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Performance characteristics of a tower fermenter with mechanical foam control
Author(s) -
Takesono Satoshi,
Yasukawa Masami,
Onodera Masayuki,
Izawa Kohji,
Yamagiwa Kazuaki,
Ohkawa Akira
Publication year - 1993
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280560117
Subject(s) - defoamer , foaming agent , materials science , bubble , polyurethane , composite material , mechanics , dispersant , physics , porosity , optics , dispersion (optics)
For a bubble column (BC) treating foaming liquids, the characteristics of a rotating‐disk mechanical foam‐breaker (MFRD) fitted to the BC were examined. The foaming behaviour of the BC and the foam‐breaking behaviour of the MFRD under various operating conditions were related to the changes in liquid hold‐up in the foam. The gas hold‐up in a mechanical foam‐control system (MFS) with the MFRD was confirmed to be greater than the gas hold‐up in a non‐foaming system (NS) including antifoam agent (AF). Comparison of the volumetric mass transfer coefficient between the MFS and the non‐foaming system, in terms of the specific power input, also demonstrated the superiority of mechanical foam control for oxygen transfer performance.