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Raw material for increasing quality of low-rank coal by present tamping coke oven

A technology for tamping coke ovens and low-rank coals, which is applied in coke ovens, special dry distillation, and the petroleum industry, and can solve problems such as low utilization of tamping coke ovens, large-scale application of low-rank coals, and overcapacity

Active Publication Date: 2015-02-04
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 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 of using existing tamping coke ovens for low-rank coal production is provided. Upgrading Raw Materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (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;

[0027] (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;

[0028] 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...

Embodiment 2

[0030] (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;

[0031] (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;

[0032] 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 dr...

Embodiment 3

[0034] (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;

[0035] (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;

[0036] 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 ...

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Abstract

The invention provides a raw material for increasing quality of low-rank coal by a resent tamping coke oven. The raw material comprises low-rank coal and an auxiliary agent. The auxiliary agent is an organic binder with weightlessness being less than 50% under destructive distillation isolated from the air at 850 DEG C. Preferably, the organic binder is asphaltene with softening point being greater than 100 DEG C. By using the raw material as a raw material for increasing quality of low-rank coal by the use of a tamping coke oven, the problem that present tamping coke ovens have low availability and excess capacity exists in the coking industry is solved, and the problem that application of low-rank coal is limited because there is no large-scale industrial equipment is also solved. After the auxiliary agent is mixed with low-rank coal, active ingredients in the auxiliary agent are beneficial to degradation of high-molecular polymers in the low-rank coal at high temperature and fracture of macromolecules in the low-rank coal. Thus, output of oil gas is raised during the technological process, and the total output of oil gas is increased by more than 10%.

Description

technical field [0001] The invention relates to a coal raw material used in tamping coke ovens, in particular to a coal raw material for upgrading low-rank coal by using the existing tamping furnace, 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 initial stage of coalification....

Claims

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Application Information

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IPC IPC(8): C10B57/06C10B53/08
CPCC10B53/08C10B57/045C10B57/06
Inventor 林科杜明来
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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