Configuration Optimization and Mass Transfer in a Dual-Impeller Bioreactor
作者： Liangzhu Zu , Hongbao Zhou , Shifang Yang , Xiangyang Li , Chao Yang
DOI: 10.1252/JCEJ.14WE018
关键词: Turbine 、 Impeller 、 Configuration optimization 、 Sparging 、 Agitator 、 Materials science 、 Chromatography 、 Mass transfer 、 Gas dispersion 、 Bioreactor 、 Analytical chemistry
摘要: The bioreactor configuration including a dual-impeller combination, spacing between the impellers, and diameter of ring sparger is optimized based on solid suspension (N-jsg) gas dispersion (N-f k(L)a) in this work. Then, performance are systematically studied. It found that smaller (D-s/T = 0.32) achieves better dispersion. A pitched-blade disc turbine down-pumping (PDTD) as bottom impeller lowest N-jsg value, has lower N-f value compared with PBTD (pitched blade down-pumping) TBHA (three-bladed helical agitator). Techmix 335 hydrofoil (TXD) an upper provides higher k(L)a values. TXD+PDTD more suitable for requirements bioreactor. decreases slightly increasing loading, which beneficial to good such bioleaching reactors loadings (>20 wt%).
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