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A coking process containing low-rank coal

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

Active Publication Date: 2018-10-09
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 of large-scale application of low-rank coal in the existing technology and the problems of overcapacity in the existing coking industry and low utilization of tamping coke ovens, a coking process containing low-rank coal is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Pulverizing sub-bituminous coal and mixing it with additives to form low-rank coal raw material, set aside;

[0032] (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;

[0033] (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

[0036] (1) Pulverizing sub-bituminous coal and mixing it with additives to form low-rank coal raw material, set aside;

[0037] (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;

[0038] (3) Push the briquette raw material into the coke oven for upgrading, control the upgrading temperature to 900°C, and the up...

Embodiment 3

[0041] (1) Pulverizing sub-bituminous coal and mixing it with additives to form low-rank coal raw material, set aside;

[0042] (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;

[0043] (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 coking process containing low-rank coal. The coking process comprises the following steps: (1) crushing low-rank coal, and mixing with an auxiliary agent to form a low-rank coal raw material; (2) firstly performing pressure forming on one or more of crushed middle-rank coal, high-rank coal or intermediate-high-rank coal to form a non-low-rank-coal type coal bed; and adding the low-rank coal raw material on the non-low-rank-coal type coal bed, and continuously performing pressure forming on the low-rank coal raw material to form a low-rank coal type coal bed which is positioned on the non-low-rank-coal type coal bed so as to form a final molded coal raw material; and (3) pushing the molded coal raw material into a coke oven for coking, wherein the weight loss of the auxiliary agent caused by destructive distillation in isolating air at 850 DEG C is less than that of 50% of an organic binding agent. By adopting the coking process containing the low-rank coal disclosed by the invention, the problems of low availability of an existing tamping coke oven and excess capacity in the coking industry can be solved, and the problem that the application of the low-rank coal is limited because no large-scale industrial equipment is provided also can be solved.

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