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Method for preparing ordered needle coke through using coal tar pitch

A technology of coal tar pitch and needle coke, which is applied in the field of preparation of ordered needle coke from coal tar pitch, can solve the problems of electrical conductivity, high mechanical strength and thermal expansion coefficient, low carbon yield, poor thermal stability of coal tar pitch, etc., and achieve accurate data The effect of accuracy, good quality and high product purity

Inactive Publication Date: 2013-10-02
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0003] Coal tar is an important raw material for the coal chemical industry, which can be applied in various industrial fields. The substance with the largest content of coal tar pitch is carbon, which is the most important component of carbon materials. Carbon materials are a kind of high temperature resistant, resistant Non-metallic materials with high corrosion resistance, high mechanical strength and good oxidation resistance have been applied in the fields of aviation, aerospace, electronics and machinery; but coal tar pitch also has poor thermal stability, low carbon yield, high electrical conductivity, mechanical strength and thermal expansion coefficient Therefore, it is necessary to perform performance-enhancing transformation on coal tar pitch, improve its chemical and physical properties, overcome the disadvantages of mechanical properties, and make it more widely and more advanced.

Method used

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  • Method for preparing ordered needle coke through using coal tar pitch
  • Method for preparing ordered needle coke through using coal tar pitch
  • Method for preparing ordered needle coke through using coal tar pitch

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Embodiment Construction

[0069] The present invention will be further described below in conjunction with accompanying drawing:

[0070] figure 1 As shown in the figure, it is the preparation state diagram of coal tar pitch microspheres. The position and connection relationship of each part must be correct, and the operation should be carried out in sequence.

[0071] Quantities of chemicals used in preparation are determined in pre-set ranges in grams, milliliters, centimeters 3 is the unit of measurement.

[0072] The preparation of coal tar pitch microspheres is carried out in a tubular reactor, which is completed under heating, nitrogen filling, and a pressure of 4 MPa in the tube;

[0073] The tubular reactor is vertical, the lower part of the tubular reactor 1 is the reactor seat 2, and the upper part is the reactor cover 3; on the inner wall of the tubular reactor 1 is a resistance heater 8, and the outside of the resistance heater 8 is a heat insulation layer 24. Place the reaction tube 4 v...

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Abstract

The invention relates to a method for preparing ordered needle coke through using coal tar pitch. The method which aims at the disadvantages of the chemical and physical characteristics and the mechanical performances of coal tar pitch comprises the steps of removal of quinoline insoluble substances from coal tar pitch, distillation, coal tar pitch microsphere extraction, reduced pressure distillation, high temperature charring and high temperature calcining to prepare the ordered needle coke having a purity of 99%. The method has the advantages of advanced technology, full and accurate data, high product purity and good product quality, can be used in a plurality of industrial fields, and is a very ideal method for preparing ordered needle coke through using the coal tar pitch.

Description

technical field [0001] The invention relates to a method for preparing ordered needle coke by using coal tar pitch, which belongs to the technical field of preparation and application of high value-added chemical substances by coal tar pitch. Background technique [0002] The liquid product after coal pyrolysis is coal tar, and under the action of high temperature, coal tar undergoes high-temperature thermochemical transformation to form coal tar pitch, referred to as coal tar pitch. [0003] Coal tar is an important raw material for the coal chemical industry, which can be applied in various industrial fields. The substance with the largest content of coal tar pitch is carbon, which is the most important component of carbon materials. Carbon materials are a kind of high temperature resistant, resistant Non-metallic materials with high corrosion resistance, high mechanical strength and good oxidation resistance have been applied in the fields of aviation, aerospace, electron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B55/00C10C3/00
Inventor 解小玲曹青靳利娥张耀东张拯郭良辰
Owner TAIYUAN UNIV OF TECH
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