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Analysis Of Individual And Integrated Packed Bed Membrane Reactors For Oxidative Coupling Of Methane
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Book Synopsis Analysis of Individual and Integrated Packed-Bed Membrane Reactors for Oxidative Coupling of Methane by : Hamid Reza Godini
Download or read book Analysis of Individual and Integrated Packed-Bed Membrane Reactors for Oxidative Coupling of Methane written by Hamid Reza Godini and published by epubli GmbH. This book was released on 2014-10-13 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The procedure and the results of model-based and experimental analysis of individual and integrated porous packed-bed membrane reactor for Oxidative Coupling of Methane (OCM) process are provided.
Book Synopsis Oxidative Coupling of Methane to Ethylene in Packed Bed Membrane Reactor by : Norhafizah Che May
Download or read book Oxidative Coupling of Methane to Ethylene in Packed Bed Membrane Reactor written by Norhafizah Che May and published by . This book was released on 2002 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct Natural Gas Conversion to Value-Added Chemicals by : Jianli Hu
Download or read book Direct Natural Gas Conversion to Value-Added Chemicals written by Jianli Hu and published by CRC Press. This book was released on 2020-09-24 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct Natural Gas Conversion to Value-Added Chemicals comprehensively discusses all major aspects of natural gas conversion and introduces a broad spectrum of recent technological developments. Specifically, the book describes heterogeneous and homogeneous catalysis, microwave-assisted conversion, non-thermal plasma conversion, electrochemical conversion, and novel chemical looping conversion approaches. Provides an excellent benchmark resource for the industry and academics Appeals to experienced researchers as well as newcomers to the field, despite the variety of contributing authors and the complexity of the material covered Includes all aspects of direct natural gas conversion: fundamental chemistry, different routes of conversion, catalysts, catalyst deactivation, reaction engineering, novel conversion concepts, thermodynamics, heat and mass transfer issues, system design, and recent research and development Discusses new developments in natural gas conversion and future challenges and opportunities This book is as an excellent resource for advanced students, technology developers, and researchers in chemical engineering, industrial chemistry, and others interested in the conversion of natural gas.
Book Synopsis Analysis of Fluidized-bed and Fluidized-bed-membrane Reactor Concepts for Oxidative Coupling of Methane by : Setarehalsadat Sadjadi
Download or read book Analysis of Fluidized-bed and Fluidized-bed-membrane Reactor Concepts for Oxidative Coupling of Methane written by Setarehalsadat Sadjadi and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Non-oxidative Coupling of Methane for Use in a Hydrogen Transporting Membrane Reactor by : Michael O'Neal Nutt
Download or read book Non-oxidative Coupling of Methane for Use in a Hydrogen Transporting Membrane Reactor written by Michael O'Neal Nutt and published by . This book was released on 2000 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis OXIDATIVE COUPLING OF METHANE USING INORGANIC MEMBRANE REACTORS. by :
Download or read book OXIDATIVE COUPLING OF METHANE USING INORGANIC MEMBRANE REACTORS. written by and published by . This book was released on 1998 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is to study the oxidative coupling of methane in catalytic inorganic membrane reactors. A specific target is to achieve conversion of methane to C2 hydrocarbons at very high selectivity and higher yields than in conventional non-porous, co-feed, fixed bed reactors by controlling the oxygen supply through the membrane. A membrane reactor has the advantage of precisely controlling the rate of delivery of oxygen to the catalyst. This facility permits balancing the rate of oxidation and reduction of the catalyst. In addition, membrane reactors minimize the concentration of gas phase oxygen thus reducing non selective gas phase reactions, which are believed to be a main route for the formation of CO(subscript x) products. Such gas phase reactions are a cause of decreased selectivity in the oxidative coupling of methane in conventional flow reactors. Membrane reactors could also produce higher product yields by providing better distribution of the reactant gases over the catalyst than the conventional plug flow reactors. Membrane reactor technology also offers the potential for modifying the membranes both to improve catalytic properties as well as to regulate the rate of the permeation/diffusion of reactants through the membrane to minimize by-product generation. Other benefits also exist with membrane reactors, such as the mitigation of thermal hot-spots for highly exothermic reactions such as the oxidative coupling of methane. The application of catalytically active inorganic membranes has potential for drastically increasing the yield of reactions which are currently limited by either thermodynamic equilibria, product inhibition, or kinetic selectivity.
