Gas–liquid mass transfer and axial dispersion in solid foam packings

Stemmet, CP Charl; Meeuwse, M Marco; Schaaf, van der J John; Kuster, Bfm Ben; Schouten, JC Jaap

doi:10.1016/j.ces.2007.02.016

Cited by 99 publications

(100 citation statements)

References 7 publications

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“…18 The mass transfer per unit of energy is thus much lower than for most conventional reactors. 19 The mass transfer coefficient, however, is much higher than for conventional equipment, as is shown in Figure 8. 19,20 A high mass transfer coefficient can have a large influence on the selectivity in the case of competitive or consecutive reactions.…”

Section: Energy Requirementsmentioning

confidence: 92%

Multistage rotor‐stator spinning disc reactor

2011

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The scale up of a rotor-stator spinning disc reactor by stacking single stage rotorstator units in series is demonstrated. The gas-liquid mass transfer per stage is equal to the mass transfer in a single stage spinning disc reactor. The pressure drop per stage increases with increasing rotational disc speed and liquid flow rate. The pressure drop is more than a factor 2 higher for gas-liquid flow than for liquid flow only, and is up to 0.64 bar at 459 rad s À1 . The high mass and heat transfer coefficients in the (multistage) rotor-stator spinning disc reactor make it especially suitable for reactions with dangerous reactants, highly exothermic reactions and reactions where selectivity issues can be solved by high mass transfer rates. Additionally, the multistage rotor-stator spinning disc reactor mimics plug flow behavior, which is beneficial for most processes.

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Section: Energy Requirementsmentioning

confidence: 92%

Multistage rotor‐stator spinning disc reactor

2011

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“…The results illustrate how two-phase flow heat transfer is improved by using Metal Foam. (Stemmet et al, 2007) studied adiabatic co-current two-phase (water/air) flows in metallic foams. They showed that the relative permeability model by (Saez & Cabonell, 1985) can be used to describe the saturation (named in this paper liquid hold up) in structured solid foam packing.…”

Section: Adiabatic Two-phase Flowmentioning

confidence: 99%

Metal Foam Effective Transport Properties

Hugo¹,

Brun²,

Topin³

2011

Evaporation, Condensation and Heat Transfer

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“…In a novel rotor-stator spinning disc reactor, Meeuwse et al [118] reported that the mass transfer coeffi cient ( k GL a GL ) is one order of magnitude higher than the conventional reactor system; however, the energy input is around three orders of magnitude higher ( Figure 30 transfer per unit of energy dissipation is around 80 ml 3 MJ -1 [121] . From Figure 23 is can also be seen that the mass transfer coeffi cient is higher as compared to the conventional equipment [118][119][120]. The higher mass transfer coeffi cients in the rotor-stator spinning disc reactor can have a significant infl uence on the selectivity in the case of competitive or consecutive reactions.…”

Section: Spinning Disc Reactor Technologymentioning

confidence: 82%

Process intensification in green synthesis

Kumar

Nigam

2012

Green Processing and Synthesis

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In the past few decades there has been an extensive increase in the research for green synthesis processes due to environmental concerns, industrial safety and sustainable development, which makes it an attractive alternative to the conventional synthesis processes. The interest of researchers in the green synthesis processes highlights the importance of understanding the mechanism and the fundamental differences between the different processes. The number of publications in the fi eld of " Green Synthesis " in journals, proceedings, patents, etc. has increased by almost 20 times from 2001 to 2010. The published reports are mainly concerned with green synthesis with catalytic processes, less harmful solvents and process intensifi ed techniques. In the present article, the technological development efforts in the area of green synthesis are summarized. Various techniques for green synthesis process intensifi cation are discussed, e.g., mixers, microreactors, spin disc reactor, oscillated fl ow reactors, microwave irradiation, ultrasonication, multifunctional membranes and coiled fl ow inverter. The applications of green synthesis processes for biofuel, nanoparticle, ionic liquids and pharmaceutical production are also discussed.

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Gas–liquid mass transfer and axial dispersion in solid foam packings

Cited by 99 publications

References 7 publications

Multistage rotor‐stator spinning disc reactor

Multistage rotor‐stator spinning disc reactor

Metal Foam Effective Transport Properties

Process intensification in green synthesis

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