反应详情

The fraction (C-1) is fed to the fourth distillation column, and rectified at a column top pressure of 0.08 atmosphere, a column bottom pressure of 0.09 atmosphere, and a reflux ratio of 30. A fraction containing components having a boiling point lower than that of 5-vinyl-2-norbornene is obtained from the column top, and a fraction containing 5-vinyl-2-norbornene, dicyclopentadiene and tetrahydroindene is obtained from the column bottom. Further, the fraction from the column bottom is fed to the fifth distillation column (distillation "d1 "), and rectified at a column top pressure of 0.03 atmosphere, a column bottom pressure of 0.06 atmosphere, and a reflux ratio of 4.6. Component (D-1) composed mainly of 5-vinyl-2-norbornene is obtained from the column top, and component (D-2) composed mainly of dicyclopentadiene is obtained from the column bottom. The fraction (D-2) is recycled to the decomposition reactor.

1. distillationThe fraction (C-1) is fed to the fourth distillation column
2. additionA fraction containing components
3. customis obtained from the column top