ABSTRACT
Pet coke is a by-product produced during heavy/ residual oil’s delayed coking process. Its main component is the element C, accounting for more than 80 wt%. The rest of the elements are H, O, N, and metallic elements. It has characters such as high heat value, high carbon content, low ash content, low volatile matter, etc. With respect to the sulfur content existing in the pet coke, content more than 3% is called high sulfur pet coke (Zhu 2012). High sulfur pet coke is normally used as fuel, and therefore, it is also called fuel grade pet coke (Miao et al. 2014). However, due to the large amount of pollutant emission, such as SOx and NOx, the large-scale use of high sulfur pet coke is limited. The ideal way to use high sulfur pet coke should consider both efficiency and cleanliness. IGCC power generation technology and CFB power generation technology are both considered to be good options to use high sulfur pet coke (Ding 2014, Xu et al. 2011, Wang & Leng 2009). When compared with IGCC technology, CFB power generation technology has advantages such as high combustion efficiency, high availability, large load adjustment range, and less corrosion to equipment and nature. There are already some commercial pet coke-fired CFB plants operating in the world.
