@article{64158,
  abstract     = {{<jats:title>ABSTRACT</jats:title>
                  <jats:p>
                    Electrification offers a promising route to reduce CO
                    <jats:sub>2</jats:sub>
                    emissions in the chemical sector. In distillation, heat pump integration such as mechanical vapor recompression (MVR) can replace fossil‐based utilities, but column parameters like pressure drop should be accurately considered when assessing integration potential. This work discusses the effect of feed preheating and column pressure drop on MVR integration potential. The two binary separation tasks, methanol–water and benzene–toluene, are analyzed to identify energetically optimal preheater and MVR design. In addition, MVR integration in a bioethanol vacuum distillation sequence is evaluated for utility demand, CO
                    <jats:sub>2</jats:sub>
                    emissions, and economic feasibility under varying pressure drops, preheating configurations, and cost and emission scenarios.
                  </jats:p>}},
  author       = {{Hochhaus, Thorben and Siepmann, Sebastian and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  publisher    = {{Wiley}},
  title        = {{{Impact of Distillation Column Design on Potential for the Integration of Mechanical Vapor Recompression}}},
  doi          = {{10.1002/cite.70074}},
  year         = {{2026}},
}

@article{64159,
  abstract     = {{<jats:title>ABSTRACT</jats:title>
                  <jats:p>Separation processes, such as distillation and stripping, are highly energy‐intensive. Typically, energy is supplied indirectly via a reboiler, which is often associated with heat losses. We present a preliminary theoretical evaluation of a novel concept to supply energy directly inside the column using heatable structured packings. These packings can be produced by multi‐material 3D printing, resulting in a conductive inner layer and an insulating outer layer. Functioning as electric resistance heaters, these packings serve as heating elements. In this numerical study, we compared different scenarios of energy supply along the height of the column, including uniform distribution, applying a temperature profile, and using or omitting a reboiler.</jats:p>}},
  author       = {{Lutters, Nicole and Brüne, Sascha and Riese, Julia}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  publisher    = {{Wiley}},
  title        = {{{Preliminary Numerical Evaluation of Directly Heated Structured Packings to be Used for Separation Processes}}},
  doi          = {{10.1002/cite.70076}},
  year         = {{2026}},
}

@article{64876,
  abstract     = {{<jats:title>ABSTRACT</jats:title>
                  <jats:p>This study shows the applicability of ultrasonic sensors for measuring two‐phase layer heights in sieve tray columns under dynamic operating conditions. Although these sensors are known for their precision in stationary systems, their reliability under fluctuating flow conditions has remained unclear. To validate their accuracy, ultrasonic measurements were compared with both automated image analysis via a Python algorithm and manual video evaluation. Results show that ultrasonic sensors maintain high precision at moderate gas loads and with small hole diameters. Increased gas loads and turbulence, however, reduced measurement accuracy due to signal scattering. The findings highlight the potential of ultrasonic sensing for real‐time, noninvasive monitoring in dynamic multiphase systems.</jats:p>}},
  author       = {{Breuer, Niklas and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  publisher    = {{Wiley}},
  title        = {{{Application of Ultrasonic Sensors for Determining the Height of Dynamic Two‐Phase Layers in Tray Columns}}},
  doi          = {{10.1002/cite.70087}},
  year         = {{2026}},
}

@inproceedings{65267,
  author       = {{Hollenhorst, Viola and Riese, Julia and Kenig, Eugeny Y.}},
  location     = {{Luzern, Schweiz}},
  title        = {{{Investigation of Surface Roughness Effects on Flow Patterns and Thermal Performance in Additively Manufactured Channels}}},
  year         = {{2026}},
}

@inproceedings{65446,
  author       = {{Franke, Patrick and Lutters, Nicole and Riese, Julia and Kenig, Eugeny}},
  location     = {{Luzern (CH)}},
  title        = {{{Identification of multiple steady states in reactive absorption columns equipped with structured packings}}},
  year         = {{2026}},
}

