Oxygen transfer in an airlift reactor with multiple net draft tubes

✍ Scribed by W. -T. Wu; D. -Y. Hsiun

• Publisher: Springer
• Year: 1996
• Tongue: English
• Weight: 324 KB
• Volume: 15
• Category: Article
• ISSN: 1615-7605
• DOI: 10.1007/bf00372978

✦ Synopsis

A pilot scale airlift reactor with multiple net draft tubes was developed to improve oxygen transfer in the reactor. The reactor was 0.29 m in diameter and 2 m height. A steadystate sulfite oxidation method was applied to determine an overall volumetric mass transfer coefficient. Oxygen transfer of the proposed airlift reactor can be 60-100% higher than that of bubble columns under the same operating conditions.

List of symbols

C* mol. dm-3 CL tool. dm-3 G mol/min kLa hr -I Mo 2 g/mol OTR g/min Ug cin/s V L dm 3 Yin ]out saturated concentration of dissolved oxygen bulk concentration of dissolved oxygen nitrogen flow rate the volumetric gas-liquid mass transfer coefficient molecular weight of oxygen the oxygen transfer rate superficial air velocity volume of the liquid phase oxygen mole ratio in the inlet gas oxygen mole ratio in the outlet gas