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The CO 2 hydrogenation to methanol is favored by high pressure from the thermodynamic point of view. Mostly experimental work on this reaction is limited at 400bar due to technical and safety reasons. In this work we present a high pressure plant able to conduct CO 2 hydrogenation reactions at pressures up to 950bar in a capillary microreactor; we focus on the influence of pressure...
The current paper provides an overview of recent and past research activities in the field of microreactors for energy related topics. The main research efforts in this field are currently focussing on fuel processing as hydrogen source, mostly for distributed consumption through fuel cells. Catalyst development, reactor design and testing for reforming and removal of carbon monoxide through water-gas...
A reactor was built, experimentally studied and modelled having six bipolar electrodes placed between the terminal ones, all of them were RuO 2 /IrO 2 on a Ti sheet. The interelectrode gap was 1.5mm. Plastic plates were optionally arranged in the inlet and outlet to the electrodes to produce entrance or exit regions. The Laplace equation was numerically solved for the solution phase...
This work introduces a multi-objective optimization approach for the synthesis of batch water networks. In addition to concentration-based constraints, water characteristics and property-based constraints for the process sinks are considered. Since adjusting properties may require the use of hazardous chemicals, issues of process intensification to minimize the total volume of stored materials are...
The aim of this work is the experimental and theoretical characterization of the mass transfer in a membrane-based dense gas extraction of metal ions from aqueous solutions using a hollow fiber contactor. Extractions of Cu(II) were conducted in a single fiber membrane contactor operating under steady state conditions. Aqueous CuSO 4 solutions were treated using a CO 2 phase containing...
This article investigates the emptying process of a continuous powder mixer, from both experimental and modelling points of view. The apparatus used in this work is a pilot scale commercial mixer Gericke GCM500, for which a specific experimental protocol has been developed to determine the hold up in the mixer and the real outflow. We demonstrate that the dynamics of the process is governed by the...
A new approximate kinetic model, valid for both long and short duration of transient mass (or heat) transfer processes, was proposed. The presented model may be used in the cases of transient diffusion in bodies in the shape of infinite slab, infinite cylinder or sphere. The case where mass transfer resistance is both inside and outside a body (adsorbent pellet) has been considered. In the presented...
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