Some knowledge about petroleum coke

Some knowledge about petroleum coke

      Petroleum coke is a product that is converted from crude oil by distillation to separate light and heavy oil, and then thermal cracking the heavy oil. From the appearance, coke is irregular in shape and black blocks (or particles) of varying sizes with a metallic luster. The particles of coke have a porous structure and the main element is carbon.

      Petroleum coke has its own unique physical, chemical and mechanical properties. The non-volatile carbon in the heat-generating part, volatiles and mineral impurities (sulfur, metal compounds, water, ash, etc.) determine the chemical properties of coke. The porosity and density in the physical properties determine the reactivity and thermophysical properties of coke. The particle composition, processing method, hardness, wear resistance, strength and other mechanical properties determine its mechanical properties.

      The indicators of the physical and chemical properties of petroleum coke include ash content, sulfur content, volatile matter, true density, porosity, resistivity, thermal expansion coefficient and mechanical properties.

      Petroleum coke can be used in graphite production, smelting and chemical industries depending on its quality.

      Low-sulfur, high-quality cooked coke, such as needle coke, is mainly used to manufacture ultra-high power graphite electrodes and certain special carbon products; in the steelmaking industry, needle coke is an important material for developing new technologies for electric furnace steelmaking.

      Medium-sulfur, ordinary cooked coke is used in large quantities for aluminum smelting.

      High-sulfur, ordinary raw coke is used in chemical production, such as the manufacture of calcium carbide, silicon carbide, etc., and is also used as a fuel for metal casting, etc.