Book Synopsis Analysis of Dense Ceramic Membrane Reactors for the Oxidative Coupling of Methane by : Weijian Wang
Download or read book Analysis of Dense Ceramic Membrane Reactors for the Oxidative Coupling of Methane written by Weijian Wang and published by . This book was released on 1994 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Membrane Engineering for the Treatment of Gases Volume 2 by : Enrico Drioli
Download or read book Membrane Engineering for the Treatment of Gases Volume 2 written by Enrico Drioli and published by Royal Society of Chemistry. This book was released on 2017-10-06 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 1. Gas-separation issues with membranes -- volume 2. Gas-separation issues combined with membrane reactors.
Book Synopsis Integrated Catalytic Membrane Reactor for Oxidative Coupling of Methane by : Michiel Boeckx
Download or read book Integrated Catalytic Membrane Reactor for Oxidative Coupling of Methane written by Michiel Boeckx and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Membrane Engineering for the Treatment of Gases by : Enrico Drioli
Download or read book Membrane Engineering for the Treatment of Gases written by Enrico Drioli and published by Royal Society of Chemistry. This book was released on 2017-10-06 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elaborating on recent and future developments in the field of membrane engineering, Volume 2 is devoted to the main advances in gaseous phase membrane reactors and separators. The book covers innovative membranes and new processes, and includes new chapters on cost analysis and life cycle assessment. Together with Volume 1, these books form an innovative reference work on membrane engineering and technology in the field of gas separation and gaseous phase membrane reactors.
Book Synopsis Methane Oxidative Coupling Using Membrane Reactors by : Yaping Lü
Download or read book Methane Oxidative Coupling Using Membrane Reactors written by Yaping Lü and published by . This book was released on 1996 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report, June 25, 1994--September 24, 1994 by :
Download or read book Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report, June 25, 1994--September 24, 1994 written by and published by . This book was released on 1995 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: This quarterly report describes results from the experimental studies on oxidative coupling of methane, oxygen conducting perovskite dense membrane synthesis and modeling studies of the methane coupling reaction. The focus of the experimental study is to explore the effects of varying catalyst loading, varying methane to oxygen ratios and feed conditions when the oxygen conversion is much less than 100%. Results from these studies help in understanding the effects of various parameters controlling methane coupling. Dense membrane synthesis and characterization results are presented which describe new approaches to the synthesis and characterization of these membranes. The modeling results described in this report present a theoretical fit to the experimental data on oxidative coupling of methane in fixed bed reactors. The parameters from the fit are used to predict the trends in experimental data obtained from VYCOR membrane reactors. The predicted trends are based on a theoretical model employing simplified methane coupling kinetics.
Book Synopsis Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report, June 25, 1995--September 24, 1995 by :
Download or read book Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report, June 25, 1995--September 24, 1995 written by and published by . This book was released on 1995 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research focus, for the development of a radial flow catalytic membrane reactor for studying methane coupling, concentrated on understanding the effects of pore size, catalyst loading and catalyst distribution inside the membrane, on the hydrocarbon selectivity. The experimental results from the catalytic studies of oxidative coupling of methane in the radial flow membrane reactors are summarized in this report and the reactor performances of three radial flow reactors with pore sizes of 0.02 [mu]m are interpreted by the energy dispersive X-ray digital mapping (EDX) technique. A conventional fixed bed catalytic reactor was set up and run under the same conditions as were used for the radial flow reactor studies. Two sources of samarium oxide catalysts were used in these experiments and their performances were compared in terms of C2 selectivity at same methane conversion. Compared to the monoclinic form of samarium oxide, the catalyst with cubic form was more active and selective for methane oxidative coupling. A general reactor model for oxidation reactions with distributed feed of oxygen and product removal strategies was proposed. Six types of feeding modes were analyzed and their feed distributions were optimized such that the desired product yields at the reactor outlet were maximized.
