Authors: Madhusudhan Kodam a; Ben J. Freireich a; Matthew T. Pretz b; Brien A. Stears b
a The Dow Chemical Company, Core R&D – Solids Processing, Building 1319, Midland, MI 48667, United States
b The Dow Chemical Company, Hydrocarbons R&D, B-251, Freeport, TX 77541, United States
Source: Powder Technology, Volume 316, 2017, Pages 190-197
Description: One of the locations in fluidized bed reactors where attrition is significant is the cyclones. One way to reduce the attrition in cyclones is to reduce the amount of catalyst going into the cyclones. This is achieved by separating the catalyst particles from the combined gas solid flow before the stream enters the cyclones. Using a riser flow along with a riser terminator, some of the catalyst particles can be separated from gas stream. In this work, we will discuss how Barracuda Virtual Reactor® has been used to investigate two riser termination devices for separating catalyst particles from gas phase. The two types of riser terminators simulated are (1) flat disk and (2) slots-elbow. The results indicate that the slots-elbow type terminator has an overall separation efficiency of more than 95% whereas the disk terminator has approximately 80% efficiency.