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Process for carrying out quality improvement on coal raw material containing low-rank coal by using stamp-charging coke oven

A technology for tamping coke ovens and low-rank coals, which is applied in coking ovens, the petroleum industry, special forms of dry distillation, etc. It can solve the problem of overcapacity in the coking industry, the inability to realize large-scale application of low-rank coals, and low utilization of tamping coke ovens and other issues to achieve the effect of improving quality

Active Publication Date: 2016-03-16
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

[0007] In order to solve the problem that the medium and 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 using tamping coke ovens to treat low-rank coal containing low-rank coals is provided. Coal raw material upgrading process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Pulverize sub-bituminous coal and mix it with additives to form low-rank coal raw material, and then mix it with pulverized 1 / 3 coking coal to form raw coal, and use tamping equipment to tamp the raw coal, wherein, by mass, The addition amount of auxiliary agent is 40wt% of the mass of sub-bituminous coal, the addition amount of said sub-bituminous coal is 65wt% of the mass of said raw coal, the G value of said sub-bituminous coal is 45, and the volatile matter content is 65%. The agent is asphaltene with a softening point of 105°C, and the asphaltene loses 45% in dry distillation in the absence of air at 850°C;

[0030] (2) Push the formed raw coal into the coke oven for upgrading, control the upgrading temperature to 850°C, and the upgrading time is 16 hours, collect the overflowing mixture of crude gas, tar, and crude benzene, and obtain coke as a by-product;

[0031] Adopt conventional process to separate crude gas and tar, and further separate crude benzene fro...

Embodiment 2

[0033] (1) Pulverize sub-bituminous coal and mix it with additives to form low-rank coal raw materials, and then form raw coal with pulverized 1 / 3 coking coal, and use tamping equipment to tamp and shape the raw coal, wherein, in terms of mass, auxiliary The added quality of the additive is 35wt% of the mass of the sub-bituminous coal, the added amount of the sub-bituminous coal is 50wt% of the mass of the raw coal, the G value of the sub-bituminous coal is 40, and the volatile content is 70%. It is an asphaltene with a softening point of 115°C, and the asphaltene loses 40% in dry distillation in the absence of air at 850°C;

[0034] (2) Push the formed raw coal into the coke oven for upgrading, control the upgrading temperature to 900°C, and upgrade the time for 15.5 hours, collect the overflowing mixture of crude gas, tar, and crude benzene, and obtain coke as a by-product;

[0035] Adopt conventional process to separate crude gas, tar, and further separate crude benzene fro...

Embodiment 3

[0037](1) Pulverize sub-bituminous coal and mix it with additives to form low-rank coal raw material, and then mix it with pulverized 1 / 3 coking coal to form raw coal, and use tamping equipment to tamp the raw coal, wherein, by mass, The added quality of auxiliary agent is 30wt% of the mass of sub-bituminous coal, the added amount of said sub-bituminous coal is 70wt% of the mass of said raw coal, the G value of said sub-bituminous coal is 35, and the volatile matter content is 45%. The agent is asphaltene with a softening point of 120°C, and the asphaltene loses 42% in dry distillation in the absence of air at 850°C;

[0038] (2) Push the formed raw coal into the coke oven for upgrading, control the upgrading temperature to 950°C, and the upgrading time for 17 hours, collect the overflowing mixture of crude gas, tar, and crude benzene, and obtain coke as a by-product;

[0039] Adopt conventional process to separate crude gas and tar, and further separate crude benzene from tar...

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Abstract

The present invention discloses a process for carrying out quality improvement on a coal raw material containing low-rank coal by using a stamp-charging coke oven. The process comprises: (1) crushing low-rank coal, mixing the crushed low-rank coal and an auxiliary agent to form a low-rank coal raw material, mixing the obtained low-rank coal raw material and a crushed non-low-rank coal raw material to form a raw material coal, and carrying out stamp-charging molding on the raw material coal by using stamp-charging equipment, wherein the low-rank coal is one or a plurality of materials selected from medium-rank coal, high-rank coal and medium-high-rank coal; and (2) pushing the molded raw material coal into a coke oven, carrying out quality improvement, and collecting the overflowed crude coal gas, tar and crude benzene mixture while obtaining the byproduct coke, wherein the quality improvement temperature is controlled at more than 800 DEG C, the time is not less than 15 h, and the auxiliary agent is an organic binder with air isolated dry distillation weightlessness of less than 50% at a temperature of 850 DEG C. According to the present invention, the process that the coal raw material containing the low-rank coal is subjected to quality improvement by using the stamp-charging coke oven is used, such that the problems of low existing stamp-charging coke oven utilization rate and excess coking industry production capacity are solved, and the problem that the application of the low-rank coal is limited due to no large-scale industrial equipment is solved.

Description

technical field [0001] The invention relates to a process for improving the quality of low-rank coal, in particular to a process for upgrading coal raw materials containing low-rank coal by using an existing tamping coke oven, and belongs to the technical field of upgrading and transforming low-rank coal. 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 init...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10B57/06
Inventor 林科杜明来
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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