main body 11, the upper and lower ends of the iron filings separator main body 11 are respectively provided with an upper connecting pipe 14 and a lower connecting pipe 15, and the iron filings separator main body 11 The lower end is connected to the iron filings collection pipe 16, and the iron filings collection pipe 16 is connected to the iron filings collector 3. The two sides of the outer wall of the iron filings separator 1 are respectively provided with electromagnets 13, and the inner wall of the iron filings separator main body 11 is for adsorptio...

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Abstract

A scrap iron separation and collection system applied to an intermediate storage type pulverizing system comprises a scrap iron separator, a control cabinet used for controlling the scrap iron separator and a scrap iron collector used for collecting scrap iron, and the control cabinet is electrically connected with the scrap iron separator. The invention further relates to a scrap iron separationand collection method applied to an intermediate storage type pulverizing system. A control cabinet is used for controlling the working time of an electromagnet, the working time is 3-5 minutes, scrapiron in the pulverized coal is magnetized and adsorbed, and the scrap iron in the pulverized coal is adsorbed to the adsorption wall outside the electromagnetic coil. By means of the principle that the electromagnet loses power and magnetism, scrap iron on the adsorption wall is released through outage, automatically slides to a scrap iron collecting pipe under the action of gravity and is collected into the scrap iron collector through a scrap iron collecting descending pipe. According to the invention, the abrasion of a primary air pipe can be greatly reduced, and the coking risk of the water wall of a boiler can be reduced.

Description

technical field [0001] The invention relates to the technical field of boiler equipment, more specifically, to the recovery of iron filings in pulverized coal of a pulverizing system and the anti-wear technology of pipelines, and in particular to a system and method for separating and collecting iron filings applied to a mid-storage pulverizing system. Background technique [0002] The existing mid-storage pulverizing system only has a sawdust separator, which cannot separate the iron filings in the coal powder. The data shows that the wear is mainly caused by particles with high hardness. For the primary air duct, the hardness of pulverized coal is lower than that of the pipe material, and the hardness of iron filings is basically close to that of the pipe. Abrasion of air ducts; iron filings in pulverized coal are easily oxidized into ferrous oxide in the furnace, which lowers the melting point of ash and increases the risk of coking on the water wall of the boiler. Cont...

Claims

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Application Information

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IPC IPC(8): B03C1/02
CPCB03C1/02
Inventor 刘文献刘斌杰马登卿张万德刘亚军贾永会张勇胜
Owner STATE GRID HEBEI ELECTRIC POWER RES INST
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