𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Volumetric mass transfer coefficients in an internal loop airlift reactor with low-density particles

✍ Scribed by Karuppan Muthukumar; Manickam Velan

Publisher
Wiley (John Wiley & Sons)
Year
2006
Tongue
English
Weight
171 KB
Volume
81
Category
Article
ISSN
0268-2575

No coin nor oath required. For personal study only.

✦ Synopsis

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 values increased with increase in superficial gas velocity, U~sg~, and decreased with increase in solid loading. A draft tube to reactor diameter ratio, D~R~/D, of 0.4 gave maximum k~L~a values. The addition of benzoic acid and propanol increased the k~L~a values owing to their coalescence inhibiting characteristics. The addition of isoamyl alcohol decreased k~L~a, owing to the formation of rigid bubbles and recirculation of small bubbles having a low oxygen content. The k~L~a values decreased with increase in the concentration of the non‐Newtonian fluid carboxymethylcellulose (CMC). The proposed correlations predicted the experimental data well. Copyright © 2006 Society of Chemical Industry

📜 SIMILAR VOLUMES

Volumetric Mass Transfer Coefficient of
Volumetric Mass Transfer Coefficient of Oxygen in An Internal Loop Airlift Reactor with a Convergence-Divergence Draft Tube
✍ C. Wei; Bo Xie; H. Xiao; D. Wang 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 291 KB 👁 2 views

Experimental measurements of hydrodynamics and the volumetric mass transfer coefficient of oxygen (VMTCO) in an internal loop airlift reactor with different types of draft tubes are reported for the two-phase systems, air/water and air/carboxyl methyl cellulose (CMC) solution, and a three-phase syst

Critical gas velocity in a three-phase i
Critical gas velocity in a three-phase internal loop airlift reactor with low-density particles
✍ Karuppan Muthukumar; Balakrishnan Naveen Prasad; Manickam Velan 📂 Article 📅 2004 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 122 KB

## Abstract In the present investigation the effects of the addition of organic additives (propanol, benzoic acid, iso‐amyl alcohol and carboxymethyl cellulose) on the critical gas velocity, (__U__~sg~)~c~, in an internal airlift loop reactor with low‐density particles (Nylon‐6 and polystyrene) wer

Measurement of mass transfer coefficient
Measurement of mass transfer coefficient in an airlift reactor with internal loop using coalescent and non-coalescent liquid media
✍ M Blažej; M Juraščík; J Annus; J Markoš 📂 Article 📅 2004 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 201 KB

## Abstract In this work the sulfite oxidation (SOM), dynamic pressure‐step (DPM) and gassing‐out (GOM) methods were compared for volumetric mass transfer coefficient measurement in an airlift reactor with internal loop. As a liquid phase both, non‐coalescent and coalescent media were used. Among t