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Adhesive-free briquette coking method

A binder-free, coal coking technology, used in coke ovens, special forms of dry distillation, petroleum industry, etc., can solve the problems of increasing coking costs, unfavorable for enterprises to reduce costs and increase efficiency, and achieve strong equipment versatility and thermal strength. The effect of improving indicators and reducing production costs

Inactive Publication Date: 2016-05-11
WUKUN STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of binder undoubtedly increases the cost of coking, and the corresponding increase in energy consumption of wind, water, steam, etc. is not conducive to further cost reduction and efficiency increase for enterprises

Method used

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  • Adhesive-free briquette coking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The coal blending structure is calculated by weight ratio: Bochi main coking coal 10%, mixed main coking coal 35%, mixed 1 / 3 coking coal 30%, Panz coal 15%, 1 / 3 coking coal 10%, with a total weight of 268.00kg.

[0028] Weigh the corresponding coal material according to the set coal blending structure, crush it until the particles with a particle size of <3mm account for 86.5% of the total coal material, mix well, and adjust the moisture content to 8% to obtain the blended coal. Send 25% of the blended coal into the roller forming briquetting machine, and make 67.00kg of briquetting coal with a forming pressure of 30kg. Mix the briquette coal with the remaining 201.00kg of mixed coal to make 268.00kg of mixed coal with a moisture content of 8%. Put the mixed coal into a 200kg coke oven, dry distillation at 1050~1010℃ for 17h, and then get 198.58kg of target coke.

[0029] The index test shows that: the volatile content of blended coal is 26.25%, the compressive strengt...

Embodiment 2

[0031] The coal blending structure is calculated by weight ratio: Bochi main coking coal 10%, mixed main coking coal 35%, mixed 1 / 3 coking coal 30%, Panz coal 15%, 1 / 3 coking coal 10%, with a total weight of 260.00kg.

[0032] Weigh the corresponding coal material according to the set coal blending structure, crush it until the particles with a particle size of <3mm account for 85.5% of the total coal material, mix well, and adjust the moisture content to 12% to obtain the blended coal. Send 25% of the blended coal to the double-roll forming briquetting machine, and make 65.00kg of briquette coal with a molding pressure of 40kg. The compressive strength of the briquette coal is 170~190N / ball. Mix the briquette coal with the remaining 195.00kg of mixed coal to make 260.00kg of mixed coal with a moisture content of 12%. Put the mixed coal into a 200kg coke oven, dry distillation at 1050~1010℃ for 16h, and then get 195.05kg of target coke.

[0033] The index test shows that: the...

Embodiment 3

[0035] The coal blending structure is calculated by weight ratio: 10% high-ash Ngui main coking coal, 35% mixed main coking coal, 30% mixed 1 / 3 coking coal, 15% Panz coal, 10% high-ash 1 / 3 coking coal, total weight 265.00 kg.

[0036] Weigh the corresponding coal material according to the set coal blending structure, crush it until the particles with a particle size of <3 mm account for 86.0% of the total coal material, mix well, and adjust the moisture content to 10% to obtain the blended coal. Send 20% of the blended coal to the roller forming briquetting machine, and make 53.00kg of briquette coal with a molding pressure of 25kg. The compressive strength of the briquette coal is 170~190N / ball. Mix the briquette coal with the remaining 212.00kg of mixed coal to make 265.00kg of mixed coal with a moisture content of 10%. Put the mixed coal into a 200kg coke oven, dry distillation at 1050~1010℃ for 16.5h, and then get 198.00kg of target coke.

[0037] The index test shows th...

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Abstract

The invention discloses an adhesive-free briquette coking method. The method includes the processes of coking coal preparation, briquette preparation, blended coal preparation and coking, to be more specific, weighing corresponding coal materials according to a set coal blending composition prior to crushing and uniform mixing, and adjusting the moisture content to 8-12% to obtain blended coal, wherein the coal blending composition comprises, by weight, 10% of prime coking coal, 35% of blended prime coking coal, 30% of blended 1 / 3 coking coal, 15% of plate minor coal and 10% of 1 / 3 coking coal; feeding 20-25% of the blended coal into a briquetting machine to prepare briquettes under the briquetting pressure of 25-40kg; uniformly mixing the briquettes with the rest blended coal to prepare the blended coal with the moisture content being 8-12%; feeding the blended coal into a coke oven, and performing destructive distillation at the temperature of 1050-1010 DEG C for 16-17h to obtain the target coke. The coking method is simple in process, high in equipment universality and efficient in production. Compared with the coke produced by a top loading coke oven, the coke produced with the coking method has the advantages that the cool strength index M10 of the coke is improved by 0.40-1.40%, and the heat intensity index CSR is increased by 1.07-1.75%.

Description

technical field [0001] The invention belongs to the technical field of coal blending coking, and in particular relates to a coking method for binder-free briquette coal. Background technique [0002] The traditional coal blending coking technology refers to taking out about 30.00% of the pulverized coal from the furnace, adding a certain amount of binder to knead and shape the coal, and mixing it with pulverized coal in a certain proportion. Effective measures to improve the quality and expand the consumption of weakly caking coal or non-caking coal. The current blended coal coking process must add a certain amount of binder during the coal production process. There are two representative coal blending processes: one is the coal material of compressed coal and the coal material in bulk. The same, that is, briquetting a part of the coking coal blend with a binder; the other is briquetting a part of the weakly caking coal in the coking coal blend with a part of a binder. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/08C10B57/04
CPCC10B53/08C10B57/04
Inventor 高云祥曾海梅廖景波李轶杨立新王映荣杨正林
Owner WUKUN STEEL
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