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Recently, various internals for rotating packed beds (RPBs) have been developed. However, the technical maturity of these internals is still relatively low compared to packings for columns. In this work, a novel design is proposed for RPBs, consisting of a seal structure combined with a Zickzack packing. The seal structure around the packing was developed to avoid bypasses in the spaces between packing and inner rotor walls, comparable to wall wipers used for structured packings in columns. This design was applied to deaeration experiments using water and nitrogen as stripping gas at rotational speeds from 450 to 1800 rpm. Using sealings, the overall liquid-side volumetric mass-transfer coefficient could be increased by up to 50% compared to the unsealed packing. Furthermore, the Zickzack packing turned out to be more resistant than conventional packings to hydrodynamic effects that lead to the formation of a peaked mass-transfer maximum at a certain rotational speed.

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