PARTICLE-LIQUID MASS TRANSFER IN MULTI-IMPELLER AGITATED THREE PHASE REACTORS
作者:
N. N. DUTTA,
V. G. PANGARKAR,
期刊:
Chemical Engineering Communications
(Taylor Available online 1996)
卷期:
Volume 146,
issue 1
页码: 65-84
ISSN:0098-6445
年代: 1996
DOI:10.1080/00986449608936482
出版商: Taylor & Francis Group
关键词: Particle liquid mass transfer;Multiphase reactors
数据来源: Taylor
摘要:
The mass transfer coefficient between solid particle and liquid has been measured in high aspect ratio multiimpeller agitated three phase (gas-liquid-solid) reactors. Experiments were conducted in 0.15 and 0.30 m id acrylic columns of lm length each. Two types of impeller were used: disk turbine (DT) and pitched turbine downflow (PTD). Air used as the gas phase was introduced through a ring sparger of 0.8 D size located 0.1 T distance above the bottom. The interimpeller spacing was maintained at the tank diameter. The range of gas velocity used was 0-15 mm/s. A unique correlation between particle-liquid mass transfer coefficient and critical impeller speed for solid suspension has been presented.
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