Chemical Engineering & Technology

Cover image for Vol. 35 Issue 7

Special Issue: Reactor Design & Process Intensification

July, 2012

Volume 35, Issue 7

Pages 1111–1323

Issue edited by: Jean-Claude Charpentier

  1. Cover Picture

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Editorial
    7. Forum
    8. Scientific Highlights
    9. Reviews
    10. Research Articles
    11. Overview
    1. You have free access to this content
      Cover Chem. Eng. Technol. 7/2012

      Article first published online: 26 JUN 2012 | DOI: 10.1002/ceat.201290038

  2. Editorial Board

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Editorial
    7. Forum
    8. Scientific Highlights
    9. Reviews
    10. Research Articles
    11. Overview
    1. Editorial Board Chem. Eng. Technol. 7/2012

      Article first published online: 26 JUN 2012 | DOI: 10.1002/ceat.201290039

  3. Overview

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Editorial
    7. Forum
    8. Scientific Highlights
    9. Reviews
    10. Research Articles
    11. Overview
    1. Overview Contents: Chem. Eng. Technol. 7/2012 (page 1111)

      Article first published online: 26 JUN 2012 | DOI: 10.1002/ceat.201290040

  4. Contents

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Editorial
    7. Forum
    8. Scientific Highlights
    9. Reviews
    10. Research Articles
    11. Overview
    1. You have free access to this content
      Contents: Chem. Eng. Technol. 7/2012 (pages 1112–1117)

      Article first published online: 26 JUN 2012 | DOI: 10.1002/ceat.201290041

  5. Editorial

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Editorial
    7. Forum
    8. Scientific Highlights
    9. Reviews
    10. Research Articles
    11. Overview
    1. You have free access to this content
  6. Forum

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Editorial
    7. Forum
    8. Scientific Highlights
    9. Reviews
    10. Research Articles
    11. Overview
    1. Forum: Chem. Eng. Technol. 7/2012 (pages 1120–1121)

      Article first published online: 26 JUN 2012 | DOI: 10.1002/ceat.201290043

  7. Scientific Highlights

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Editorial
    7. Forum
    8. Scientific Highlights
    9. Reviews
    10. Research Articles
    11. Overview
    1. Scientific Highlights: Chem. Eng. Technol. 7/2012 (pages 1122–1123)

      Article first published online: 26 JUN 2012 | DOI: 10.1002/ceat.201290044

  8. Reviews

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Editorial
    7. Forum
    8. Scientific Highlights
    9. Reviews
    10. Research Articles
    11. Overview
    1. Process Intensification in Stirred Tanks (pages 1125–1132)

      J. Wu, B. Nguyen, G. Lane, S. Wang, R. Parthasarathy and L. J. Graham

      Article first published online: 5 JUN 2012 | DOI: 10.1002/ceat.201100712

      Thumbnail image of graphical abstract

      The concept of process intensification is extended to include innovations leading to a significantly increased throughput for processing reactors. Operating at high solids concentrations in processing tanks is recommended. The agitation power constraint can be overcome by removal of baffles. Solutions for mass transfer limiting problems, poor mixing, and reduction of the tank downtime are summarized.

    2. Multiscale Aspects of Modeling Gas-Phase Nanoparticle Synthesis (pages 1133–1143)

      B. Buesser and A. J. Gröhn

      Article first published online: 8 JUN 2012 | DOI: 10.1002/ceat.201100723

      Thumbnail image of graphical abstract

      Recent developments of models and simulations at multiple length and time scales for the design of aerosol reactors synthesizing nanoparticles are reviewed. As a background, the various aerosol reactor types and gas-phase particle dynamics are introduced. Models are presented with decreasing time and length scales in sections on continuum, mesoscale, molecular dynamics, and quantum mechanics models.

    3. Highlights of Photochemical Reactions in Microflow Reactors (pages 1144–1152)

      M. Oelgemoeller

      Article first published online: 12 MAR 2012 | DOI: 10.1002/ceat.201200009

      Thumbnail image of graphical abstract

      Following the famous Lab on a chip approach, synthetic organic photochemistry has also been miniaturized. The combination of microscopic dimensions and flow conditions offers exciting advantages for photochemical reactions. Using selected highlights from the literature, this review aims to demonstrate the superiority of microflow photochemistry over conventional batch techniques.

    4. Semicontinuous Thermal Separation Systems (pages 1153–1170)

      T. A. Adams II and A. Pascall

      Article first published online: 8 JUN 2012 | DOI: 10.1002/ceat.201200048

      Thumbnail image of graphical abstract

      A comprehensive overview on the progress of seven different semicontinuous processes for the separation of chemical mixtures is presented. Control and operational strategies as well as heuristics for modeling, simulation, and optimization issues are discussed. Within inter-mediate production rates, semi-continuous separations proved to be more economical when compared to batch and continuous separations.

