Fluid dynamics in reactive distillation packing Katapak®-S

Moritz, Peter; Hasse, Hans

doi:10.1016/s0009-2509(99)00078-0

Cited by 90 publications

(65 citation statements)

References 11 publications

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“…The model agrees well with the experimentally obtained results. The model presented in [6], adapted for the reaction element structure considered in this study, gives similar results.…”

Section: Catalytic Load Pointmentioning

confidence: 55%

“…This point is characterized as the catalytic load or catalyst bed saturation point. In [6], the catalytic load point of the Katapak-S structure is defined based on the observed flow regimes. In the model, the catalytic load point is a function of the physical properties of the liquid, the particle size and the void fraction of the bed.…”

Section: Dynamic Liquid Holdupmentioning

confidence: 99%

“…Similar to the approach adopted in [6], a first principles-based model is developed for determination of the catalytic load point. At this point, the energy dissipation due to liquid flow around the particles is equal to the potential energy resulting from the height of the liquid in the bed.…”

Section: Catalytic Load Pointmentioning

confidence: 99%

“…The first commercial packings, Bale-packing [5] and Katapak-S [6,7], have a fixed size and shape of catalyst-containing elements (containers, bags, pockets) and a multiplicity of flow channels available for counter-current liquid and vapor flow. Katamax [4] is an example of structured packing coated with catalyst.…”

Section: Introductionmentioning

confidence: 99%

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Liquid Holdup in Catalyst‐Containing Pockets of a Modular Catalytic Structured Packing

Behrens¹,

Olujić

Jansens

2008

Chem Eng & Technol

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This paper introduces a simple, first principles-based model describing the liquid holdup in the catalyst-containing pockets of Katapak-SP, a modular catalytic structured packing developed to allow a certain degree of flexibility with respect to the variation in reaction-to-separation requirements in a single unit. The basic requirement for the catalyst-containing pockets in this respect is to be fully filled with flowing liquid which implies that the operating holdup is bound between the static holdup of the catalyst bed as the lower end, and that corresponding to the upper limit, the so-called catalytic load point. The latter is the liquid load corresponding to the bed saturation point, indicating that excessive liquid will be retained, i.e., will remain in the separation part of the packing element and mix with the liquid leaving the catalyst-filled pockets at the bottom of the element. Detailed knowledge of the liquid holdup as well as the pattern of the trickling flow is essential because it governs the performance of the reaction part and consequently the hybrid unit as a whole. Both glass and resin (an industrial catalyst) particles were used in conjunction with water and a binary water-methanol mixture as working fluids. The model predictions for static holdup and the catalytic load agree well with the experiments.

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“…The model agrees well with the experimentally obtained results. The model presented in [6], adapted for the reaction element structure considered in this study, gives similar results.…”

Section: Catalytic Load Pointmentioning

confidence: 55%

Section: Dynamic Liquid Holdupmentioning

confidence: 99%

Section: Catalytic Load Pointmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Liquid Holdup in Catalyst‐Containing Pockets of a Modular Catalytic Structured Packing

Behrens¹,

Olujić

Jansens

2008

Chem Eng & Technol

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“…This packing consists of open channels for gas flow and closed channels in which the granular catalyst is immobilized. At operation conditions below the load point the liquid flows through the bags filled with the catalyst [12]. CFDbased studies of different authors [13±16] treat the catalyst bed in closed channels as a quasi-homogeneous medium.…”

Section: Studied Geometriesmentioning

confidence: 99%

CFD-based Study on Hydrodynamics and Mass Transfer in Fixed Catalyst Beds

Kloker¹,

Kenig²,

Piechota³

et al. 2005

Chem. Eng. Technol.

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Communications about 0.35. In the range of higher humidities (capillary condensation) the GAB model agrees better with the experimental results. ConclusionsThe process of product drying and the change of the adsorbent moisture content can simply be investigated with the help of the rotating drum.The determination of the water vapor adsorption isotherms both for the products to be dried and the adsorbents is essential for the establishment of a physically based mathematical modeling of adsorption drying. For determining the adsorption equilibria the proven desiccator method and modern equipment (sorption analyzer) are available. For the mathematical description of the adsorption isotherms of the products investigated the GAB equation has proven to be very suitable.This means that there are good conditions for the process development and modeling of drying processes with adsorbents at low temperatures also below the freezing point. It also includes atmospheric fluidized bed freeze drying (e.g., [6±9]).

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Systems with Structured Packing: Fluid-Dynamics and Liquid-Solid Mass Transfer

Cavatorta

Böhm

2000

Chem. Eng. Technol.

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Fluid dynamics in reactive distillation packing Katapak®-S

Cited by 90 publications

References 11 publications

Liquid Holdup in Catalyst‐Containing Pockets of a Modular Catalytic Structured Packing

Liquid Holdup in Catalyst‐Containing Pockets of a Modular Catalytic Structured Packing

CFD-based Study on Hydrodynamics and Mass Transfer in Fixed Catalyst Beds

Systems with Structured Packing: Fluid-Dynamics and Liquid-Solid Mass Transfer

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