1
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Le Q, Ma J, Bhattacharyya D, Zitney SE, Burgard AP. Design and Multiobjective Dynamic Optimization of Superheaters for Load-Following Operation in Pulverized Coal Power Plants. Ind Eng Chem Res 2024; 63:330-344. [PMID: 38223499 PMCID: PMC10785806 DOI: 10.1021/acs.iecr.3c02130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 01/16/2024]
Abstract
Pulverized coal power plants are increasingly participating in aggressive load-following markets, therefore necessitating the design and optimization of primary superheaters for flexible operations. These superheaters play a critical role in maintaining the final steam temperature of the steam turbine, but their high operating temperatures and pressures make them prone to failure. This study focuses on the optimal design of future-generation primary superheaters for a fast load-following operation. To achieve this, a detailed first-principles model of a primary superheater is developed along with submodels for stress and fatigue damage. Two single-objective optimization problems are solved: one for minimizing metal mass as a measure of capital cost and another for minimizing pressure drop on the steam side as a measure of operating cost. Since these objective functions conflict, a multiobjective optimization problem is executed using a weighted metric methodology. Results from these optimization studies show that the base case design can violate stress constraints during the aggressive load-following operation. However, by optimizing the design variables, it is possible to not only satisfy tight stress constraints but also achieve the desired number of allowable cycles and adhere to the steam outlet temperature constraint. In addition, the optimized design reduces either the metal mass or the steam-side pressure drop compared to that of the base case design. Importantly, this approach is not limited to primary superheaters alone but can also be applied to similar high-temperature heat exchangers in other applications.
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Affiliation(s)
- Quang
Minh Le
- Department
of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Jinliang Ma
- National
Energy Technology Laboratory, Pittsburgh, Pennsylvania 15236, United States
| | - Debangsu Bhattacharyya
- Department
of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Stephen E. Zitney
- Department
of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
- National
Energy Technology Laboratory, Morgantown, West Virginia 26507, United States
| | - Anthony P. Burgard
- National
Energy Technology Laboratory, Pittsburgh, Pennsylvania 15236, United States
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2
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Kreitz B, Wehinger GD, Goldsmith CF, Turek T. Microkinetic modeling of the transient CO2 methanation with DFT‐based uncertainties in a Berty reactor. ChemCatChem 2022. [DOI: 10.1002/cctc.202200570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bjarne Kreitz
- Brown University School of Engineering 184 Hope Street 02906 Providence UNITED STATES
| | - Gregor D. Wehinger
- Technische Universitat Clausthal Institute for Chemical and Electrochemical Engineering GERMANY
| | | | - Thomas Turek
- TU Clausthal Institut für Chemische und Elektrochemische Verfahrenstechnik Leibnizstr. 17 38678 Clausthal-Zellerfeld GERMANY
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3
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Herrmann F, Grünewald M, Meijer T, Gardemann U, Riese J. Performance of a Laboratory-Scale Methanation Plant with Catalyst Dilution under Dynamic Operating Conditions. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Felix Herrmann
- Laboratory of Fluid Separations, Faculty of Mechanical Engineering, Ruhr University Bochum, Universitätsstraße 150, 44801 Bochum, Germany
| | - Marcus Grünewald
- Laboratory of Fluid Separations, Faculty of Mechanical Engineering, Ruhr University Bochum, Universitätsstraße 150, 44801 Bochum, Germany
| | - Tobias Meijer
- Zentrum für BrennstoffzellenTechnik ZBT GmbH, Carl-Benz-Straße 201, 47057 Duisburg, Germany
| | - Ulrich Gardemann
- Zentrum für BrennstoffzellenTechnik ZBT GmbH, Carl-Benz-Straße 201, 47057 Duisburg, Germany
