Dedusting delivery system and method for bulk materials

A technology for bulk materials and conveying systems, applied in the direction of conveyors, conveyor objects, mechanical conveyors, etc., can solve the problems of secondary dust, poor effect, low processing air volume, etc., and achieve the effect of reducing dust and preventing spontaneous combustion

Inactive Publication Date: 2014-04-30
INNER MONGOLIA DATANG INT XILINHOT LIGNITE INTEGRATION DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. It is not suitable for medium with high inlet concentration, and usually requires the inlet concentration not to be higher than 10mg / m 3 , the handling air volume is not higher than 100000m 3 / h
[0004] 2. Not suitable for dust-prone industries such as large-scale lignite drying
[0005] 3. Most of the existing dust removal systems discharge the collected pulverized coal to the coal conveying device again. During the discharge process, the dust will be raised again, and when passing through the next transfer station, the pulverized coal will be raised again. start, need to repeat collection
[0006] 4. Most of the dust collectors in the existing coal conveying system use mechanical rapping to remove dust, which has a poor effect. Coal dust will be adsorbed on the filter bag for a long time, and there are safety hazards such as spontaneous combustion and deflagration
Therefore, it is difficult to completely solve the dust problem by using the traditional existing dust collector system in the coal transportation system

Method used

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  • Dedusting delivery system and method for bulk materials

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0068] 1. The dried lignite is sent to the 1# transfer station through the closed first conveyor 1, and falls on the closed second conveyor 9 through the blanking pipe 2.

[0069] 2. The pulverized coal raised at the outlet of the discharge pipe 2 enters the pulse bag filter from the dust collection hood 3 along with the negative pressure gas generated by the induced draft fan 5 .

[0070] 3. The collected coal powder falls into the hopper at the bottom of the bag filter, and the purified gas is discharged from the induced draft fan 5.

[0071] 4. The pulverized coal falling into the hopper at the bottom of the bag filter enters the upper buffer bin 10 of the molding machine 7 through the discharger 6, and the molding machine 7 presses the pulverized coal into a briquette 8 with a certain shape and strength.

[0072] 5. The compressed coal 8 directly falls on the second conveyor 9 and is sent to the next transfer station or coal yard.

example 2

[0074] 1. The dried lignite is sent to the 1# transfer station through the closed first conveyor 1, and falls on the closed second conveyor 9 through the blanking pipe 2.

[0075] 2. The pulverized coal raised at the outlet of the discharge pipe 2 enters the pulse bag filter from the dust collection hood 3 along with the negative pressure gas generated by the induced draft fan 5 .

[0076] 3. The collected coal powder falls into the hopper at the bottom of the bag filter, and the purified gas is discharged from the induced draft fan 5.

[0077] 4. The pulverized coal falling into the hopper at the bottom of the bag filter enters the upper buffer bin 10 of the molding machine 7 through the discharger 6, and the molding machine 7 presses the pulverized coal into a briquette 8 with a certain shape and strength.

[0078] 5. The briquettes 8 pressed at the 1# transfer station, the briquettes 8 pressed at the 2# transfer station and other transfer stations are sent to the coal yard ...

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Abstract

The invention provides a dedusting delivery system and method for bulk materials. The dedusting delivery system comprises at least one material conveying unit, wherein all the material conveying units are arranged in sequence along a material conveying path. Each material conveying unit comprises a first conveyor, a second conveyor, a closed transfer station, a dust extraction mechanism and a forming machine, wherein the first conveyor is provided with a first feed end and a first discharge end; the second conveyor is communicated with the first conveyor and is provided with a second feed end used for receiving the materials from the first conveyor and a second discharge end used for discharging the materials out of the material conveying unit; the first discharge end of the first conveyor and the second feed end of the second conveyor extend into the transfer station, and the first discharge end transfers the materials to the second feed end of the second conveyor in the transfer station; the dust extraction mechanism is communicated with the inside of the transfer station so as to draw raised material dust out of the transfer station; the forming machine is communicated with the dust extraction mechanism so as to receive and form the dust extracted by the dust extraction mechanism into profile materials, and the forming machine is communicated with the second conveyor or an independent profile material conveying device outside the transfer station so as to further convey the profile materials.

Description

technical field [0001] The invention relates to the technical field of material conveying, in particular to a dust removal conveying system and a conveying method for bulk materials. Background technique [0002] Bulk materials, especially powdered materials, especially coal, are always accompanied by dust during the transportation process. Taking lignite as an example, my country is rich in lignite resources. In order to make rational use of lignite energy, low-rank coal needs to be dried. However, during the lignite drying process, a large amount of pulverized coal with a particle size of less than 1mm will be produced. These pulverized coals are light in weight and have good activity. During the transportation process, especially in the transfer station, it is easy to cause serious dust in the transportation system. A large amount of pulverized coal accumulates in coal transportation corridors and transfer stations, which reduces visibility, seriously endangers human heal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G45/10B65G45/26B65G47/52B65G37/00
Inventor 付志新梁燕均曹瑞忠高国双孙占秀张二伟张广平
Owner INNER MONGOLIA DATANG INT XILINHOT LIGNITE INTEGRATION DEV
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