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Method for quickly producing coke through microwave heating

A technology of microwave heating and microwave generating device, applied in coke oven, petroleum industry and other directions, can solve problems such as low production efficiency, uneven heat transfer, long pyrolysis time, etc., and achieve short production cycle, high comprehensive utilization rate of resources, The effect of stable product quality

Inactive Publication Date: 2009-12-02
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of the above furnace types adopt the external heating type, that is, the outer furnace wall of the carbonization chamber is used to transfer heat to the coal material. Although the quality of the gas produced is stable, the process has uneven heat transfer, long pyrolysis time, and relatively low production efficiency. And other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take a certain amount of coking blend coal, mix gas coal, coking coal, 1 / 3 coking coal, fat coal, etc. in a certain proportion, and crush to a certain particle size. Put it into a microwave-heated reactor with a microwave frequency of 2450MHz, heat it to 900°C-1200°C, and pyrolyze it for 60-90min to produce three products: coke, coal tar and gas. The test result of coke strength is: coke strength M 40 86.3%, M 10 was 7.3%. The results of coke composition analysis are shown in Table 1, and the gas composition analysis is shown in Table 2.

[0020] Table 1: Coke composition (%)

[0021] Element

C

A d

V daf

S t

content

82.1

11.74

0.8

0.46

[0022] Table 2: Gas Composition (%)

[0023] Element

Embodiment 2

[0025] Take a certain amount of coking coal and crush it until the particle size is less than 3mm, accounting for more than 80%, place it in the coal pyrolysis reaction container, place the microwave generator outside the coal pyrolysis device for external heating, the microwave frequency is 2450MHz, and heat to 1000 ℃-1100℃, pyrolysis for 60-90min, the coke, coal tar and gas produced in the experiment. Coke strength M 40 87.1%, M 10 7.5%. The gas composition is shown in Table 3.

[0026] Table 3: Gas Composition (%)

[0027] Element

[0028] The applicable coal type of the method of the present invention is mainly some coal types used in coking, such as coking coal, coking blending coal, rammed coal, cold-pressed coking coal, etc. In a short time, the temperature can be raised to the temperature range required for coking, and the volatile components in the coal material can be fully pyrolyzed to finally generate coke, coal tar and gas. The method can be used i...

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Abstract

The invention discloses a method for quickly producing coke through microwave heating, which adopts a microwave generator as a heating heat source, wherein the microwave frequency is between 300 and 300,000 MHz, and the coals for coking are heated to a temperature of between 900 and 1,100 DEG C to perform high temperature carbonization so as to generate the coke, coal tar and coal gas. The coal charges processed by the method can raise the temperature to the temperature range required by the coking in a short time under the action of microwaves, and the volatile components in the coal charges can be sufficiently pyrolyzed to finally generate the coke, the coal tar and the coal gas. The method can be applied to the pyrolytic process of coking coal and the processes of extracting the coal tar and the coal gas through coal pretreatment, preheating coking coal or preparing formed coke and the like in electric power plants, and has the characteristics of short flow, short cycle, high efficiency, stable product quality, and high resource comprehensive utilization rate.

Description

technical field [0001] The invention belongs to the technical field of coal pyrolysis, and relates to a method for rapidly producing coke by microwave heating. The method is mainly used in high-temperature pyrolysis of raw coal to produce coke, coal tar and gas. It can also be used for coal drying, thermal power plant and boiler pretreatment before coal is put into the furnace, and extracts coal tar and valuable gas components in coal. Background technique [0002] Coking is also called high-temperature coking and high-temperature dry distillation. It is a kind of coal dry distillation. It refers to the process of heating coal to 900 ° C ~ 1100 ° C under the condition of isolation of air, resulting in thermal decomposition to produce coke, coal tar, crude benzene, gas and other products. process. When the temperature of the coal material is higher than 100°C, the moisture in the coal is evaporated; when the temperature rises above 200°C, the bound water in the coal can be r...

Claims

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Application Information

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IPC IPC(8): C10B57/16
Inventor 兰新哲马红周宋永辉赵西成周军张秋利
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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