Reaction kinetics of the gas-phase Beckmann rearrangement of cyclohexanone oxime to e-caprolactam was studied over a NbOx/SiO2 catalyst in a fixed-bed reactor. Kinetic measurements were carried out by variation of cyclohexanone oxime partial pressure and reactor temperature in the range of 5 to 80 hPa and 360 to 420 degrees C, respectively. It was found that ethanol, used as solvent in addition to toluene, is essential for high catalytic performance. Reaction rates as a function of cyclohexanone oxime partial pressure display Langmuir-type behavior, but the results could not be interpreted satisfactorily on the basis of a Langmuir Hinshelwood mechanism. Another kinetic scheme is proposed, involving a kinetic adsorption step for cyclohexanone oxime instead of an adsorption equilibrium. Activation energies for the adsorption step and for the Beckmann rearrangement reaction were found to be 154 and 68 kJ.mol(-1), respectively. Substitution of ethanol by alcohols with longer chain length (e.g., n-hexanol) resulted in significantly higher e-caprolactam selectivities.

Research on greenhouse gas emission related to solid biofuels has focused mainly on the emissions from end use and the production chain. GHG emissions from the storage of forest chips have not received much attention in recent literature. In order for EU emission reduction targets to be fully understood, emissions from solid biofuel storage needs to be better described. Usually emissions from chip piles have been modelled using studies from organic waste composting but these two materials can differ appreciably; for example the C/N-ratio and moisture content.Herein, previous studies on greenhouse gas emissions from forest chips piles during storage are reviewed. The objective is to report on the methodology for measuring GHG emissions from organic waste composting in order to understand the suitability of applying the same methods for measuring emissions from woody biomass piles. (C) 2015 Elsevier Ltd. All rights reserved.

Torrefaction is an emerging technology which enables greater co-firing rates of biomass with coal. To date however there has been a lack of real production data from pilot-scale torrefaction plants. Without such data any environmental benefits of torrefied pellet production are difficult to quantify.In this study data on consumable inputs from a semi-industrial torrefaction plant and the physical properties of produced pellets are used to analyse energy input and air emissions of torrefied pellet production and product transport. EU sustainability criteria are used to compare CO2-equivalent emissions from torrefied and conventional pellet production starting from harvesting of logging residues to end use of co-firing the pellets with coal. A production scenario is examined in which raw material supply and production takes place in Finland with co-firing in Spain. The influence of transport distance (by lorry, rail and ship) on environmental impact is analysed for European and representative North American production sites.Results indicate about 4.5 GJ of energy is consumed for each tonne of torrefied pellets compared to 3.3 GJ for conventional pellets; representing 23% and 21% of the energy content of the pellets respectively. If electricity from renewable sources can be used, the fossil fuel fraction of input energy can be reduced to 37% and 41% respectively. Production and use of both pellet types in co-firing have similar environmental impact generating CO2-equivalent emissions from electricity in the range 43-45 g MJ(-1). An emission savings of 77% can be realised by co-firing torrefied pellets with fossil coal. Pellet production amounts correspond to 4.3 and 4.2 MJ generated electricity for each kilogram of feedstock (dry mass) and co-firing ratios (energy basis) in the range of 1.4-1.8%.If only one mode of product transport is used torrefied pellet production and co-firing is found to generate fewer emissions than its conventional counterpart when transport distance is niore than 400 km (lorry), 1850 km (rail) and 25,500 km (ship). (C) 2014 Elsevier Ltd. All rights reserved.