| | - Julia Riese
- Laboratory of Fluid Separations, Faculty of Mechanical Engineering, Ruhr University Bochum, Universitätsstraße 150, 44801 Bochum, Germany
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4
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Herrmann F, Grünewald M, Meijer T, Gardemann U, Feierabend L, Riese J. Operating window and flexibility of a lab-scale methanation plant. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117632] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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5
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Abel KL, Beger T, Poppitz D, Zimmermann RT, Kuschel O, Sundmacher K, Gläser R. Monolithic Al2O3 Xerogels with Hierarchical Meso‐/Macropore System as Catalyst Supports for Methanation of CO2. ChemCatChem 2022. [DOI: 10.1002/cctc.202200288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ken Luca Abel
- Leipzig University: Universitat Leipzig Institute of Chemical Technology GERMANY
| | - Tobias Beger
- Leipzig University: Universitat Leipzig Institute of Chemical Technology GERMANY
| | - David Poppitz
- Leipzig University: Universitat Leipzig Institute of Chemical Technology GERMANY
| | - Ronny T. Zimmermann
- Otto-von-Guericke-University Magdeburg: Otto von Guericke Universitat Magdeburg Institute of Process Engineering GERMANY
| | - Oliver Kuschel
- Leipzig University: Universitat Leipzig Institute of Chemical Technology GERMANY
| | - Kai Sundmacher
- Otto-von-Guericke-University Magdeburg: Otto von Guericke Universitat Magdeburg Institute of Process Engineering GERMANY
| | - Roger Gläser
- Universitat Leipzig Institute of Chemical Technology Linnéstr. 3 4103 Leipzig GERMANY
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6
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A 3D Transient CFD Simulation of a Multi-Tubular Reactor for Power to Gas Applications. ENERGIES 2022. [DOI: 10.3390/en15093383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A 3D stationary CFD study was conducted in our previous work, resulting in a novel reactor design methodology oriented to upgrading biogas through CO2 methanation. To enhance our design methodology incorporating relevant power to gas operational conditions, a novel transient 3D CFD modelling methodology is employed to simulate the effect of relevant dynamic disruptions on the behaviour of a tubular fixed bed reactor for biogas upgrading. Unlike 1D/2D models, this contribution implements a full 3D shell cooled methanation reactor considering real-world operational conditions. The reactor’s behaviour was analysed considering the hot-spot temperature and the outlet CH4 mole fraction as the main performance parameters. The reactor start-up and shutdown times were estimated at 330 s and 130 s, respectively. As expected, inlet feed and temperature disruptions prompted “wrong-way” behaviours. A 30 s H2 feed interruption gave rise to a transient low-temperature hot spot, which dissipated after 60 s H2 feed was resumed. A 20 K rise in the inlet temperature (523–543 K) triggered a transient low-temperature hot spot (879 to 850 K). On the contrary, a 20 K inlet temperature drop resulted in a transient high-temperature hot spot (879 to 923 K), which exposed the catalyst to its maximum operational temperature. The maximum idle time, which allowed for a warm start of the reactor, was estimated at three hours in the absence of heat sources. No significant impacts were found on the product gas quality (% CH4) under the considered disruptions. Unlike typical 1D/2D simulation works, a 3D model allowed to identify the relevant design issues like the impact of hot-spot displacement on the reactor cooling efficiency.
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7
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Schulte ML, Weber S, Klag L, Grunwaldt JD, Sheppard TL. Synchrotron PXRD deconvolutes nickel particle and support changes in Ni/ZrO 2 methanation catalysts. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00972b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Operando synchrotron powder X-ray diffraction deconvolutes support and metal nanoparticle changes during thermal deactivation of Ni/ZrO2 methanation catalysts.
