Perforated-Plate Liquid-Liquid Extraction Towers.  Effect of Plate Spacing in the Methyl Isobutyl Ketone-Butyric Acid-Water System

Murty, R. Krishna.; Rao, C. Venkata Siva Rama

doi:10.1021/i260026a002

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…Relatively small HTU values were reported for pulsed-type extractors such as pulsed perforatedplate 15,17 , Karr reciprocating plate 16 , pulsed sieve-plate 18 and pulsed sieve-plate with packing 19 . Baird et al 17 studied HTU with pulse-type extractors in both physical and chemical extraction systems.…”

Section: Comparison Of Htu With Conventional Extraction Equipmentmentioning

confidence: 98%

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Evaluation of Mass-transfer Performance of Emulsion-flow Column with Height of Transfer Unit (HTU) and Number of Theoretical Plates, and Comparison of HTU with Column-type Extractors

et al. 2020

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The performance of iodine extraction in the emulsion-flow column was evaluated using an indicator of difficulty in separation, height of transfer unit, HTU and of the number of theoretical plates, Nth. Resulting HTU values ranged from 0.15 to 0.78 m and Nth changed from 0.58 to 1.3. HTU values were formulated in accordance with operating liquid velocities. Despite a 30% margin of error, HTU values were found to be useful in predicting column performance. Observed HTU values were compared with those of conventional extraction columns with or without mechanical agitation. The emulsion-flow column meets the top-level performance of extractors without mechanical agitation, such as packed and spray columns, and performs in the middle range of agitated extractors, although these sacrifice the structure simplicity to assure stable counter-current operation. The advantage of the emulsion-flow column is better HTU values with stable counter-current operation in a simple column structure.

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Section: Comparison Of Htu With Conventional Extraction Equipmentmentioning

confidence: 98%

“…(A) shows HTU values for extractors with agitation mechanisms[12][13][14][15][16][17][18][19] . Table 1(B) presents HTU values for extractors without active agitation were presented[20][21][22][23] .…”

mentioning

confidence: 99%

Evaluation of Mass-transfer Performance of Emulsion-flow Column with Height of Transfer Unit (HTU) and Number of Theoretical Plates, and Comparison of HTU with Column-type Extractors

et al. 2020

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“…According to the literature, 24,25 the ratio of the theoretical plate number to the actual plate number was used to calculate the overall efficiency:…”

Section: Continuity Equationmentioning

confidence: 99%

“…According to the literature, , the ratio of the theoretical plate number to the actual plate number was used to calculate the overall efficiency: E normalA = ( N A N ) × 100 % Here, N normalA = ln ( driving ⁡ force ⁡ at ⁡ base ⁡ terminal driving ⁡ force ⁡ at ⁡ top ⁡ terminal ) ln ( slope ⁡ of ⁡ operating ⁡ line slope ⁡ of ⁡ equilibrium ⁡ line ) = ln ( C out − C out * C in − C in * ) ln ( ρ c u s…”

Section: Computational Mass Transfer Performancementioning

confidence: 99%

Flow Pattern Optimization of a Sieve Plate Extraction Column Using Computational Fluid Dynamics Simulations and Particle Image Velocimetry Measurements

Duan

Wang

Liu

et al. 2013

Ind. Eng. Chem. Res.

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Flow pattern optimization of the continuous phase in a sieve plate extraction column (SPEC) was studied using computational fluid dynamics (CFD) simulations and particle image velocimetry (PIV) measurements. Simulations revealed a large reverse flow area between every two plates in the traditional SPEC. The flow pattern was optimized with the objective of minimizing reverse flow area since the reverse flow decreased mass transfer efficiency (MTE). Four new generations of SPECs with different internal structures were proposed. Structure modifications included slotting and inclining the downcomers, adding baffles, adjusting the number of slots, and fixing small, leveled baffles at some slots. An optimal flow pattern almost without reverse flow area evolved. PIV measurements were carried out on three differently structured SPECs, and the results of simulations and measurements were in good agreement. Meanwhile, simulations showed that MTE improved as the flow pattern was optimized.

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Enzyme mass transfer coefficient in a sieve plate extraction column

Bhawsar¹,

Pandit²,

Sawant³

et al. 1994

The Chemical Engineering Journal and the Biochemical Engineerin

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Perforated-Plate Liquid-Liquid Extraction Towers. Effect of Plate Spacing in the Methyl Isobutyl Ketone-Butyric Acid-Water System

Cited by 4 publications

References 5 publications

Evaluation of Mass-transfer Performance of Emulsion-flow Column with Height of Transfer Unit (HTU) and Number of Theoretical Plates, and Comparison of HTU with Column-type Extractors

Evaluation of Mass-transfer Performance of Emulsion-flow Column with Height of Transfer Unit (HTU) and Number of Theoretical Plates, and Comparison of HTU with Column-type Extractors

Flow Pattern Optimization of a Sieve Plate Extraction Column Using Computational Fluid Dynamics Simulations and Particle Image Velocimetry Measurements

Enzyme mass transfer coefficient in a sieve plate extraction column

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