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Article Dans Une Revue SSRN Electronic Journal Année : 2021

Quantitative Hydrodynamic Characterization of High Solid Anaerobic Digestion: Correlation of “Mixing-Fluidity-Energy” and Scale-Up Effect

Résumé

High solid anaerobic digestion (HSAD)’s complex rheological behavior exhibits short-circuiting and dead zone. Mixing optimization is potential to enhance HSAD hydrodynamics. Besides, scale-up effect is quite essential for HSAD’s applications, but remains rarely studied yet. Effect of impeller with different width on the correlation of “mixing-fluidity-energy” at different rotating speeds was first investigated at pilot-scale in present work. Then, scale-up effect based on rotating speed and a generalized Reynolds number was revealed from the aspects of fluidity and energy consumption. Results show that impeller width of 100 mm (10 rpm), 200 mm and 300 mm (5 and 10 rpm) are preferred for hydrodynamics and energy economics. Furthermore, Re similarity has better referential significance for the scale-up. In this study, new insight is gained into the correlation of “mixing-fluidity-energy” within a pilot-scale digester. Scale-up effect based Re similarity could potentially offer guidance for HSAD’s application in the practical engineering
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Dates et versions

hal-03376418 , version 1 (13-10-2021)

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Yuying Hu, Fengping Hu, Shihao Zhang, Xin Wang, Chuqiao Wang, et al.. Quantitative Hydrodynamic Characterization of High Solid Anaerobic Digestion: Correlation of “Mixing-Fluidity-Energy” and Scale-Up Effect. SSRN Electronic Journal, 2021, ⟨10.2139/ssrn.3928319⟩. ⟨hal-03376418⟩
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