Preparing method of high-purity arene oligomerization asphalt

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...