FLOODING CHARACTERISTICS IN PULSED PACKED EXTRACTION COLUMNS

被引:21
作者
Asadollahzadeh, M. [1 ,2 ]
Haghighi-Asl, A. [2 ]
Safdari, J. [1 ]
Torab-Mostaedi, M. [1 ]
机构
[1] Nucl Fuel Cycle Res Sch, Nucl Sci & Technol Res Inst, Tehran, Iran
[2] Semnan Univ, Sch Chem Gas & Petr Engn, Semnan, Iran
关键词
Pulsed packed column; Flooding; Holdup; Characteristic Velocity; Throughput; LIQUID-LIQUID-EXTRACTION; SIEVE-PLATE COLUMN; VELOCITY;
D O I
10.1590/S0104-66322011000400009
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Flooding behavior of a 76.2 mm diameter pulsed packed column has been determined using four different liquid-liquid systems. The effects of pulsation intensity, flow ratio, interfacial tension, and packing geometry on flood point have been investigated. The results showed that the maximum throughput of the column decreases with an increase in pulsation intensity and flow ratio, while it increases with an increase in interfacial tension. The applicability of the characteristic velocity method to this type of column for the analysis of the flood point was examined and a marked deviation was observed between experimental results and values calculated by this method. Two new empirical correlations for flooding velocity and holdup at flooding are derived in terms of operating variables, packing characteristics, and physical properties of the liquid systems. Good agreement between prediction and experiments has been found for all operating conditions that were investigated.
引用
收藏
页码:639 / 648
页数:10
相关论文
共 18 条
[1]   FLOODING IN PULSED SIEVE PLATE EXTRACTORS [J].
BERGER, R ;
WALTER, K .
CHEMICAL ENGINEERING SCIENCE, 1985, 40 (12) :2175-2184
[2]   APPLICATION OF PULSATION TO LIQUID-LIQUID EXTRACTION [J].
CHANTRY, WA ;
VONBERG, RL ;
WIEGANDT, HF .
INDUSTRIAL AND ENGINEERING CHEMISTRY, 1955, 47 (06) :1153-1168
[3]  
Gayler R., 1953, T I CHEM ENG-LOND, V31, P57
[4]   Dispersed phase hold-up in a Graesser raining bucket contactor using aqueous two-phase systems [J].
Giraldo-Zuniga, AD ;
Coimbra, JSR ;
Minim, LA ;
Rojas, EEG .
JOURNAL OF FOOD ENGINEERING, 2006, 72 (03) :302-309
[5]  
GODFREY JC, 1991, CHEM ENG RES DES, V69, P130
[6]  
Hamidi A, 1999, J CHEM TECHNOL BIOT, V74, P244, DOI 10.1002/(SICI)1097-4660(199903)74:3<244::AID-JCTB31>3.0.CO
[7]  
2-W
[8]  
HUSSAIN AA, 1988, CHEM ENG RES DES, V66, P541
[9]  
Jahya A., 1999, P CHEM 99 NEWC AUSTR
[10]   Pulsed Disc-and-Doughnut Column Performance [J].
Jahya, A. B. ;
Stevens, G. W. ;
Pratt, H. R. C. .
SOLVENT EXTRACTION AND ION EXCHANGE, 2009, 27 (01) :63-82