Liquid hold-up; Catalytic structured packing; Katapak-SP; X-ray tomography; Flow distribution
Abstract :
[en] This paper presents the results of a study carried out to examine liquid hold-up and flow distribution in a 0.1m internal diameter column filled with catalytic structured packing Katapak-SP.
Information has been gathered at local scale by means of a non-intrusive high energy X-ray
tomograph. Measurements have been carried out in a large number of packing cross sections
situated at different heights between the top and bottom of the packed column, giving access to the evolution of axial profiles of liquid hold-up in the open channels (separation zone) and in the
catalytic baskets (reaction zone) as a function of the liquid load. The total hold-up, evaluated by
averaging local tomographic values over the packed volume, was compared with global hold-up
data obtained by traditional methods, like draining and RTD measurements.
A method was also proposed to deduce the distribution of liquid flowrate, between the reaction and the separation zones, from hold-up distribution measured by tomography. The methodology was validated by comparison with experimental data obtained by collecting separately the liquid flowing out of the two zones at the bottom of the packed bed. The obtained results are invaluable to improve the description of hydrodynamics in rate based performance models.
Disciplines :
Chemical engineering
Author, co-author :
Viva, Aurora; Université de Liège - ULiège > Département de Chimie appliquée > Laboratoire de Génie chimique
Aferka, Saïd ; Université de Liège - ULiège > Département de chimie appliquée > Département de chimie appliquée
Toye, Dominique ; Université de Liège - ULiège > Département de chimie appliquée > Génie de la réaction et des réacteurs chimiques
Marchot, Pierre ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Systèmes polyphasiques
Crine, Michel ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires
Brunazzi, Elisabetta; University of Pisa > Department of Chemical Engineering (DICCISM)
Language :
English
Title :
Determination of liquid hold-up and flow distribution inside modular catalytic structured packings
Publication date :
2011
Journal title :
Chemical Engineering Research and Design
ISSN :
0263-8762
eISSN :
1744-3563
Publisher :
Institution of Chemical Engineers
Volume :
89
Pages :
1414-1426
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Action de Recherche Concertée : Advanced Experimental Techniques and Cellular Automaton Modelling of Multiphase Systems - Application to distillation and reactive distillation columns
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Aferka, S., 2010. Hydrodynamic study of a reactive distillation column: measurement of the phases distribution using X-ray tomography (in French), Ph.D. thesis, University of Liege.
Aferka S., Crine M., Saroha A.K., Toye D., Marchot P. In situ measurements of the static liquid hold-up in Katapak-SP 12 packed column using X-ray tomography. Chem. Eng. Sci. 2007, 62:6076-6080.
Aferka S., Viva A., Brunazzi E., Marchot P., Crine M., Toye D. Liquid load determination in a reactive distillation packing by X-ray tomography. Can. J. Chem. Eng. 2010, 88:611-617.
Aferka S., Viva A., Brunazzi E., Marchot P., Crine M., Toye D. Tomographic measurement of liquid hold up and gas-liquid interfacial area distributions in a column packed with MellapakPlus 752.Y. Chem. Eng. Sci. 2011, 10.1016/j.ces.2011.01.022.
Behrens M., Olujić Ž., Jansens P.J. Combining reaction with distillation. Hydrodynamic and mass transfer performance of modular catalytic structured packings. Chem. Eng. Res. Des. 2006, 84:381-389.
Behrens M., Olujić Ž., Jansens P.J. Liquid flow behavior in catalyst containing pockets of modular catalytic structured packing Katapak-SP. Ind. Eng. Chem. Res. 2007, 46:3884-3890.
Behrens M., Olujić Ž., Jansens P.J. Liquid hold-up in catalyst-containing pockets of a modular catalytic structured packing. Chem. Eng. Technol. 2008, 31:1637-1639.
Benkrid K., Rode S., Midoux N. Prediction of pressure drop and liquid saturation in trickle-bed reactors operated in high interaction regimes. Chem. Eng. Sci. 1997, 52:4021-4032.
Boyer C., Fanget B. Measurement of liquid flow distribution in trickle bed reactor of large diameter with a new gamma-ray tomographic system. Chem. Eng. Sci. 2002, 57:1079-1089.