@inbook{65599,
  author       = {{Schlüter, Alexander and Krogbäumker, Luisa and Böse, Kevin and Riese, Julia}},
  booktitle    = {{Hydrogen and Bioenergy}},
  isbn         = {{9780443404931}},
  publisher    = {{Elsevier}},
  title        = {{{Opportunities and obstacles for industrial applications}}},
  doi          = {{10.1016/b978-0-443-40493-1.00019-x}},
  year         = {{2026}},
}

@article{65754,
  abstract     = {{<jats:title>ABSTRACT</jats:title>
                  <jats:p>
                    The integration of heat pumps offers a promising route for electrifying chemical processes and reducing CO
                    <jats:sub>2</jats:sub>
                    emissions. Their feasibility strongly depends on the temperature levels and the quantities of available heat sources and sinks, which can be influenced by adjusting process operating parameters to enhance integration potential. The number and quality of these sources and sinks also determine suitable heat pump configurations and therefore the technical and economic viability of implementation. In addition, refrigerant selection is a critical factor, as it is restricted by regulations such as the F‐Gas Regulation. This study investigates how different operating parameters affect the integration potential of various heat pump configurations in a CO
                    <jats:sub>2</jats:sub>
                    absorption process using MEA as solvent. Furthermore, economic evaluations are carried out considering different electricity price scenarios and allowable refrigerants.
                  </jats:p>}},
  author       = {{Wloch, Johannes and Grünewald, Marcus and Riese, Julia}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  publisher    = {{Wiley}},
  title        = {{{Matching Heat Pump Configurations and Process Parameters for Cost‐Minimal Heat‐Integrated CO<sub>2</sub>-Capturing Process}}},
  doi          = {{10.1002/cite.70131}},
  year         = {{2026}},
}

@inproceedings{66007,
  abstract     = {{<jats:p>The reduction of CO2-emissions in the chemical industry is essential to meet European climate targets. Particularly, the reliance on fossil fuels for process heat supply is a key factor for CO2-emissions. Electrically driven compression heat pumps are a promising option to reduce fossil fuel consumption by upgrading low-temperature waste heat to a higher temperature level, provided that low-carbon electricity is available. However, the integration of heat pumps into chemical utility systems remains a challenge due to economic constraints and the high complexity associated with site-wide heat integration and retrofit of existing structures. This work presents a mixed-integer linear programming (MILP) approach for the optimization of utility systems with integrated heat pumps. To address computational complexity, candidate utility temperature levels are pre-selected, and feasible heat pump coefficients of performance (COP) are precomputed. The framework is applied to both greenfield and retrofit scenarios for a synthetic case study consisting of 400 process streams. In the greenfield scenario, optimal utility temperature levels and heat pump integration configurations are identified. For the retrofit scenario, temperature levels of an existing utility system are modified to reduce total annual costs (TAC). Additionally, sensitivity analysis is conducted to assess the influence of key economic and environmental parameters. The presented case studies demonstrate short solution times, highlighting the suitability of the proposed framework for screening studies and systematic sensitivity analyses in early-stage design and retrofit applications.</jats:p>}},
  author       = {{Hochhaus, Thorben and Grünewald, Marcus and Riese, Julia}},
  booktitle    = {{Systems and Control Transactions}},
  issn         = {{2818-4734}},
  publisher    = {{PSE Press}},
  title        = {{{Optimization of Site-wide Heat-Integrated Utility Systems with Heat Pumps using MILP}}},
  doi          = {{10.69997/sct.152209}},
  volume       = {{6}},
  year         = {{2026}},
}

@inproceedings{66008,
  abstract     = {{<jats:p>Heat pumps offer the possibility of reducing CO2-emissions in the chemical industry. However, the integration of heat pumps, especially in non-continuous processes, faces several challenges. Energy storage facilitates a way to enhance heat integration by providing a continuous supply of heat flows. By doing so, the question arises as to whether this implementation should be applied to the process or to the utility level. At the process level, there is usually more freedom, as one is not bound by the existing temperature levels of the utility system, which are mostly difficult to retrofit. Therefore, this study presents an approach that generates heat integration concepts at the process level based on two different criteria. These criteria influence which process streams are grouped for a storage implementation and therefore influence the heat integration. The aim is to maintain the heat flows as continuous as possible by integrated heat storages. Finally, the possible heat integration concept is evaluated in terms of energy efficiency by a know method for continuous process streams, here the pinch analysis.</jats:p>}},
  author       = {{Wloch, Johannes and Grünewald, Marcus and Riese, Julia}},
  booktitle    = {{Systems and Control Transactions}},
  issn         = {{2818-4734}},
  publisher    = {{PSE Press}},
  title        = {{{Development of a methodology for heat pump-based heat integration in batch processes}}},
  doi          = {{10.69997/sct.140728}},
  volume       = {{6}},
  year         = {{2026}},
}

