Abstract：In order to improve the gas phase distribution in the annular feed airlift loop reactor, increase the gas holdup and enhance the mass transfer, perforated plate was set in the rising section of the reactor. Firstly, the cold model experiment showed that the perforated plate could significantly improve the gas holdup. Then, the computational fluid dynamics simulation was carried out to investigate the influence of the perforated plate on flow and mass transfer in the loop reactor, and the influence of the aperture ratio on the gas holdup and mass transfer coefficient at different superficial gas velocities were studied. The results showed that perforated plate could improve the uniformity of gas radial distribution, effectively break the bubble, reduce the bubble diameter, increase the overall gas holdup, and strengthen the gas-liquid mass transfer. The aperture ratio of perforated plate was optimized, and the optimal aperture ratio of porous plate in industrial scale airlift loop reactor was determined. The simulation results provide a basis for the scale-up design and optimization of the loop reactor.
FANG Guodong,ZHOU Xinggui,SHU Zhongming. Effect of Perforated Plate on Flow and Mass Transfer in Airlift Loop Reactor[J]. 化学反应工程与工艺, 2020, 36(5): 385-394.
