Estimation of mass transfer parameters in a Taylor-Couette-Poiseuille heterogeneous reactor
AUTOR(ES)
Resende, M. M., Vieira, P. G., Sousa Jr, R., Giordano, R. L. C., Giordano, R. C.
FONTE
Brazilian Journal of Chemical Engineering
DATA DE PUBLICAÇÃO
2004-06
RESUMO
A bench-scale, continuous vortex flow reactor (VFR), with a radius ratio, h, equal to 0.48 and an aspect ratio, G, equal to 11.19 was studied. This reactor may be used in the enzymatic hydrolysis of polypeptides obtained from sweet cheese whey with enzymes immobilized on agarose gel. Operational conditions were 2410 < Re q < 11793 and 30-min residence time for glycerol-water, 14% w/w, 27ºC (Re ax = 1.1) and for water, 38ºC (Re ax = 1.5). Residence time distributions (RTDs) were obtained after pulse injections of different tracers (including dyed solid particles). Mass transfer coefficients of a lumped-parameter model of the reactor were estimated from these data. Model fitting to experimental data was accurate. Working conditions were selected so that transport properties of the fluids would be similar to the ones in the actual process at the final stages of whey hydrolysis.
Documentos Relacionados
- TAYLOR-COUETTE INSTABILITY IN VISCOPLASTIC FLUID FLOW
- Mass transfer in porous media with heterogeneous chemical reaction
- Experimental analysis and evaluation of the mass transfer process in a trickle-bed reactor
- Oxygen mass transfer for an immobilised biofilm of Phanerochaete chrysosporium in a membrane gradostat reactor
- Hydrodynamics Characteristics and Gas-Liquid Mass Transfer in a Three Phase Fluidized Bed Reactor