Academic literature on the topic 'Chemical reactors'

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Journal articles on the topic "Chemical reactors"

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Abbas, Sarah A., Adel A. Eidan, and Assaad Al Sahlani. "Solar Reactor Review." International Journal of Heat and Technology 40, no. 3 (June 30, 2022): 671–84. http://dx.doi.org/10.18280/ijht.400303.

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This research paper presents a detailed review of the recent advances concerned with carrying out efficient solar chemical reactions by reviewing the most recent reactors available in the literature that use solid-gas reactions or pyrolysis processes. Major research groups in solar chemistry design and manufacture a wide range of solar reactor configurations, widths, and sizes, including directly radioactive particles. Solar reactors heat up to 1000℃ and can be utilized to store chemical thermal energy in concentrated solar power facilities (CSP). Reactor efficiency is better in bed reactors notably in rotating pyrolysis, fluidized bed reactors with solid gas, and fixed-bed reactor systems. Finally, their description, schematics, and key performance parameters are presented for chemical reactions.
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Slavnic, Danijela, Branko Bugarski, and Nikola Nikacevic. "Oscillatory flow chemical reactors." Chemical Industry 68, no. 3 (2014): 363–79. http://dx.doi.org/10.2298/hemind130419062s.

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Global market competition, increase in energy and other production costs, demands for high quality products and reduction of waste are forcing pharmaceutical, fine chemicals and biochemical industries, to search for radical solutions. One of the most effective ways to improve the overall production (cost reduction and better control of reactions) is a transition from batch to continuous processes. However, the reactions of interests for the mentioned industry sectors are often slow, thus continuous tubular reactors would be impractically long for flow regimes which provide sufficient heat and mass transfer and narrow residence time distribution. The oscillatory flow reactors (OFR) are newer type of tube reactors which can offer solution by providing continuous operation with approximately plug flow pattern, low shear stress rates and enhanced mass and heat transfer. These benefits are the result of very good mixing in OFR achieved by vortex generation. OFR consists of cylindrical tube containing equally spaced orifice baffles. Fluid oscillations are superimposed on a net (laminar) flow. Eddies are generated when oscillating fluid collides with baffles and passes through orifices. Generation and propagation of vortices create uniform mixing in each reactor cavity (between baffles), providing an overall flow pattern which is close to plug flow. Oscillations can be created by direct action of a piston or a diaphragm on fluid (or alternatively on baffles). This article provides an overview of oscillatory flow reactor technology, its operating principles and basic design and scale - up characteristics. Further, the article reviews the key research findings in heat and mass transfer, shear stress, residence time distribution in OFR, presenting their advantages over the conventional reactors. Finally, relevant process intensification examples from pharmaceutical, polymer and biofuels industries are presented.
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Zsembinszki, Gabriel, Aran Solé, Camila Barreneche, Cristina Prieto, A. Fernández, and Luisa Cabeza. "Review of Reactors with Potential Use in Thermochemical Energy Storage in Concentrated Solar Power Plants." Energies 11, no. 9 (September 6, 2018): 2358. http://dx.doi.org/10.3390/en11092358.

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The aim of this study is to perform a review of the state-of-the-art of the reactors available in the literature, which are used for solid–gas reactions or thermal decomposition processes around 1000 °C that could be further implemented for thermochemical energy storage in CSP (concentrated solar power) plants, specifically for SPT (solar power tower) technology. Both direct and indirect systems can be implemented, with direct and closed systems being the most studied ones. Among direct and closed systems, the most used configuration is the stacked bed reactor, with the fixed bed reactor being the most frequent option. Out of all of the reactors studied, almost 70% are used for solid–gas chemical reactions. Few data are available regarding solar efficiency in most of the processes, and the available information indicates relatively low values. Chemical reaction efficiencies show better values, especially in the case of a fluidized bed reactor for solid–gas chemical reactions, and fixed bed and rotary reactors for thermal decompositions.
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Diver, R. B. "Receiver/Reactor Concepts for Thermochemical Transport of Solar Energy." Journal of Solar Energy Engineering 109, no. 3 (August 1, 1987): 199–204. http://dx.doi.org/10.1115/1.3268206.