    5. Chromatographic Reactors (pages 1171–1183)

      A. E. Rodrigues, C. S. M. Pereira and J. C. Santos

      Article first published online: 2 MAY 2012 | DOI: 10.1002/ceat.201100696

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      Process intensification by using chromatographic reactors, more specifically the simulated moving-bed reactor and the pressure swing adsorptive reactor, is discussed with examples from liquid phase and gas phase processes, covering different areas from green to petrochemical products.

    6. Potential Analysis of Smart Flow Processing and Micro Process Technology for Fastening Process Development: Use of Chemistry and Process Design as Intensification Fields (pages 1184–1204)

      V. Hessel, I. Vural Gürsel, Q. Wang, T. Noël and J. Lang

      Article first published online: 8 JUN 2012 | DOI: 10.1002/ceat.201200038

      Thumbnail image of graphical abstract

      Flow processing and micro process technology can simplify the process design and shorten the process development time. This is achieved by utilizing three fields of process intensification, namely transport, chemical, and process design intensification and use of modern compact plant environments (Future Factories). An overview of the process intensification fields and their influence on the whole process development cycle is given.

  9. Research Articles

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Editorial
    7. Forum
    8. Scientific Highlights
    9. Reviews
    10. Research Articles
    11. Overview
    1. Design of a Plate-Type Catalytic Microreactor with CO2 Permeation Membrane for Water-Gas Shift Reaction (pages 1205–1213)

      T. Fukuda, T. Maki and K. Mae

      Article first published online: 3 MAY 2012 | DOI: 10.1002/ceat.201100599

      Thumbnail image of graphical abstract

      A simple method for designing a microchannel membrane reactor with a CO2-selective permeation membrane and a low-temperature activity catalyst is proposed and applied to the water-gas shift reaction. It was validated by comparing to a detailed model obtained by CFD. The performance of this reactor was excellent. An improved reaction rate could be achieved by keeping a low membrane temperature.

    2. Rapid Production of Biodiesel in Mesoscale Oscillatory Baffled Reactors (pages 1214–1220)

      A. N. Phan, A. P. Harvey and V. Eze

      Article first published online: 31 MAY 2012 | DOI: 10.1002/ceat.201200031

      Thumbnail image of graphical abstract

      In order to produce biodiesel at an industrially acceptable level of conversion within a short residence time, continuous alkali-catalyzed transesterification of rapeseed oil with methanol was performed in three mesoreactor designs, i.e., integral, wire wool, and helical baffle. A combination of high catalyst concentration and good mixing was required.

    3. Design of a Pervaporation Photocatalytic Reactor for Process Intensification (pages 1221–1228)

      G. Camera-Roda and F. Santarelli

      Article first published online: 5 JUN 2012 | DOI: 10.1002/ceat.201100687

      Thumbnail image of graphical abstract

      Integrated photocatalysis-pervaporation processes are easy to be implemented for both water detoxification and green synthesis of fine chemicals and give significant process intensification. However, the correct design of these integrated processes is essential to reach the maximum performances.

    4. Micromixing Characteristics in a Small-Scale Spinning Disk Reactor (pages 1229–1237)

      K. V. K. Boodhoo and S. R. Al-Hengari

      Article first published online: 29 MAY 2012 | DOI: 10.1002/ceat.201100695

      Thumbnail image of graphical abstract

      The micromixing efficiency in a 10 cm spinning disk reactor (SDR) has been investigated by means of the iodide-iodide test reaction. The SDR exhibits improved micromixing performance under optimized conditions as compared with other reactor configurations. The results highlight the potential of the SDR as an alternative intensified mixer/reactor for processes where a high degree of mixing is imperative.

    5. Process Intensification by Membrane Reactors: High-Temperature Water Gas Shift Reaction as Single Stage for Syngas Upgrading (pages 1238–1248)

      A. Brunetti, A. Caravella, E. Drioli and G. Barbieri

      Article first published online: 3 MAY 2012 | DOI: 10.1002/ceat.201100641

      Thumbnail image of graphical abstract

      The performance of a Pd-based membrane reactor (MR) operated in the high-temperature range for upgrading of a syngas mixture was simulated and compared with the traditional process used industrially for this reaction stage. Two reactors of a traditional process can be replaced by one MR and less and smaller unit operations are required.

    6. A Microplasma Reactor for Chemical Process Intensification (pages 1249–1256)

      P. J. Lindner and R. S. Besser

      Article first published online: 3 MAY 2012 | DOI: 10.1002/ceat.201100684

      Thumbnail image of graphical abstract

      Kinetic modeling of microplasma reforming reactions has provided experimental settings to achieve an energy-efficient system. By reducing the bulk volume and setting the flow rate to an optimal value, an energy efficiency of approximately 200 % can be reached, allowing for a self-sustaining microplasma reformer-fuel cell system.

