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Wendelsheim, Germany

Grunewald M.,Ruhr University Bochum | Heck J.,Ehrfeld Mikrotechnik BTS GmbH
Chemie-Ingenieur-Technik | Year: 2015

Modular process engineering, e.g., container plants, opens interesting new perspectives for production plants of chemical and pharmaceutical processes. Modular micro and millireactors for container plants are actually in the phase of being introduced or established in the market of process technologies. Reference examples in production scale are still missing. The technology platform of micro and millireactors fulfills the demands of container plants. This is demonstrated for selected equipment. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Biessey P.,Ruhr University Bochum | Biessey P.,Ehrfeld Mikrotechnik BTS GmbH | Grunewald M.,Ruhr University Bochum
Chemical Engineering and Technology | Year: 2015

An apparatus with rectangular product channels and static mixing elements for process intensification is investigated in terms of heat transfer and hydrodynamics. Herringbone-like static mixing elements increase the overall heat transfer coefficient significantly, and the stall angle was found to have a major influence on hydrodynamics and heat transfer. The knowledge of structural parameters of the mixing elements is crucial for apparatus design and prediction of the apparatus performance. A method to derive mean structural parameters from experimental results is presented. Reactors on a milli-scale open the possibility to develop modular equipment that allows for flexible production. An apparatus with rectangular product channels and mixing elements for process intensification is investigated in terms of hydrodynamics and heat transfer. The apparatus performs competitively with established reactor concepts and is, thus, an alternative for modular production units. Copyright © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Borovinskaya E.S.,TU Dresden | Uvarov V.M.,Saint Petersburg State University | Schael F.,Ehrfeld Mikrotechnik BTS GmbH | De Vekki D.A.,Saint Petersburg State University | Reschetilowski W.,TU Dresden
Reaction Kinetics, Mechanisms and Catalysis | Year: 2011

The Rh-catalyzed hydrosilylation of acetophenone in the presence of [Rh(CO)2(μ-Cl)]2 and [Rh(COD)Cl]2 complexes, as well as with an in situ addition of nitrogen-containing derivatives of mono- and bicyclic terpenes was investigated in a flow microreactor and in a batch reactor. Kinetic modeling, reaction equilibrium analysis and multi-criteria optimization of the process were applied to compare the performances of the reactors. In general, the highest catalytic activity was reached in the presence of [Rh(COD)Cl]2 and [Rh(CO)2(μ-Cl)]2 without the addition of amines. The best reaction selectivity towards 1-phenylethanol silyl ether with the [Rh(CO)2(μ-Cl)]2 complex was observed in the microreactor. The addition of (R)-(-)-cis- MyrtNH2 and (R)-(+)-BornylNH2 amines, as well as an increase of the amine-to-rhodium molar ratio significantly decreased the conversion and selectivity in both reactors. In this connection, the [Rh(COD)Cl]2 complex demonstrated a better catalytic performance in all cases. The application of the flow microreactor promoted another elementary reaction pathway due to micromixing effects. © AkadÉmiai KiadÓ, Budapest, Hungary 2011.

Ehrfeld Mikrotechnik BTS GmbH | Date: 2010-02-23

Scalable compact static mixer comprising a rotationally symmetrical cascaded mixing structure.

Ehrfeld Mikrotechnik BTS GmbH | Date: 2010-05-05

Device for carrying out photochemical processes on a microscale and use of the device for photochemical reactions and culturing photosynthesizing cells and/or microorganisms.

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