Definition of petroleum products
Petroleum products are a general term for various commodities directly produced from petroleum or petroleum as a raw material.
Petroleum products can be divided into: petroleum fuels, petroleum solvents and chemical raw materials, lubricants, paraffin, petroleum asphalt, petroleum coke and other six categories. The petroleum industry has always focused on the production of fuel oil for gasoline, kerosene and industrial boilers. In the 1920s and 1930s, more advanced refining techniques emerged, most of which were invented by the Frenchman Hendley (catalytic cracking). The so-called catalytic cracking is the use of heat, pressure and catalyst to crack heavy oil into lighter oils, mainly gasoline. Another method of refining is the polymerization method, which is the opposite of the cracking method: synthesizing small molecules into large molecules, and polymerizing the lighter gas obtained by the refining into gasoline and other liquids.