Briquette raw material for coking technique

A raw material and process technology, which is applied in the coal raw material field of coking process, can solve the problems of low economic benefits in coking industry, expensive raw materials for coking process, and low-rank coal that cannot be applied on a large scale, and achieve the goal of solving low utilization and improving quality Effect

Active Publication Date: 2015-01-07
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the medium and low-rank coal in the prior art cannot be applied on a large scale, the raw materials o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Pulverizing sub-bituminous coal and mixing it with additives to form low-rank coal raw material, set aside;

[0025] (2) Use tamping equipment to carry out tamping molding to the pulverized 1 / 3 coking coal to form a non-low-rank coal-type coal seam; The low-rank coal raw material is tamped to form a low-rank coal-shaped coal seam above the non-low-rank coal-shaped coal seam, thereby forming the final coal-shaped raw material; wherein, in terms of mass, the amount of additives added is the second 40wt% of the bituminous coal quality, the addition of the sub-bituminous coal is 65wt% of the coal briquette raw material, the G value of the sub-bituminous coal is 45, and the volatile matter content is 65%. Asphaltene, the asphaltene loses 45% in dry distillation in the absence of air at 850°C;

[0026] (3) Push the briquette raw material into the coke oven for upgrading, control the upgrading temperature at 850°C, and upgrade the time for 16 hours, collect the overflowin...

Embodiment 2

[0029] (1) Pulverizing sub-bituminous coal and mixing it with additives to form low-rank coal raw material, set aside;

[0030] (2) Use tamping equipment to carry out tamping molding to the pulverized 1 / 3 coking coal to form a non-low-rank coal-type coal seam; The low-rank coal raw material is tamped and shaped to form a low-rank coal-shaped coal seam above the non-low-rank coal-shaped coal seam, thereby forming the final coal-shaped raw material; wherein, in terms of mass, the addition of additives is the second 35wt% of the bituminous coal mass, the addition of the sub-bituminous coal is 50wt% of the briquette raw material mass, the G value of the sub-bituminous coal is 40, the volatile content is 70%, and the auxiliary agent has a softening point of 115°C Asphaltenes, the asphaltenes lose 40% in dry distillation in the absence of air at 850°C;

[0031] (3) Push the briquette raw material into the coke oven for upgrading, control the upgrading temperature to 900°C, and the ...

Embodiment 3

[0034] (1) Pulverizing sub-bituminous coal and mixing it with additives to form low-rank coal raw material, set aside;

[0035] (2) Use tamping equipment to carry out tamping molding to the pulverized 1 / 3 coking coal to form a non-low-rank coal-type coal seam; The low-rank coal raw material is tamped and shaped to form a low-rank coal-shaped coal seam above the non-low-rank coal-shaped coal seam, thereby forming the final coal-shaped raw material; wherein, in terms of mass, the addition of additives is the second 30wt% of the bituminous coal mass, the addition of the sub-bituminous coal is 70wt% of the briquette raw material mass, the G value of the sub-bituminous coal is 35, the volatile matter content is 45%, and the auxiliary agent has a softening point of 120°C Asphaltenes, the asphaltenes lose 42% in dry distillation at 850°C in the absence of air;

[0036] (3) Push the briquette raw material into the coke oven for upgrading, control the upgrading temperature to 950°C, a...

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PUM

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Abstract

The invention provides a briquette raw material for a coking technique, which comprises a low-rank coal briquette layer formed by low-rank coal and an assistant, and a non-low-rank coal briquette layer formed by one or more of medium-rank coal, high-rank coal and medium-high-low coal, wherein the assistant is an organic binder of which the weight loss is less than 50% when being carbonized at 850 DEG C in the absence of air; the low-rank coal briquette layer is arranged on the non-low-rank coal briquette layer; and the low-rank coal accounts for 50-80 wt% of the briquette raw material. When being used for coking treatment, the briquette raw material solves the problems of low availability and surplus productivity of coking industry in the existing tamping cokery, and also solves the problem of limited application due to no large-scale industrialized equipment for low-rank coal. After the assistant and low-rank coal are mixed, the effective component in the assistant is beneficial to degradation of high-molecular polymers in the low-rank coal at high temperature and also beneficial to rupture of high polymers in the low-rank coal, thereby enhancing the oil gas yield in the technical process.

Description

technical field [0001] The invention relates to a coal raw material suitable for a coking process, in particular to a molded coal raw material for a coking process using an existing stamping furnace. Background technique [0002] Coal is the main energy source in my country, accounting for about 70% of the primary energy structure. In the long process of geological evolution, the formation of coal is affected by many factors, resulting in various types of coal. According to the structure and composition, coal is divided into three categories: lignite, bituminous coal and anthracite. Bituminous coal is divided into low-metamorphic bituminous coal and medium-metamorphic bituminous coal. Low-metamorphic bituminous coal is also called sub-bituminous coal, which is collectively referred to as "low-rank coal" together with lignite. . Low-rank coal is the product of the initial stage of coalification. It has the characteristics of low carbon content, high moisture, easy pulveriza...

Claims

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Application Information

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IPC IPC(8): C10B57/06C10B53/08
CPCC10B53/08C10B57/06
Inventor 林科杜明来
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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