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Method for producing high-quality vitrinite coal

A production method and vitrinite technology are applied in the production field of high-quality vitrinite coal to achieve the effects of high vitrinite content, low cost and low ash content

Inactive Publication Date: 2017-01-04
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technologies are only limited to the separation and purification of coal microcomponents, so there is an urgent need for a separation method for the modification, upgrading and further purification of coal microcomponents

Method used

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  • Method for producing high-quality vitrinite coal
  • Method for producing high-quality vitrinite coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: The specific process of the production method of this high-quality vitrinite coal is as follows.

[0021] (1) Dry the raw coal at 60°C for 10 hours, with a moisture content of 1.4%; then crush it into coal powder with a particle size of ≤2.8mm.

[0022] (2) Add light oil to coal powder and stir evenly, coal powder:light oil=1:1 (mass ratio); then heat to 250°C and react for 60 minutes.

[0023] (3) After the reaction material is cooled to room temperature, it is filtered with a positive pressure filter, and the filtered residue can be used as coal for coking; the filtrate is added with toluene and stirred thoroughly and then allowed to stand for 24 hours; filtrate:toluene=1:2 (volume).

[0024] (4) The high-quality vitrinite coal is obtained by filtering the feed liquid after standing; light oil and toluene can be obtained from the mixed liquid by vacuum distillation. The yields of vitrinite coal and residue obtained in this embodiment are shown in Table ...

Embodiment 2

[0025] Embodiment 2: The specific process of the production method of this high-quality vitrinite coal is as follows.

[0026] (1) Dry the raw coal at 80°C for 2 hours, with a moisture content of 2%; then crush it into coal powder with a particle size of ≤2.6mm.

[0027] (2) Add washing oil and light oil to the coal powder and stir evenly, coal powder: (washing oil and light oil) = 1:3 (mass ratio), the volume ratio of washing oil and light oil is 2:1; then heat To 320°C, react for 40min.

[0028] (3) After the reaction material is cooled to room temperature, it is filtered with a positive pressure filter, and the filtered residue can be used as coal for coking; the filtrate is added with diethyl ether and stirred thoroughly and then allowed to stand for 36 hours; filtrate:diethyl ether=1:1 (volume).

[0029] (4) The high-quality vitrinite coal is obtained by filtering the feed liquid after standing; the distillate oil of coal tar and ether can be respectively obtained from t...

Embodiment 3

[0030] Embodiment 3: The specific process of the production method of this high-quality vitrinite coal is as follows.

[0031] (1) Dry the raw coal at 90°C for 6 hours, with a moisture content of 0.7%; then crush it into coal powder with a particle size of ≤3.0mm.

[0032] (2) Add coal tar to coal powder and stir evenly, coal powder: coal tar = 1:5 (mass ratio); then heat to 300°C and react for 30 minutes.

[0033] (3) After the reaction material is cooled to room temperature, it is filtered with a positive pressure filter, and the filtered residue can be used as coal for coking; the filtrate is added with an organic solvent and stirred for 48 hours; filtrate: organic solvent = 1:6 (volume) , the organic solvent is benzene and ethanol, the volume ratio is 1:1.

[0034] (4) The high-quality vitrinite coal is obtained by filtering the feed liquid after standing; the mixed liquid is distilled under reduced pressure to obtain coal tar and organic solvent respectively. The yields...

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Abstract

The invention discloses a method for producing high-quality vitrinite coal. The production method comprises a step (1) of drying and smashing raw material coal to obtain pulverized coal; a step (2) of adding coal tar into the pulverized coal and performing stirring evenly, performing heating reaction, and obtaining a reaction material; a step (3) of filtering the reaction material to filter out residue, adding an organic solvent in filtrate, performing mixing evenly and standing, and performing filtration to obtain the vitrinite coal. The method has no limitation on requirements for the raw material coal, and low-order lignite and high-order anthracite are suitable; another kind of raw material coal tar is easy to obtain and cheap; and byproduct residue can serve as coking coal to be used for coal blending for coking. According to the method, the coal tar and the organic solvent can be recycled by reduced pressure distillation and can be recycled. The product obtained through the method is the high-purity high-quality vitrinite coal, the vitrinite content is as 95% or above, and 80% or above of ingredients are homogenic vitrinite. The yield is 30% to 80%. The method has the advantages of being low in raw material requirement, environmentally friendly, free of pollution, simple in process and low in cost and the like.

Description

technical field [0001] The invention relates to a coal upgrading and modifying technology, in particular to a production method of high-quality vitrinite coal. Background technique [0002] Coal is a mixture of various structural forms of organic matter and small amounts of different types of inorganic matter. From the perspective of coal petrology, coal is a mixture of various microscopic components, including vitrinite, exinite, inertinite, semi-vitrinite and minerals. Among them, vitrinite is further divided into homogeneous vitrinite, matrix vitrinite, and agglomerative vitrinite. The homogeneous vitrinite pyrolyzes during the coke formation process to generate non-volatile liquid phase products, which bind other inert vitrinites. The components make it form high-quality coke and are the most important active components that determine the quality of coke. The upgrading and modification of coal microcomponents not only has important theoretical significance, but also ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/04C10L9/00
Inventor 黄世平李立业田京雷刘需张雲飞刘宏强刘洁
Owner HEBEI IRON AND STEEL