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Titolo:
Effects of dispersed phase flow rate and internals on the throughput of a mixer-settler extraction column with lifter-turbine impellers
Autore:
Nishiyama, R; Ban, T; Nii, S; Kawaizumi, F; Takahashi, K;
Indirizzi:
Nagoya Univ, Dept Chem Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 a Ku, Nagoya, Aichi 4648603, Japan
Titolo Testata:
SOLVENT EXTRACTION RESEARCH AND DEVELOPMENT-JAPAN
, volume: 8, anno: 2001,
pagine: 223 - 234
SICI:
1341-7215(2001)8:<223:EODPFR>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Nishiyama, R Nagoya Univ, Dept Chem Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan Nagoya Univ Nagoya Aichi Japan 4648603 Aichi 4648603, Japan
Citazione:
R. Nishiyama et al., "Effects of dispersed phase flow rate and internals on the throughput of a mixer-settler extraction column with lifter-turbine impellers", SOL EX R D, 8, 2001, pp. 223-234

Abstract

Maximum throughput and pressure distribution within the mixer were measured for a mixer-settler extraction column of 100 mm diameter in which the internals have been simplified in comparison with the column used in previous work. The effects of agitation speed, structure of riser and dispersed phase flow rate on the maximum flow rate of the continuous phase were examined,as well as the pressure distribution in the mixer. Throughput increases with agitation speed except for low agitation speed. The riser position whichleads to the largest throughput is the point beneath the impeller. The flow resistance accompanied by the discharging dispersed phase and the effect of shear flow at the upper end of the riser make it difficult to estimate the effects of the riser diameter and the riser height on the maximum throughput. It was confirmed that the throughput is substantially determined fromthe balance between the fluid flow pressure drop, the suction pressure induced by the lifter-turbine impeller, and the buoyant force. Though the estimated value is somewhat larger than the experimental one for high agitationspeed, the change ill maximum throughput with the organic flow rate for various diameters of the riser is reproduced by the calculation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 04:11:24