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Thermochemical transport of solar energy based on reversible chemical reactions may be a way to take advantage of the high-temperature capabilities of parabolic dishes, while minimizing pipe network heat loss, since energy is transported at ambient temperatures in chemical form. Receiver/Reactor design is a key to making thermochemical transport a reality. In this paper the important parameters for solar receiver and chemical reactor design and how they relate to each other are presented. Three basic receiver/reactor types, applicable to thermochemical receiver design, are identified: (1) Tube Receiver/Reactors have tubular reactor elements which are directly heated by solar energy in the receiver. (2) Indirect Receiver/Reactors use an intermediate heat transfer fluid between the receiver and reactor. (3) Direct Absorption Receiver/Reactors absorb sunlight directly on the reactor catalyst. Advantages, limitations, and risks associated with each design are discussed and examples of those that have been built are given. Each type offers its own set of advantages and risks, and warrant further investigation.
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Hoff, Axel A., Hans H. Diebner, and Gerold Baierc. "Reversible Control of Chemical Reaction Systems." Zeitschrift für Naturforschung A 50, no. 12 (December 1, 1995): 1141–46. http://dx.doi.org/10.1515/zna-1995-1214.

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Abstract Starting from an algorithm for continuous chaos control, a reversible control method based on mutual diffusive coupling of chemical reactors is developed. With sufficient coupling strength, the proposed mutual coupling leads to control even if both reactors are of similar size. The controlling and controlled reactor exchange their roles at a certain size ratio. Insufficient coupling can lead to a more complex dynamics than that of the uncoupled reactors. This method for control via reversible coupling of chemical reactors should be implementable on a purely microscopic level.
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Taghizadeh, Majid, and Fatemeh Aghili. "Recent advances in membrane reactors for hydrogen production by steam reforming of ethanol as a renewable resource." Reviews in Chemical Engineering 35, no. 3 (March 26, 2019): 377–92. http://dx.doi.org/10.1515/revce-2017-0083.

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AbstractDuring the last decade, hydrogen has attracted lots of interest due to its potential as an energy carrier. Ethanol is one of the renewable resources that can be considered as a sustainable candidate for hydrogen generation. In this regard, producing hydrogen from ethanol steam reforming (ESR) would be an environmentally friendly process. Commonly, ESR is performed in packed bed reactors; however, this process needs several stages for hydrogen separation with desired purity. Recently, the concept of a membrane reactor, an attractive device integrating catalytic reactions and separation processes in a single unit, has allowed obtaining a smaller reactor volume, higher conversion degrees, and higher hydrogen yield in comparison to conventional reactors. This paper deals with recent advances in ESR in terms of catalyst utilization and the fundamental of membranes. The main part of this paper discusses the performance of different membrane reactor configurations, mainly packed bed membrane reactors, fluidized bed membrane reactors, and micro-membrane reactors. In addition, a short overview is given about the impact of ESR via different catalysts such as noble metal, non-noble metal, and bi-metallic catalysts.
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Thomson, Christopher G., Ai-Lan Lee, and Filipe Vilela. "Heterogeneous photocatalysis in flow chemical reactors." Beilstein Journal of Organic Chemistry 16 (June 26, 2020): 1495–549. http://dx.doi.org/10.3762/bjoc.16.125.

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The synergy between photocatalysis and continuous flow chemical reactors has shifted the paradigms of photochemistry, opening new avenues of research with safer and scalable processes that can be readily implemented in academia and industry. Current state-of-the-art photocatalysts are homogeneous transition metal complexes that have favourable photophysical properties, wide electrochemical redox potentials, and photostability. However, these photocatalysts present serious drawbacks, such as toxicity, limited availability, and the overall cost of rare transition metal elements. This reduces their long-term viability, especially at an industrial scale. Heterogeneous photocatalysts (HPCats) are an attractive alternative, as the requirement for the separation and purification is largely removed, but typically at the cost of efficiency. Flow chemical reactors can, to a large extent, mitigate the loss in efficiency through reactor designs that enhance mass transport and irradiation. Herein, we review some important developments of heterogeneous photocatalytic materials and their application in flow reactors for sustainable organic synthesis. Further, the application of continuous flow heterogeneous photocatalysis in environmental remediation is briefly discussed to present some interesting reactor designs that could be implemented to enhance organic synthesis.
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Chebbi, Rachid. "Chemical reactors sequencing." Computer Applications in Engineering Education 22, no. 2 (April 22, 2011): 195–99. http://dx.doi.org/10.1002/cae.20545.

