Extraction and absorption with a vibrating perforated plate

Baird, M. H. I.; Vijayan, S.; Rao, N. V. Rama; Rohatgi, Aashish

doi:10.1002/cjce.5450670510

Cited by 7 publications

(1 citation statement)

References 18 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A vibration exciter control 1050 (10) gives the desirable vibration parameters: they gain strength by means of a power amplifier 2712 (9), are reproduced by the vibration exciter and transmitted through the connection rod and the plate to the water. Vibration frequency varied from 10 to 80 Hz and the amplitude from 0.3 to 1.5 mm.…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Effect of Plate Oscillation on Bubble Residence Time in an Aerated Stagnant Liquid

Grinis¹,

Kholmer²,

Fominykh³

2005

Chem. Eng. Technol.

View full text Add to dashboard Cite

Gas transfer efficiency during absorption is an important factor in various technological processes involving the interaction between liquid and gaseous systems. It is known that gas bubble motion characteristics strongly affect the efficiency of mass transfer during gas absorption. A device for mechanical vibration of an aerated liquid was designed, based on a cylindrical column filled up with tab water and a plate oscillating in the vertical direction. The goal of the present study is to investigate the effect of vibration parameters such as amplitude, frequency and form of the applied signal on the efficiency of the oxygenation process. Bubble residence time in the liquid and bubble depth of submergence related to the oscillating plate surface were chosen as main parameters for measurements. Furthermore, experiments were conducted to study the effect of the design parameters of the vibrating plate on bubble motion characteristics. The resultant data show that bubble residence time and depth of submergence can be controlled by changing the amplitude, the frequency and the form of the vibration field applied.

show abstract

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Effect of Plate Oscillation on Bubble Residence Time in an Aerated Stagnant Liquid

Grinis¹,

Kholmer²,

Fominykh³

2005

Chem. Eng. Technol.

View full text Add to dashboard Cite

show abstract

Gas Holdup from the Free Surface of Liquids Subjected to a Vertically Vibrating Plate

Grinis

Kholmer

2007

Chem Eng & Technol

View full text Add to dashboard Cite

Gas holdup is an important factor in the various technological processes involving the interaction between liquid and gaseous systems. The goal of the present research is to study the effect of vibration parameters and plate design on the gas holdup efficiency in a vibrating plate column. The gas bubbles were generated by the vibrating plate, which was sufficiently close to the liquid surface. An analytical model for the calculation of the gas holdup was developed. A device for the introduction of the gas and the vertical vibration of the liquid was designed and used in this research. The experimental data obtained are in good agreement with the theoretical calculations. The results show the possibility of enhancing the gas holdup by changing the vibration parameters and optimizing the vibrating plate unit design parameters.

show abstract

Axial mixing and mass transfer in a vibrating perforated plate extraction column

1992

View full text Add to dashboard Cite

Perforated Plate Ont. L8S 4L7The axial mixing and countercurrent mass transfer characteristics of a 5 cm diameter extraction column agitated by vibrating perforated Teflon plates have been investigated. The dispersed phase was an organic liquid (usually kerosene) and the continuous phase was water. Axial mixing was measured in both phases using pulse tracer techniques; in the continuous phase the axial mixing was estimated to have a significant effect on mass transfer, but axial mixing in thc dispersed phase had a negligible effect. Mass transfer was measured for several different solutes; n-butyric acid. benzoic acid and phenol. The overall heights of a transfer unit (cont. phase) were in the order of 10-20 crn for the organic acids but higher for transfer of phenol from very dilute solutions. The characteristics of the vibrating plate column have been compared with those of other types of extractor and suggestions are made for further development..~ ~ ~~ On a CtudiC les caracteristiques du melange axial et du transfert de matiere a contre-courant d'une colonne d'extraction de 5 cm de diamktre agitee par des plateaux de Teflon perforts vibrants. La phase dispersie est un liquide organique (generalement du kerosene) et la phase continue de I'eau. Le mtlange axial a it6 mesure dans les deux phases par des techniques de traqage pulse; dans la phase continue, on a trouve que le melange axial avait un effet significatit sur le transfert de matikre, tandis que dans la phase disperske, I'effet est negligeable. Le transfert de rnatikre ; t eti mesure pour differents solutes: acide n-butyrique, acide benzoi'que et phenol. Les hauteurs globales de I'uniti de transfen (phase continue) sont comprises entre 10 et 20 cm pour les acides organiques mais elles sont plus elevi-es pour le transfert du phenol a partir de solutions trks diluees. Les caracteristiques de la colonne h plateaux vibrants sont coniparees a celles d'autres types d'extracteurs et des suggestions sont apportees pour de nouveaux dkveloppements.Keywords: axial mixing, liquid-liquid extraction, vibrating plate column. ow frequency reciprocating plate and pulsed plate L extraction columns are well known. Less attention has been paid to the use of high frequencies (10-200 Hz) and low amplitudes (< 1 mm) as a means of plate agitation, despite the potential advantage that the electrical service frequency (60 Hz) can be used to power simple and reliable electromagnetic drives.The background in these areas has been reviewed by Baird et al. (1989) who also described preliminary tests of both liquid-liquid and gas-liquid contact in single cells using vibrating perforated plates. Rama Rao et al. (1991) have described the hydrodynamic behaviour of a 5 cm diameter countercurrent extractor agitated by a stack of perforated Teflon plates equipped with segmental downcomers. By the use of small perforations (1 mm or less) it was possible to obtain drops with a Sauter mean diameter considerably less than 1 mm with only moderate levels of agitation (amplitudefrequency product...

show abstract

Extraction and absorption with a vibrating perforated plate

Cited by 7 publications

References 18 publications

Effect of Plate Oscillation on Bubble Residence Time in an Aerated Stagnant Liquid

Effect of Plate Oscillation on Bubble Residence Time in an Aerated Stagnant Liquid

Gas Holdup from the Free Surface of Liquids Subjected to a Vertically Vibrating Plate

Axial mixing and mass transfer in a vibrating perforated plate extraction column

Contact Info

Product

Resources

About