Technology for coking briquette raw material containing low-rank coal

A low-rank coal and non-low-rank coal technology, applied in coke ovens, petroleum industry, special forms of dry distillation, etc., can solve problems such as overcapacity, low-rank coal cannot be applied on a large scale, and low utilization of stamped coke ovens. , to achieve the effect of improving quality

Active Publication Date: 2016-03-30
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 low-rank coal cannot be applied on a large scale in the prior art and the problems of overcapacity in the existing coking industry and low utilization of tamping coke ovens, a method for coking raw materials containing low-rank coal is provided. craft

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Pulverizing sub-bituminous coal and mixing it with additives to form low-rank coal raw material, set aside;

[0033] (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;

[0034] (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

[0038] (1) Pulverizing sub-bituminous coal and mixing it with additives to form low-rank coal raw material, set aside;

[0039] (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;

[0040] (3) Push the briquette raw material into the coke oven for upgrading, control the upgrading temperature to 900°C, and the ...

Embodiment 3

[0044] (1) Pulverizing sub-bituminous coal and mixing it with additives to form low-rank coal raw material, set aside;

[0045] (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;

[0046] (3) Push the briquette raw material into the coke oven for upgrading, control the upgrading temperature to 950°C, a...

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Abstract

The invention discloses a technology for coking a briquette raw material containing low-rank coal. The technology comprises (1) crushing low-rank coal and mixing with an auxiliary agent, so as to form a low-rank coal raw material; (2) firstly performing pressurized molding on crushed middle-rank coals, high-rank coals or one or more of middle-rank coals and high-rank coals, so as to form a non-low-rank coal briquette layer, adding the low-rank coal raw material into the non-low-rank coal briquette layer, continuing to perform pressurized molding on the low-rank coal raw material, so as to form a low-rank coal briquette layer on the non-low-rank coal briquette layer and form the final briquette raw material; and (3) pushing the briquette raw material into a coke oven for coking, wherein the auxiliary agent is an organic binder of which the destructive-distillation weight loss is less than 50% at 850 DEG under the air insulation condition. The technology for coking the briquette raw material containing low-rank coal solves the problem that the conventional stamping charging coke oven is low in utilization degree and production power is excess in coking industry, and also solves the problem that application of low-rank coal is limited because of no large-scale industrialized equipment.

Description

technical field [0001] The invention relates to a low-rank coal coking process, in particular to a low-rank coal coking process using an existing tamping furnace, and belongs to the technical field of low-rank coal coking conversion. 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 cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/08
Inventor 林科杜明来
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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