Petroleum coke (petcoke) is produced by deep recovery oil refineries using delayed coking technology. It is a high energy fuel priced below coal, making it very attractive to energy intensive industries, like cement, power, glass, and steel. Circulating fluidized bed technology has enabled petcoke’s growing use in power and steam production since it can cleanly and reliably extract the heat energy from petcoke despite its low volatility, high metal and sulfur levels.