Measurement of local particle–fluid heat transfer coefficient in trickle-bed reactors

Marcandelli, C.; Wild, Gabriel; Lamine, A.S.; Bernard, J.R.

doi:10.1016/s0009-2509(99)00223-7

Cited by 21 publications

(5 citation statements)

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“…Small heat transfer probes (diameter approximately 2 mm) have been used to investigate particle-liquid heat transfer in Column 1 (Marcandelli et al, 1999). A schematic representation of the heat transfer probe is given in Figure 10.…”

Section: Heat Transfer Sensorsmentioning

confidence: 99%

Liquid Distribution in Trickle-Bed Reactor

Marcandelli¹,

Lamine

Bernard³

et al. 2000

Oil & Gas Science and Technology - Rev. IFP

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Section: Heat Transfer Sensorsmentioning

confidence: 99%

Liquid Distribution in Trickle-Bed Reactor

Marcandelli¹,

Lamine

Bernard³

et al. 2000

Oil & Gas Science and Technology - Rev. IFP

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“…Further, since they did not mention the axial position at which the data were obtained, it is difficult to fully interpret their results. Marcandelli et al attempted to measure the local heat-transfer coefficients in a packed bed only at one axial position. They found that the heat-transfer coefficient was again highest at the column center and wall, similar to the findings of Gabitto and Lemcoff …”

Section: Introductionmentioning

confidence: 99%

Investigation of Local Mass Transfer in a Packed Bed of Pall Rings Using a Limiting Current Technique

Gostick

Doan

Lohi

et al. 2003

Ind. Eng. Chem. Res.

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The mass-transfer coefficients at varied axial, radial, and angular positions in a packed bed of Pall rings were measured using the limiting current technique. The experimentation was carried out in a 0.30-m-diameter column with a bed height of 5.5 column diameters. Ferri-/ferrocyanide ions were used as the redox couple for the mass-transfer measurement. The local mass-transfer rate was found to be strongly dependent on the liquid feed distribution, especially at the top section of the packed bed. The local mass-transfer rate also varied significantly in the axial and radial directions in the packed bed. A maximum mass-transfer rate was observed at an axial distance of 1.5 column diameters (x/D ) 1.5) when the multipoint liquid distributor was used while the highest transfer rate occurred at x/D ) 2.5 for the single-point liquid distributor. However, for both types of liquid distributors the mass-transfer rate became steady at x/D > 4.5. The wall flow also reached steady-state x/D ) 3.5. The average mass-transfer rate with the multipoint distributor was about 14% higher than that with the single-point distributor.

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“…l ) angegeben und in Analogie zu k ls (siehe Abschn. "Stofftransport") für die einphasige Durchströmung von Schüttungen entsprechend (Boelhouwer et al 2001a;Huang et al 2004) und Thermistoren (NTC-Widerstand) (Marcandelli et al 1999;Borremans et al 2004).…”

Section: Wärmetransportunclassified

Reaktoren für Dreiphasen-Reaktionen: Rieselbettreaktoren

Schubert¹

2019

Handbuch Chemische Reaktoren

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Der Einfluss von betrieblichen Bedingungen, Katalysatoreigenschaften und Reaktorabmessungen auf das Verhalten von Rieselbettreaktoren für heterogenkatalysierte Gas-Flüssig-Reaktionen wird illustriert. Dabei liegt der Schwerpunkt auf der Beschreibung der komplexen Hydrodynamik und der Transportprozesse sowie deren Berücksichtigung bei der Reaktormodellierung. Zusätzlich werden Aspekte der Prozessentwicklung auf Basis von Laborexperimenten beleuchtet und Kriterien zur Bewertung der Abweichung vom idealen Rohrreaktor diskutiert. Zur Überwindung von Stofftransportlimitierungen werden Intensivierungskonzepte für Rieselbettreaktoren vorgestellt. Der Beitrag wurde in einer vorigen Version versehentlich vorab veröffentlicht und wurde korrigiert.

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Measurement of local particle–fluid heat transfer coefficient in trickle-bed reactors

Cited by 21 publications

References 0 publications

Liquid Distribution in Trickle-Bed Reactor

Liquid Distribution in Trickle-Bed Reactor

Investigation of Local Mass Transfer in a Packed Bed of Pall Rings Using a Limiting Current Technique

Reaktoren für Dreiphasen-Reaktionen: Rieselbettreaktoren

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