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Department of Biochemical and Chemical Engineering

February 2020

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  • Picture of the Month
The image shows the design and hydrodynamic characterization of a draft tube baffle tank for Lab‐Scale. © AD​/​BCI

February 2020 - Design and Hydrodynamic Characterization of a Draft Tube Baffle Tank for Lab‐Scale

For process development on lab‐scale, it is necessary to have equipment that represents the industrial apparatuses as similar as possible to offer short time‐to‐market. Accordingly, a draft tube baffle (DTB) crystallizer was scaled down from typical m3‐scale to 1 L filling volume and manufactured by the glass blowing workshop of TU Dortmund University. The suspension characteristics were determined for fluidized crystals in saturated solution. For further characterization of the DTB tank, the residence time of the liquid and solid phases were experimentally determined for the continuous operation mode. Additionally, the classifying behavior of the particles in the DTB was investigated. A draft tube baffle tank was developed for lab‐scale operation. The hydrodynamic behavior was investigated by analyzing the residence time distribution of the liquid and solid phase as well as the suspension and classification behavior.

Corresponding publication: M. Schmalenberg, A.-K. Nocon, N. Kockmann, Chemie Ingenieur Technik, Design and Hydrodynamic Characterization of a Draft Tube Baffle Tank for Lab‐Scale, 2020, doi.org/10.1002/cite.201900078