In-line measurement of residence time distribution in a co-rotating twin-screw extruder

Abstract The residence time distribution in an intermeshing, co-rotating twin-screw extruder was measured in-line and off-line by stimulus–response technique. FD&C Red 40 was used as the tracer for the study. The die concentration was monitored in-line using a fiber-optic- equipped vis-near Infrared spectrometer while the color concentration in the off-line samples was measured using a charge coupled device (CCD) spectrometer. The in-line results correlated well with the off-line method. The effect of feed rate, water content and temperature on the residence time distribution were precisely determined and fit by the tanks in series (TIS) model.

[1]  A. Torres,et al.  Residence time distribution studies in continuous thermal processing of liquid foods: a review , 1998 .

[2]  L. Janssen,et al.  Twin screw extrusion , 1978 .

[3]  Modelling extrusion cooking , 2001 .

[4]  T. Jager,et al.  Residence time distribution in kneading extruders , 1995 .

[5]  Akhilesh Gautam,et al.  On-line Measurement of Residence Time Distribution in a Food Extruder , 1998 .

[6]  R. Altomare,et al.  An Analysis of Residence Time Distribution Patterns in A Twin Screw Cooking Extruder , 1986, Biotechnology progress.

[7]  Performance evaluation of acid casein neutralization process by twin-screw extrusion. , 1995 .

[8]  Mark J. Willis,et al.  Modeling and control of a food extrusion process , 1997 .

[9]  E. Berghofer,et al.  Kinetics of colour changes during extrusion cooking of maize grits , 1999 .

[10]  D. Todd.  Residence time distribution in twin-screw extruders , 1975 .

[11]  An-I Yeh,et al.  Effects of screw speed and feed rate on residence time distribution and axial mixing of wheat flour in a twin-screw extruder , 1992 .

[12]  M. Taha,et al.  In-line Residence Time Distribution of dicarboxylic acid oligomers/dioxazoline chain extension by reactive extrusion , 1999 .

[13]  V. Davidson,et al.  Residence Time Distributions for Wheat Starch in a Single Screw Extruder , 1983 .

[14]  D. Bigio,et al.  On the Effect of Operating Parameters and Screw Configuration on Residence Time Distribution , 1998 .

[15]  Bradley A. Saville,et al.  Introduction to chemical reaction engineering and kinetics , 1998 .

[16]  K. McCarthy,et al.  Effect of Screw Configuration and Speed on RTD and Expansion of Rice Extrudate , 1996 .

[17]  H. D. Ruyck.  Modelling of the residence time distribution in a twin screw extruder , 1997 .

[18]  D. J. van Zuilichem,et al.  Mixing effects of constituting elements of mixing screws in single and twin screw extruders , 1997 .

[19]  M. A. Rao,et al.  Residence time distribution in a holding tube , 1992 .