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Method for coal coking and blending based on organic sulfur-enriched high sulfur coke and fat coal

A technology of organic sulfur and coking coal, which is applied in the field of coking coal blending by using low-quality high-sulfur coking coal, can solve the problems of restricting the use of high-sulfur coke and fat coal, and affecting the quality of coke, so as to save high-quality coking coal resources and reduce coking Effect of improving cost and coke quality

Inactive Publication Date: 2015-12-30
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The limitations of the existing technology for removing organic sulfur in coal have seriously affected the quality of coke, and also severely restricted the use of high-sulfur coke and fat coal in coking coal blending

Method used

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  • Method for coal coking and blending based on organic sulfur-enriched high sulfur coke and fat coal
  • Method for coal coking and blending based on organic sulfur-enriched high sulfur coke and fat coal
  • Method for coal coking and blending based on organic sulfur-enriched high sulfur coke and fat coal

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Experimental program
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Effect test

Embodiment 1

[0026] The mass percentage composition of a conventional low-sulfur coking coal is: 30% low-sulfur fat coal, 45% low-sulfur coking coal, 1 / 3 coking coal 10%, and lean coal 15%. After testing its quality index is: volatile matter V daf 25.13%, Ash A d 9.26%, sulfur content S daf 0.75%, the cohesion index G value is 82, and the maximum thickness of the gelatinous layer is Y19mm.

[0027] This embodiment improves the above-mentioned coking coal blending.

[0028] Raw materials for improved use include high-sulfur fertile coal, low-rank bituminous coal and coal tar pitch.

[0029] Quality index of high-sulfur fertile coal: volatile matter V daf 23%, Ash A d 8.6%, sulfur content S daf 3%, the cohesion index G value is 88, and the maximum thickness of the gelatinous layer is Y20mm. Among them, the percentage of organic sulfur content in the total sulfur content is 68wt%.

[0030] Quality index of low rank bituminous coal: volatile matter V daf 38%, sulfur 0.26wt%, ash 9wt%....

Embodiment 2

[0040] Low-sulfur coking coal is selected from a blend of fat coal, coking coal, 1 / 3 coking coal, and lean coal, and the blending amounts are 30%, 45%, 10%, and 15% respectively in terms of mass percentage. The high-sulfur coking coal was replaced by low-sulfur coking coal at a ratio of 10%, and the quality indicators of the primary modified blended coal obtained after mixing are shown in Table 2.

[0041]

[0042] It can be seen from Table 2 that the sulfur content of the primary modified blend coal does not meet the process requirements of ≤0.9%, and then a low-rank bituminous coal with a volatile content of 38% is selected as a high-volatile non-coking coal, and its sulfur content is 25% % is blended into the primary modified blending coal to obtain the secondary modified blending coal, and its quality indicators are shown in Table 3.

[0043]

[0044] It can be seen from Table 3 that after adding high volatile non-coking coal, the sulfur content of the obtained secon...

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Abstract

The invention relates to a method for coal coking and blending based on organic sulfur-enriched high sulfur coke and fat coal. The method comprises the following steps: replacing 5 to 15% of low-sulfur fat coal and / or low-sulfur coke coal in low-sulfur coking coal with organic sulfur-enriched high-sulfur fat coal or high-sulfur coke coal to obtain primary modified blend coal; then blending 20 to 40% of high-volatile-component low-sulfur non-coking coal to obtain secondary modified blend coal; and finally blending 1 to 8% of adhesive to obtain modified blend coal for coking. The modified blend coal obtained by the method disclosed by the invention can be coked according to a normal coking step. According to the method for coal coking and blending, high-quality coking coal resources can be saved, poor-quality high-sulfur coking coal is reasonably utilized, the resource range of coking coal is expanded, and the coal blending cost is reduced.

Description

technical field [0001] The invention relates to a coking coal blending method, in particular to a coking coal blending method using low-quality high-sulfur coking coal. Background technique [0002] my country is rich in coal resources, but the regional distribution is uneven, and the proportion of high-quality coal resources suitable for coking is not high. The combination of fat coal, coking coal and lean coal still does not reach 50% of the coking coal reserves, of which nearly 1 / 2 Most of the fat coal and lean coal, and nearly 1 / 3 of the coking coal are high-sulfur coals. With the increase of mining years and depths of various coal mines, from the perspective of coal quality, the overall quality of coking coal is in a downward trend, especially the main coking coal with high ash and high sulfur has gradually become the main part of resources. Quality management and coal blending coking put forward higher requirements. [0003] Under the general background of the transfo...

Claims

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Application Information

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IPC IPC(8): C10B57/04
Inventor 王美君常丽萍任秀蓉申岩峰王建成鲍卫仁
Owner TAIYUAN UNIV OF TECH
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