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Department of Biochemical and Chemical Engineering

August 2021

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  • Picture of the Month
The image shows the principle of a spinning band distillation column. © AD​/​BCI

August 2021 – Additive manufacturing for Spinning Band Distillation segments

Distillation is one of the most frequently used separation steps in process engineering.

A modular continuously operated spinning band distillation column for small product amounts was developed and characterized regarding operating window and separation efficiency. More information can be found under March 2018 – “Lab-scaled continuous operated spinning band column”. The column can be used either for first product amounts within a small-scale production or as feasibility studies for distillation in a scale-up context with small amounts of resources, energy and time. With additive manufacturing, a special internal segment fabricated allowing for feed input at the top of the spinning band. The feed stream is guided through the central bore and can be fed at a variable position. A simple exchange of the outlet segment can change the feed point adjusted to changing inlet concentrations.

L. Bittorf, N. Böttger, D. Neumann, A. Winter, N. Kockmann, Characterization of an automated spinning band column as a module for laboratory distillation, Chem. Eng. & Technol., accepted paper, July 2021. https://doi.org/10.1002/ceat.202000602