The influence of the reactor pressure on the hydrodynamics in a cocurrent gas-liquid trickle-bed reactor

Wammes, W.J.A. and Westerterp, K.R. (1990) The influence of the reactor pressure on the hydrodynamics in a cocurrent gas-liquid trickle-bed reactor. Chemical Engineering Science, 45 (8). pp. 2247-2254. ISSN 0009-2509

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Abstract:	The influence of the reactor pressure on the liquid hold-up in the trickle-flow regime and on the transition between trickle-flow and pulse-flow has been investigated in a trickle-flow column operating up to 6.0 MPa with water, and nitrogen or helium as the gas phase. The effect of the gas velocity and gas density on the hold-up has been explained by means of the modified Galileo number Ga ${1+ΔP/(ρlgL)}$ . At the transition between trickle- and pulse-flow the liquid hold-up is - for a given value of the superficial gas velocity - nearly the same at each gas density. Therefore, at elevated gas densities the transition occurs at higher liquid throughputs. From a comparison of the experiments with water-nitrogen and water-helium it has been concluded that at an equal gas density - for given values of vl and vg - the hydrodynamic behaviour is the same.
Item Type:	Article
Copyright:	© 1990 Elsevier
Research Group:	Industrial Polymerization Processes (IPP/HT)
Link to this item:	http://purl.utwente.nl/publications/72624
Official URL:	http://dx.doi.org/10.1016/0009-2509(90)80102-K
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