Petroleum coke (petcoke) is a byproduct of the oil refining process. As refineries worldwide seek to operate more efficiently and extract more gasoline and other high value fuels from each barrel of crude oil, a solid carbon material known as petcoke is produced.
The physical and chemical characteristics of petcoke are a function of the crude oil and refining technology used by the refinery. Physically, petcoke can be hard or relatively soft. It can resemble large sponges with numerous pores, or it can resemble small spheres, ranging in size from a grain of sand to a large marble. Chemically, petcoke can include a variety of elements and metals in a wide range of concentrations. Depending on these physical and chemical characteristics, petcoke is typically used either in an energy application as a source of British Thermal Units (BTUs), or in an industrial application as a source of carbon.
Fuel grade petcoke represents roughly 80 percent of worldwide petcoke production. Fuel grade petcoke is typically very high in heating value (BTUs per pound), produces virtually no ash when burned, and is most commonly used in electric power plants and cement kilns.
As a carbon source, petroleum coke is used to manufacture:
Sulfur is a major by-product of oil refining and gas processing.
Processing of high-sulfur natural gas is also a large source of sulfur supply.
Also known as: Liquefied petroleum gas, commercial propane
LPG refers to the lightest (lowest density) liquid fuels produced by a refinery, primarily C3s (propane) and some C4s (butane). As a product, it typically refers to commercial propane, which is primarily propane with a small amount of butane.
The propane and butane blended into LPG can come from many different process units in the refinery, as well as from outside sources such as natural gas plants (from separating NGLs) or steam crackers (from C4 raffinates).
LPG (or commercial propane) typically contains ~90%+ propane and less than 10% butane.
What is Naphtha
Naphtha is a type of hydrocarbon mixture that is typically derived from the refining of crude oil or the distillation of coal tar. It is a highly flammable, colorless to light yellow liquid with a strong, pungent odor.
中国是石脑油的净进口国。 我国石脑油市场需求总量不断上升，国产石脑油供给不足，使得进口不断递增， 2021年我国石脑油进口达760.97万吨。