@article{47562,
  author       = {{Herrmann, Felix and Grünewald, Marcus and Meijer, Tobias and Gardemann, Ulrich and Feierabend, Lukas and Riese, Julia}},
  issn         = {{0009-2509}},
  journal      = {{Chemical Engineering Science}},
  keywords     = {{Applied Mathematics, Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}},
  publisher    = {{Elsevier BV}},
  title        = {{{Operating window and flexibility of a lab-scale methanation plant}}},
  doi          = {{10.1016/j.ces.2022.117632}},
  volume       = {{254}},
  year         = {{2022}},
}

@article{47563,
  author       = {{Di Pretoro, Alessandro and Bruns, Bastian and Negny, Stéphane and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0098-1354}},
  journal      = {{Computers & Chemical Engineering}},
  keywords     = {{Computer Science Applications, General Chemical Engineering}},
  publisher    = {{Elsevier BV}},
  title        = {{{Demand response scheduling using derivative-based dynamic surrogate models}}},
  doi          = {{10.1016/j.compchemeng.2022.107711}},
  volume       = {{160}},
  year         = {{2022}},
}

@article{47560,
  abstract     = {{<jats:p>As a part of the worldwide efforts to substantially reduce CO2 emissions, power-to-fuel technologies offer a promising path to make the transport sector CO2-free, complementing the electrification of vehicles. This study focused on the coupling of Fischer–Tropsch synthesis for the production of synthetic diesel and kerosene with a high-temperature electrolysis unit. For this purpose, a process model was set up consisting of several modules including a high-temperature co-electrolyzer and a steam electrolyzer, both of which were based on solid oxide electrolysis cell technology, Fischer–Tropsch synthesis, a hydrocracker, and a carrier steam distillation. The integration of the fuel synthesis reduced the electrical energy demand of the co-electrolysis process by more than 20%. The results from the process simulations indicated a power-to-fuel efficiency that varied between 46% and 67%, with a decisive share of the energy consumption of the co-electrolysis process within the energy balance. Moreover, the utilization of excess heat can substantially to completely cover the energy demand for CO2 separation. The economic analysis suggests production costs of 1.85 €/lDE for the base case and the potential to cut the costs to 0.94 €/lDE in the best case scenario. These results underline the huge potential of the developed power-to-fuel technology.</jats:p>}},
  author       = {{Peters, Ralf and Wegener, Nils and Samsun, Remzi Can and Schorn, Felix and Riese, Julia and Grünewald, Marcus and Stolten, Detlef}},
  issn         = {{2227-9717}},
  journal      = {{Processes}},
  keywords     = {{Process Chemistry and Technology, Chemical Engineering (miscellaneous), Bioengineering}},
  number       = {{4}},
  publisher    = {{MDPI AG}},
  title        = {{{A Techno-Economic Assessment of Fischer–Tropsch Fuels Based on Syngas from Co-Electrolysis}}},
  doi          = {{10.3390/pr10040699}},
  volume       = {{10}},
  year         = {{2022}},
}

@article{47561,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Additive manufacturing is a promising tool for tailored solutions in chemical engineering. This applies in particular to the design of lab‐scale packed bed columns. We present experimental results to characterize a lab‐scale 3D printed structured metal packing and compare it to a conventional counterpart. The results indicate that necessary adjustments for the manufacturing process of the metal material have an influence on important operating parameters, resulting in higher specific pressure drop, slightly higher liquid holdup and lower mass transfer efficiency.</jats:p>}},
  author       = {{Riese, Julia and Reitze, Arnulf and Grünewald, Marcus}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  keywords     = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}},
  number       = {{7}},
  pages        = {{993--1001}},
  publisher    = {{Wiley}},
  title        = {{{Experimental Characterization of 3D Printed Structured Metal Packing with an Enclosed Column Wall}}},
  doi          = {{10.1002/cite.202200002}},
  volume       = {{94}},
  year         = {{2022}},
}

@article{47556,
  author       = {{Herrmann, Felix and Grünewald, Marcus and Meijer, Tobias and Gardemann, Ulrich and Riese, Julia}},
  issn         = {{0888-5885}},
  journal      = {{Industrial &amp; Engineering Chemistry Research}},
  keywords     = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}},
  number       = {{27}},
  pages        = {{9644--9657}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Performance of a Laboratory-Scale Methanation Plant with Catalyst Dilution under Dynamic Operating Conditions}}},
  doi          = {{10.1021/acs.iecr.2c00871}},
  volume       = {{61}},
  year         = {{2022}},
}