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Affiliation(s)
- Mariam L. Schulte
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 20, 76131 Karlsruhe, Germany
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Sebastian Weber
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 20, 76131 Karlsruhe, Germany
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Linda Klag
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 20, 76131 Karlsruhe, Germany
| | - Jan-Dierk Grunwaldt
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 20, 76131 Karlsruhe, Germany
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Thomas L. Sheppard
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 20, 76131 Karlsruhe, Germany
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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8
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Raghu AK, Kaisare NS. Thermally integrated microreactor for Sabatier reaction: Study of air-cooled and inert-diluted counter-current operation strategies. Catal Today 2022. [DOI: 10.1016/j.cattod.2020.08.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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CO2 methanation in a shell and tube reactor CFD simulations: high temperatures mitigation analysis. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116871] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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10
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A CFD Design Approach for Industrial Size Tubular Reactors for SNG Production from Biogas (CO2 Methanation). ENERGIES 2021. [DOI: 10.3390/en14196175] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A tubular reactor based on the disk and doughnut concept was designed as an engineering solution for biogas upgrading via CO2 methanation. CFD (Computational Fluid Dynamics) benchmarks agreed well with experimental and empirical (correlation) data, giving a maximum error of 8.5% and 20% for the chemical reaction and heat transfer models, respectively. Likewise, hot spot position was accurately predicted, with a 5% error. The methodology was used to investigate the effect of two commercially available coolants (thermal oil and molten salts) on overall reactor performance through a parametric study involving four coolant flow rates. Although molten salts did show higher heat transfer coefficients at lower coolant rates, 82% superior, it also increases, by five times, the pumping power. A critical coolant flow rate (3.5 m3/h) was found, which allows both a stable thermal operation and optimum pumping energy consumption. The adopted coolant flow range remains critical to guarantee thermal design validity in correlation-based studies. Due to the disk and doughnut configuration, coolant flow remains uniform, promoting turbulence (Re ≈ 14,000 at doughnut outlet) and maximizing heat transfer at hot spot. Likewise, baffle positioning was found critical to accommodate and reduce stagnant zones, improving the heat transfer. Finally, a reactor design is presented for SNG (Synthetic Natural Gas) production from a 150 Nm3 h−1 biogas plant.
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11
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Strucks P, Failing L, Kaluza S. A Short Review on Ni‐Catalyzed Methanation of CO
2
: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation. CHEM-ING-TECH 2021. [DOI: 10.1002/cite.202100049] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Peter Strucks
- Hochschule Düsseldorf Fachbereich Maschinenbau und Verfahrenstechnik Münsterstraße 156 40476 Düsseldorf Germany
| | - Luisa Failing
- Hochschule Düsseldorf Fachbereich Maschinenbau und Verfahrenstechnik Münsterstraße 156 40476 Düsseldorf Germany
| | - Stefan Kaluza
- Hochschule Düsseldorf Fachbereich Maschinenbau und Verfahrenstechnik Münsterstraße 156 40476 Düsseldorf Germany
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12
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Fache A, Marias F, Castaldi MJ, Lugo-Pimentel M, Nikitin Y, Moutushi T. Fixed-bed reactors for exothermic reactions: A qualitative relation between start-up time and traveling waves velocity. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Jeong Y, Park J, Han M. Design and Control of a Fixed-Bed Recycle Reactor with Multicatalyst Layers: Methanation of Carbon Dioxide. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Youngmin Jeong
- Department of Chemical Engineering & Applied Chemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
| | - Jonghyun Park
- Department of Chemical Engineering & Applied Chemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
| | - Myungwan Han
- Department of Chemical Engineering & Applied Chemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
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14
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Ortiz-Laverde S, Rengifo C, Cobo M, Figueredo M. Proposal of an open-source computational toolbox for solving PDEs in the context of chemical reaction engineering using FEniCS and complementary components. Heliyon 2021; 7:e05772. [PMID: 33521341 PMCID: PMC7820488 DOI: 10.1016/j.heliyon.2020.e05772] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/27/2020] [Accepted: 12/15/2020] [Indexed: 11/04/2022] Open
Abstract
In this contribution, an open-source computational toolbox composed of FEniCS and complementary packages is introduced to the chemical and process engineering field by addressing two case studies. First, the oxidation of o-xylene to phthalic anhydride is modelled and used as a FEniCS′ proof-of-concept based on a comparison with the software Aspen Custom Modeler (ACM). The results show a maximum absolute error of 2% and thus a good FEniCS/ACM agreement. Second, synthetic natural gas (SNG) production through CO2 methanation is covered in further detail. In this instance, a parametric study is performed for a tube bundle fixed-bed reactor employing a two-dimensional and transient pseudo-homogeneous model. An operating window for critical variables is evaluated, discussed, and successfully contrasted with the literature. Therefore, the computational toolbox methodology and the consistency of the results are validated, strengthening FEniCS and complements as an interesting alternative to solve mathematical models concerning chemical reaction engineering.
