Water and n-heptane volume fractions in a rotor-stator spinning disc reactor / Frans Visscher in Industrial & engineering chemistry research, Vol. 51 N° 51 (Décembre 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 51 (Décembre 2012) . - pp. 16670–16676 Titre : Water and n-heptane volume fractions in a rotor-stator spinning disc reactor Type de document : texte imprimé Auteurs : Frans Visscher, Auteur ; Andre Bieberle, Auteur ; Markus Schubert, Auteur Année de publication : 2012 Article en page(s) : pp. 16670–16676 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Volume fractions n heptane water Rotor stator Résumé : This paper presents the volume fractions of n-heptane and water measured in a rotor-stator spinning disc reactor. The volume fractions were measured using γ-ray tomography and photographic image analysis. The volume fractions were determined as a function of rotational disc speed, flow ratio, position in the reactor, and rotor material. In addition, the effect of the density difference between water and n-heptane was determined by dissolving potassium iodide in the water phase. Below a rotational disc speed of 75 rpm the volume fraction measured by tomography and photographic image analysis are within 10% deviation. For low rotational disc speeds, the n-heptane volume fraction decreases slightly with increasing rotational disc speed: the centrifugal force accelerates the larger n-heptane droplets to the center. At higher rotational disc speeds the droplets become smaller accordingly, the friction between the phases determines the flow, and the n-heptane volume fraction becomes equal to the n-heptane to total flow ratio. An increase in density difference from 0.31 to 0.79 kg dm–3 did not influence the volume fractions. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie301439s [article] Water and n-heptane volume fractions in a rotor-stator spinning disc reactor [texte imprimé] / Frans Visscher, Auteur ; Andre Bieberle, Auteur ; Markus Schubert, Auteur . - 2012 . - pp. 16670–16676. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 51 (Décembre 2012) . - pp. 16670–16676 Mots-clés : Volume fractions n heptane water Rotor stator Résumé : This paper presents the volume fractions of n-heptane and water measured in a rotor-stator spinning disc reactor. The volume fractions were measured using γ-ray tomography and photographic image analysis. The volume fractions were determined as a function of rotational disc speed, flow ratio, position in the reactor, and rotor material. In addition, the effect of the density difference between water and n-heptane was determined by dissolving potassium iodide in the water phase. Below a rotational disc speed of 75 rpm the volume fraction measured by tomography and photographic image analysis are within 10% deviation. For low rotational disc speeds, the n-heptane volume fraction decreases slightly with increasing rotational disc speed: the centrifugal force accelerates the larger n-heptane droplets to the center. At higher rotational disc speeds the droplets become smaller accordingly, the friction between the phases determines the flow, and the n-heptane volume fraction becomes equal to the n-heptane to total flow ratio. An increase in density difference from 0.31 to 0.79 kg dm–3 did not influence the volume fractions. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie301439s

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