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本发明公开了一种制备高纯度双环戊二烯(DCPD)的方法。以粗双环戊二烯为原料,在解聚过程中加入稀释剂,双环戊二烯与稀释剂按0.5~5的比例混合后进入解聚精馏塔;在常压下,解聚温度为160℃~200℃,回流比为0.5~5,解聚时间为1h~3h。塔顶获得高纯度的环戊二烯(CPD),环戊二烯再经一管式反应器,反应温度为 40℃~120℃,反应压力为(0.1~1.5)MPa,停留时间为 4h~10h,最终获得纯度
The invention discloses a method for preparing high-purity dicyclopentadiene (DCPD). Crude dicyclopentadiene raw material, adding a diluent in the depolymerization process, dicyclopentadiene and diluent at a ratio of 0.5 to 5 into the depolymerization distillation column; under normal pressure, the depolymerization temperature of 160 ℃ ~ 200 ℃, reflux ratio is 0.5 ~ 5, depolymerization time is 1h ~ 3h. High purity cyclopentadiene (CPD) was obtained on the top of the column. Cyclopentadiene was further passed through a tube reactor at a temperature of 40-120 ° C., a reaction pressure of (0.1-1.5) MPa and a residence time of 4 h- 10h, the final purity