Xuan-Mi Meyer

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Different processes can be considered to separate multicomponent mixtures involving azeotropes. Among them, the pressure swing distillation is particularly interesting when the azeotropic composition is very pressure sensitive. The main advantage of this process is that the separation is performed without any extractive agent or entrainer. The main(More)
  • M Brehelin, F Forner, D Rouzineau, J.-U Repke, X Meyer, M Meyer +1 other
  • 2007
First steps of the development of a catalytic reactive distillation process for the production of n-propyl acetate based on experiments and simulations are proposed. The kinetics for homogeneously (sulphuric acid) and heterogeneously (Amberlyst 15) catalysed reaction were investigated and the constants for a pseudo-homogeneous model are presented. Pilot(More)
The study contributes to the characterization of an original reactive pressure swing distillation system. The methyl acetate (MeAc) transesterifi-cation with ethanol (EtOH) to produce methanol (MeOH) and ethyl acetate (EtAc) is shown as illustrative example. The streams outside the units are evaluated by the ∞/∞ analysis to provide insights on the process(More)
Firstly, a non-equilibrium model (or NEQ model) has implemented for multi component reactive separation processes. The mass transfer description is based on the Maxwell Stefan approach and the hydrodynamics on the film theory model. We have excluded other restrictive assumptions. The code calculation is implemented in the simulation software ProSim Plus¥.(More)
We report a patient with spontaneous intracranial hypotension treated with an epidural blood patch (EBP) and discuss the indication of this procedure in the treatment of this syndrome. Once diagnosis has been established (symptoms, CSF pressure, MRI), we propose to wait no more than a week, when simple treatment options have failed, before proceeding to an(More)
We report a case in which MRA made it possible to diagnose a dural arteriovenous fistula and thrombophlebitis in a 23-year old woman. 2D TOF MRA is the usual technique in the diagnosis of thrombophlebitis. Our experience shows the limits of 2D TOF since the increased signal intensity in the sinus could simulate a normal flow, and we describe the advantages(More)
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