Chemie Ingenieur TechnikVolume 87, Issue 8 p. 1085-1086 Vortrag Axiale und radiale Temperaturmessungen in mehrphasigen Reaktionssystemen mittels faseroptischer Messtechnik C. Stegehake, Corresponding Author C. Stegehake stegehake@fluidvt.rub.de Ruhr-Universität Bochum, Lehrstuhl für Fluidverfahrenstechnik, Universitätsstraße 150, 44801 Bochum, DeutschlandRuhr-Universität Bochum, Lehrstuhl für Fluidverfahrenstechnik, Universitätsstraße 150, 44801 Bochum, DeutschlandSearch for more papers by this authorC. Hecht, C. Hecht Ruhr-Universität Bochum, Lehrstuhl für Fluidverfahrenstechnik, Universitätsstraße 150, 44801 Bochum, DeutschlandSearch for more papers by this authorN. Entesari, N. Entesari Ruhr-Universität Bochum, Lehrstuhl für Fluidverfahrenstechnik, Universitätsstraße 150, 44801 Bochum, DeutschlandSearch for more papers by this authorProf. Dr.-Ing. M. Grünewald, Prof. Dr.-Ing. M. Grünewald Ruhr-Universität Bochum, Lehrstuhl für Fluidverfahrenstechnik, Universitätsstraße 150, 44801 Bochum, DeutschlandSearch for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar TU Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, 44227 Dortmund, DeutschlandSearch for more papers by this author C. Stegehake, Corresponding Author C. Stegehake stegehake@fluidvt.rub.de Ruhr-Universität Bochum, Lehrstuhl für Fluidverfahrenstechnik, Universitätsstraße 150, 44801 Bochum, DeutschlandRuhr-Universität Bochum, Lehrstuhl für Fluidverfahrenstechnik, Universitätsstraße 150, 44801 Bochum, DeutschlandSearch for more papers by this authorC. Hecht, C. Hecht Ruhr-Universität Bochum, Lehrstuhl für Fluidverfahrenstechnik, Universitätsstraße 150, 44801 Bochum, DeutschlandSearch for more papers by this authorN. Entesari, N. Entesari Ruhr-Universität Bochum, Lehrstuhl für Fluidverfahrenstechnik, Universitätsstraße 150, 44801 Bochum, DeutschlandSearch for more papers by this authorProf. Dr.-Ing. M. Grünewald, Prof. Dr.-Ing. M. Grünewald Ruhr-Universität Bochum, Lehrstuhl für Fluidverfahrenstechnik, Universitätsstraße 150, 44801 Bochum, DeutschlandSearch for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar TU Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, 44227 Dortmund, DeutschlandSearch for more papers by this author First published: 28 July 2015 https://doi.org/10.1002/cite.201550021AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume87, Issue8Special Issue: Jahrestreffen der ProcessNet-Fachgemeinschaft Fluiddynamik und TrenntechnikAugust, 2015Pages 1085-1086 RelatedInformation

Chemie Ingenieur TechnikVolume 86, Issue 9 p. 1438-1438 PosterFree Access CO2-freie Energieerzeugung aus Methan J. González Rebordinos, Corresponding Author J. González Rebordinos Jesus.Gonzalez-Rebordinos@bci.tu-dortmund.de Technische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, GermanyTechnische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, Germany===Search for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar Technische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this author J. González Rebordinos, Corresponding Author J. González Rebordinos Jesus.Gonzalez-Rebordinos@bci.tu-dortmund.de Technische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, GermanyTechnische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, Germany===Search for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar Technische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this author First published: 28 August 2014 https://doi.org/10.1002/cite.201450057AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume86, Issue9Special Issue: ProcessNet-Jahrestagung 2014 und 31. DECHEMA-Jahrestagung der BiotechnologenSeptember, 2014Pages 1438-1438 RelatedInformation

Chemie Ingenieur TechnikVolume 86, Issue 9 p. 1606-1606 VortragFree Access Untersuchungen zum prozessinternen Recycling von Adsorptionswärmen durch Latentwärmespeicher bei der CO2-Adsorption J. F. Horstmeier, Corresponding Author J. F. Horstmeier Jan-Frederik.Horstmeier@bci.tu-dortmund.de Technische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, GermanyTechnische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, Germany===Search for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar Technische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this author J. F. Horstmeier, Corresponding Author J. F. Horstmeier Jan-Frederik.Horstmeier@bci.tu-dortmund.de Technische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, GermanyTechnische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, Germany===Search for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar Technische Universität Dortmund, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this author First published: 28 August 2014 https://doi.org/10.1002/cite.201450080AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. REFERENCES 1 J.-F. Horstmeier et al., Chem. Ing. Tech. 2014, 86 (1 – 2), 97. Volume86, Issue9Special Issue: ProcessNet-Jahrestagung 2014 und 31. DECHEMA-Jahrestagung der BiotechnologenSeptember, 2014Pages 1606-1606 ReferencesRelatedInformation