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Caravella, Alessio. "Extended Definition of Conversion and Reaction Extent for a Systematic Development of the Design Equations for Reactor Networks." Processes 12, no. 1 (January 1, 2024): 107. http://dx.doi.org/10.3390/pr12010107.

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The aim of this work is to present in a systematic way a novel general methodology to develop the design equations (heat and mass balances) for networks of ideal reactors, that is, Plug-Flow Reactors (PFRs) and Continuous Stirred Tank Reactors (CSTRs). In particular, after introducing the general definition of conversion to be used for reactor networks, several case studies of interest in chemical engineering are presented as topic-examples of application: (i) adiabatic-stage reactors with recycle, (ii) adiabatic-stage reactors with split, (iii) adiabatic-stage reactors intercooled by reactants and (iv) adiabatic-stage reactors with interstage distributed feed. More generally, the presented methodology can also be applied to develop the design equations for complex networks of interconnected reactors, not restricted to those considered in the present work. The motivation behind the present study lies in the fact that, to the best of our knowledge, a systematic development of the design equations of single reactors in reactor networks is currently missing in the open literature as well as in the reference textbooks of chemical reaction engineering and reactor design.
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Schmidt, Lanny D. "ChemInform Abstract: Millisecond Chemical Reactions and Reactors." ChemInform 31, no. 49 (December 5, 2000): no. http://dx.doi.org/10.1002/chin.200049292.

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Dissertations / Theses on the topic "Chemical reactors"

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Srinivasan, Ravi 1971. "Microfabricated reactors for partial oxidation reactions." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9865.

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Coker, Akintunde K. "A study of fast reactions in nozzle type reactors." Thesis, Aston University, 1985. http://publications.aston.ac.uk/10181/.

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Lambert, Paul G. "Gas evolution in batch chemical reactors." Thesis, London South Bank University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.618653.

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Seki, Hiroya. "Feedback Control of Nonlinear Chemical Reactors." 京都大学 (Kyoto University), 2002. http://hdl.handle.net/2433/149439.

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Rashid, Muhammad. "Stability and dynamic operability analysis of chemical processes." Title page, table of contents and abstract only, 1988. http://web4.library.adelaide.edu.au/theses/09ENS/09ensr224.pdf.

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Willis, Mark J. "Control of a class of chemical reactors." Thesis, University of Newcastle Upon Tyne, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315920.

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Dunckley, Christopher Paul. "Magnetic resonance chemical mapping of catalytic reactors." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612503.

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Sime, Nathan. "Numerical modelling of chemical vapour deposition reactors." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/36227/.

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In this thesis we study the chemical reactions and transport phenomena which occur in a microwave power assisted chemical vapour deposition (MPA-CVD) reactor which facilitates diamond growth. First we introduce a model of an underlying binary gas flow and its chemistry for a hydrogen gas mixture. This system is heated by incorporating a microwave frequency electric field, operating in a resonant mode in the CVD chamber. This heating facilitates the dissociation of hydrogen and the generation of a gas discharge plasma, a key component of carbon deposition in industrial diamond manufacture. We then proceed to summarise the discontinuous Galerkin (DG) finite element discretisation of the standard hyperbolic and elliptic partial differential operators which typically occur in conservation laws of continuum models. Additionally, we summarise the non-stabilised discontinuous Galerkin formulation of the time harmonic Maxwell operator. These schemes are then used as the basis for the discretisation method employed for the numerical approximation of the MPA-CVD model equations. The practical implementation of the resulting DG MPA-CVD model is an extremely challenging task, which is prone to human error. Thereby, we introduce a mathematical approach for the symbolic formulation and computation of the underlying finite element method, based on automatic code generation. We extend this idea further such that the DG finite element formulation is automatically computed following the user's specification of the convective and viscous flux terms of the underlying PDE system in this symbolic framework. We then devise a method for writing a library of automatically generated DG finite element formulations for a hierarchy of partial differential equations with automatic treatment of prescribed boundary conditions. This toolbox for automatically computing DG finite element solutions is then applied to the DG MPA-CVD model. In particular, we consider reactor designs inspired by the AIXTRON and LIMHP reactors which are analysed extensively in the literature.
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Samardzjia, Nikola. "Nonlinear analysis and control of chemical reactors." Thesis, University of Leeds, 1997. http://etheses.whiterose.ac.uk/728/.

