Abstract
The riser of conventional and stage circulating fluidized bed reactors were simulated using computational fluid dynamics. The objective was to examine the design parameter effects using a 23 statistical experimental design method. The results showed that number of reactor stages had the highest effect on the standard deviation of the solid volume fraction (SVF), the average SVF, and standard deviation of gas temperature in a horizontal direction. In addition, the reactor wall temperature had the highest effect on the average holding time of catalysts. Increasing the number of reactor stages could reduce the back‐mixing and increase the system turbulence. The average vertical and horizontal solid particle velocities in the reactor stage region were higher than in the other regions. At the reactor stage region, peaks in the gas temperature were observed. The advantages of a stage reactor were confirmed to be applied in all the operating condition cases, independent of the solid particle mass flux.
Publication details
- Authors: Phupanit, J., Soanuch, C., Korkerd, K., Piumsomboon, P., Chalermsinsuwan, B.
- Published in: (2019) Asia-Pacific Journal of Chemical Engineering, 14 (1), art. no. e2277.
- Year: 2019
- DOI: 10.1002/apj.2277