a waste plastic to fuel oil distillation vessel is disclosed . the distillation vessel can be a revolving cone with many traverse supporting tubes therein . this structure allows high temperature air or gas to go through the support tubes , which pass through the vessel , to increase the heating area and increase the temperature of the distillation vessel . also disclosed is a discharging system for discharging residue from inside of the vessel and a method of converting waste plastic or rubber into fuel oil .