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Powdered coal coking device and powdered coal coking method

A technology for pulverized coal and equipment, which is applied to pulverized coal coking equipment and coking field, can solve problems such as temperature imbalance, affecting tar quality, and unstable quality.

Inactive Publication Date: 2013-06-19
XINJIANG MEITE MAGNESIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing coal semi-coke pyrolysis furnace, whether it is an internal heating type or an external heating type, requires the particle size of the raw coal used to be between 20mm-80mm, and the pulverized coal below 20mm, due to small gaps, poor air permeability, and flame penetration Insufficient power, or poor heat conduction, etc., used for coking will lead to uneven temperature in different parts of the same coal seam, uneven pyrolysis, resulting in over-burning of some products, under-burning of some products, and unstable quality; at the same time, pyrolysis After the gas can not be discharged smoothly
In addition, the gas entrains dust and overflows, causing tar and dust to be unable to separate, affecting the quality of tar

Method used

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  • Powdered coal coking device and powdered coal coking method
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  • Powdered coal coking device and powdered coal coking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Example 1 Coking method of pulverized coal coking chamber 8 with internal heating structure

[0097] Such as figure 1 As shown, when the pulverized coal coking chamber 8 has an internal heating structure, the pulverized coal coking chamber 8 is divided into a preheating and drying zone 31, a pyrolysis and carbonization zone 32, a combustion coking zone 33 and a semi-coke cooling zone 34, wherein : the preheating and drying area 31 includes several heat exchange units located at the upper part of the carbonization chamber for preheating and drying of pulverized coal; The dried pulverized coal is subjected to low-temperature pyrolysis, and the volatile matter in the pulverized coal is dry-distilled; the combustion and coking zone includes several heat exchange units located in the middle and lower part of the carbonization chamber, which are used to generate heat carrier gas, and pyrolyze the pyrolysis and carbonization zone. The pulverized coal is further pyrolyzed at m...

Embodiment 2

[0103] Example 2 Coking method of pulverized coal coking chamber 8 with external heating structure

[0104] Such as figure 2 As shown, when the pulverized coal coking chamber 8 is an external heating structure, the carbonization chamber is divided into a preheating and drying zone 31, a pyrolysis and carbonization zone 32, and a semi-coke cooling zone 34, wherein: the preheating and drying zone 31 includes Several heat exchange units in the upper part of the chamber are used for preheating and drying of pulverized coal; the pyrolysis and carbonization area contains several heat exchange units located in the middle and lower parts of the carbonization chamber for pyrolysis of preheated and dried pulverized coal , to dry out the volatile matter in pulverized coal to produce powdery semi-coke; the semi-coke cooling zone includes several heat exchange units located in the lower part of the carbonization chamber and a curved semi-coke discharge channel, which is used to use high-t...

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Abstract

The invention discloses a powdered coal coking device and a powdered coal coking method. The powdered coal coking method includes: installing declivitous powdered coal bearing plates in a carbonization chamber layer by layer; forming multiple layers of heat exchanging units communicated mutually by utilization of the multiple powdered coal bearing plates, wherein a powdered coal accumulation region and a gas flow region which are based on a powdered coal bearing plate are arranged on each layer of heat exchanging unit, so that a powdered coal coking environment is formed in which powdered coal and gas can flow; distributing the powdered coal to each layer of the heat exchanging unit from top to bottom to enable a powdered coal layer distributed in a slanted mode to be accumulated on the powdered coal accumulation region on each heat exchanging unit; and by utilization of the gas flow region of each layer, heat-carrying gas generated through combustion or heating flowing to each heat exchanging region from bottom to top and exchanging heat with the powdered coal layer of each heat exchanging unit to generate powdery semi-coke, coal gas and coal tar.

Description

technical field [0001] The invention relates to the technical field of making coke from coal, in particular to a pulverized coal coking equipment and a coking method. Background technique [0002] Semi-coke, also known as semi-coke, is a combustible solid product obtained by low-temperature dry distillation of raw coal. The raw coal removes pyrolysis water, tar, part of sulfur and gas during the rapid pyrolysis process. The yield of semi-coke made from raw coal is about 50%-70% of the mass of raw coal. [0003] Semi-burnt black porous, the main components are carbon, ash and volatile matter. Its ash content depends on the raw coal quality, and the volatile content is about 5%-20% (by mass). Compared with coke, it has high volatile content, large porosity and low mechanical strength. It is more reactive than carbon monoxide, steam or oxygen. Semi-coke is a good smokeless fuel with high calorific value. It is mainly used as industrial or civil fuel, and also used in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B15/00C10B17/00
CPCC10B49/06C10B3/00C10B53/04Y02P20/129
Inventor 陈华金
Owner XINJIANG MEITE MAGNESIUM
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