Chemie Ingenieur TechnikVolume 86, Issue 9 p. 1431-1432 VortragFree Access Power-to-Gas: Chemische Speicherung regenerativer Energie durch eine Sabatier-Reaktion Y. Qiao, Corresponding Author Y. Qiao yu.qiao@bci.tu-dortmund.de Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, GermanyTechnische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, Germany===Search for more papers by this authorJ. H. K. Haertel, J. H. K. Haertel Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, GermanySearch for more papers by this authorY. T. Voon, Y. T. Voon Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, GermanySearch for more papers by this authorR. Ortiz, R. Ortiz Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, GermanySearch for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, GermanySearch for more papers by this author Y. Qiao, Corresponding Author Y. Qiao yu.qiao@bci.tu-dortmund.de Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, GermanyTechnische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, Germany===Search for more papers by this authorJ. H. K. Haertel, J. H. K. Haertel Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, GermanySearch for more papers by this authorY. T. Voon, Y. T. Voon Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, GermanySearch for more papers by this authorR. Ortiz, R. Ortiz Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, GermanySearch for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl für Chemische Verfahrenstechnik, Emil-Figge-Straße 70, D-44227 Dortmund, GermanySearch for more papers by this author First published: 28 August 2014 https://doi.org/10.1002/cite.201450221AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. REFERENCES 1 M. Specht, Erdöl Erdgas Kohle 2010, 126 (10), 342. Volume86, Issue9Special Issue: ProcessNet-Jahrestagung 2014 und 31. DECHEMA-Jahrestagung der BiotechnologenSeptember, 2014Pages 1431-1432 ReferencesRelatedInformation

Torrefaction is currently of interest for the production of a new generation of fuel pellets suitable for increasing co-firing rates at pulverised-coal power plants. However, few results have been reported on properties of pellets which can currently be produced from torrefied materials. This data is required in order to evaluate the suitability of this fuel for its primary application.The objective of this study was to obtain measured results on storage and handling properties of pellets made of torrefied pine, logging residues (with and without wheat flour binder) and beech. Experimental methods, most of which adhere to standard procedures, are described. The measured properties include calorific value, bulk density, durability, hardness and equilibrium moisture content (EMC). Additionally, EMC isotherms of torrefied beech wood are presented. The results are analysed and their influence on the feasibility of large-scale pellet production is discussed. The measured and derived values presented will be of use in determining feasibility of torrefied pellet production in offsetting the use of fossil coal.From the results the following statements can be made regarding produced pellet samples:Feedstock choice has a strongly influence on properties of torrefied pellets.Durability of torrefied pellets is problematic compared to wood pellets.Outdoor heap storage of torrefied pellets is not recommended.Logging residues do not seem to be an optimal feedstock choice for torrefied pellets.Wheat flour does not appear suitable as binder for torrefied pellets production due to water absorption.Pelletising using high die temperature (above 170 degrees C) should be investigated. (C) 2014 Elsevier Ltd. All rights reserved.

