Static holdup in Gas - Flowing solids - Fixed bed contactors
Abstract
Static holdup was investigated experimentally and theoretically in gas - flowing solids - fixed bed bench-scale contactors. Diverse packing elements were used: Raschig rings, ceramic beads, crushed stone and glass beads. Four different flowing solids particles were examined: sand. propant, alumina and glass. A wide range of solid fluxes and gas velocities were used in this study. The experimental results showed a significant influence of the geometry of the packing elements oil static holdup. The physical properties of the flowing solids also influenced static holdup. A moderate influence of solids flux and a minor influence of gas velocity were observed. An empirical correlation for the prediction of static holdup was developed from theoretical and numerical analyses, based on the available experimental data. This simple equation well predicts static holdup and it contains one parameter that has to be measured in the desirable system - dynamic holdup. Alternatively. dynamic holdup can... be predicted by previously proposed models. One of those models was integrated into the proposed correlation for static holdup, which gave quite good results.
Keywords:
Gas - flowing solids - fixed bed contactors / Multiphase flows / Static holdup / Dynamic holdup / Empirical correlationSource:
Powder Technology, 2009, 191, 1-2, 122-129Publisher:
- Elsevier Science Bv, Amsterdam
Funding / projects:
- Istraživanje fenomena prenosa značajnih za razvoj višefaznih procesa i opreme (RS-142014)
- Modelovanje hemijskih i separacionih procesa i uređaja (RS-142045)
DOI: 10.1016/j.powtec.2008.09.011
ISSN: 0032-5910
WoS: 000264656900019
Scopus: 2-s2.0-60549090049
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Nikačević, Nikola AU - Predojević, Zlatica J. AU - Petrović, Dragan Lj. AU - Duduković, Aleksandar PY - 2009 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1503 AB - Static holdup was investigated experimentally and theoretically in gas - flowing solids - fixed bed bench-scale contactors. Diverse packing elements were used: Raschig rings, ceramic beads, crushed stone and glass beads. Four different flowing solids particles were examined: sand. propant, alumina and glass. A wide range of solid fluxes and gas velocities were used in this study. The experimental results showed a significant influence of the geometry of the packing elements oil static holdup. The physical properties of the flowing solids also influenced static holdup. A moderate influence of solids flux and a minor influence of gas velocity were observed. An empirical correlation for the prediction of static holdup was developed from theoretical and numerical analyses, based on the available experimental data. This simple equation well predicts static holdup and it contains one parameter that has to be measured in the desirable system - dynamic holdup. Alternatively. dynamic holdup can be predicted by previously proposed models. One of those models was integrated into the proposed correlation for static holdup, which gave quite good results. PB - Elsevier Science Bv, Amsterdam T2 - Powder Technology T1 - Static holdup in Gas - Flowing solids - Fixed bed contactors EP - 129 IS - 1-2 SP - 122 VL - 191 DO - 10.1016/j.powtec.2008.09.011 ER -
@article{ author = "Nikačević, Nikola and Predojević, Zlatica J. and Petrović, Dragan Lj. and Duduković, Aleksandar", year = "2009", abstract = "Static holdup was investigated experimentally and theoretically in gas - flowing solids - fixed bed bench-scale contactors. Diverse packing elements were used: Raschig rings, ceramic beads, crushed stone and glass beads. Four different flowing solids particles were examined: sand. propant, alumina and glass. A wide range of solid fluxes and gas velocities were used in this study. The experimental results showed a significant influence of the geometry of the packing elements oil static holdup. The physical properties of the flowing solids also influenced static holdup. A moderate influence of solids flux and a minor influence of gas velocity were observed. An empirical correlation for the prediction of static holdup was developed from theoretical and numerical analyses, based on the available experimental data. This simple equation well predicts static holdup and it contains one parameter that has to be measured in the desirable system - dynamic holdup. Alternatively. dynamic holdup can be predicted by previously proposed models. One of those models was integrated into the proposed correlation for static holdup, which gave quite good results.", publisher = "Elsevier Science Bv, Amsterdam", journal = "Powder Technology", title = "Static holdup in Gas - Flowing solids - Fixed bed contactors", pages = "129-122", number = "1-2", volume = "191", doi = "10.1016/j.powtec.2008.09.011" }
Nikačević, N., Predojević, Z. J., Petrović, D. Lj.,& Duduković, A.. (2009). Static holdup in Gas - Flowing solids - Fixed bed contactors. in Powder Technology Elsevier Science Bv, Amsterdam., 191(1-2), 122-129. https://doi.org/10.1016/j.powtec.2008.09.011
Nikačević N, Predojević ZJ, Petrović DL, Duduković A. Static holdup in Gas - Flowing solids - Fixed bed contactors. in Powder Technology. 2009;191(1-2):122-129. doi:10.1016/j.powtec.2008.09.011 .
Nikačević, Nikola, Predojević, Zlatica J., Petrović, Dragan Lj., Duduković, Aleksandar, "Static holdup in Gas - Flowing solids - Fixed bed contactors" in Powder Technology, 191, no. 1-2 (2009):122-129, https://doi.org/10.1016/j.powtec.2008.09.011 . .