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Affiliation(s)
- Santiago Ortiz-Laverde
- Energy, Materials and Environment Laboratory, Department of Chemical Engineering, Universidad de La Sabana, Campus Universitario Puente del Común, Km. 7 Autopista Norte, Bogotá, Colombia
| | - Camilo Rengifo
- Department of Mathematics, Physics and Statistics, Universidad de La Sabana, Campus Universitario Puente del Común, Km. 7 Autopista Norte, Bogotá, Colombia
| | - Martha Cobo
- Energy, Materials and Environment Laboratory, Department of Chemical Engineering, Universidad de La Sabana, Campus Universitario Puente del Común, Km. 7 Autopista Norte, Bogotá, Colombia
| | - Manuel Figueredo
- Energy, Materials and Environment Laboratory, Department of Chemical Engineering, Universidad de La Sabana, Campus Universitario Puente del Común, Km. 7 Autopista Norte, Bogotá, Colombia
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15
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Affiliation(s)
- Felix Herrmann
- Ruhr University Bochum Faculty of Mechanical Engineering, Laboratory of Fluid Separations Universitätsstraße 150 4801 Bochum Germany
| | - Marcus Grünewald
- Ruhr University Bochum Faculty of Mechanical Engineering, Laboratory of Fluid Separations Universitätsstraße 150 4801 Bochum Germany
| | - Julia Riese
- Ruhr University Bochum Faculty of Mechanical Engineering, Laboratory of Fluid Separations Universitätsstraße 150 4801 Bochum Germany
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16
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Meyer D, Schumacher J, Friedland J, Güttel R. Hydrogenation of CO/CO 2 Mixtures on Nickel Catalysts: Kinetics and Flexibility for Nickel Catalysts. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02072] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dominik Meyer
- Institute of Chemical Engineering, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Jannik Schumacher
- Institute of Chemical Engineering, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Jens Friedland
- Institute of Chemical Engineering, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Robert Güttel
- Institute of Chemical Engineering, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
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17
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Vilardi G. P-aminophenol catalysed production on supported nano-magnetite particles in fixed-bed reactor: Kinetic modelling and scale-up. CHEMOSPHERE 2020; 250:126237. [PMID: 32088618 DOI: 10.1016/j.chemosphere.2020.126237] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/12/2020] [Accepted: 02/14/2020] [Indexed: 06/10/2023]
Abstract
The aim of this work was to investigate on the possibility to use nano-magnetite particles supported on waste biomass as heterogeneous catalyst for the production of p-aminophenol starting from a well-known pollutant, p-nitrophenol, in fixed-bed reactors. The kinetic and the thermodynamic of the process was firstly studied in batch system, subsequently a first scale-up was performed using a glass column packed with the supported catalyst. The experimental data obtained with the column were interpreted in light of a suitable dynamic model. The Langmuir-Hinshelwood mechanism well described the process, obtaining from the data fitting a surface rate kinetic constant k = 2.68 × 10-6 mol/m2·h, an adsorption equilibrium constants for PNP and BH4- species equal to 20.07 l/mol and 1.83 l/mol, at 25 °C. The Eyring equation was used to fit the apparent kintic constant variation with the temperature, to estimate thermodynamic parameters, obtaining a ΔH = - 1145.68 kJ/mol and ΔS = -315.02 kJ/K·mol. The process was then simulated in PROII environment, investigating the influence of initial PNP flowrate, NaBH4/PNP and reactor length/diameter ratios on PNP conversion, on required duty to maintain isothermal conditions and on pressure drops in the reactor.