Book Synopsis Membrane Reactors for Hydrogen Production Processes by : Marcello De Falco
Download or read book Membrane Reactors for Hydrogen Production Processes written by Marcello De Falco and published by Springer Science & Business Media. This book was released on 2011-03-25 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane Reactors for Hydrogen Production Processes deals with technological and economic aspects of hydrogen selective membranes application in hydrogen production chemical processes. Membrane Reactors for Hydrogen Production Processes starts with an overview of membrane integration in the chemical reaction environment, formulating the thermodynamics and kinetics of membrane reactors and assessing the performance of different process architectures. Then, the state of the art of hydrogen selective membranes, membrane manufacturing processes and the mathematical modeling of membrane reactors are discussed. A review of the most useful applications from an industrial point of view is given. These applications include: natural gas steam reforming, autothermal reforming, water gas shift reaction, decomposition of hydrogen sulphide, and alkanes dehydrogenation. The final part is dedicated to the description of a pilot plant where the novel configuration was implemented at a semi-industrial scale. Plant engineers, researchers and postgraduate students will find Membrane Reactors for Hydrogen Production Processes a comprehensive guide to the state of the art of membrane reactor technology.
Book Synopsis Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report, September 25, 1995--December 24, 1995 by :
Download or read book Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report, September 25, 1995--December 24, 1995 written by and published by . This book was released on 1996 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of the third type of catalytic membrane reactor configuration, with catalyst deposited in the membrane and no catalyst or inert materials in the tube side, was evaluated. The C2 selectivity obtained was about 10% due to the gas phase reaction in the empty tube side of the reactor. The membrane reactor with an oxygen-permeable dense membrane has been built. The use of a dense membrane will eliminate the loss of hydrocarbon from the tube side to the shell side, as observed in the Vycor glass membrane reactor. Also, air can be used as the oxygen source without contaminating the product. La/MgO was synthesized and will be used as the catalyst for the dense membrane reactor. This catalyst was reported in the literature to show significant improvement of C2 selectivity and yield for oxidative coupling of methane in a packed-bed reactor by using the operation mode of staged-feed of oxygen. A reactor mode for methane oxidative coupling in reactors with both distributed oxygen feed and C2 product removal was developed based on the general model of cross-flow reactors reported in the last quarterly report. A distributed oxygen feed could give rise to much higher C2 yield than the co-feed reactor as long as the space time is long enough. In the case of a two-membrane reactor, where oxygen is supplied by one membrane and products are removed through the other membrane, a high separation factor of C2 product to methane for the product-removal membrane is critical to achieve high C2 yield.
Book Synopsis Methane Coupling by Membrane Reactor. First Quarterly Report, 1997 by :
Download or read book Methane Coupling by Membrane Reactor. First Quarterly Report, 1997 written by and published by . This book was released on 1997 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mn-W-Na/SiO2 catalyst was studied by running the methane coupling reactions at different methane to oxygen ratios, temperatures and dilution gas flow rates. For methane to oxygen ratios less than 3, the C2 yield was almost the same; and C2 yield began to decrease as the methane to oxygen ratio was further increased. The optimal temperature observed was around 800°C, where the C2 yield reached a maximum value. Increasing the dilution gas (helium) flow rate resulted in higher C2 selectivity; however, after a certain dilution gas flow rate the C2 yield began to decrease due to a decrease in methane conversion as a result of the reduced contact time. The stability study of the catalyst showed that, after five successive run cycles, the C2 yield obtained decreased from 24% to 19% at 780 °C, and methane, oxygen and helium flow rates of 12.2, 4.1, and 44. 3 mm/min, respectively. XRD analysis showed that, after the reaction, the XRD peaks of the cristabolite and Na2WO4 phases in the catalyst became smaller than those in the fresh catalyst, and that at least one new, unidentified phase was observed. Mn-W-Na/SiO2 catalyst was used as the methane oxidative coupling catalyst in a porous membrane reactor and its performance was compared with a packed reactor operated at similar conditions. Although the membrane reactor showed lower methane conversion at the same reaction conditions, it gave higher C2 selectivity and C2 yield at similar methane conversions.
Book Synopsis Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report by :
Download or read book Methane Coupling by Membrane Reactor. Quarterly Technical Progress Report written by and published by . This book was released on 1993 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several membranes have been investigated for use in a membrane reactor. Porous VYCOR has been tested for permeability changes with temperature. Three-sectional VYCOR membranes, with a porous central section, have been fabricated and tested in the experimental setup. Catalysts for methane coupling have been reviewed in the literature and five catalysts have been selected. Modeling studies of the methane oxidative coupling reaction in different reactor configurations shows higher C2 selectivity and yield with membrane reactors as compared to conventional packed bed reactors.