Chemie Ingenieur TechnikVolume 86, Issue 9 p. 1634-1634 PosterFree Access Forschungskooperation entwickelt innovative Technologie zur umweltschonenden Herstellung von Synthesegas aus Kohlendioxid und Wasserstoff Dr. A. Bode, Corresponding Author Dr. A. Bode andreas.bode@basf.com BASF New Business GmbH, Benckiserplatz 1, D-67063 Ludwigshafen, GermanyBASF New Business GmbH, Benckiserplatz 1, D-67063 Ludwigshafen, Germany===Search for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this authorDr. K. Büker, Dr. K. Büker ThyssenKrupp Industrial Solutions AG, Friedrich-Uhde-Straße 15, D-44141 Dortmund, GermanySearch for more papers by this authorDr. V. Göke, Dr. V. Göke Linde AG, Seitnerstraße 70, D-82049 Pullach, GermanySearch for more papers by this authorDr. J. Schlichting, Dr. J. Schlichting Linde AG, Seitnerstraße 70, D-82049 Pullach, GermanySearch for more papers by this authorM. Hensmann, M. Hensmann VDEh-Betriebsforschungsinstitut GmbH, Sohnstraße 65, D-40237 Düsseldorf, GermanySearch for more papers by this authorDr. U. Janhsen, Dr. U. Janhsen ThyssenKrupp Steel Europe AG, Kaiser-Wilhelm-Straße 100, D-47166 Duisburg, GermanySearch for more papers by this authorDr. D. Klingler, Dr. D. Klingler BASF SE, Carl-Bosch-Straße 38, D-67056 Ludwigshafen, GermanySearch for more papers by this authorDr. S. A. Schunk, Dr. S. A. Schunk hte AG, Kurpfalzring 104, D-69123 Heidelberg, GermanySearch for more papers by this author Dr. A. Bode, Corresponding Author Dr. A. Bode andreas.bode@basf.com BASF New Business GmbH, Benckiserplatz 1, D-67063 Ludwigshafen, GermanyBASF New Business GmbH, Benckiserplatz 1, D-67063 Ludwigshafen, Germany===Search for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this authorDr. K. Büker, Dr. K. Büker ThyssenKrupp Industrial Solutions AG, Friedrich-Uhde-Straße 15, D-44141 Dortmund, GermanySearch for more papers by this authorDr. V. Göke, Dr. V. Göke Linde AG, Seitnerstraße 70, D-82049 Pullach, GermanySearch for more papers by this authorDr. J. Schlichting, Dr. J. Schlichting Linde AG, Seitnerstraße 70, D-82049 Pullach, GermanySearch for more papers by this authorM. Hensmann, M. Hensmann VDEh-Betriebsforschungsinstitut GmbH, Sohnstraße 65, D-40237 Düsseldorf, GermanySearch for more papers by this authorDr. U. Janhsen, Dr. U. Janhsen ThyssenKrupp Steel Europe AG, Kaiser-Wilhelm-Straße 100, D-47166 Duisburg, GermanySearch for more papers by this authorDr. D. Klingler, Dr. D. Klingler BASF SE, Carl-Bosch-Straße 38, D-67056 Ludwigshafen, GermanySearch for more papers by this authorDr. S. A. Schunk, Dr. S. A. Schunk hte AG, Kurpfalzring 104, D-69123 Heidelberg, GermanySearch for more papers by this author First published: 28 August 2014 https://doi.org/10.1002/cite.201450286Citations: 1AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article.Citing Literature Volume86, Issue9Special Issue: ProcessNet-Jahrestagung 2014 und 31. DECHEMA-Jahrestagung der BiotechnologenSeptember, 2014Pages 1634-1634 RelatedInformation

Bio-coal has received generous amounts of media attention because it potentially allows greater biomass co-firing rates and net CO2 emission reductions in pulverised-coal power plants. However, little scientific research has been published on the feasibility of full-scale commercial production of bio-coal. Despite this, several companies and research organisations worldwide have been developing patented bio-coal technologies. Are the expectations of bio-coal realistic and are they based on accepted scientific data? This paper examines strictly peer-reviewed scientific publications in order to find an answer. The findings to date on three key properties of torrefied biomass are presented and reviewed. These properties are: the mass and energy balance of torrefaction, the friability of the product and the equilibrium moisture content of torrefied biomass. It is these properties that will have a major influence on the feasibility of bio-coal production regardless of reactor technology employed in production. The presented results will be of use in modelling commercial production of bio-coal in terms of economics and green-house gas emission balance.

Chemie Ingenieur TechnikVolume 84, Issue 8 p. 1395-1395 VortragFree Access Mess- und Regelkonzepte für die Parallelisierung von Mehrphasenströmungen in Mikrokapillarreaktoren N. Antweiler, Corresponding Author N. Antweiler nicolai.antweiler@bci.tu-dortmund.de Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanyTechnische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this authorF. Kaske, F. Kaske Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this author N. Antweiler, Corresponding Author N. Antweiler nicolai.antweiler@bci.tu-dortmund.de Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanyTechnische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this authorF. Kaske, F. Kaske Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this authorProf. Dr. D. W. Agar, Prof. Dr. D. W. Agar Technische Universität Dortmund, Fakultät Bio- und Chemieingenieurwesen, Lehrstuhl Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this author First published: 25 July 2012 https://doi.org/10.1002/cite.201250199AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume84, Issue8Special Issue: ProcessNet‐Jahrestagung 2012 und 30. Jahrestagung der BiotechnologenAugust, 2012Pages 1395-1395 RelatedInformation

