Does petroleum coke belong to grade J or K?

Petroleum coke belongs to Class J. According to relevant public information, Class J fuel refers to coal coke, coke, coal and its processed products, petroleum coke, asphalt, fuel oil, gas and other fuels, while Class K fuel refers to waste fuel, including medical waste, industrial waste and municipal solid waste. Petroleum coke in class J fuel refers to the by-product produced by refinery heating and cracking heavy crude oil. Its main component is carbon, which has the characteristics of high calorific value, low ash content and low sulfur.