Delicate balance in a tough environment: Refractory selection for fluid catalytic cracking units.

The article discusses refractory selection for fluid catalytic cracking units (FCCU) at oil refineries. FCCUs are crucial for refineries' operations as they are the sources of the bulk of their profits. Topics include the challenges in refractory selection, the importance of proper refractory selection in the FCCU to ensure the unit's overall reliability, and the required refractory properties in transfer line walls.