@article{47553,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Minimizing the emissions produced during the processing of biofuel, one aim is to reduce or completely replace the amount of the required fossil fuels used for internal process energy. For the transition of process energy from fossil to renewable energy sources, such as solar and wind, the energy demand of biomass processing must be adjustable to the fluctuating electricity supply. The flexible adjustment of a system's power demand to follow the current power generation is commonly referred to as demand side management (DSM). This contribution shows the results of a study on the implementation of DSM in biofuel biorefineries. By identifying reference concepts that could represent biofuel production plants, the specific mass and energy consumption for the individual process steps in these reference concepts was analyzed through a literature study. The annual throughput and energy consumption of process steps in biofuel production could then be calculated, enabling the identification of the most energy‐consuming process steps. Subsequently, possible flexible operating load ranges of the respective process steps in biofuel production were identified. These findings allowed an assessment of the potential for different process units of biorefinery systems concerning the quantitative adaptability of the electricity load – the theoretical DSM potential. An approximate theoretical DSM potential of 146 MW has been identified for biofuel production in Germany. This cumulated theoretical DSM potential in biofuel production was compared to that of other industrial processes, demonstrating the magnitude and importance of the implementation of DSM in biofuel production. © 2022 The Authors. Biofuels, Bioproducts and Biorefining published by Society of Industrial Chemistry and John Wiley &amp; Sons Ltd.</jats:p>}},
  author       = {{Röder, Lilli Sophia and Gröngröft, Arne and Grünewald, Marcus and Riese, Julia}},
  issn         = {{1932-104X}},
  journal      = {{Biofuels, Bioproducts and Biorefining}},
  keywords     = {{Renewable Energy, Sustainability and the Environment, Bioengineering}},
  number       = {{1}},
  pages        = {{56--70}},
  publisher    = {{Wiley}},
  title        = {{{Assessing the demand side management potential in biofuel production; A theoretical study for biodiesel, bioethanol, and biomethane in Germany}}},
  doi          = {{10.1002/bbb.2452}},
  volume       = {{17}},
  year         = {{2022}},
}

@article{47555,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Operating windows of conventional tray columns may not be large enough to ensure a sufficient separation with the current or future challenges of a volatile energy and raw material supply. Therefore, an innovative, segmented separation tray has been developed, which enlarges the operation window and thus leads to a higher flexibility, managing the challenges of higher volatility in downstream processes. In this contribution, a hydrodynamic characterization and the resulting lower operation limits of this segmented tray are presented. Furthermore, an approach to obtain shorter start‐up times for the column and a resulting faster response time to changes in the process are presented. The feasibility of this type of operation is evaluated by the investigation of the stability of the tray under new operation conditions.</jats:p>}},
  author       = {{Fasel, Henrik and Grünewald, Marcus and Riese, Julia}},
  issn         = {{2637-403X}},
  journal      = {{Journal of Advanced Manufacturing and Processing}},
  keywords     = {{General Medicine}},
  number       = {{1}},
  publisher    = {{Wiley}},
  title        = {{{On the lower operation limit and the gain of flexibility of an innovative segmented tray column}}},
  doi          = {{10.1002/amp2.10144}},
  volume       = {{5}},
  year         = {{2022}},
}

@article{47559,
  author       = {{Röder, Lilli Sophia and Gröngröft, Arne and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0363-907X}},
  journal      = {{International Journal of Energy Research}},
  keywords     = {{Energy Engineering and Power Technology, Fuel Technology, Nuclear Energy and Engineering, Renewable Energy, Sustainability and the Environment}},
  number       = {{13}},
  pages        = {{17733--17754}},
  publisher    = {{Hindawi Limited}},
  title        = {{{Options for demand side management in biofuel production: A systematic review}}},
  doi          = {{10.1002/er.8353}},
  volume       = {{46}},
  year         = {{2022}},
}

@inbook{47557,
  author       = {{Bruns, Bastian and Grünewald, Marcus and Riese, Julia}},
  booktitle    = {{Computer Aided Chemical Engineering}},
  isbn         = {{9780323958790}},
  issn         = {{1570-7946}},
  publisher    = {{Elsevier}},
  title        = {{{Optimal design for flexible operation with multiple fluctuating input parameters}}},
  doi          = {{10.1016/b978-0-323-95879-0.50144-2}},
  year         = {{2022}},
}

@article{47552,
  author       = {{Herrmann, Felix and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0360-3199}},
  journal      = {{International Journal of Hydrogen Energy}},
  keywords     = {{Energy Engineering and Power Technology, Condensed Matter Physics, Fuel Technology, Renewable Energy, Sustainability and the Environment}},
  number       = {{25}},
  pages        = {{9377--9389}},
  publisher    = {{Elsevier BV}},
  title        = {{{Model-based design of a segmented reactor for the flexible operation of the methanation of CO2}}},
  doi          = {{10.1016/j.ijhydene.2022.12.122}},
  volume       = {{48}},
  year         = {{2022}},
}

