Powdered coal coking device and powdered coal coking method

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...

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

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