ISSN:
0178-515X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Abstract The behaviour of dispersed gas in large aerated stirred tank reactors is modelled by means of a Markov-process, which distinguishes between small recirculation bubbles with “stagnant gas” content, large rising bubbles with “active gas” content and exchange of stagnant and active gas contents,the “gas exchange” region at the impeller. The measurementsof the gas residence time distributions (RTDs) in an 1.5 m3 aerated stirred tank reactor with water and Penicillium chrysogenum cultivation medium are interpreted by this model. List of symbols CPR CO2 production rate OTR oxygen transfer rate PRS pseudo random signal RTD residence time distribution V gas volume α recirculation coefficient τ mean gas residence time Indices act active gas ex gas exchange stagn stagnant gas tot total gas
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00518736
