Auto-medium gas-solid two-phase fluidized bed dry coal separator based on bed layer partition plates

A technology of fluidized bed and coal preparation machine, which is applied in the direction of chemical instruments and methods, solid separation, wind shaker, etc. It can solve the problems of unstable separation accuracy of dry coal preparation and difficulty in realizing industrial application, and achieve low cost The effect of low cost, novel equipment and long service life of equipment

Pending Publication Date: 2017-10-10
LIUPANSHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This difference in density often leads to unstable separation accuracy ...

Method used

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  • Auto-medium gas-solid two-phase fluidized bed dry coal separator based on bed layer partition plates
  • Auto-medium gas-solid two-phase fluidized bed dry coal separator based on bed layer partition plates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In this example, the length of the self-medium gas-solid fluidized bed is 9000mm, the diameter is 2500mm, the air blower is 2.2KW, and the wind pressure is 1.8MPa. There are 3 sets, the induced draft fan is 1.5KW, and the wind pressure is 1.5MPa. The angle is 65°. Send the raw coal crushed to less than 50mm into the feeding hopper by the belt conveyor, and then turn on the blower and the induced draft fan respectively to make the air flow field in the fluidized bed uniform and stable. Then turn on the operation switches of the feeder, cloth roller, vibrating feeder and feeder in turn. As shown in the schematic diagram, the two feeders work alternately to continuously feed the raw coal from the upper hopper to the middle hopper. Driven by the rotation of the distributing roller, the raw coal in the middle hopper is evenly spread to the vibrating feeder of the lower hopper. Driven by the vibrating feeder, the raw coal enters the fluidized bed at a certain flow rate.

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Embodiment 2

[0049] In this example, the self-medium gas-solid fluidized bed has a length of 12000mm, a diameter of 2500mm, four blowers of 2.2KW and a wind pressure of 1.8MPa, four induced draft fans of 1.5KW and a wind pressure of 1.5MPa, and the horizontal angle of the fluidized bed is 70°. Send the raw coal crushed to less than 50mm into the feeding hopper by the belt conveyor, and then turn on the blower and the induced draft fan respectively to make the air flow field in the fluidized bed uniform and stable. Then turn on the operation switches of the feeder, cloth roller, vibrating feeder and feeder in turn. As shown in the schematic diagram, the two feeders work alternately to continuously feed the raw coal from the upper hopper to the middle hopper. Driven by the rotation of the distributing roller, the raw coal in the middle hopper is evenly spread to the vibrating feeder of the lower hopper. Driven by the vibrating feeder, the raw coal enters the fluidized bed at a certain flow ...

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PUM

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Abstract

The invention discloses an auto-medium gas-solid two-phase fluidized bed dry coal separator based on bed layer partition plates. The auto-medium gas-solid two-phase fluidized bed dry coal separator comprises a feed system, a gas-solid fluidized bed and a sorting product collection system. The feed system is connected with the gas-solid fluidized bed to achieve feeding on the gas-solid fluidized bed. The sorting product collection system is connected with the gas-solid fluidized bed to achieve sorting collection. The gas-solid fluidized bed comprises an air distribution plate. Air blowers are arranged below the air distribution plate, a dust isolation plate is arranged above the air distribution plate, and exhaust fans are arranged above the dust isolation plate. The air distribution plate is arranged obliquely, the upper portion of the air distribution plate is used for receiving fed materials, the multiple parallel bed layer partition plates are arranged between the lower portion of the air distribution plate and the dust isolation plate, and the bed layer partition plates extend downwards to the sorting product collection system. According to the auto-medium gas-solid two-phase fluidized bed dry coal separator, the density variation between coal and impurity gangue is utilized, the coal, the impurity gangue and the like are fluidized in the fluidized bed so as to be stably layered, and finally the coal, the impurity gangue and the like are separated. The auto-medium gas-solid two-phase fluidized bed dry coal separator has the beneficial effects that sorting efficiency and sorting precision are high; the same coal sorting density level range adaptability is large; the equipment investment and construction cost is low; operation and maintenance are convenient; energy consumption is low; dependence on water sources is avoided; and high efficiency and energy saving are achieved.

Description

technical field [0001] The invention belongs to the technical field of coal washing and separation, and relates to a new type of dry coal separation method for self-medium gas-solid two-phase fluidized bed dry method for coal, in particular to a self-medium gas-solid two-phase fluidized bed dry method based on bed separation. coal machine. Background technique [0002] my country is rich in coal resources. With the needs of economic development, the amount of coal mining has ranked first in the world for many years. At present, coal washing mainly adopts traditional coal preparation methods such as gravity separation, flotation, and magnetic separation. Generally speaking, traditional coal preparation methods have the advantages of stable output, high separation precision and mature technology. But at the same time, it also has the disadvantages of high energy consumption, low sorting efficiency, and large environmental pollution, which are difficult to overcome, especially...

Claims

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Application Information

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IPC IPC(8): B03B4/06
CPCB03B4/065
Inventor 籍永华秦丙克
Owner LIUPANSHUI NORMAL UNIV
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