Vaporization from liquid film of binary mixture in a centrifugal molecular still.

Inuzuka, Masanori; Ishikawa, Hiroshi; Yamada, Ikuho; Hiraoka, Setsuro; Aragaki, Tsutomu; Inukai, Yoshihiro; Erciyes, A. Tuncer; Kobayashi, Sotaro

doi:10.1252/jcej.22.291

Cited by 6 publications

(6 citation statements)

References 6 publications

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“…The continuity equation can be written as follows: , 1 3600 d Q ′ d r + 2 π r G E false( sin nobreak0em.25em⁡ β ′ false) = 0 …”

Section: Theoretical Basismentioning

confidence: 99%

“…The velocity profile in the liquid film is assumed to be fully developed on the rotating evaporator surface. , μ ∂ 2 υ r ( r ) ∂ s 2 + ρ ( sin 2 ⁡ β ′ ) r ω 2 = 0 …”

Section: Theoretical Basismentioning

confidence: 99%

“…The mathematical description is based on the modeling of the centrifugal molecular distillation process (noncatalytic process) proposed by Tovar et al, 18 Kawala and Stephan, 37 Bruin, 38 and Inuzuka et al 39 as a starting point to develop a specific modeling of the CRMD process for high-boiling-point petroleum fractions. The following assumptions were made to develop the generalized two-dimensional steady state mathematical model of the CRMD process:…”

Section: Theoretical Basismentioning

confidence: 99%

“…Overall Mass Balance. The continuity equation can be written as follows: 18,39 The velocity profile in the liquid film is assumed to be fully developed on the rotating evaporator surface. 18,39…”

Section: Theoretical Basismentioning

confidence: 99%

See 3 more Smart Citations

Centrifugal Reactive-Molecular Distillation from High-Boiling-Point Petroleum Fractions. 1. Mathematical Modeling, Screening Variables, and Experimental Validation

Tovar

Wolf-Maciel

Winter

et al. 2013

Ind. Eng. Chem. Res.

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The modeling and simulation of the reactive-molecular distillation process (centrifugal type-CRMD) to upgrade high-boiling-point petroleum fractions is presented in this work. A case study is presented for an atmospheric petroleum residue (673.15 K+) of “W” crude oil. The use of the Plackett–Burman and fractional factorial designs (2IV 4–1) permitted the evaluation of the effects of the independent variables (evaporator temperature, feed flow rate, percent weight of catalyst, feed temperature, condenser temperature, rotor speed, and system pressure) on the dependent variables: film thickness, surface evaporation rate, distillate mass flow rate, concentration profiles, and velocity profiles. The results showed that the independent variables, the evaporator temperature and the percent weight of catalyst, were relevant operational conditions for the performance of the CRMD process reaching a conversion of the feedstock about 65% at 3 wt % of catalyst and 64% at 5 wt % of catalyst in the distillate stream and 49% at 3 wt % of catalyst and 53% at 5 wt % of catalyst in the residue stream. Due to the rapid temperature rise in the thin liquid film, the thickness of the film rapidly decreased in this region, whereas the amount of distillate mass flow rate from the split molecules continuously increased.

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“…The continuity equation can be written as follows: , 1 3600 d Q ′ d r + 2 π r G E false( sin nobreak0em.25em⁡ β ′ false) = 0 …”

Section: Theoretical Basismentioning

confidence: 99%

“…The velocity profile in the liquid film is assumed to be fully developed on the rotating evaporator surface. , μ ∂ 2 υ r ( r ) ∂ s 2 + ρ ( sin 2 ⁡ β ′ ) r ω 2 = 0 …”

Section: Theoretical Basismentioning

confidence: 99%

Section: Theoretical Basismentioning

confidence: 99%

Section: Theoretical Basismentioning

confidence: 99%

See 2 more Smart Citations

Centrifugal Reactive-Molecular Distillation from High-Boiling-Point Petroleum Fractions. 1. Mathematical Modeling, Screening Variables, and Experimental Validation

Tovar

Wolf-Maciel

Winter

et al. 2013

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Bhandarkar and Ferron [7] investigated the selectivity and evaporation rate and provided a scaleup strategy for the distillator. Inuzuka and Ishikawa [8] developed a model for the binary system under pressure of less than 0.1 Pa. Batistella and Maciel [9] simulated the process in the falling-film and centrifugal distillator separately, and the two styles were compared. Usually, the experimental centrifugal style still is operated under pressures ranging from 0.01 to 1.5 Pa.…”

Section: Introductionmentioning

confidence: 99%

CFD Simulation of the Heat and Mass Transfer Process during Centrifugal Short‐Path Distillation

et al. 2014

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Numerical simulation was carried out for a centrifugal short-path distillation arrangement using the computational fluid dynamics technology. Both two phases and interfacial transport were taken into account with an attempt to explore the heat and mass transport in the film body and the interface. The model tried to provide a general method to study the short-path distillation in various situations. The effects of feed flow rates, feed and heating wall temperature controlling the development of the temperature and concentration along the axial and radial direction were investigated. On the basis of the simulation results, detailed characteristics such as distribution of temperature and concentration, heat and mass transfer coefficient throughout the liquid film can be described.

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CFD Analysis of Heat Transfer across the Laminar Wavy Film on a Centrifugal Molecular Distillator

Jiang¹,

Zeng²,

Xing³

et al. 2015

Chem Eng & Technol

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Laminar wave dynamics and the associated heat transfer across the spinning film is a highly important process in chemical engineering, but there is still a lack of sufficient investigation of the transfer flux based on the fundamental hydrodynamics parameters. A two-dimensional computational fluid dynamics simulation of the spinning film on a centrifugal molecular distillator is performed in order to explore the effect of the interfacial wave behavior on the heat transfer. Numerical results reveal that the heat transfer is enhanced by the convective motions in the waves. Resulting from these findings, the relationship between the operation parameters and heat transfer is also discussed.

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Vaporization from liquid film of binary mixture in a centrifugal molecular still.

Cited by 6 publications

References 6 publications

Centrifugal Reactive-Molecular Distillation from High-Boiling-Point Petroleum Fractions. 1. Mathematical Modeling, Screening Variables, and Experimental Validation

Centrifugal Reactive-Molecular Distillation from High-Boiling-Point Petroleum Fractions. 1. Mathematical Modeling, Screening Variables, and Experimental Validation

CFD Simulation of the Heat and Mass Transfer Process during Centrifugal Short‐Path Distillation

CFD Analysis of Heat Transfer across the Laminar Wavy Film on a Centrifugal Molecular Distillator

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