... Waste oils: Waste engine oil, waste lube oil, gear oil, falling petroleum, petroleum residue, oil sludge, anthracene oil, naphthalene oil 3. The advantages of ... (7). Feeding raw material, discharging residues and producing oil continuously. In the high-temperature, it can feed raw ... materials, discharge residues and produce oil continuously. The oil fume will not return from the reactor. The ...