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This thesis carries out a detailed study of a nonlinear spectral theory that is useful for modeling and controlling chemical reactors. The motivation for this work originates from a few reports which have demonstrated in the past that the nonlinear spectral method offers a useful mathematical framework for classifying and quantifying nonlinear complexities of large degrees of freedom, as well as for qualifying a general nonlinear dynamic behavior. We present and discuss this new theory and show that it extends the familiar linear systems notion of characteristic modes (eigenmodes), as well as the notions of mathematical quantities known as the eigenvectors, and eigenvalues, into a multi-dimensional nonlinear domain, i. e., applies to model dimensions one, two, three and higher. This approach offers a new insight into nonlinear phenomena, and as such has a significant theoretical and practical value. In the theory of nonlinear systems the spectral framework provides some useful answers regarding the issues of multivariate process complexity, stability and control. Similarly, in applications it often leads to a simple relation between a desired process behavior and control parameters. We demonstrate this by showing how a process operating point, its behavior, and its domain of attraction are determined by nonlinear structures which characterize both a process and its control realization. In addition, we show that by a correctly modeling and regulating process nonlinearities one can obtain a nonlinear control solution that often outperforms the conventional first-order realizations. That is, there exist important nonlinear structural and dynamic process relations which determine a feasibility of a control realization. This is demonstrated by studying control behaviors of several highly exothermic continuously stirred tank reactor processes.
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Conti, G. A. P. "Some aspects of process synthesis with emphasis on reactors and reactions." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234792.

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Two major, largely unknown, areas of process synthesis are explored in this dissertation, and procedures are proposed for the solving of problems within them. In each area, case studies are reported. The work on the first area results in the development of a general procedure for the efficient screening of alternative process routes. The procedure is applied to two examples of commodity chemicals: methyl methacrylate (MMA) and vinyl chloride monomer (VCM). By using suitable knowledge of organic chemistry, thermodynamics, kinetics, and costing, gradual screening of the process alternatives can be achieved from the earliest stages of conceptual design, with minimum calculation effort. The MMA example is concentrated on the selection of raw materials and of chemical routes; by following a number of heuristic and of rigorous rules, a list of prototype raw materials is rapidly developed. From this list it proves possible to create a reaction network connecting the selected raw materials with the target molecule, and 54 routes to MMA (including the two current commercial routes) were found to be of potential interest. Compared with the MMA case study, the VCM example moves further through the procedure to include pre-design capital costing; 14 reactions, resulting in 63 routes to VCM, are rapidly selected, and equilibrium and kinetics calculations reduce the number of promising VCM processes to 24. The operating conditions of the process reactors are also specified, and only three processes are eventually admitted to the final costing stage. 'Elementary plant sections', effecting only one reaction each, are costed separately for the three remaining processes, and it is shown that the three most promising processes can be analysed by joining together the 'sections' relevant to each process. The costing estimates are found to agree well with current practice. Furthermore, a graphical approach is devised to give quick estimates of product selling prices for a wide range of plant capacities and raw materials costs. The second major area of process synthesis considered is the synthesis of reactor networks integrated with the rest of the flowsheet. The complex reaction scheme by Van de Vusse (1964) was employed as an example in a pioneering study. A new procedural approach, which uses a hierarchy of three heuristics, is implemented. In this approach, the designer first devises a simple base case, and then methodically increases its complexity. A powerful analytical tool used is to target for maximum reactor system selectivity, in contrast with the target of maximum reactor yield proposed by previous workers. The dissertation ends with an example illustrating the scope for heat and power integration techniques in the later stages of the design of a flowsheet. A computerised model of a pressurised sulphuric acid plant is developed, and a number of suggestions are made for the improvement of a commercial process, leading to an increase of 15% in steam production.
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Books on the topic "Chemical reactors"

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Pereira, Carmo J. Reactors. New York: McGraw-Hill, 2008.

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Froment, Gilbert F. Chemical reactor analysis and design. Chichester: Wiley, 1990.

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R, Gunjal Prahant, Ranade Vivek V, and ScienceDirect (Online service), eds. Trickle Bed Reactors: Reactor Engineering and Applications. San Diego: Elsevier Science & Technology Books., 2011.

