optiCAT Plus® is a major advance in hydrocarbon stripping. The process significantly reduces the amount of coke deposited during stripping, improving downstream regeneration. Reactive sulfur is also removed, improving temperature control and downstream belt regeneration. The process offers excellent heat transfer and temperature control. Afterwards, the moving belt provides a gentle heat soak to remove the remaining carbon and sulfur embedded deep within the catalyst or adsorbent pores. By minimizing the residence time in the fluidized bed and using it only where it's needed, particle attrition is minimized.


optiCAT Plus was specifically designed to handle oil-soaked catalyst, including catalyst unloaded using the CATnap process.



The benefits of the optiCAT Plus process are described in the December/January 1998/99 issue of Hydrocarbon Engineering and the Hart’s NPRA Q&A Show Special from October 8–10, 1997.


optiCAT Plus is currently installed in our Lafayette and Luxembourg plants

As of November 3, 2020 Porocel is part of Evonik.
  • Evonik successfully completes acquisition of Porocel
  • All Porocel's products and services will be integrated into the Evonik Catalysts portfolio
  • Porocel sales channels will remain in place for the time being

Evonik is one of the world leaders in specialty chemicals. The company is active in more than 100 countries around the world. Evonik goes far beyond chemistry to create innovative, profitable and sustainable solutions for customers. More than 32,000 employees work together for a common purpose: We want to improve life today and tomorrow.