Complex mixing device for dispersion of gases in liquid

Details Complex mixing device for dispersion of gases in liquid Complex mixing device for dispersion of gases in liquid

1994-04-28

1995-07-11

Miles, Tim

Gas and liquid contact apparatus

Contact devices

Rotating

261 87, B01F 304

Patent

active

054318602

ABSTRACT:
A mixing device, especially for a fermenter, capable of dispersing gas in a broth therein, in which a number of propeller mixers are provided on a vertically extending shaft. The lower propeller mixer is a gas dispersing mixer having a hollow hub and open channels on the blades extending from this hub and tapering outwardly. At least one intermediate propeller mixer has some blades shorter than others and of reverse flow direction, some blades having baffle bars on trail edges thereof. The upper propeller mixer has the longer blades without channels and flow modifying elements.

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R. Steel et al; Biotechnology and Bioengineering; vol. IV; "Some Effects of Turbine Size on Novobiocin Fermentations".

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