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I, De Lasa Hugo, Dogŭ G, and Ravella A, eds. Chemical reactor technology for environmentally safe reactors and products. Dordrecht: Kluwer Academic, 1992.

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Lasa, H. I., G. Doğu, and A. Ravella, eds. Chemical Reactor Technology for Environmentally Safe Reactors and Products. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2747-9.

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Trambouze, Pierre. Chemical reactors: Design, engineering, operation. Paris: Editions Technip, 1988.

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Schügerl, Karl. Bioreaction engineering: Reactions involving microorganisms and cells. Chichester: Wiley, 1987.

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1932-, Benuzzi A., and Zaldívar J. M. 1958-, eds. Safety of chemical batch reactors and storage tanks. Dordrecht: Kluwer Academic Publishers, 1991.

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1938-, Cybulski Andrzej, and Moulijn Jacob A, eds. Structured catalysts and reactors. New York: M. Dekker, 1998.

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Nauman, E. B. Chemical reactor design. Malabar, Fla: Krieger Pub., 1992.

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Book chapters on the topic "Chemical reactors"

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Gates, Bruce C., and Robert L. Powell. "Chemical Reactors and Chemical Reactions." In Introductory Elements of Analysis and Design in Chemical Engineering, 113–65. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003429944-5.

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Chaves, Iván Darío Gil, Javier Ricardo Guevara López, José Luis García Zapata, Alexander Leguizamón Robayo, and Gerardo Rodríguez Niño. "Chemical Reactors." In Process Analysis and Simulation in Chemical Engineering, 195–240. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-14812-0_5.

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Prud’homme, Roger. "Chemical Reactors." In Flows of Reactive Fluids, 109–25. Boston: Birkhäuser Boston, 2010. http://dx.doi.org/10.1007/978-0-8176-4659-2_6.

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Prud'Homme, Roger. "Chemical Reactors." In Flows and Chemical Reactions in Homogeneous Mixtures, 47–78. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118832653.ch2.

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Field, Robert W. "Chemical Reactors." In Chemical Engineering, 136–57. London: Macmillan Education UK, 1988. http://dx.doi.org/10.1007/978-1-349-09840-8_7.

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Chaurasia, Ashish S. "Chemical Reactors." In Computational Fluid Dynamics and Comsol Multiphysics, 5–48. Boca Raton: Apple Academic Press, 2021. http://dx.doi.org/10.1201/9781003180500-2.

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Codd, Sarah L., Joseph D. Seymour, Erica L. Gjersing, Justin P. Gage, and Jennifer R. Brown. "Reactors and Reactions." In NMR Imaging in Chemical Engineering, 509–33. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607560.ch5a.

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Gladden, Lynn F., Laura D. Anadon, Matthew H. M. Lim, and Andrew J. Sederman. "Reactors and Reactions." In NMR Imaging in Chemical Engineering, 534–51. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607560.ch5b.

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Pavlovskaya, Galina E., and Thomas Meersmann. "Reactors and Reactions." In NMR Imaging in Chemical Engineering, 551–70. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607560.ch5c.

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Koptyug, Igor V., and Anna A. Lysova. "Reactors and Reactions." In NMR Imaging in Chemical Engineering, 570–89. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607560.ch5d.

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Conference papers on the topic "Chemical reactors"

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Savin, Igor I., Sergey N. Tsyganok, Andrey N. Lebedev, Dmitry V. Genne, and Elena S. Smerdina. "Ultrasonic Chemical Reactors." In 2007 8th Siberian Russian Workshop and Tutorial on Electron Devices and Materials. IEEE, 2007. http://dx.doi.org/10.1109/sibedm.2007.4292989.

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Molins Colomer, Maite, Anna Broto Fantova, Xavier Berzosa Rodriguez, and Javier Fernandez Garcia. "Flow reactions in autocatalytic copper tubing reactors." In 15th Mediterranean Congress of Chemical Engineering (MeCCE-15). Grupo Pacífico, 2023. http://dx.doi.org/10.48158/mecce-15.t3-o-24.

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Ewinger, Angela, Guenter Rinke, Sigrid Kerschbaum, Monika Rinke, and Klaus Schubert. "Raman-Spectroscopy for Measuring Chemical Reactions in Micro Reactors." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62089.

