This study aims to investigate the behavior characteristics of solid particles within conical spouted beds depending on the inlet gas velocity. Electrical capacitance volume tomography was applied to the measurements of the instantaneous gas-solid flow structures in a conical spouted bed. The effects of inlet gas velocity on the solid volume fraction and pressure were investigated. The different inlet gas velocities showed a certain influence on the gas?solid flow behaviors in the conical spouted bed. A symmetric core-annulus structure in the conical spouted bed was observed. Solid particles in the core and annulus areas were mixed at the ratio U/Ums = 1.6. It would be efficient to operate a fast pyrolysis reactor for the high heat and mass transfer of waste woods and sand particles.

• 박훈채(연세대학교 환경공학과) | Hoon Chae Park (Department of Environmental Engineering, Yonsei University)
• 이병규(연세대학교 환경공학과) | Byeong Kyu Lee (Department of Environmental Engineering, Yonsei University)
• 최항석(연세대학교 환경공학과) | Hang Seok Choi (Department of Environmental Engineering, Yonsei University) Corresponding author