液相连续制备挂式四氢双环戊二烯

Liquid-phase Continuous-flow Preparation of High Energy Fuel Exo-THDCPD

挂式四氢双环戊二烯(exo-THDCPD)是重要的高密度液体烃类燃料。为提高exo-THDCPD的合成效率,研究了连续制备exo-THDCPD的新工艺,包括两个反应器(鼓泡式连续流加氢反应器和连续流异构化釜式反应器)的串联,即两个过程(Pd/C催化环戊二烯二聚体(DCPD)加氢制备桥式四氢双环戊二烯(endo-THDCPD)和Al Cl3催化endo-THDCPD异构合成exo-THDCPD)的串联。结果表明,液相连续制备exo-THDCPD的较佳工艺条件为:重时空速2.4 h-1,加氢压力0.1 MPa,氢气流速80 m L·min-1,DCPD浓度0.76 mol·L-1,加氢反应温度30℃,异构化反应温度70℃;DCPD转化率100%,exo-THDCPD收率92.5%。

Exo-tetrahydrodicyclopentadiene（ exo-THDCPD） is an important high density liquid hydrocarbon fuel. To improve the synthesis efficiency of exo-THDCPD,a new process of continuous preparation of exo-THDCPD,including the cascade of two reactors（ continuous-flow bubbling hydrogenation reactor and continuous-flow isomerization tank reactor）,namely the cascade of two processes（ dicyclopentadiene（ DCPD）was hydrogenated to endo-THDCPD over Pd / C catalyst and the endo-THDCPD was isomerized to exo-THDCPD over Al Cl3catalyst） was studied. The liquid-phase continuous-flow preparation of exo-THDCPD was realized. Results show that the optimum liquid-phase continuous-flow process conditions of preparing exo-THDCPD are determined as： weight hourly space velocity（ WHSV）,2. 4 h-1; hydrogenation pressure（ pH）,0. 1 MPa; H2 gas flow rate,80 m L·min-1; DCPD concentration（ CDCPD）,0. 76 mol·L-1; hydrogenation reaction temperature： 30℃; isomerization; reaction temperature,70 ℃; conversion of DCPD,100% and yield of exo-THDCPD,92. 5%.