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Preparation method of mesophase pitch

A technology of mesophase pitch and dimethyl sulfoxide is applied in the processing of tar pitch/petroleum pitch/natural pitch, chemically processing tar pitch/petroleum pitch/natural pitch, petroleum industry, etc. Complexity, high energy consumption, low price, simple preparation process and good optical structure

Active Publication Date: 2015-07-29
广饶县康斯唯绅新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned methods for preparing mesophase pitch all have problems such as complex process, high cost, and high energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1, add 150g DG-DSEO and 50gDG-FBWY to the autoclave, seal it and purge it with argon, raise the temperature to 450°C, and carry out carbonization at a constant pressure of 12MPa for 18h under stirring at 500r / min to obtain 98vol% optical components. Anisotropic mesophase pitch.

Embodiment 2

[0015] Example 2, add 180g DG-DSEO and 30g GD-SPWY into the autoclave, seal it and purge it with nitrogen, raise the temperature to 430°C, and carry out carbonization at a constant pressure of 15MPa for 15h under stirring at 800r / min to obtain 99vol% optical components. Anisotropic mesophase pitch.

Embodiment 3

[0016] Example 3, add 160g SZ-DSEO and 45g SZ-SPWY to the autoclave, seal it and purge it with argon, raise the temperature to 470°C, and carry out carbonization at a constant pressure of 15MPa for 18h under stirring at 600r / min to obtain 100vol% optical Anisotropic mesophase pitch.

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PUM

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Abstract

The invention relates to the technical field of petroleum deep processing, and particularly relates to a preparation method of mesophase pitch. The preparation method comprises the following steps: uniformly mixing dimethylsulfoxide extract oil with hydrogen cracking tail oil at a mass ratio of dimethylsulfoxide extract oil to hydrogen cracking tail oil being 6:4-9:1, carbonizing for 10-25 h in a high-pressure autoclave at 430-480 DEG C, 12-18 MPa, in an inert gas atmosphere and stirring condition to obtain the mesophase pitch, wherein the dimethylsulfoxide extract oil is the dimethylsulfoxide extract oil of naphthene base crude oil vacuum gas oil, the hydrogen cracking tail oil is tail oil obtained through fixed bed hydrocracking or suspended bed hydrocracking of naphthene base crude oil vacuum residuum. The preparation method of mesophase pitch has the outstanding advantages as follows: the sources of raw materials are extensive and the cost is low; a hydrogenation solvent and a catalyst are not needed, the preparation process is simple; the prepared mesophase pitch is low in softening point, good in optical structure and high in mesophase content.

Description

technical field [0001] The invention relates to the technical field of petroleum deep processing, in particular to a preparation method of mesophase pitch. Background technique [0002] Mesophase pitch is a kind of nematic liquid crystal mixture composed of various flat disk-shaped condensed ring aromatic hydrocarbons, also known as liquid crystal phase pitch. Mesophase pitch has the characteristics of liquid crystals and has special physical properties in terms of heat, light, electricity, and magnetism. Mesophase pitch has a wide range of sources, low price, excellent performance and strong processability, so it is recognized as an excellent raw material for the production of many functional materials. [0003] Chinese patent CN102899061 uses refined naphthalene as a raw material and anhydrous alumina as a catalyst to first synthesize naphthalene pitch, and then polymerize naphthalene pitch at 350~480°C at a stirring rate of 400~1000r / min for 3~24h to obtain high Pure me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/02
CPCC10C3/026
Inventor 刘东杨远兮吴中华侯绪连娄斌李明杜辉李敏张亚东于冉牛建萍常光凯叶家顺
Owner 广饶县康斯唯绅新材料有限公司
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