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Coking process raw materials

A raw material and process technology, which is applied in the field of coal raw materials for the coking process using the existing tamping furnace, can solve the problems of expensive coking process raw materials, low-rank coal cannot be used on a large scale, and low economic benefits in the coking industry, and achieve development and take advantage of significant, easy-to-pull, non-chalking effects

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

[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 of the coking process are expensive, and the economic benefits of the coking industry are low, a raw material for the coking process is provided.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Pulverize the sub-bituminous coal and mix it with auxiliary agents, and use tamping equipment to carry out tamping and molding of the raw coal, wherein the added quality of the auxiliary agent is 40wt% of the quality of the sub-bituminous coal, and the G value of the sub-bituminous coal is 45. The part content is 65%, and the auxiliary agent is asphaltene with a softening point of 105°C, and the asphaltene loses 45% in dry distillation at 850°C in the absence of air;

[0026] (2) Push the formed raw coal into the coke oven for coking, control the coking temperature to 850°C, and coking time for 16 hours, collect the overflowing mixture of crude gas, tar and crude benzene, and obtain coke as a by-product;

[0027] Adopt conventional process to separate crude gas and tar, and further separate crude benzene from tar, the amount of said crude gas obtained is 650Nm 3 / t dry coal, the amount of the tar is 109kg / t dry coal, the amount of the by-product coke is 390kg / t dry ...

Embodiment 2

[0029] (1) Pulverize the sub-bituminous coal and mix it with auxiliary agents, and use tamping equipment to carry out tamping and molding of the raw coal, wherein the added quality of the auxiliary agent is 35wt% of the quality of the sub-bituminous coal, and the G value of the sub-bituminous coal is 40. The content is 70%, and the additive is asphaltene with a softening point of 115°C, and the asphaltene loses 40% in dry distillation at 850°C in the absence of air;

[0030] (2) Push the formed raw coal into the coke oven for coking, control the coking temperature to 900°C, and coking time for 15.5 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 from tar, the amount of said crude gas obtained is 680Nm 3 / t dry coal, the amount of the tar is 117kg / t dry coal, the amount of the by-product coke is 360kg / t dry coal, and ...

Embodiment 3

[0033] (1) Pulverize the sub-bituminous coal and mix it with auxiliary agents, and use tamping equipment to carry out tamping and molding of the raw coal, wherein the added quality of the auxiliary agent is 30wt% of the quality of the sub-bituminous coal, and the G value of the sub-bituminous coal is 35. The part content is 45%, and the auxiliary agent is asphaltene with a softening point of 120°C, and the weight loss of the asphaltene is 42% at 850°C in isolated air dry distillation;

[0034] (2) Push the formed raw coal into the coke oven for coking, control the coking temperature to 950°C, and coking time for 17 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 and tar, and further separate crude benzene from tar, the amount of said crude gas obtained is 450Nm 3 / t dry coal, the amount of the tar is 45kg / t dry coal, the amount of the by-product coke is 586kg / t...

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Abstract

The present invention provides coking process raw materials, which comprise low-rank coal and an auxiliary agent, wherein the auxiliary agent is an organic binder with air isolated dry distillation weightlessness of less than 50% at a temperature of 850 DEG C, and preferably the organic binder is asphaltene with a softening point of more than 100 DEG C. According to the present invention, with the raw materials, 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; and after the auxiliary agent and the low-rank coal are mixed, the degradation of the macromolecule polymer in the low-rank coal at the high temperature and the breaking of the macromolecule in the low-rank coal are easily achieved through the effective components in the auxiliary agent so as to improve the oil gas yield during the process, wherein the total amount of the oil gas is increased by more than or equal to 10%.

Description

technical field [0001] The invention relates to a coal raw material used in a coking process, in particular to a coal raw material used in 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 pulverization, ea...

Claims

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Application Information

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