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Performance characteristics of mechanical foam-breakers with rotating parts fitted to bubble column

Performance characteristics of mechanical foam-breakers with rotating parts fitted to bubble column

Journal of Chemical Technology and Biotechnology 68(1): 94-100

The characteristics of four mechanical foam-breakers (a six-blade turbine (F-B), a six-blade vaned disk (V-D), a two-blade paddle (T-P) and a conical rotor (C-R) having six-blades fixed internally) with rotating parts fitted to a bubble column (BC) treating various foaming liquids were examined. In the BC with different foam-breakers, the average liquid hold-up in foam, vphi-L, was both a typical parameter reflecting the foaming intensity of the BC, and a parameter related to the difficulty or ease of foam-breaking. The value of power consumption, P-kc, for foam-breaking in the C-R was the largest amongst the foam-breakers. Furthermore, it was demonstrated that in the four foam-breakers with rotating parts a considerable amount of very small liquid droplets was entrained with the exhaust air.

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Accession: 009171275

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DOI: 10.1002/(sici)1097-4660(199701)68:1<94::aid-jctb600>3.0.co;2-m

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