𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Flow Regime Transitions in an Internal-Loop Airlift Reactor

✍ Scribed by C.-C. Fu; L.-S. Fan; W.-T. Wu

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
507 KB
Volume
30
Category
Article
ISSN
0930-7516

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The flow regime transitions of the riser and downcomer in an internal‐loop airlift reactor are investigated. Analysis of the effects of mean value, standard deviation and chaotic time series on pressure fluctuation signals is recorded to determine the transition of the hydrodynamics in the riser and downcomer of the internal‐loop airlift reactor. Two major chaotic invariants, the correlation dimension and the largest Lyapunov exponent, are employed to indicate the regime transitions. The regime transitions are determined by the sudden increase and decrease of the chaotic invariants, which are computed by the pressure fluctuation signals obtained by varying the gas flow velocity. The determination of chaotic invariants predicts that there is no heterogeneous phase existing in the downcomer of the internal‐loop airlift reactor. The experimental observations agree well with the predicted results.

📜 SIMILAR VOLUMES

Effect of a gas–liquid separator on the
Effect of a gas–liquid separator on the hydrodynamics and circulation flow regimes in internal-loop airlift reactors
✍ Jaroslav Klein; Štefan Godo; Ondrej Dolgoš; Jozef Markoš 📂 Article 📅 2001 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 213 KB 👁 1 views

## Abstract The role of the gas–liquid separator on hydrodynamic characteristics in an internal‐loop airlift reactor (ALR) was investigated. Both gas holdup and liquid velocity were measured in a 30 dm^3^ airlift reactor with two different head configurations: with and without an enlarged separator

Volumetric mass transfer coefficients in
Volumetric mass transfer coefficients in an internal loop airlift reactor with low-density particles
✍ Karuppan Muthukumar; Manickam Velan 📂 Article 📅 2006 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 171 KB

## Abstract The influence of organic additives (propanol, benzoic acid, isoamyl alcohol and carboxymethylcellulose) on the volumetric mass transfer coefficient, __k__~L~__a__, in an internal loop airlift reactor with low‐density particles (nylon‐6 and polystyrene) was investigated. The __k__~L~__a_