What Is Petroleum Coke?
The vacuum residue of petroleum is pyrolyzed at 500-550 ° C through a coking unit to produce black solid coke. Its appearance is a black or dark gray honeycomb structure, and the pores in the focal block are mostly elliptical and penetrate each other. [1]
- Petroleum coke (PETroleum coke) is
- The indicators of physical and chemical properties of petroleum coke are
- Depending on its quality, petroleum coke is used in industries such as graphite making, smelting, and chemical industry. The largest user of petroleum coke in the world is the cement industry, which consumes about 40% of the petroleum coke market share; followed by the calcination of petroleum coke to produce prebaked anodes for aluminum smelting or graphite electrodes for steelmaking, with 22% of petroleum The coke is calcined. [4]
- Low-sulfur, high-quality cooked coke, such as needle coke, is mainly used to manufacture ultra-high power graphite electrodes and some special carbon products; needle coke is an important material for the development of new technologies for electric steelmaking in the steelmaking industry.
- Medium sulfur, ordinary cooked coke, a large amount is used for aluminum smelting.
- High sulfur and ordinary raw coke are used in chemical production, such as calcium carbide, silicon carbide, etc., and also used as fuel for metal casting.
- With the rapid development of China's cement, electrolytic silver, steel, and thermal power industries, the demand for low-sulfur petroleum coke has increased dramatically, and with the increasingly strict environmental protection policy, the use of high-sulfur petroleum coke has been greatly restricted. Therefore, in the future, China's petroleum coke market will face a situation of low-sulfur petroleum coke being tight and high-sulfur petroleum coke severely surplus. [5]
- Most of the petroleum coke produced in China is low-sulfur coke, which is mainly used for aluminum smelting and graphite production.
- Graphite electrode