They are based on the general knowledge of hydrodynamics in this kind of vessels. Stirrer speed, aeration rate, gas hold-up, power input and reactor geometry were utilized to obtain model parameter values.
#Cade Simu V4.0 Download software#
Comparison between simulations and experiments shows that pulse-response curves and actual level of mixing time were predicted well. Cade Simu Cade Simu para Windows Grtis Em Portugus V 4.0 4.4 (8) Status de segurana Download grtispara Windows Anlise Softonic Software eletrotcnico gratuito Cade Simu um aplicativo de design gratuito desenvolvido para usurios que precisam de um software eletrotcnico fcil de usar. These trends were described qualitatively and quantitatively by the developed compartment model. The influence of aeration on mixing was minor: at first negative (reduced mechanical power input), then positive (increased power transfer from gas). A fluorescence pulse-response technique was employed to quantify mixing at different stirrer speeds and aeration rates in the regime of limited recirculation.
A compartment model to describe mixing in a gas-liquid/multiimpeller system was developed and verified on a 30m3 large scale fermenter equipped with four Rushton turbines. Therefore, prediction of mixing is of major importance for reactor design and process scale-up.
These phenomena occur in large scale fermentations as a consequence of imperfect mixing. ABSTRACT Bioprocesses are operations especially sensitive to local concentration gradients of substrate or pH.