reply to post by OZtracized
distillation. This is what happens in an oil refinery -- crude oil is heated and the different chains are pulled out by their vaporization
The chains in the C5, C6 and C7 range are all very light, easily vaporized, clear liquids called naphthas. They are used as solvents -- dry cleaning
fluids can be made from these liquids, as well as paint solvents and other quick-drying products.
The chains from C7H16 through C11H24 are blended together and used for gasoline. All of them vaporize at temperatures below the boiling point of
water. That's why if you spill gasoline on the ground it evaporates very quickly.
Next is kerosene, in the C12 to C15 range, followed by diesel fuel and heavier fuel oils (like heating oil for houses).
Next come the lubricating oils. These oils no longer vaporize in any way at normal temperatures. For example, engine oil can run all day at 250
degrees F (121 degrees C) without vaporizing at all. Oils go from very light (like 3-in-1 oil) through various thicknesses of motor oil through very
thick gear oils and then semi-solid greases. Vasoline falls in there as well.
Chains above the C20 range form solids, starting with paraffin wax, then tar and finally asphaltic bitumen, which used to make asphalt roads.
its quite the dirty process...
petrochemical complexes make products from the refined oil product so the wouldn't have all the filtering needed to refine oil...
Primary petrochemicals are divided into three groups depending on their chemical structure:
Olefins: include ethylene, propylene, and butadiene. Ethylene and propylene are important sources of industrial chemicals and plastics products.
Butadiene is used in making synthetic rubber.
Aromatic Petrochemicals: include benzene, toluene, and xylenes. Benzene is used in the manufacture of dyes and synthetic detergents. Toluene is used
in making explosives. Manufacturers use xylenes in making plastics and synthetic fibres.
Synthesis gas: is a mixture of carbon monoxide and hydrogen, and is used to make the petrochemicals ammonia and methanol. Ammonia is used in making
fertilizers and explosives whereas methanol serves as a source for other chemicals.
completely different handling process and equipment