从轻闪油中除去DCPD的研究

Study on Removing DCPD from Low-flash Oil

采用气相裂解 精馏工艺 ,从C9石油树脂副产物轻闪油中分离除去双环戊二烯 (DCPD) .制得的轻闪油产品符合溶剂使用要求 ,裂解产物环戊二烯 (CPD)纯度可以达到 98%以上 .研究工艺条件对CPD产率的影响 .结果表明 :反应温度 3 4 0℃ ,反应空时 2h ,轻闪油中DCPD裂解生成CPD的反应能达到化学平衡 ,CPD的产率可以达到 2 3 %以上 ,为其理论产率的 90 % .

Cyclopentadiene dimer (DCPD) can be removed from low\|flash oil by the method of gas phase cracking\|distillation. The low\|flash oil removed DCPD can be used as solvent. The purification of the cracking product CPD can arrive to 98 %. The experiment results indicated that when cracking reaction temperature is 340 ℃ and space time is 2 h, the Chemical equilibrium of DCPD cracking into CPD can be achived. The yield of CPD can arrive to more than 86 percernt.