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Micro heat exchangers, micro mixers and micro reactors have gained importance in chemical, pharmaceutical and life sciences applications. Due to the large surface to volume ratio these devices provide efficient mass and heat transfer. This results in greater selectivity and higher yield for chemical reactions. The Institute for Micro Process Engineering is working on the development, manufacturing, and testing of micro channel devices mainly manufactured of stainless steel, where channel widths and depths lie in the range of 0.2 mm. In order to obtain a better understanding of the physical and chemical processes within such components and to optimize these devices it is necessary to get a look into these micro channels during a mixing process or a chemical reaction. For this purpose laser Raman spectroscopy can be applied. This method is very selective for individual chemical compounds and allows a spatial resolution better than 0.01 mm. Figure 1 shows the experimental setup. The light of an air cooled cw argon ion laser is focused by a microscope objective into a micro channel, measuring the Raman bands over its cross section at several distances from the mixing point. A spectrograph with a CCD-array detects the Raman light, which consists of lines that are characteristic for the chemical compounds flowing through the micro channels and can therefore be used to calculate their concentrations.
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Kolb, Vera M., Mercedes Swanson, and Fredric M. Menger. "Coacervates as prebiotic chemical reactors." In SPIE Optical Engineering + Applications, edited by Richard B. Hoover, Gilbert V. Levin, and Alexei Y. Rozanov. SPIE, 2012. http://dx.doi.org/10.1117/12.928550.

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Arumbuliyur Comandur, Kaushik, Ali Asgar S. Bhagat, Subhashish Dasgupta, Ian Papautsky, and Rupak K. Banerjee. "Electroosmotic Injection and Chemical Kinetics in Micro Reactors." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-193050.

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The study of fluid flow in microchannels is of significant interest due to its application in a wide area of fields ranging from microscale flow injection, cooling of microchips, fuel vaporizer and micro reactors for chemical and biological systems. Design of effective electrokinetic micro reactors requires in-depth understanding of the electrokinetic phenomena and bulk reactions of species in the micro reactor. Although electrokinetic flows are popularly used for applications in the field of capillary electrophoresis (CE) [1], the phenomena of electroosmosis can be conveniently used for bulk transport and mixing of reagents. Electroosmosis occurs when the electrical double layer (EDL) near a solid-liquid interface is created by an external electric field. The uniqueness of electroosmotic flow (EOF) is characterized by plug velocity profile having uniform flow. Devasenathipathy et al. [2] showed that EOF offers a number of significant advantages over conventional pressure driven flow like reduced sample diffusion and controlled sample movement.
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Ghanem, Akram, Thierry Lemenand, Dominique Della Valle, and Hassan Peerhossaini. "Assessment of Mixing by Chemical Probe in Swirl Flow HEX Reactors." In ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/fedsm2012-72035.

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Mixing is a fundamental issue in process engineering and many industrial fields. It is closely related to a large number of different applications, such as chemical reactions, thermal transfer, liquid-liquid extraction, crystallization, and the like. In fact, mixing whether at the reactor scale, sustained by the flow structures, or at molecular scales, influences the selectivity and hence the productivity of reactions. Understanding and quantification of the micromixing mechanism is critical in industrial chemical processes, especially for fast exothermal reactions. Micromixing can be characterized by chemical probe methods based on observation of a local chemical reaction that results from a competition between turbulent mixing at microscales and the reaction kinetics. A system of parallel competing reactions producing iodine was developed by Fournier et al. [1] to study partial segregation in stirred tanks. The coupling of the borate neutralization and the Dushman reaction in this system allows the measurement of micromixing efficiency in reactors by monitoring the amount of iodine produced. Called the iodide-iodate method, this technique has been extensively used in different types of reactors. A novel adaptive procedure recently developed by the authors to improve the reliability of the iodide-iodate method is used here. The heat exchanger-reactor presented here is an innovative geometry based on the addition in parallel of tubes equipped with helical inserts. It is expected to qualify as a low-cost compact heat-exchanger reactor and static mixer of high performance.
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Freund, Andreas, and Clemens Merten. "Design Procedure for Compact Chemical Reactors." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASME, 2004. http://dx.doi.org/10.1115/pvp2004-2893.