The potential and problems of conducting a free radical polymerisation in parallel capillary reactors are presented. By operating in the so-called slug flow regime of immiscible liquid-liquid flow, one can achieve perfectly uniform residence times which are inaccessible using single phase flow. The excellent performance available in microreactors can be exploited for higher throughputs through the simple expedient of numbering-up, i.e. operation of multiple similar reactors in parallel under identical hydrodynamic conditions. In practice this approach often comes to grief on the coupling between hydrodynamics and chemical reaction, for example due to the strong influence of polymerisation on viscosity. Rigorous modeling reveals that the operating conditions sought are actually unstable. Furthermore, the uniformity of flow distribution between parallel capillaries was found to be very sensitive to the manufacturing tolerances of the capillaries used in the presence of polymerisation. Two strategies for resolving such problems are discussed. In the first case, coupling between reaction and the flow distribution is suppressed by a sufficiently high pressure drop upstream of the temperature regulated reactor segments. The pressure drop necessary to achieve this decoupling was estimated by the model. An alternative technique involves an appropriately inexpensive flow control system for each individual capillary. Since commercially available microvalves and flow measurement equipment are too costly for parallelisation purposes, it is necessary to develop new components to fulfill these functions. An optical monitoring technique is presented that meets both the technical and economic criteria, and which can be readily combined with recently developed new micro valves ([1]).

AbstractFür eine praktische Auslegung von Blasensäulen im (halb)technischen Maßstab existieren in der Fachliteratur bisher nur wenige Reaktormodelle. Durch Implementierung eines eindimensionalen Modells in die gleichungsorientierte Simulationssoftware ASPEN Custom ModelerTM wird ein Kompromiss aus Modellgenauigkeit und Berechnungsaufwand erreicht. Die Vorgänge in einem Blasensäulenreaktor werden mit hinreichender Genauigkeit quantitativ beschrieben.

Anhand der Nitrierung von Benzol wird die Steigerung von Umsatz und Selektivitat in mehreren Mikroreaktorstufen mit unterschiedlicher Konzentrationsfuhrung untersucht. Im Gegenstrom wird im Vergleich zum Gleichstrom ein hoherer Umsatz des Benzols bei stochiometrischem Verhaltnis erzielt. Durch Verschaltung der Nitriersaure im Kreuzstrom wird eine erhebliche Verminderung der Dinitrobenzole beobachtet.

Suspended catalyst particles in two phase slug flow could be an alternative technique for using heterogeneous catalysts in microreactors, which has so far mainly been restricted to immobilised solid catalysts, either in micro-fixed-beds or catalytically coated wall reactors. The hydrodynamic and particle behaviour in slug flow was analysed using fluorescent particles and particles of typical catalyst supports in various biphasic liquid–liquid systems. Typically, the circulations only encompassed the anterior section of the slug and depended on the properties of the liquid–liquid system and, in particular, on the slug velocity. Silicon dioxide or aluminum oxide particles suspended in the aqueous phase follow the internal circulation streamlines almost exactly, while carbon-based particles suspended in the continuous organic phase formed a contiguous cap around the rear end of the dispersed aqueous slug. The principle of suspension catalysis was demonstrated experimentally for a heterogeneous catalytic transfer hydrogenation of m-nitrotoluene with aqueous potassium formate.

Chemie Ingenieur TechnikVolume 82, Issue 9 p. 1330-1331 PosterFree Access Selektivitätsuntersuchungen beim Hochdruck-Aqueous-Phase-Reforming T. Bludowsky, T. Bludowsky thomas.bludowsky@bci.tu-dortmund.de TU Dortmund, Lehrstuhl für Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this authorJ. Pfaff, J. Pfaff TU Dortmund, Lehrstuhl für Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this authorD. W. Agar Prof., D. W. Agar Prof. TU Dortmund, Lehrstuhl für Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this author T. Bludowsky, T. Bludowsky thomas.bludowsky@bci.tu-dortmund.de TU Dortmund, Lehrstuhl für Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this authorJ. Pfaff, J. Pfaff TU Dortmund, Lehrstuhl für Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this authorD. W. Agar Prof., D. W. Agar Prof. TU Dortmund, Lehrstuhl für Technische Chemie B, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this author First published: 27 August 2010 https://doi.org/10.1002/cite.201050199AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume82, Issue9Special Issue: ProcessNet-Jahrestagung 2010 und 28. Jahrestagung der BiotechnologenSeptember, 2010Pages 1330-1331 ReferencesRelatedInformation

