Abstract: The delayed coker is an important processing method for heavy and inferior residuum in refineries. In 2018, the total supply of petroleum coke in the world was 130 Mt, of which the petroleum coke with sulfur content greater than 3% accounted for 67.84% of the total production. Petroleum coke is widely used in cement, electrolytic aluminum, steel, glass, power plant and chemical industry. In 2018, the consumption of petroleum coke in the global cement industry was 39.2551 Mt, accounting for 30.09% of the total supply of petroleum coke. Cement enterprises in Europe, Japan, South Korea, India and other regions used petroleum coke in large quantities. Petroleum coke is widely used in electrolytic aluminum industry in China, reaching 18.3819 Mt in 2018, but only 0.4390 Mt in cement industry. When petroleum coke is used in cement production, most of its sulfur can be fixed in cement clinker in form of sulfate. In foreign countries, high sulfur petroleum coke can be used safely and environmentally as the fuel for cement kiln calcination to meet the local emission requirements. Through long-term cooperative pricing mechanism, cement enterprises can purchase petroleum coke with stable cost performance advantage, which improves the initiative of cement enterprises to utilize petroleum coke. By improving the performance price ratio, expanding the sales channels in cement industry and increasing the export intensity, the application scope of high sulfur petroleum coke can be widened, and the outlet problem of high sulfur petroleum coke in China can be solved under the premise of meeting the environmental protection regulations.

Key words: delayed coking, petroleum coke, high sulfur, cement, aluminum electrolysis