Brunazzi E., Viva A. Experimental investigation of reactive distillation packing Katapak-SP 11: hydrodynamic aspects and size effects. IChemE Symp. Ser. No. 152 2006, vol. 11. pp. 554-562.
Götze L., Bailer O., Moritz P., von Scala C. Reactive distillation with Katapak. Catal. Today 2001, 69:201-208.
Gorak A., Jaroszynski M., Kolodziej A. Residence time distribution study for the catalytic packing Multipak. Chem. Pap. 2006, 60:404-409.
Green C., Faraone J., Briley J., Eldridge R., Ketcham R., Nightingale B. Novel application of X-ray computed tomography: determination of gas-liquid contact area and liquid hold-up in structured packing. Ind. Eng. Chem. Res. 2007, 46:5734-5753.
Hoffmann A., Noeres C., Gorak A. Scale-up of reactive distillation columns with catalytic packings. Chem. Eng. Proc. 2004, 43:383-395.
Marchot P., Toye D., Crine M., L'Homme G., Pelsser A.M., Olujić Z. Liquid distribution images on structured packing by X-ray computed tomography. AIChE J. 2001, 47:1471-1476.
Moritz P., Hasse H. Fluid dynamics in reactive distillation packing Katapak-S. Chem. Eng. Sci. 1999, 54:1367-1374.
Olujić Ž., Behrens M. Hold-up and pressure drop of packed beds containing a modular catalytic structured packing. Chem. Eng. Technol. 2006, 29:979-985.
Olujić Ž., Behrens M., Spiegel L. Experimental characterization and modelling of the performance of a large-specific-area high-capacity structured packing. Ind. Eng. Chem. Res. 2007, 46:883-893.
Olujić Ž., Jödecke M., Shilkin A., Schuch G., Kaibel B. Equipment improvement trends in distillation. Chem. Eng. Proc. 2009, 48:1089-1104.
Ratheesh S., Kannan A. Hold-up and pressure drop studies in structured packings with catalysts. Chem. Eng. J. 2004, 104:45-54.
Schmit C.E., Eldrige R.B. Investigation of X-ray imaging of vapor-liquid contactors. I. Studies involving stationary object and a simple flow system. Chem. Eng. Sci. 2004, 59:1255-1266.
Suess P., Spiegel L. Hold-up of Mellapak structured packings. Chem. Eng. Proc. 1992, 31:119-124.
Toye D., Marchot P., Crine M., Pelsser A.M., L'Homme G. Modelling of multiphase flow in packed beds by computer-assisted X-ray tomography. Meas. Sci. Technol. 1996, 7:436-443.
Toye D., Marchot P., Crine M., Pelsser A.M., L'Homme G. Local measurements of void fraction and liquid hold-up in packed columns using X-ray computed tomography. Chem. Eng. Proc. 1998, 37:511-520.
Toye D., Crine M., Marchot P. Imaging of liquid distribution in reactive distillation packings with a new high-energy X-ray tomograph. Meas. Sci. Technol. 2005, 16:2213-2220.
Urrutia G., Bonelli P., Cassanello M., Cukierman A. On dynamic liquid hold-up determination by the drainage method. Chem. Eng. Sci. 1996, 51:3721-3726.
Van Hasselt B.W., Calls H.P.A., Sie S.T., van den Bleek C.M. Liquid hold-up in the three-levels-of-porosity reactor. Chem. Eng. Sci. 1999, 54:1405-1411.
Viva A., Brunazzi E. Experimental analysis of the liquid hold-up contributions in catalytic packing Katapak-SP. Proceedings of the 6th European Congress of Chemical Engineering (ECCE-6) 2007, 1-10.
Viva A., Brunazzi E. The influence of modular structure on the hydrodynamics of catalytic structured packings for reactive separation processes. AIDIC Conference Series 2009, vol. 9. pp. 345-353. 10.3303/ACOS0909040.
Viva, A., 2008. Experimental analysis and modelling of novel catalytic structured packing for reactive separation processes, Ph.D. thesis, University of Pisa.
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.