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Churchill, Stuart W. "COMPACT HEAT EXCHANGERS AS CHEMICAL REACTORS." In Compact Heat Exchangers and Enhancement Technology for the Process Industries - 2003. Connecticut: Begellhouse, 2023. http://dx.doi.org/10.1615/978-1-56700-195-2.550.

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Atig, Asma, Fabrice Druaux, Dimitri Lefebvre, Kamel Abderrahim, and Ridha Ben Abdennour. "Neural emulation applied to chemical reactors." In 2010 7th International Multi-Conference on Systems, Signals and Devices (SSD). IEEE, 2010. http://dx.doi.org/10.1109/ssd.2010.5585587.

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Bartusiak, R. Donald, Christos Georgakis, and Matthew J. Reilly. "Nonlinear Control Structures for Chemical Reactors." In 1986 American Control Conference. IEEE, 1986. http://dx.doi.org/10.23919/acc.1986.4789085.

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Reports on the topic "Chemical reactors"

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Salinger, A. G., J. N. Shadid, S. A. Hutchinson, G. L. Hennigan, K. D. Devine, and H. K. Moffat. Massively parallel computation of 3D flow and reactions in chemical vapor deposition reactors. Office of Scientific and Technical Information (OSTI), December 1997. http://dx.doi.org/10.2172/567494.

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Showalter, Kenneth. Prediction and Control of Dynamical Systems: Applications in Combustion and Chemical Reactors. Fort Belvoir, VA: Defense Technical Information Center, March 2002. http://dx.doi.org/10.21236/ada399969.

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Cinar, A. Vibrational control of chemical reactors: Selectivity enhancement, stabilization and improvement of transient behavior. Office of Scientific and Technical Information (OSTI), September 1990. http://dx.doi.org/10.2172/6532352.

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Winters, W. S., G. H. Evans, and R. Grief. The influence of convective heat transfer on flow stability in rotating disk chemical vapor deposition reactors. Office of Scientific and Technical Information (OSTI), June 1997. http://dx.doi.org/10.2172/552758.

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Gupta, Aman, Piyush Sabharwall, and Vivek Utgikar. Preliminary Pilot-scale Study and Techno-economic Analysis of Chemical Heat Pump with Conventional Nuclear Reactors. Office of Scientific and Technical Information (OSTI), June 2022. http://dx.doi.org/10.2172/1885160.

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Coltrin, M. E., R. J. Kee, G. H. Evans, E. Meeks, F. M. Rupley, and J. F. Grcar. SPIN (Version 3. 83): A Fortran program for modeling one-dimensional rotating-disk/stagnation-flow chemical vapor deposition reactors. Office of Scientific and Technical Information (OSTI), August 1991. http://dx.doi.org/10.2172/6248912.

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Bartholomay, R. C., L. L. Knobel, and B. J. Tucker. Chemical constituents in water from wells in the vicinity of the Naval Reactors Facility, Idaho National Engineering Laboratory, Idaho, 1990--91. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/10154839.

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Tucker, B. J., L. L. Knobel, and R. C. Bartholomay. Chemical constituents in water from wells in the vicinity of the Naval Reactors Facility, Idaho National Engineering Laboratory, Idaho, 1991--93. Office of Scientific and Technical Information (OSTI), November 1995. http://dx.doi.org/10.2172/219319.

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Olsen, Mitchell, and Willson. L52248 Investigation of Formaldehyde Chemical Kinetics. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), March 2004. http://dx.doi.org/10.55274/r0011246.

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Abstract:
The program is divided into two parts, which are (1) chemical kinetic modeling and (2) plug flow reactor tests. The chemical kinetic modeling focuses on the development of a model that can accurately predict formaldehyde formation and destruction. The most recent version of Chemkin is utilized with various kinetic mechanisms, including GRI-Mech. Numerous kinetic mechanisms are examined in order to select the most accurate one for predicting formaldehyde formation and destruction. The plug flow reactor tests consist of a series of steady state experimental investigations aimed at characterizing formaldehyde. Formaldehyde concentrations in the reactor are measured with an FTIR.
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Bartholomay, R. C., L. L. Knobel, and B. J. Tucker. Chemical and radiochemical constituents in water from wells in the vicinity of the Naval Reactors Facility, Idaho National Engineering Laboratory, Idaho, 1994--95. Office of Scientific and Technical Information (OSTI), December 1997. http://dx.doi.org/10.2172/654043.

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