Cfd analysis and flow model reduction for surfactant production in helix reactor
Article (Published version)
Metadata
Show full item recordAbstract
Flow pattern analysis in a spiral Helix reactor is conducted, for the application in commercial surfactant production. Step change response curves (SCR) were obtained from numerical tracer experiments by three-dimensional computational fluid dynamics (CFD) simulations. Non-reactive flow is simulated, though viscosity is treated as variable in the direction of flow, as it increases during the reaction. The design and operating parameters (reactor diameter, number of coils and inlet velocity) are varied in CFD simulations, in order to examine the effects on the flow pattern. Given that 30 simulations are not practical for fast computations needed for optimization, scale-up and control, CFD flow model is reduced to one-dimensional axial dispersion (AD) model with spatially variable dispersion coefficient. The dimensionless dispersion. coefficient (Pe) is estimated under different conditions and results are analyzed. Finally, a correlation relating the Pe number with the Reynolds number an...d number of coils from the reactor entrance is proposed for the particular reactor application and conditions.
Keywords:
CFD simulation / flow pattern analysis / axial dispersion model / process intensification / batch to continuousSource:
Chemical Industry & Chemical Engineering Quarterly, 2015, 21, 1, 35-44Publisher:
- Savez hemijskih inženjera, Beograd
DOI: 10.2298/CICEQ131010003N
ISSN: 1451-9372
WoS: 000354755400004
Scopus: 2-s2.0-84946178125
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Nikačević, Nikola AU - Thielen, L. AU - Twerda, A. AU - Van den Hof, P. M. J. PY - 2015 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2989 AB - Flow pattern analysis in a spiral Helix reactor is conducted, for the application in commercial surfactant production. Step change response curves (SCR) were obtained from numerical tracer experiments by three-dimensional computational fluid dynamics (CFD) simulations. Non-reactive flow is simulated, though viscosity is treated as variable in the direction of flow, as it increases during the reaction. The design and operating parameters (reactor diameter, number of coils and inlet velocity) are varied in CFD simulations, in order to examine the effects on the flow pattern. Given that 30 simulations are not practical for fast computations needed for optimization, scale-up and control, CFD flow model is reduced to one-dimensional axial dispersion (AD) model with spatially variable dispersion coefficient. The dimensionless dispersion. coefficient (Pe) is estimated under different conditions and results are analyzed. Finally, a correlation relating the Pe number with the Reynolds number and number of coils from the reactor entrance is proposed for the particular reactor application and conditions. PB - Savez hemijskih inženjera, Beograd T2 - Chemical Industry & Chemical Engineering Quarterly T1 - Cfd analysis and flow model reduction for surfactant production in helix reactor EP - 44 IS - 1 SP - 35 VL - 21 DO - 10.2298/CICEQ131010003N ER -
@article{ author = "Nikačević, Nikola and Thielen, L. and Twerda, A. and Van den Hof, P. M. J.", year = "2015", abstract = "Flow pattern analysis in a spiral Helix reactor is conducted, for the application in commercial surfactant production. Step change response curves (SCR) were obtained from numerical tracer experiments by three-dimensional computational fluid dynamics (CFD) simulations. Non-reactive flow is simulated, though viscosity is treated as variable in the direction of flow, as it increases during the reaction. The design and operating parameters (reactor diameter, number of coils and inlet velocity) are varied in CFD simulations, in order to examine the effects on the flow pattern. Given that 30 simulations are not practical for fast computations needed for optimization, scale-up and control, CFD flow model is reduced to one-dimensional axial dispersion (AD) model with spatially variable dispersion coefficient. The dimensionless dispersion. coefficient (Pe) is estimated under different conditions and results are analyzed. Finally, a correlation relating the Pe number with the Reynolds number and number of coils from the reactor entrance is proposed for the particular reactor application and conditions.", publisher = "Savez hemijskih inženjera, Beograd", journal = "Chemical Industry & Chemical Engineering Quarterly", title = "Cfd analysis and flow model reduction for surfactant production in helix reactor", pages = "44-35", number = "1", volume = "21", doi = "10.2298/CICEQ131010003N" }
Nikačević, N., Thielen, L., Twerda, A.,& Van den Hof, P. M. J.. (2015). Cfd analysis and flow model reduction for surfactant production in helix reactor. in Chemical Industry & Chemical Engineering Quarterly Savez hemijskih inženjera, Beograd., 21(1), 35-44. https://doi.org/10.2298/CICEQ131010003N
Nikačević N, Thielen L, Twerda A, Van den Hof PMJ. Cfd analysis and flow model reduction for surfactant production in helix reactor. in Chemical Industry & Chemical Engineering Quarterly. 2015;21(1):35-44. doi:10.2298/CICEQ131010003N .
Nikačević, Nikola, Thielen, L., Twerda, A., Van den Hof, P. M. J., "Cfd analysis and flow model reduction for surfactant production in helix reactor" in Chemical Industry & Chemical Engineering Quarterly, 21, no. 1 (2015):35-44, https://doi.org/10.2298/CICEQ131010003N . .