Excess FCC flue gas from fluid catalytic crackers can be utilized in various ways, primarily depending on its composition. Common applications include using it as a fuel source for energy generation or as a feedstock for chemical processes. Some facilities may capture and process the flue gas to recover valuable components, such as sulfur or carbon dioxide. Additionally, advancements in technology allow for the conversion of flue gas into useful products, enhancing overall efficiency and sustainability. Proper management and innovative solutions can significantly reduce emissions and improve operational performance.