Coal pitch quality-divided treatment method for preparing nuclear graphite material

A technology of quality separation treatment and coal tar pitch, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., to reduce low value-added products, promote development, and improve quality

Active Publication Date: 2021-04-23
鞍山中特新材料科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, for the preparation of nuclear graphite in China, there is a lack of high-quality and efficient utilization technologies that can improve the quality of nuclear graphite and increase the added value of coal tar pitch.

Method used

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  • Coal pitch quality-divided treatment method for preparing nuclear graphite material

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Embodiment Construction

[0032] The present invention will be described in detail below through specific examples, but the use and purpose of these exemplary embodiments are only used to exemplify the present invention, and do not constitute any form of any limitation to the actual protection scope of the present invention, nor will the present invention The scope of protection is limited to this.

[0033] 【Example】

[0034] A coal tar pitch separation treatment method for preparing nuclear graphite material, the method comprises the steps of:

[0035] (1) The mixture of kerosene and washing oil is used as mixed solvent and coal tar pitch to stir evenly in a mixing container, then left to stand and separated to obtain light phase material and heavy phase material;

[0036] (2) The light phase material is flashed at a vacuum degree of -0.07MPa and the tower top temperature is 110°C to obtain refined pitch; the heavy phase material is flashed at a vacuum degree of -0.09MPa and the tower top temperature...

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Abstract

The invention discloses a coal pitch quality-divided treatment method for preparing a nuclear graphite material. According to the method, coal pitch is subjected to quality separation treatment to obtain binder pitch, refined pitch and impregnant pitch, and the binder pitch, the refined pitch and the impregnant pitch are matched with mesocarbon microbeads, thermal cracking carbon black and graphite powder to be used for preparing the nuclear graphite material. According to the method, the quality of the nuclear graphite can be improved, low-additional-value products of the coal pitch are reduced, efficient utilization of the coal pitch can be achieved, and development of the deep processing industry of the coal pitch is promoted.

Description

technical field [0001] The invention belongs to the technical field of carbon materials, and relates to a coal tar pitch separation treatment method for preparing nuclear graphite materials. Background technique [0002] Coal tar pitch is the bulk residue after distillation and extraction of coal tar, and its yield is generally 50% to 60%. The processing and utilization level of coal tar pitch is very important to increase the added value of coal tar processing products. The "Decree No. 29 of the National Development and Reform Commission of the People's Republic of China" that will be implemented in 2020 points out in the industrial structure adjustment guidance catalog that: Encourage the high value-added utilization of coal tar, coal tar carbon-based materials, and coal tar pitch to produce needle coke and other technologies. development and application. [0003] Coal tar pitch has high carbon content, good fluidity, and is easy to graphitize. It can be used in the prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/52C04B35/622C01B32/205
CPCC04B35/522C04B35/622C01B32/205Y02E60/10
Inventor 叶保卫蔡闯于银萍马婵赵亚楠李荣娇张淼张微徐超
Owner 鞍山中特新材料科技有限公司
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