@article{66059,
  author       = {{Kapustenko, Petro and Tovazhnyanskyy, Leonid and Arsenyeva, Olga and Riese, Julia and Varbanov, Petar Sabev}},
  issn         = {{1290-0729}},
  journal      = {{International Journal of Thermal Sciences}},
  publisher    = {{Elsevier BV}},
  title        = {{{Selection of the mini- and micro-channels geometry for improved heat recuperation in specific industrial conditions}}},
  doi          = {{10.1016/j.ijthermalsci.2026.111129}},
  volume       = {{229}},
  year         = {{2026}},
}

@article{66554,
  author       = {{Arsenyeva, Olga and Breuer, Niklas and Riepin, Yevhenii and Grünewald, Marcus and Riese, Julia}},
  issn         = {{2451-9049}},
  journal      = {{Thermal Science and Engineering Progress}},
  publisher    = {{Elsevier BV}},
  title        = {{{Method for estimation of plate heat exchanger design for a flexible methanol–water distillation column}}},
  doi          = {{10.1016/j.tsep.2026.104855}},
  year         = {{2026}},
}

@article{66764,
  abstract     = {{<jats:title>ABSTRACT</jats:title>
                  <jats:p>
                    Methane, synthesized from renewable hydrogen and biogenic CO
                    <jats:sub>2</jats:sub>
                    , can be a part of the transformation towards renewable energy carriers. A major engineering challenge is the optimization of the fixed‐bed reactor design, specifically the heat dissipation in regions of high reaction heat release. A mitigation concept is the introduction of inert material into the fixed bed, called catalyst dilution. In this study, a 1D continuity model is presented, which aims to predict catalyst superheating. This model is used in an exploratory study to identify system sensitivity and optimization parameters. Subsequently, an optimization framework for improving the reactor design is tested, resulting in a 148‐K reduction in peak catalyst temperature when using a 33.3 vol% catalyst dilution.
                  </jats:p>}},
  author       = {{Schmücker, Torben and Riese, Julia}},
  issn         = {{0009-286X}},
  journal      = {{Chemie Ingenieur Technik}},
  publisher    = {{Wiley}},
  title        = {{{Model‐Based Optimization Framework for Catalyst Dilution Applications in CO2‐Methanation Reactors}}},
  doi          = {{10.1002/cite.70162}},
  year         = {{2026}},
}

@article{66444,
  author       = {{Dechert, Christopher and Riese, Julia and Kenig, Eugeny}},
  issn         = {{0009-2509}},
  journal      = {{Chemical Engineering Science}},
  publisher    = {{Elsevier BV}},
  title        = {{{A comprehensive numerical study of the wetting behavior in structured packings with a direct consideration of the packing microstructure}}},
  doi          = {{10.1016/j.ces.2026.124635}},
  year         = {{2026}},
}

@article{62937,
  abstract     = {{Sandwich packings are assembled from two conventional structured packings with different geometrical surface areas stacked alternatingly within a separation column. When operated under partially flooded conditions, they provide significant mass transfer improvement compared to common structured packings. In this work, a rate-based model including novel mass transfer correlations is presented and validated using a comprehensive experimental database for the reactive absorption of CO2 into aqueous monoethanolamine. The proposed rate-based approach is capable of accounting for axial dispersion, thereby enabling the evaluation of the effect of liquid-phase backmixing on the mass transfer performance. The validated rate-based model is used to evaluate the separation performance of sandwich packings. Compared with structured packings, up to 10 % higher mass transfer rates are obtained.}},
  author       = {{Franke, Patrick and Schubert, Markus and Hampel, Uwe and Kenig, Eugeny Y.}},
  issn         = {{0009-2509}},
  journal      = {{Chemical Engineering Science}},
  keywords     = {{Sandwich packings Structured packings Rate-based approach Model validation Ultra-fast X-ray tomography}},
  publisher    = {{Elsevier BV}},
  title        = {{{A rate-based model for reactive separation columns with sandwich packings}}},
  doi          = {{10.1016/j.ces.2025.122681}},
  volume       = {{321}},
  year         = {{2025}},
}