    7. Beckmann Rearrangement of Cyclohexanone Oxime to ϵ-Caprolactam in a Microreactor (pages 1257–1261)

      N. T. Zuidhof, M. H. J. M. de Croon, J. C. Schouten and J. T. Tinge

      Article first published online: 23 FEB 2012 | DOI: 10.1002/ceat.201100550

      Thumbnail image of graphical abstract

      Selectivity and conversion of the sulfuric acid-catalyzed Beckmann rearrangement of cyclohexanone oxime, dissolved in cyclooctane, to ϵ-caprolactam are determined in a microreactor consisting of a low-temperature mixing zone followed by a high-temperature reaction zone. Under these conditions, with a residence time of the reactants of just ∼10 s, complete conversion and a selectivity of 99 % are found.

    8. A Systems Approach for Process Simplification through Process Integration (pages 1262–1272)

      M. Gopalakrishnan, J. M. Ponce-Ortega and M. M. El-Halwagi

      Article first published online: 12 MAR 2012 | DOI: 10.1002/ceat.201100605

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      A new systematic approach to process simplification is presented. The objective is to convert the raw materials to products in the least number of processing steps. This involves choosing the proper technologies, unit type, unit size, operating conditions, and materials. A methylethylketone process is used as a case study to demonstrate the benefits of applying the proposed process simplification approach.

    9. Process Intensification of Emulsion Polymerization Using a Compartment Reactor (pages 1273–1280)

      N. Ohmura, T. Horie, N. Kumagai, T. Esaki and T. Yamazaki

      Article first published online: 8 JUN 2012 | DOI: 10.1002/ceat.201200034

      Thumbnail image of graphical abstract

      A compartment reactor consisting of three well-mixing compartments was used to intensify continuous emulsion polymerization. The compartment reactor obtained much higher monomer conversion and also more stable and monodisperse particles than a single continuous stirred-tank reactor. The oscillations of the mean particle size were greatly suppressed by spatially different mixing operations.

    10. Chemical Looping Dry Reforming as Novel, Intensified Process for CO2 Activation (pages 1281–1290)

      S. Bhavsar, M. Najera and G. Veser

      Article first published online: 5 JUN 2012 | DOI: 10.1002/ceat.201100649

      Thumbnail image of graphical abstract

      Chemical looping dry reforming (CLDR) is a novel process for CO2 utilization via conversion to CO over Fe-based oxygen carrier materials. Nanostructured carriers yield high reactivity, but the oxide matrix has crucial impact on carrier stability and performance. Remarkably, a modification of the basic process via a two-step carrier oxidation renders CLDR net exothermic, thus enabling a highly intensified, autothermal process for CO2 activation.

    11. Numerical Study of Split T-Micromixers (pages 1291–1299)

      M. Roudgar, E. Brunazzi, C. Galletti and R. Mauri

      Article first published online: 12 JUN 2012 | DOI: 10.1002/ceat.201100611

      Thumbnail image of graphical abstract

      The liquid flow inside split T-type micromixers was studied by performing three-dimensional numerical simulations. The effects of various operating and design parameters on the mixing process were investigated. In general, at a given flow rate, vertical splits induce a much better mixing than horizontal splits, while the reverse may occur for strongly unequal inlet flow rates.

    12. Dispersion Characteristics and Mass Transfer in a Pilot-Scale Gas-Liquid Oscillatory-Plate Column (pages 1300–1311)

      H. G. Gomaa, N. Hashem and A. M. Al-Taweel

      Article first published online: 26 JUN 2012 | DOI: 10.1002/ceat.201100655

      Thumbnail image of graphical abstract

      Intensification of gas-liquid contacting characteristics and mass transfer was achieved using a pilot-scale gas-liquid oscillatory plate column. Out-of-phase oscillations of plates with small hole diameter at high frequencies and small amplitudes resulted in significant increases in gas throughputs, interfacial areas, and mass transfer rates with low base pressure oscillations. The results are correlated in terms of energy dissipation rate.

    13. Microfluidic Solvent Extraction of Metal Ions and Complexes from Leach Solutions Containing Nanoparticles (pages 1312–1319)

      C. Priest, J. Zhou, S. Klink, R. Sedev and J. Ralston

      Article first published online: 26 JUN 2012 | DOI: 10.1002/ceat.201100602

      Thumbnail image of graphical abstract

      Microfluidic solvent extraction is explored as an alternative to bulk extractions for copper, leached from copper oxide ore, and chromium, leached from three chromite ore samples. Our approach bypasses the dispersion of droplets, enabling processing of leach solutions with high fine particle concentrations. The results have implications for processing complex solutions in industry.

  10. Overview

    1. Top of page
    2. Cover Picture
    3. Editorial Board
    4. Overview
    5. Contents
    6. Editorial
    7. Forum
    8. Scientific Highlights
    9. Reviews
    10. Research Articles
    11. Overview
    1. You have free access to this content
      Overview Contents: Chemie Ingenieur Technik 7/2012 (page 1323)

      Article first published online: 26 JUN 2012 | DOI: 10.1002/ceat.201290045

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