@article{47554,
  author       = {{Lilli, Lilli and Röder, Lilli and Gröngröft, Arne and Grünewald, Marcus and Riese, Julia}},
  journal      = {{Energy Proceedings}},
  publisher    = {{Applied Energy Innovation Institute (AEii)}},
  title        = {{{Demand Side Management in Biogas Plants - Dynamic Simulation of the Influence of Time-varying Agitation on Biogas Production}}},
  year         = {{2022}},
}

@article{47566,
  abstract     = {{<jats:p>The need for flexible process equipment has increased over the past decade in the chemical industry. However, process equipment such as distillation columns have limitations that significantly restrict flexible operation. We investigate a segmented tray column designed to allow flexible operation. The design consists of radial trays connected at the downcomer of each tray. Each segment can be operated separately, but depending on the capacity of the feed stream, additional segments can be activated or deactivated. The connection between the trays aims to transfer liquid from one stationary segment to the adjacent inactive segment, thereby reducing the time required for the start-up process. In a case study on the separation of methanol and water, we perform dynamic simulations to assess the reduction in the start-up time of inactive segments. The results confirm the advantages over standard tray designs. The segmented distillation column is a step towards improving the flexibility of separation operations.</jats:p>}},
  author       = {{Bruns, Bastian and Fasel, Henrik and Grünewald, Marcus and Riese, Julia}},
  issn         = {{2305-7084}},
  journal      = {{ChemEngineering}},
  keywords     = {{General Energy, General Engineering, General Chemical Engineering}},
  number       = {{4}},
  publisher    = {{MDPI AG}},
  title        = {{{Development of a Dynamic Modeling Approach to Simulate a Segmented Distillation Column for Flexible Operation}}},
  doi          = {{10.3390/chemengineering5040066}},
  volume       = {{5}},
  year         = {{2021}},
}

@article{47569,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>The trend of increasing product diversity and decreasing production amounts led to the requirement of higher flexibility of production processes of specialty chemicals. Conventional distillation columns, mostly equipped with structured packings, lack the flexibility to handle product changeovers and throughput. Thus, a newly designed distillation column for specialty chemicals is presented. A numerical model was implemented to analyze the potential of the wetted‐wall column. The simulation of the distillation of a binary methanol/water mixture demonstrated that the wetted‐wall column can generate the desired concentration and temperature profiles. Furthermore, analyses of the pressure drop and separation efficiency with the test system chlorobenzene/ethylbenzene were conducted.</jats:p>}},
  author       = {{Reitze, Arnulf and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0930-7516}},
  journal      = {{Chemical Engineering &amp; Technology}},
  keywords     = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}},
  number       = {{7}},
  pages        = {{1327--1335}},
  publisher    = {{Wiley}},
  title        = {{{Concept of a Flexible Wetted‐Wall Column for the Distillation of Specialty Chemicals}}},
  doi          = {{10.1002/ceat.202000468}},
  volume       = {{44}},
  year         = {{2021}},
}

@article{47564,
  author       = {{Reitze, Arnulf and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0888-5885}},
  journal      = {{Industrial &amp; Engineering Chemistry Research}},
  keywords     = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}},
  number       = {{1}},
  pages        = {{740--746}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Characterization of Liquid-Phase Distribution in 3D Printed Structured Packings with an Enclosed Column Wall}}},
  doi          = {{10.1021/acs.iecr.1c03931}},
  volume       = {{61}},
  year         = {{2021}},
}

@article{47567,
  author       = {{Bruns, Bastian and Di Pretoro, Alessandro and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0009-2509}},
  journal      = {{Chemical Engineering Science}},
  keywords     = {{Applied Mathematics, Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}},
  publisher    = {{Elsevier BV}},
  title        = {{{Flexibility analysis for demand-side management in large-scale chemical processes: An ethylene oxide production case study}}},
  doi          = {{10.1016/j.ces.2021.116779}},
  volume       = {{243}},
  year         = {{2021}},
}

@article{47565,
  author       = {{Bruns, Bastian and Di Pretoro, Alessandro and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0888-5885}},
  journal      = {{Industrial &amp; Engineering Chemistry Research}},
  keywords     = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}},
  number       = {{1}},
  pages        = {{605--620}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Indirect Demand Response Potential of Large-Scale Chemical Processes}}},
  doi          = {{10.1021/acs.iecr.1c03925}},
  volume       = {{61}},
  year         = {{2021}},
}

