In the choice of catalyst and washing process improvements we achieved satisfactory results: 400 L of a xylene solvent and 24 kg of an AlCl3 solid powder were charged into the autoclave. The 800LC5 fraction was slowly added dropwise to the kettle under stirring, and the reaction temperature was controlled not to exceed 36C by cooling water, and the dropping time was about 6 to 8 hours. After the dropwise addition, the reaction was continued for 2 h. The polymerization solution was washed with an ethanol-water solution, neutralized to remove the catalyst, and then separated by standing to remove trace water. C5 petroleum resin and mixed solvent oil were obtained by distillation under reduced pressure. The mixed solvent oil is then fractionally fractionated to obtain C5 residual fraction and solvent which are not involved in the polymerization, and the solvent is recovered. In the production process of C5 petroleum resin, AlCl3 catalyst was used instead of AlCl3 catalyst. The reaction time was shortened by 2 to 3 times compared with the original AlCl3 catalyst. The reaction process was stable and the amount of catalyst was reduced, and the process of washing was alleviated. Demulsifier A avoids the emulsification phenomenon of water washing process, so that washing time than the original process time by 4 to 5 times, and greatly reduces the cost of production and energy consumption, product quality has improved. |