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Persoonlijk profiel

Quote

"The switch to renewable resources requires a new generation of chemical production plants. I develop small, multipurpose and durable production units enabling a self-sustainable chemical community that provides for local welfare and wellbeing."

Research profile

The research of John van der Schaaf focuses on the development of catalytic and non-catalytic multiphase reactors that use rotation to create high gravity and high shear conditions. These conditions lead to excellent interphase mass transfer, intraphase mixing, and fluid-to-wall heat transfer. Applications are especially in (exothermic) fast reactions that are interphase mass transfer limited, are mixing limited, or are heat transfer limited. Additionally, in a high gravity field two phases with different density can be contacted countercurrently. Thus, distillation (gas-liquid), extraction (liquid-liquid), and crystallization (liquid-solid) become feasible.

The high-gravity high-shear conditions enable the use of extremely compact equipment for the chemical industry. The equipment is easily a factor hundred smaller than conventional equipment. The much smaller equipment size allows for the safe use of high temperatures and high pressures, enlarging the economic process window. An additional benefit of the small equipment size is that expensive construction materials and coatings can be used, with only a minor increase in equipment costs.

In future research Van der Schaaf will focus on the performance of high-gravity high-shear equipment as a function of design, operating conditions, and fluid properties. For proper design and optimization, preferably determined with industrially relevant systems, research is required into e.g. flow patterns, mixing intensity, and interphase mass transfer.

Academic background

John van der Schaaf studied chemical engineering at TU Delft where he obtained his master's degree in 1993. In 1998 he obtained his PhD from the same university with his thesis 'Dynamics of Gas-Solids Fluidized Beds - analysis of pressure fluctuations'. Until 2000 he performed postdoctoral research at TU Delft on the validation of computational fluid dynamics codes for gas-solid fluidized beds. In 2000 he moved to Eindhoven University of Technology (TU/e) where he joined the Glass Technology research group of Prof. Ruud Beerkens to perform postdoctoral research on the formation of foam in glass melting furnaces, in cooperation with TNO. In 2003 he started working as assistant professor (tenure track) in the Chemical Reactor Engineering group of Prof. Jaap Schouten. In 2014 he was appointed associate professor and since 2017 he is the chair of the group.

Vingerafdruk Verdiep u in de onderzoeksgebieden waarop John van der Schaaf actief is. Deze onderwerplabels komen uit het werk van deze persoon. Samen vormen ze een unieke vingerafdruk.

  • 4 Soortgelijke profielen

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Onderzoeksoutput

Improving liquid distribution in a rotating packed bed

Hacking, J. A., Delsing, N. F. E. J., de Beer, M. M. & van der Schaaf, J., mrt 2020, In : Chemical Engineering and Processing : Process Intensification. 149, 14 blz., 107861.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

Open Access
Bestand
  • 53 Downloads (Pure)

    Maxwell-Stefan modeling and experimental study on the ionic resistance of cation-selective membranes in concentrated lye solutions

    Sijabat, R. R., de Groot, M. T. & van der Schaaf, J., 15 jul 2020, In : Journal of Membrane Science. 607, 14 blz., 118134.

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

    Open Access
    Bestand
  • 2 Downloads (Pure)

    The butoxylation of dodecylamine: reaction mechanism and kinetics

    Müller, P., Krösschell, R. D. E., Winkenwerder, W. & van der Schaaf, J., 15 feb 2020, In : Chemical Engineering Journal. 382, 9 blz., 122939.

    Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

  • 1 Downloads (Pure)

    An improved kinetic model for micromixing characterization using the Villermaux-Dushman method

    Manzano Martinez, A., Haase, S., Assirelli, M. & van der Schaaf, J., 12 nov 2019, Proceeding: 2019 AIChE Annual Meeting. blz. 1 1 blz.

    Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

    Open Access
  • Characterization of micromixing in a rotor-stator spinning disc reactor: effects of gap distance

    Manzano Martinez, A., Assirelli, M. & van der Schaaf, J., 11 nov 2019, blz. 1. 1 blz.

    Onderzoeksoutput: Bijdrage aan congresAbstract

    Open Access
    Bestand

    Cursussen

    Capita selecta

    1/09/16 → …

    Cursus

    Chemische reactorkunde

    1/09/13 → …

    Cursus

    Energie

    1/09/13 → …

    Cursus

    Graduation Project CPT

    1/09/15 → …

    Cursus

    Knipsels

    Scriptie

    3D scalar field simulations for Micro Mixing applications in a cylindrical geometry: implementation and verification

    Auteur: van Kouwen, R., 28 feb 2018

    Begeleider: van der Schaaf, J. (Afstudeerdocent 1), van Eeten, K. (Afstudeerdocent 2), Aguirre, A. (Afstudeerdocent 2), Peters, E. (Afstudeerdocent 2) & Buist, K. (Afstudeerdocent 2)

    Scriptie/masterproef: Master

    Bestand

    A computational study of turbulent jet behaviour in a spray dryer

    Auteur: Perederija, T., 30 apr 2013

    Begeleider: Kuipers, J. (Afstudeerdocent 1), Deen, N. (Afstudeerdocent 2), Padding, J. (Afstudeerdocent 2), van der Schaaf, J. (Afstudeerdocent 2) & Pawar, S. (Afstudeerdocent 2)

    Scriptie/masterproef: Master

    A detailed numerical study on the micro mixing behaviour of turbulent flow fields at low Schmidt numbers: implementation and validation

    Auteur: Hop, V., 29 mei 2019

    Begeleider: van der Schaaf, J. (Afstudeerdocent 1), van Kouwen, E. (Afstudeerdocent 2), Aguirre, A. (Afstudeerdocent 2) & Roghair, I. (Afstudeerdocent 2)

    Scriptie/masterproef: Master

    Bestand

    A mechanistic study of methane steam reforming over ceria-zirconia supported rhodium

    Auteur: van Leendert, R., 31 aug 2009

    Begeleider: Halabi, M. (Afstudeerdocent 1), van der Schaaf, J. (Afstudeerdocent 2), de Croon, M. (Afstudeerdocent 2), Meuldijk, J. (Afstudeerdocent 2) & Schouten, J. (Afstudeerdocent 2)

    Scriptie/masterproef: Master

    An experimental and numerical study of ion and water fluxes through a cation-selective membrane at high current densities

    Auteur: Oppers, N., 31 dec 2014

    Begeleider: Moshtari Khah, S. (Afstudeerdocent 1), van der Schaaf, J. (Afstudeerdocent 2), Schouten, J. (Afstudeerdocent 2) & de Groot, M. (Externe coach)

    Scriptie/masterproef: Master

    Bestand