@article{47568,
  author       = {{Bruns, Bastian and Herrmann, Felix and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0888-5885}},
  journal      = {{Industrial &amp; Engineering Chemistry Research}},
  keywords     = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}},
  number       = {{20}},
  pages        = {{7678--7688}},
  publisher    = {{American Chemical Society (ACS)}},
  title        = {{{Dynamic Design Optimization for Flexible Process Equipment}}},
  doi          = {{10.1021/acs.iecr.1c00306}},
  volume       = {{60}},
  year         = {{2021}},
}

@article{47570,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Shortened product life cycles and increased demand for specialized products lead to more challenges in efficiently satisfying customer needs. Customer demands are increasingly uncertain in terms of type, location, and volume. As a result, more flexible chemical production plants are required. Modular small‐scale plants can be installed in transportation containers and, therefore, offer the flexibility of easy relocation, enabling production close to the customer or supplier. In a mathematical optimization model, the economic benefit of small‐scale plants in the specialty chemicals market of polymer production is analyzed. Different scenarios created from the real data of a chemical company show that the use of small‐scale plants may lead to a significant reduction in total costs that is mainly due to the transportation costs of raw materials and products.</jats:p>}},
  author       = {{Bruns, Bastian and Becker, Tristan and Riese, Julia and Lier, Stefan and Werners, Brigitte}},
  issn         = {{0930-7516}},
  journal      = {{Chemical Engineering &amp; Technology}},
  keywords     = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}},
  number       = {{6}},
  pages        = {{1148--1152}},
  publisher    = {{Wiley}},
  title        = {{{Efficient Production of Specialized Polymers with Highly Flexible Small‐Scale Plants}}},
  doi          = {{10.1002/ceat.202000591}},
  volume       = {{44}},
  year         = {{2021}},
}

@article{47571,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Im Rahmen dieses Beitrags werden experimentelle Untersuchungen zur Tropfenabscheidung im Einleitbereich eines Stoffaustauschapparates für zweiphasige Strömungen vorgestellt. Dafür wurde in einem Versuchsstand im Pilotmaßstab der qualitative Tropfenmitriss für unterschiedliche Tropfenabscheider eines Stoffaustauschapparates vermessen. Die daraus resultierenden Ergebnisse werden in diesem Beitrag hinsichtlich ihrer Aussagekraft zur Vermeidung von Tropfenmitriss diskutiert und bewertet. Darüber hinaus wird ein kurzer Ausblick über simulative Arbeiten zur Bestimmung des Tropfenmitriss gegeben.</jats:p>}},
  author       = {{Fasel, Henrik and Darvishsefat, Novin and Riese, Julia and Grünewald, Marcus}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  keywords     = {{Industrial and Manufacturing Engineering, General Chemical Engineering, General Chemistry}},
  number       = {{7}},
  pages        = {{1100--1106}},
  publisher    = {{Wiley}},
  title        = {{{Experimentelle Untersuchungen zum Tropfenmitriss im Feedeinleitbereich von Destillationskolonnen}}},
  doi          = {{10.1002/cite.202000242}},
  volume       = {{93}},
  year         = {{2021}},
}

@article{47580,
  abstract     = {{<jats:title>Abstract</jats:title><jats:p>Increasing economic and environmental challenges leads to the need for changes in the chemical industry. In this context, a promising approach is utilizing flexible apparatuses and flexible plants to react to changing boundary conditions. However, the concept of flexibility in chemical engineering, which originated in manufacturing, still lacks a comprehensive organization and categorization of different types of flexibility. Thus, in this work, the origin of flexibility in manufacturing is traced, and a literature overview on flexibility in chemical engineering is provided. Based on a subsequent cluster analysis, four types of flexibility are identified and defined. Furthermore, this work enables research on flexibility to be integrated into a general and consistent definition of flexibility. The definitions are applied to examples from literature to achieve comparability. While enabling the qualitative assessment of flexibility, this work identifies open research gaps regarding the quantification of flexibility.</jats:p>}},
  author       = {{Bruns, Bastian and Herrmann, Felix and Polyakova, Maria and Grünewald, Marcus and Riese, Julia}},
  issn         = {{2637-403X}},
  journal      = {{Journal of Advanced Manufacturing and Processing}},
  keywords     = {{General Medicine}},
  number       = {{4}},
  publisher    = {{Wiley}},
  title        = {{{A systematic approach to define flexibility in chemical engineering}}},
  doi          = {{10.1002/amp2.10063}},
  volume       = {{2}},
  year         = {{2020}},
}