Chemie Ingenieur TechnikVolume 82, Issue 9 p. 1314-1314 ÜbersichtsvortragFree Access Nicht-katalytische Gas-/Feststoff-Reaktionen – Modellierung und Messtechnik D. W. Agar Prof. Dr., D. W. Agar Prof. Dr. david.agar@bci.tu-dortmund.de Technische Universität Dortmund, Lehrstuhl für Technische Chemie B, Fakultät Bio-und Chemieingenieurwesen, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this author D. W. Agar Prof. Dr., D. W. Agar Prof. Dr. david.agar@bci.tu-dortmund.de Technische Universität Dortmund, Lehrstuhl für Technische Chemie B, Fakultät Bio-und Chemieingenieurwesen, Emil-Figge-Straße 66, D-44227 Dortmund, GermanySearch for more papers by this author First published: 27 August 2010 https://doi.org/10.1002/cite.201050732AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume82, Issue9Special Issue: ProcessNet‐Jahrestagung 2010 und 28. Jahrestagung der BiotechnologenSeptember, 2010Pages 1314-1314 RelatedInformation

Chemie Ingenieur TechnikVolume 82, Issue 9 p. 1401-1402 PosterFree Access Performance and Stability of Novel Biphasic Amine Absorbents for CO2 Capture J. Zhang M. Sc., J. Zhang M. Sc. jiafei.zhang@udo.edu Technische Universität Dortmund, Technische Chemie B, Emil-Figge-Straße 66, D-44221 Dortmund, GermanySearch for more papers by this authorO. Nwani Dipl.-Ing., O. Nwani Dipl.-Ing. Technische Universität Dortmund, Technische Chemie B, Emil-Figge-Straße 66, D-44221 Dortmund, GermanySearch for more papers by this authorJ. Chen B. Sc., J. Chen B. Sc. Technische Universität Dortmund, Technische Chemie B, Emil-Figge-Straße 66, D-44221 Dortmund, GermanySearch for more papers by this authorR. Misch B. Sc., R. Misch B. Sc. Technische Universität Dortmund, Technische Chemie B, Emil-Figge-Straße 66, D-44221 Dortmund, GermanySearch for more papers by this authorD. W. Agar Prof. Dr.-Ing., D. W. Agar Prof. Dr.-Ing. Technische Universität Dortmund, Technische Chemie B, Emil-Figge-Straße 66, D-44221 Dortmund, GermanySearch for more papers by this author J. Zhang M. Sc., J. Zhang M. Sc. jiafei.zhang@udo.edu Technische Universität Dortmund, Technische Chemie B, Emil-Figge-Straße 66, D-44221 Dortmund, GermanySearch for more papers by this authorO. Nwani Dipl.-Ing., O. Nwani Dipl.-Ing. Technische Universität Dortmund, Technische Chemie B, Emil-Figge-Straße 66, D-44221 Dortmund, GermanySearch for more papers by this authorJ. Chen B. Sc., J. Chen B. Sc. Technische Universität Dortmund, Technische Chemie B, Emil-Figge-Straße 66, D-44221 Dortmund, GermanySearch for more papers by this authorR. Misch B. Sc., R. Misch B. Sc. Technische Universität Dortmund, Technische Chemie B, Emil-Figge-Straße 66, D-44221 Dortmund, GermanySearch for more papers by this authorD. W. Agar Prof. Dr.-Ing., D. W. Agar Prof. Dr.-Ing. Technische Universität Dortmund, Technische Chemie B, Emil-Figge-Straße 66, D-44221 Dortmund, GermanySearch for more papers by this author First published: 27 August 2010 https://doi.org/10.1002/cite.201050523AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume82, Issue9Special Issue: ProcessNet-Jahrestagung 2010 und 28. Jahrestagung der BiotechnologenSeptember, 2010Pages 1401-1402 RelatedInformation