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Affiliation(s)
- Giorgio Vilardi
- Sapienza University of Rome, Dept. of Chemical Engineering Materials Environment, Via Eudossiana 18, 00184, Rome, Italy.
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18
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Scharl V, Fischer F, Herrmann S, Fendt S, Spliethoff H. Applying Reaction Kinetics to Pseudohomogeneous Methanation Modeling in Fixed‐Bed Reactors. Chem Eng Technol 2020. [DOI: 10.1002/ceat.201900535] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Valentin Scharl
- Technical University of Munich Chair of Energy Systems Boltzmannstrasse 15 85748 Garching Germany
| | - Felix Fischer
- Technical University of Munich Chair of Energy Systems Boltzmannstrasse 15 85748 Garching Germany
| | - Stephan Herrmann
- Technical University of Munich Chair of Energy Systems Boltzmannstrasse 15 85748 Garching Germany
| | - Sebastian Fendt
- Technical University of Munich Chair of Energy Systems Boltzmannstrasse 15 85748 Garching Germany
| | - Hartmut Spliethoff
- Technical University of Munich Chair of Energy Systems Boltzmannstrasse 15 85748 Garching Germany
- The Bavarian Center for Applied Energy Research e.V. Walther-Meissner-Strasse 6 85748 Garching Germany
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19
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Dynamically Operated Fischer–Tropsch Synthesis in PtL—Part 2: Coping with Real PV Profiles. CHEMENGINEERING 2020. [DOI: 10.3390/chemengineering4020027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Climate change calls for a paradigm shift in the primary energy generation that comes with new challenges to store and transport energy. A decentralization of energy conversion can only be implemented with novel methods in process engineering. In the second part of our work, we took a deeper look into the load flexibility of microstructured Fischer–Tropsch synthesis reactors to elucidate possible limits of dynamic operation. Real data from a 10 kW photovoltaic system is used to calculate a dynamic H2 feed flow, assuming that electrolysis is capable to react on power changes accordingly. The required CO flow for synthesis could either originate from a constantly operated biomass gasification or from a direct air capture that produces CO2; the latter is assumed to be dynamically converted into synthesis gas with additional hydrogen. Thus two cases exist, the input is constantly changing in syngas ratio or flow rate. These input data were used to perform challenging experiments with the pilot scale setup. Both cases were compared. While it appeared that a fluctuating flow rate is tolerable for constant product composition, a coupled temperature-conversion relationship model was developed. It allows keeping the conversion and product distribution constant despite highly dynamic feed flow conditions.
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20
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Fischer KL, Langer MR, Freund H. Dynamic Carbon Dioxide Methanation in a Wall-Cooled Fixed Bed Reactor: Comparative Evaluation of Reactor Models. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02863] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Konrad L. Fischer
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik, Cauerstr. 3, 91058 Erlangen, Germany
| | - Moritz R. Langer
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik, Cauerstr. 3, 91058 Erlangen, Germany
| | - Hannsjörg Freund
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik, Cauerstr. 3, 91058 Erlangen, Germany
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21
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Wenzel M, Sundmacher K. Derivation of rate equations for equilibrium limited gas-solid reactions. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.03.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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22
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Multiscale modeling of monolithic sponges as catalyst carrier for the methanation of carbon dioxide. CHEMICAL ENGINEERING SCIENCE: X 2019. [DOI: 10.1016/j.cesx.2019.100016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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23
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24
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Moioli E, Gallandat N, Züttel A. Parametric sensitivity in the Sabatier reaction over Ru/Al2O3 – theoretical determination of the minimal requirements for reactor activation. REACT CHEM ENG 2019. [DOI: 10.1039/c8re00133b] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The parametric sensitivity of the Sabatier reaction is investigated, determining the requirements for reactor activation.
