Fuel oil regards oil refining process as last kinds of medium breed, product quality control is having stronger specific characteristics. Final fuel oily product is formed get of a lot of elements such as deepness of craft of crude oil breed, treatment, treatment restrict. According to different level, fuel oil can undertake classified:
1, whether is commodity formed when the basis leaves factory, fuel oil can be divided for commodity fuel oil and oil of fuel of for private use. Commodity fuel oil points to in leave factory the fuel that link forms commodity is oily; The raw material that oil of fuel of for private use points to to with Yu Lian the factory is produced or fuel and not was in leave factory the fuel that link forms commodity is oily.
2, the basis machines technological process, fuel oil can be divided to often press heavy oil, decompression heavy oil, catalysis heavy oil is mixed mixture heavy oil. Constant ballast oil shows refine factory often presses the heavy oil that device fractional distillation gives; Decompression heavy oil points to the heavy oil that fractional distillation of device of refine factory decompression gives; The heavy oil that catalytic heavy oil points to to fractional distillation of device of refine factory catalysis, cracking goes out (common weighs oily oar) ; Mixture heavy oil points to those who decrease ballast oil and catalytic heavy oil to mix commonly.
3, according to utility, fuel oil can be divided for marine fuel oil and furnace use fuel oil (heavy oil) reach other fuel oil.