Also known as: coke, refinery coke, petroleum coke
In an FCC, coke forms on the catalyst and is burned off as fuel for the FCC process, resulting in no net production of coke as a product.
In a delayed coker, resid is thermally cracked to produce lighter, more desirable products. In the process, a significant portion of the feed (~15% of volume) is converted into elemental carbon called petroleum coke. Refiners separate the coke from the other coker products and sell it as a product.
The primary end use for pet coke is as a solid fuel, used as a substitute for coal in furnaces and boilers. The value of the coke as a product is typically far below the cost of the crude oil used to produce it.
FIND OUT MORE
The Refinery Reference Desk includes content derived from our industry experts as well as from public data sources such as company websites. Nothing herein is intended to serve as investment advice. This material is based on information that we believe to be reliable and adequately comprehensive, but we do not represent that such information is in all respects accurate or complete. McKinsey Energy Insights does not accept any liability for any losses resulting from use of the content.