“In today’s world of ever tougher and more stringent fuel specs, all aspects of the process must be utilized to the fullest extent for the entire operating cycle. 100% catalyst utilization is critical. There are numerous external and internal factors that significantly affect unit performance. Internal factors that can affect catalyst utilization are catalyst type and quality, reactor internals efficiency, and catalyst loading and startup. This article will focus on catalyst loading and its effect on overall unit performance.” – HYDROCARBON ENGINEERING SEPTEMBER 2006