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Pyrolysis gas treatment device and treatment method in process of tar production by pulverized coal pyrolysis

A processing device and pyrolysis gas technology, applied in coke ovens, gas dust removal, petroleum industry, etc., can solve the problems of large filter structure, low linear velocity, damage to the flow state of the filter bed, etc., to prevent blockage , the effect of prolonging the dressing cycle and increasing the area

Active Publication Date: 2018-11-30
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, due to the large particle size of the seed coal and the large gaps in the bed, the fine powder filtration effect is not ideal, especially when there is a large amount of dust in the raw gas of pulverized coal pyrolysis, the dust removal effect will be unsatisfactory; On the one hand, using this filter, the linear velocity of the raw coal gas in the filter should not be too high. If it is too large, the semi-coke will be carried into the inner tube and destroy the flow state of the filter bed. Therefore, the filter structure will be relatively large.

Method used

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  • Pyrolysis gas treatment device and treatment method in process of tar production by pulverized coal pyrolysis

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Effect test

Embodiment 1

[0050] figure 1 Schematic diagram of the structure of the pyrolysis gas treatment device in the process of producing tar by pyrolysis of pulverized coal provided by the embodiment of the present invention; figure 2 The top view of the semi-coke filter of the pyrolysis gas treatment device in the pulverized coal pyrolysis tar production process provided by the embodiment of the present invention; image 3 Schematic diagram of the structure of the dispersing fan of the pyrolysis gas treatment device in the pulverized coal pyrolysis tar production process provided by the embodiment of the present invention; Figure 4 Schematic diagram of the structure of the internal pipe network or the external pipe network of the pyrolysis gas treatment device in the pulverized coal pyrolysis tar production process provided by the embodiment of the present invention; Figure 5 for Figure 4 The schematic diagram of the longitudinal section; Figure 6 Schematic diagram of the structure of th...

Embodiment 2

[0063] The pulverized coal with a particle size of 0-7mm is pyrolyzed at 600°C, and the pyrolysis gas treatment method during the pyrolysis process includes the following steps:

[0064] (1) The pyrolysis gas produced by pyrolysis of pulverized coal first enters the outer casing through the pyrolysis gas inlet of the semi-coke filter, and then enters between the outer pipe network and the inner pipe network through the outer pipe network. At the same time, The semi-coke is dropped from the semi-coke distribution feeding mechanism between the outer pipe network and the inner pipe network, and the pyrolysis gas and the semi-coke are in contact with each other. The temperature of the semi-coke is 450-800 ° C, and the temperature of the semi-coke filter is 500 ° C Left and right, the dust in the pyrolysis gas is preliminarily removed, and the removed powder coke is used as a semi-coke product along with the semi-coke, and the pyrolysis gas after the preliminary dust removal is disc...

Embodiment 3

[0069] The pulverized coal with a particle size of 0.3-3mm is pyrolyzed at 600°C, and the pyrolysis gas treatment method during the pyrolysis process includes the following steps:

[0070] (1) The pyrolysis gas produced by pyrolysis of pulverized coal first enters the outer casing through the pyrolysis gas inlet of the semi-coke filter, and then enters between the outer pipe network and the inner pipe network through the outer pipe network. At the same time, The semi-coke is dropped from the semi-coke distribution feeding mechanism between the outer pipe network and the inner pipe network, and the pyrolysis gas and the semi-coke are in contact with each other. The temperature of the semi-coke is 450-800 ° C, and the temperature of the semi-coke filter is 500 ° C Left and right, the dust in the pyrolysis gas is preliminarily removed, and the removed powder coke is used as a semi-coke product along with the semi-coke, and the pyrolysis gas after the preliminary dust removal is di...

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Abstract

The invention relates to a pyrolysis gas treatment device in the process of tar production by pulverized coal pyrolysis. The treatment device comprises a semi-coke filter, a cyclone separator and a spray tower module. The semi-coke filter comprises a cylindrical outer shell, an outer pipe network and an inner pipe network are annularly disposed in the outer shell, a semi-coke distribution feedingmechanism is fixedly disposed at the top of the outer shell, and the lower part of the outer shell side wall is equipped with a pyrolysis gas inlet. The semi-coke distribution feeding mechanism consists of a feedstock dispersing cylinder, a dispersing fan and a drive motor, a cover plate is fixedly disposed at the top of the dispersing cylinder, the drive motor is fixedly disposed at the top of the cover plate, the dispersing fan is located in the dispersing cylinder and is driven by the drive motor, the blades of the dispersing fan tilt down from the top, and the angle of inclination is 30degree-60degree. The spray tower module comprises a primary spray tower, a secondary spray tower and a condenser. The device is employed to treat pyrolysis gas. The treatment device and treatment methodprovided by the invention not only can achieve effective dust removal, but also can realize multi-stage separation and collection of tar.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical industry, and in particular relates to a pyrolysis gas treatment device and a treatment method in the process of pyrolysis of pulverized coal to produce tar. Background technique [0002] In my country, coal is the main energy source and chemical raw material, and it is also the main source of environmental pollution. Therefore, various related technologies have been developed around the multi-stage utilization of coal. At present, coal pyrolysis technology mainly includes rotary furnace pyrolysis process, moving bed pyrolysis process, fluidized bed pyrolysis process and entrained bed pyrolysis process according to the pyrolyzer process. Rotary furnace pyrolysis process and moving bed pyrolysis process mainly use lump coal as raw material, and the tar yield is low, which is not suitable for coal pyrolysis oil production technology; fluidized bed pyrolysis process and entrained bed pyr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/02C10K1/08C10G1/00C10B53/04
CPCC10B53/04C10G1/00C10K1/02C10K1/024C10K1/026C10K1/08
Inventor 欧阳少波赵春蝶杨佳棋邹来禧谢永敏
Owner JIANGXI UNIV OF SCI & TECH
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