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Coal tar pitch deep processing method

A technology of coal tar pitch and deep processing, which is applied in the processing of tar pitch/petroleum pitch/natural pitch by distillation, and the processing of tar pitch/petroleum pitch/natural pitch by chemical method, etc. It can solve the problems of poor economy, difficult separation process, high investment, etc. problems, to achieve the effect of optimizing economic benefits, simple process operation and high safety factor

Active Publication Date: 2021-03-23
成都晟天源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The separation process of mesocarbon microspheres and asphalt mixture is also one of the focuses. Due to the characteristics of high viscosity and poor fluidity of asphalt mother liquor, the separation process is relatively difficult. Although centrifugation can effectively separate MCMB, it is expensive and expensive. High operating energy consumption makes it less economical

Method used

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  • Coal tar pitch deep processing method
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Coal tar pitch with a softening point of 20°C and a quinoline-insoluble content of 0.5% was selected as the raw material. After weighing, it was injected into a high-efficiency spheroidizing reactor, and the outer wall of the reactor was heated to 370°C by electric heating. ℃, keep the temperature for 3 hours, feed nitrogen nitrogen as a protective gas (the gas generated by the reaction system itself also plays a protective role), and raise the pressure to 0.5MPa. In order to make the heat transfer of the material in the spheroidization reactor more uniform, the reactor is equipped with a stirrer, and the reactor is equipped with an external circulation process. The upper part of the reactor is pumped out and then sent back to the reactor from the bottom. The circulation volume is 12m 3 / h, to further enhance mass and heat transfer. A mixture containing mesophase carbon microspheres and mesophase pitch is obtained through polymerization.

[0047] After the mixture come...

Embodiment 2

[0050] Select coal tar pitch with a softening point of 45°C and a quinoline-insoluble content of 0.93% as raw material, and inject it into a high-efficiency spheroidizing reactor after weighing. The outer wall of the reactor is heated to 380°C by electric heating ℃, keep the temperature for 4 hours, feed nitrogen nitrogen as a protective gas (the gas generated by the reaction system itself also plays a protective role), and raise the pressure to 0.7MPa. In order to make the heat transfer of the material in the spheroidization reactor more uniform, the reactor is equipped with a stirrer, and the reactor is equipped with an external circulation process. The upper part of the reactor is drawn out and then sent back to the reactor from the bottom. The circulation volume is 15m 3 / h, to further enhance mass and heat transfer. A mixture containing mesophase carbon microspheres and mesophase pitch is obtained through polymerization.

[0051] After the mixture comes out of the sphero...

Embodiment 3

[0056] Coal tar pitch with a softening point of 62°C and a quinoline-insoluble content of 3.05% was selected as the raw material. After weighing, it was injected into a high-efficiency spheroidizing reactor. The outer wall of the reactor was heated to 386 ℃, constant temperature for 5 hours, nitrogen nitrogen as a protective gas (the gas generated by the reaction system itself also plays a protective role), and the pressure is increased to 0.8MPa. In order to make the heat transfer of the material in the spheroidization reactor more uniform, the reactor is equipped with a stirrer, and the reactor is equipped with an external circulation process. The upper part of the reactor is drawn out and then sent back to the reactor from the bottom. The circulation volume is 15m 3 / h, to further enhance mass and heat transfer. A mixture containing mesophase carbon microspheres and mesophase pitch is obtained through polymerization.

[0057] After the mixture comes out of the spheroidizin...

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Abstract

The invention provides a coal tar pitch deep processing method, which comprises the following steps: injecting a coal tar pitch raw material into a reactor, introducing an inert gas as a protective gas, increasing temperature and then keeping temperature constant, and performing polymerization reaction to obtain a mixture containing mesocarbon microbeads and mesophase pitch; adding the mixture into an organic solvent for uniform mixing, and performing solid-liquid separation through a micro-scale filter to obtain a solid-phase material and a liquid-phase material; performing reduced pressure distillation on the liquid-phase material to recover the organic solvent, a reduced pressure distillation residue being the mesophase pitch, and drying the solid-phase material to obtain the mesocarbonmicrobeads. According to the coal tar pitch deep processing method, the mesocarbon microbeads with high added value can be obtained, and the method is high in yield, simple in process flow, energy-saving, environmentally friendly and low in cost.

Description

technical field [0001] The invention relates to the field of coal tar pitch, in particular to a method for deep processing of coal tar pitch. Background technique [0002] Coal tar pitch is a bulk product separated from coal tar processing, accounting for about 50% to 60% of coal tar, and its processing and utilization level is crucial to the entire coal tar processing. Coal tar pitch can be processed to obtain products with different uses, such as binders and impregnating agents used in the production of carbon materials, needle coke, mesocarbon microspheres, carbon fibers, anti-corrosion materials, fuels, etc. These products are used in metallurgy, carbon , chemical industry, building materials and other fields play a role that cannot be ignored. However, with the development of coal chemical industry, the increasing output of coal tar pitch makes the problems in its processing and utilization increasingly prominent. The main problems in my country's coal tar pitch proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10C3/02C10C3/06
CPCC10C3/02C10C3/06
Inventor 段海江马芝华于强
Owner 成都晟天源科技有限公司