The industrial dipentene was distilled by two fractionation columns with different theoretical plate numbers in vacuum condition and optimum conditions of fractional distillation have been found.

• 将工业双戊烯先进行初步蒸馏,然后再利用两个不同理论塔板数的精馏塔对工业双戊烯进行减压精馏,并找到各自的适宜精馏条件,分析对比两个精馏塔的分离效果。