Preparing method of high-purity arene oligomerization asphalt

A technology of aromatic hydrocarbons and asphalt, which is applied in the field of synthesis of mesophase asphalt precursors, can solve the problems of harsh reaction conditions, strong corrosion of equipment, and difficulty in purification, and achieve the effect of easing reaction conditions, ensuring environmental protection and safety, and good controllability of the reaction

Inactive Publication Date: 2013-03-20
SICHUAN CHUANGYUE CARBON MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention mainly aims at the problems of harsh reaction conditions, strong corrosion to equipment, high cost and difficult purification in the existing method for preparing high-purity aromatic hydrocarbon oligomerization pitch, and provides a method with simple process, mild reaction conditions, high conversion rate and high product purity. Preparation method of high-purity aromatic hydrocarbon oligomerization pitch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of high-purity aromatic hydrocarbon oligomerization pitch, passing refined naphthalene into a steel-lined polytetrafluoroethylene reactor with an effective volume of 10L, and then adding catalyst anhydrous hydrogen fluoride and boron trifluoride complex according to the amount of substance The ratio of 20:1 is passed into the catalyst feeding system, and after mixing evenly, the catalyst is input into the steel-lined polytetrafluoroethylene reactor through the feeding system according to the ratio of catalyst to refined naphthalene mass ratio of 10:1, and after mixing evenly React at a temperature of 80°C and a pressure of 0.4MPa for 10 hours, then pass the material in the steel-lined polytetrafluoroethylene reactor into a second-stage reactor made of monel alloy at 140°C and a pressure of 0.1MPa After reacting for 10 hours, the material in the second-stage reactor is transported to the corrosion-resistant film evaporator made of monel alloy through ...

Embodiment 2

[0028]A preparation method of high-purity aromatic hydrocarbon oligomerization pitch, passing durene into a monel alloy reactor with an effective volume of 10L, and then using the catalyst anhydrous hydrogen fluoride and boron trifluoride in a ratio of 10:1 according to the amount of substances The ratio is passed into the catalyst feeding system. After mixing evenly, the catalyst is input into the monel alloy reactor through the feeding system according to the ratio of catalyst to durene mass ratio of 20:1. After mixing evenly, the temperature is 120°C and the pressure is 0.8 React under MPa condition for 20hr, then pass the material in the monel alloy reactor into the second-stage reactor made of monel alloy, react for 30hr under the condition of 0.2MPa at 160°C, and then pass the material in the second-stage reactor The material is transported to a corrosion-resistant film evaporator made of monel alloy through a gear metering pump made of monel alloy to remove residual cata...

Embodiment 3

[0031] A preparation method of high-purity aromatic hydrocarbon oligomerization pitch, methylnaphthalene is passed into a monel alloy reactor with an effective volume of 10L, and then the catalyst anhydrous hydrogen fluoride and boron trifluoride are 30:1 according to the amount of substances The ratio is passed into the catalyst feeding system, and after mixing evenly, the catalyst is fed into the monel alloy reactor through the feeding system according to the mass ratio of the catalyst to the mixture of methylnaphthalene and anthracene at a ratio of 50:1. , reacted under the condition of 0.6MPa for 40hr, then passed the material in the monel alloy reactor into the second-stage reactor made of monel alloy, reacted at 140°C for 25hr under the condition of 0.2MPa, and then passed the second-stage The material in the reactor is transported to the corrosion-resistant film evaporator made of monel alloy through the gear metering pump made of monel alloy to remove the residual catal...

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Abstract

The invention belongs to the technical field of mesophase asphalt precursor synthesis methods, and particularly relates to a preparing method of high-purity arene oligomerization asphalt. The preparing method mainly solves the problems that according to an existing preparing method of the high-purity arene oligomeriation asphalt, reaction conditions are rigid, corrosion for equipment is strong, the cost is high and purification is difficult. The technical scheme of the preparing method of the high-purity arene oligomerization asphalt includes that arene chemical compounds are guided into a first stage reactor, catalysts are guided into a catalyst feeding system, after uniform mixing, the catalysts are input into the first stage reactor through the feeding system, after uniform mixing and reaction for 1-50 hours, materials in the first stage reactor are guided into a second stage reactor to react, materials in the second stage reactor are conveyed to a corrosion-resistant film evaporator, the residual catalysts are eliminated, and the arene oligomerization asphalt is formed. The preparing method of the high-purity arene oligomerization asphalt has the advantages of good reaction controllability, low-temperature efficient reaction, catalyst recycling, and good asphalt performance, and the like.

Description

technical field [0001] The invention belongs to the technical field of synthesis methods of mesophase pitch precursors, and in particular relates to a preparation method of high-purity aromatic hydrocarbon oligomerization pitch. Background technique [0002] Mesophase pitch is the precursor raw material for preparing high-performance pitch-based carbon fiber, needle coke, C / C composite and other advanced carbon materials. High-performance carbon materials generally require pitch to have the characteristics of less heteroatoms, low ash content, high aromaticity, low condensation degree, neat molecular arrangement, high carbon yield, and good fluidity. However, it is difficult for general petroleum asphalt and coal tar pitch to meet the above requirements. This is mainly due to the complexity of the geological formation process. Both the chemical composition and the molecular structure are greatly affected by the place of origin, especially when they generally contain a certai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/02
Inventor 伍孝余洋林源永学健
Owner SICHUAN CHUANGYUE CARBON MATERIAL
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