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A kind of production method and production system of mesophase pitch

A mesophase pitch and production method technology, which is applied in the direction of chemical processing of tar pitch/petroleum pitch/natural pitch, etc., can solve the problems affecting the spinnability of mesophase pitch, the combination of additives and raw materials cannot be determined, and the influence of intermediate The uniformity and quality of phase asphalt can be solved to prevent the viscosity from increasing too fast, reduce the condensation reaction rate, and improve thermal stability and rheology.

Active Publication Date: 2022-06-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To sum up, at present, most of the mesophase pitch preparation process adopts batch operations, such as reactors. In order to prepare high-quality mesophase pitch, two or more processes are usually used for compounding, and the process is relatively complicated.
Additives and raw materials belong to different categories of additives. Because the combination of additives and raw materials cannot be determined, defects such as pores may appear after subsequent processing, carbonization, and graphitization, which will affect the spinnability of mesophase pitch and the performance of carbon fibers.
In addition, for reactor equipment, especially in the high-temperature reaction area, the side wall effect is more serious, and it is easy to form coke-like substances insoluble in quinoline on the reactor wall and the bottom of the reactor, which seriously affects the uniformity and quality

Method used

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  • A kind of production method and production system of mesophase pitch
  • A kind of production method and production system of mesophase pitch
  • A kind of production method and production system of mesophase pitch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] use figure 1 In the production system shown, the reaction unit A includes one reactor, the cooling rate of the quenching device is 180°C / S, the properties of the raw materials are shown in Table 1, the operating conditions are shown in Table 2, and the reaction results are shown in Table 3.

Embodiment 2

[0056] use figure 2 In the production system shown, the reaction unit A includes two reactors, namely a first reactor 16 and a second reactor 17 , and the reaction effluent 18 of the first reactor enters the second reactor 17 . The cooling rate of the quenching device is 180°C / S, the properties of the raw materials are shown in Table 1, the operating conditions are shown in Table 2, and the reaction results are shown in Table 3.

Embodiment 3

[0058] use figure 2 The production system shown, compared with Example 2, the operating conditions are slightly adjusted, the cooling rate of the quenching device is 150 ° C / S, the properties of the raw materials are shown in Table 1, the operating conditions are shown in Table 2, and the reaction results are shown in Table 3.

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Abstract

The invention discloses a production method and production system of mesophase pitch. The production method is that the raw material enters the reaction unit A after being heated, and the reaction effluent enters the reaction unit B after rapid cooling and is contacted with the carrier gas for treatment. The oil and gas products and mesophase pitch are obtained, and the oil and gas products further enter the fractionation system for processing. The production system includes a heating furnace, a reaction unit A, a quenching device, a reaction unit B and a fractionation system. The production method of the mesophase pitch not only has high yield of the target product and good quality controllability, but also can realize long-term stable continuous production.

Description

technical field [0001] The present invention relates to a production method and production system of mesophase pitch. Background technique [0002] Mesophase pitch is a nematic liquid crystal with optical anisotropy and is an important precursor of carbon materials, which can be used to prepare high value-added mesophase pitch-based carbon fibers, needle coke, foamed carbon and other carbon materials. The special structural characteristics of mesophase pitch endow these materials with excellent heat resistance, high thermal conductivity and high electrical conductivity, and have broad application prospects in aerospace, precision electronics, energy and many other fields. The raw materials used to prepare mesophase pitch have obvious diversity, such as pure aromatic hydrocarbons, petroleum pitch, coal tar, coal tar pitch, coal liquefaction residue, etc. The difference of raw materials leads to the diversity of preparation methods and preparation processes. At present, the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C3/02
CPCC10C3/02Y02E60/10
Inventor 武云初人庆方向晨
Owner CHINA PETROLEUM & CHEM CORP
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