... pretreatment,waste oil pumped into the distillationKettle,heati to working temperature,can get the base oil ,gasoline ... coal,gas or fuel oil to make the oil in the kettle up to the working temperature.this system ... diesel.Recovery rateBase oil:85%~87%(index similar to SN150~SN200)Gasoline :about 3%diesel:about 3 ... all sealed,won’t release any gas harmful to human and environment,the colloid and asphalting, ...