Sponge coke

Is produced in a delayed Coker where residuum such as atmospheric reduced crude or vacuum residue is rapidly heated in a furnace and confined in a reaction zone or coke drum under specific operating temperature and coked drum pressure condition until the feed is converted into gas, oil stream and Petcoke.

The petcoke formed under normal process and typical residue feed has a sponge structure, hence the name Sponge Coke. Depending on the impurity level, typically metals and Sulfur contents Sponge Coke is used for fuel or other industrial processes.