Adsorptive drying of toluene

Joshi, Sudhir; Fair, James R.

doi:10.1021/ie00083a020

Cited by 23 publications

(23 citation statements)

References 7 publications

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“…To determine the film mass transfer coefficient, k f , several relationships have been found 30. 32–35 Finally, the best results have been obtained using the Wilson and Geankoplis correlation eqn 10 which has already been used by many authors 11. 30, 32, 35–37 …”

Section: Mass Transfer Modelmentioning

confidence: 99%

“…The linear combination of mass‐transfer resistances has been previously used by several authors 5. 11, 30 The axial dispersion term was determined from the data proposed by Levenspiel 31. To determine the film mass transfer coefficient, k f , several relationships have been found 30.…”

Section: Mass Transfer Modelmentioning

confidence: 99%

“…A substantial body of kinetic data for adsorption on alumina covering a fairly wide range of temperature and concentration has now been accumulated, but some of the results are conflicting or contradictory 5. Kinetic studies of water vapour adsorption have been reported by Carter,6–8 Marcussen9 and Desai et al 10 In the case of drying of liquid mixtures some examples working with toluene,11 xylene,12 ethanol,13 ethylene dichloride,14 diethyl ether15 and benzene16 can be found. Adsorption kinetics for a variety of other sorbates including cyclohexane, hexane, heptane,17 poly(acrylic acid) and poly(vinyl alcohol)18 or oxalic, maleic, benzoic and salicylic acids19 onto alumina have also been reported.…”

Section: Introductionmentioning

confidence: 99%

“…Adsorption kinetics for a variety of other sorbates including cyclohexane, hexane, heptane,17 poly(acrylic acid) and poly(vinyl alcohol)18 or oxalic, maleic, benzoic and salicylic acids19 onto alumina have also been reported. Work concerning other adsorbents for drying of organic compounds such as molecular sieves11, 20–22 or ion‐exchange resins1 has also been reported. Anyway, there are several important reviews in this subject such as those by Basmadjian23 or Valenzuela and Myers 24…”

Section: Introductionmentioning

confidence: 99%

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Scale‐up of adsorptive styrene drying

Rivero

Gorri

Ibáñez

et al. 2002

Polymer International

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This work is focused on the analysis of the scale‐up process of styrene drying by adsorption onto activated alumina as a necessary step in the manufacture of styrene–butadiene rubber. In a previous work, the mathematical model was developed and the design parameters were estimated from the fitting of the model to experimental results obtained in a laboratory set‐up. The obtained model and parameters have been used to simulate the behaviour of a pilot plant that contains up to 56 times more sorbent stating their validity after comparison with experimental results. Finally, the behaviour of an industrial plant presently at work, was also satisfactorily described. The ability of the model to simulate experimental results obtained on three different scales checks its adequacy for process design and optimization. © 2002 Society of Chemical Industry

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Section: Mass Transfer Modelmentioning

confidence: 99%

Section: Mass Transfer Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Scale‐up of adsorptive styrene drying

Rivero

Gorri

Ibáñez

et al. 2002

Polymer International

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“…Adsorption is one of the possible methods for obtaining ultrapure solvents. 2 Because of their high hygroscopicity, molecular sieves have already demonstrated their adsorption capability for the drying of ethanol, 3 , 4 higher alcohols 5 , 6 and esters, 7 , 8 toluene, 9 and other hydrocarbons 10 and solvents. 11 The general conclusion is that hydrophobic solvents are easier to dry.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive Water Removal from Dichloromethane and Vapor-Phase Regeneration of a Molecular Sieve 3A Packed Bed

Jović

Laxminarayan

Keurentjes

et al. 2017

Ind. Eng. Chem. Res.

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The drying of dichloromethane with a molecular sieve 3A packed bed process is modeled and experimentally verified. In the process, the dichloromethane is dried in the liquid phase and the adsorbent is regenerated by water desorption with dried dichloromethane product in the vapor phase. Adsorption equilibrium experiments show that dichloromethane does not compete with water adsorption, because of size exclusion; the pure water vapor isotherm from literature provides an accurate representation of the experiments. The breakthrough curves are adequately described by a mathematical model that includes external mass transfer, pore diffusion, and surface diffusion. During the desorption step, the main heat transfer mechanism is the condensation of the superheated dichloromethane vapor. The regeneration time is shortened significantly by external bed heating. Cyclic steady-state experiments demonstrate the feasibility of this novel, zero-emission drying process.

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Simultaneous Heat and Mass Transfer

Wenzel

2000

Kirk-Othmer Encyclopedia of Chemical Technology

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In process operations where material is transferred between phases, usually between liquid and vapor phases, the transport process may be described in terms of heat transfer and mass transfer. When both expressions are developed and handled simultaneously, the resulting equations show that heat and mass transfer affect each other. Equations applied to humidification and dehumidification processes are presented. These expressions could equally well be applied to drying, evaporation, or crystallization processes. The conceptual design of counterflow cooling towers or dehumidification towers is discussed, as are the mechanical and operating features of these columns, costs, and environmental impacts. In all of these processes the air–water system is usually of concern. Thus the properties of moist air are developed and displayed on psychrometric charts.

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Adsorptive drying of toluene

Abstract: A recent paper by Moon and Tien describes an improvement to the FastlAS technique of multicomponent adsorption equilibria prediction, originally introduced by the present authors. In this

Cited by 23 publications

References 7 publications

Scale‐up of adsorptive styrene drying

Scale‐up of adsorptive styrene drying

Adsorptive Water Removal from Dichloromethane and Vapor-Phase Regeneration of a Molecular Sieve 3A Packed Bed

Simultaneous Heat and Mass Transfer

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