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Affiliation(s)
- Emanuele Moioli
- Laboratory of Materials for Renewable Energy (LMER)
- Institute of Chemical Sciences and Engineering (ISIC)
- Basic Science Faculty (SB)
- École Polytechnique Fédérale de Lausanne (EPFL) Valais/Wallis
- Energypolis
| | - Noris Gallandat
- Laboratory of Materials for Renewable Energy (LMER)
- Institute of Chemical Sciences and Engineering (ISIC)
- Basic Science Faculty (SB)
- École Polytechnique Fédérale de Lausanne (EPFL) Valais/Wallis
- Energypolis
| | - Andreas Züttel
- Laboratory of Materials for Renewable Energy (LMER)
- Institute of Chemical Sciences and Engineering (ISIC)
- Basic Science Faculty (SB)
- École Polytechnique Fédérale de Lausanne (EPFL) Valais/Wallis
- Energypolis
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25
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Raghu AK, Kaisare NS. Analysis of the autothermal operability of the Sabatier reaction in a heat-recirculating microreactor using CFD. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00183b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Sabatier reaction in a U-bend micro-reactor benefits from a favourable temperature profile owing to heat recirculation, which improves methane yield and enables stable operation even with feed at ambient temperature.
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Affiliation(s)
- Aswathy K. Raghu
- Department of Chemical Engineering
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Niket S. Kaisare
- Department of Chemical Engineering
- Indian Institute of Technology Madras
- Chennai 600036
- India
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26
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Bremer J, Sundmacher K. Operation range extension via hot-spot control for catalytic CO2 methanation reactors. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00147f] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Intelligent coolant temperature adjustment allows hot-spot stabilization in exothermic fixed-bed reactors at the industrial-scale and provides additional operating points with increased performance and moderate catalyst temperatures.
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Affiliation(s)
- Jens Bremer
- Max Planck Institute for Dynamics of Complex Technical Systems
- 39106 Magdeburg
- Germany
| | - Kai Sundmacher
- Max Planck Institute for Dynamics of Complex Technical Systems
- 39106 Magdeburg
- Germany
- Otto-von-Guericke University
- 39106 Magdeburg
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Fache A, Marias F, Guerré V, Palmade S. Optimization of fixed-bed methanation reactors: Safe and efficient operation under transient and steady-state conditions. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.08.044] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Liesche G, Sundmacher K. Identification of Key Transport Phenomena in High-Temperature Reactors: Flow and Heat Transfer Characteristics. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03955] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Georg Liesche
- Max Planck Institute for Dynamics of Complex Technical Systems, Department Process Systems Engineering, Sandtorstrasse 1, D-39106 Magdeburg, Germany
| | - Kai Sundmacher
- Max Planck Institute for Dynamics of Complex Technical Systems, Department Process Systems Engineering, Sandtorstrasse 1, D-39106 Magdeburg, Germany
- Otto-von-Guericke-University Magdeburg, Department Process Systems Engineering, Universitätsplatz 2, D-39106 Magdeburg, Germany
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Bremer J, Sundmacher K. Flexible Production of Synthetic Methane: Dynamic Operation and Control of Fixed-Bed Methanation Reactors. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- J. Bremer
- Max Planck Institute for Dynamics of Complex Technical Systems; Process Systems Engineering; Sandtorstraße 1 39106 Magdeburg Germany
| | - K. Sundmacher
- Max Planck Institute for Dynamics of Complex Technical Systems; Process Systems Engineering; Sandtorstraße 1 39106 Magdeburg Germany
- Otto-von-Guericke University; Lehrstuhl Systemverfahrenstechnik; Universitätsplatz 2 39106 Magdeburg Germany
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Matthischke S, Roensch S, Güttel R. Start-up Time and Load Range for the Methanation of Carbon Dioxide in a Fixed-Bed Recycle Reactor. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00755] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Steffi Matthischke
- DBFZ − Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany
- Institute of Chemical Engineering, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Stefan Roensch
- DBFZ − Deutsches Biomasseforschungszentrum gemeinnützige GmbH, Torgauer Straße 116, 04347 Leipzig, Germany
- Department of Industrial Engineering, Ernst-Abbe-Hochschule Jena, Carl-Zeiss-Promenade 2, 07745 Jena, Germany
| | - Robert Güttel
- Institute of Chemical Engineering, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
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