@inproceedings{58539,
  author       = {{Franke, Patrick and Schubert, Markus and Hampel, Uwe and Kenig, Eugeny Y.}},
  booktitle    = {{Proceedings of the Dechema/VDI Jahrestreffen Fluidverfahrenstechnik 2025}},
  location     = {{Bochum}},
  title        = {{{Modeling reactive absorption in sandwich packings}}},
  year         = {{2025}},
}

@article{58672,
  author       = {{Al Trjman, Mohamad and Salten, Alexander Heinrich Johannes and Beule, Felix and Teutenberg, Dominik and Meschut, Gerson and Riese, Julia and Kenig, Eugeny}},
  issn         = {{0143-7496}},
  journal      = {{International Journal of Adhesion and Adhesives}},
  publisher    = {{Elsevier BV}},
  title        = {{{Viscous fingering in adhesive bonding}}},
  doi          = {{10.1016/j.ijadhadh.2025.103960}},
  volume       = {{139}},
  year         = {{2025}},
}

@article{58759,
  author       = {{Dechert, Christopher and Kenig, Eugeny Y.}},
  issn         = {{0009-2509}},
  journal      = {{Chemical Engineering Science}},
  publisher    = {{Elsevier BV}},
  title        = {{{Influence of microstructures on liquid spreading on inclined plates: A CFD based study}}},
  doi          = {{10.1016/j.ces.2025.121317}},
  year         = {{2025}},
}

@inproceedings{58761,
  author       = {{Dechert, Christopher and Riese, Julia and Franke, Patrick}},
  location     = {{Bochum}},
  title        = {{{Untersuchung zur Vergleichbarkeit von verschiedenen Methoden zur Bestimmung der effektiven Phasengrenzflächen}}},
  year         = {{2025}},
}

@inproceedings{58762,
  author       = {{Dechert, Christopher and Riese, Julia}},
  location     = {{Bochum}},
  title        = {{{Bewertung des Potentiales der Elektrobenetzung für Trennkolonnen}}},
  year         = {{2025}},
}

@article{58165,
  author       = {{Neumann, Maximilian and Xia, Marc and Pöschmann, René and Merkel, Amelie and Staud, Rolf and Schneider, Hannes and Ehlert, Thomas and Paschold, Jürgen and Müller, Steffen and Harding, Laura-Selin and Neukäufer, Johannes and Hiller, Christoph and Ausner, Ilja and Gäbler, Ansor and Chromik, Reiner and Maćkowiak, Jan and Maćkowiak, Jerzy and Sola Cervera, Jose Luis and Geipel, Christian and Brinkmann, Jost and Bausa, Jürgen and Zeck, Sebastian and Hapke, Mark and Forner, Florian and Habla, Florian and Knaup, Manuel and Schulz, Robin and Schultes, Michael and Harlacher, Thomas and Lutters, Nicole and Kenig, Eugeny and Jasch, Katharina and Paschetag, Mandy and Scholl, Stephan and Grünewald, Marcus and Brösigke, Georg and Repke, Jens-Uwe and Klein, Harald and Rehfeldt, Sebastian}},
  issn         = {{1383-5866}},
  journal      = {{Separation and Purification Technology}},
  publisher    = {{Elsevier BV}},
  title        = {{{Towards reliable HETP values: Lessons learned from standardized separation efficiency measurements}}},
  doi          = {{10.1016/j.seppur.2025.131436}},
  volume       = {{361}},
  year         = {{2025}},
}