Chemie Ingenieur Technik最新文献

{"title":"A Short-Cut Design Approach to Evaluate Reboiler Designs in Vapor Recompression Scenarios","authors":"Franziska Lais,&nbsp;Dr. Ing. Stephan Scholl,&nbsp;Dr. Ing. Katharina Jasch","doi":"10.1002/cite.70059","DOIUrl":"https://doi.org/10.1002/cite.70059","url":null,"abstract":"<p>Thermal separation processes such as distillation and rectification require significant thermal energy, thereby consuming over 40 % of the chemical industry's global energy. Mechanical vapor recompression (MVR) effectively reduces distillation steam demand by recycling waste heat in the column reboiler. However, reboiler design and feasibility in combination with MVR systems are not well explored. This paper presents a model approach that integrates MVR requirements into reboiler design, useful for initial stages of process development with sparse data or early viability checks. The model builds on a configuration–sizing–selection framework and streamlines complex methods through assumptions and boundary conditions. Using iterative estimation alongside thermodynamic and fluid-dynamic constraints within set geometric limits, it defines operational ranges and geometry and evaluates feasibility of reboiler designs in MVR scenarios.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"98 7","pages":"392-405"},"PeriodicalIF":1.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.70059","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148534003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical Vapor Recompression—Challenges and Solutions in Existing Processes","authors":"Dr. Jochen Hammerschmidt,&nbsp;Dr. Jürgen Bausa,&nbsp;Wim Blankers,&nbsp;Matthias Böhm","doi":"10.1002/cite.70062","DOIUrl":"https://doi.org/10.1002/cite.70062","url":null,"abstract":"<p>Heat integration is a key factor for an energy-efficient and profitable process. Although many processes are overall exothermic, additional heating and cooling is often provided by a power plant using fossil fuel. Main reasons are the unfavorable temperature levels of the respective process streams, making heat integration impossible. Mechanical vapor recompression (MVR) can help to overcome this problem and reduce the overall energy consumption and CO₂ emission of a process. In existing plants (brownfield) retrofitting, an MVR is often very challenging. Available space, infrastructure, utilities as well as the need to provide stable operation of the process also for non-stationary conditions are important points to consider. Generating and compressing steam with connection to an existing steam grid can help to reduce the complexity and enable a realization of MVR in a brownfield environment.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"98 7","pages":"406-409"},"PeriodicalIF":1.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148522773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elektrifizierung Chemischer Prozesse—Herausforderungen und Lösungsansätze","authors":"Julia Riese,&nbsp;Katharina Jasch","doi":"10.1002/cite.70138","DOIUrl":"https://doi.org/10.1002/cite.70138","url":null,"abstract":"<p>Liebe Leserinnen und Leser,\u0000die chemische Industrie steht vor einer Zeitenwende: geopolitische Verwerfungen, steigende Energiepreise und verbindliche Klimaziele erzwingen eine grundlegende Transformation—und Strom rückt dabei ins Zentrum. Die Internationale Energie Agentur spricht bereits vom „Age of Electricity“, und die Frage ist längst nicht mehr ob, sondern wie die Elektrifizierung chemischer Prozesse gelingen kann. Genau dieser Frage widmet sich das vorliegende Themenheft und gibt Einblicke in damit verbundene Entwicklungen zur Stärkung der klimaneutralen Produktion.</p><p>Ein wesentlicher Baustein zur Elektrifizierung ist der Einsatz von offenen oder geschlossenen Wärmepumpen innerhalb der Produktionsprozesse bzw. der standortspezifischen Energieversorgungssysteme. Wärmepumpen nutzen dabei systematisch die vielfach vorhandenen, jedoch bislang ungenutzten Abwärmeströme einer Produktion und heben diese auf ein thermodynamisch nutzbares Temperaturniveau. Wenn dabei für den Betrieb eine CO₂-arme Stromquelle genutzt wird, ergeben sich erhebliche CO₂-Minderungspotentiale für die Bereitstellung der in den Produktionsprozessen notwendigen thermischen Energie. Dabei ist allerdings zu beachten, dass die Integration einer Wärmepumpe mit nicht unerheblichen Kosten verbunden ist, wodurch der passgenauen Auswahl von Technologie und Integrationspunkt eine besondere Bedeutung zukommt. Eine ganze Reihe der in diesem Themenheft gebündelten Beiträge adressiert genau diese Herausforderung.</p><p>Neben der Integration von Wärmepumpen eröffnen elektrochemische Synthesewege sowie die direkte Elektrifizierung von Prozessapparaten weitere vielversprechende Pfade. Diese Ansätze bieten nicht nur Potenziale zur CO₂-Minderung, sondern stellen etablierte Verfahren grundlegend in Frage—mit allen damit verbundenen technischen und wirtschaftlichen Chancen und Herausforderungen. Auch diesen Aspekten der Elektrifizierung widmen sich ausgewählte Beiträge in diesem Themenheft und liefern dabei sowohl technische Einblicke als auch erste Bewertungen des jeweiligen Potenzials.</p><p>Die Beiträge in diesem Themenheft zeigen die Breite der aktuellen Herausforderungen auf und diskutieren mögliche Lösungsansätze aus akademischer und industrieller Perspektive. Gleichzeitig werfen sie ein Schlaglicht auf das Tutzing Symposium 2026, welches unter dem Titel „Electrification of the Chemical Industry“, federführend organisiert durch die Fachsektion Chemische Reaktionstechnik, ebenfalls Konzepte und Strategien zur Elektrifizierung chemischer Prozesse adressiert und zu vertiefenden Diskussionen einlädt.</p><p>Wir hoffen, dass die Beiträge des Themenheftes Impulse geben—für die eigene Forschung, für die Praxis und für den weiteren Dialog—und wünschen Ihnen eine inspirierende Lektüre.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"98 7","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.70138","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148533382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Methodology to Integrate Closed-Cycle Heat Pumps into Batch Distillation Columns","authors":"Philipp Dorn,&nbsp;Michael Libuda,&nbsp;Dr.-Ing. Thomas Meyer,&nbsp;Dr.-Ing. Christian Hoffmann,&nbsp;Dr.-Ing. habil. Jens-Uwe Repke,&nbsp;Dr. Stefan Elbel","doi":"10.1002/cite.70052","DOIUrl":"https://doi.org/10.1002/cite.70052","url":null,"abstract":"<p>As distillation is an energy-intensive separation technology, many heat integration schemes have been discussed to reduce its energy demand. So far, most studies have looked at continuous distillation, and studies for batch distillation columns (DCs) focused on direct vapor recompression. However, recompression is infeasible in the food or pharmaceutical industries as compressor oil may contaminate the products. This contribution presents a design procedure for integrating closed-loop heat pumps into batch DCs. The study prioritizes natural working fluids, as conventional ones usually have a high global warming potential. The results indicate that closed-loop heat pumps can reduce the energy demand of batch DCs.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"98 7","pages":"374-385"},"PeriodicalIF":1.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.70052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148533652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eine Auszeichnung für Forschung und Engagement unter Kriegsbedingungen","authors":"","doi":"10.1002/cite.70144","DOIUrl":"https://doi.org/10.1002/cite.70144","url":null,"abstract":"","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"98 7","pages":"333-334"},"PeriodicalIF":1.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148533376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Distillation Column Design on Potential for the Integration of Mechanical Vapor Recompression","authors":"Thorben Hochhaus,&nbsp;Sebastian Siepmann,&nbsp;Marcus Grünewald,&nbsp;Julia Riese","doi":"10.1002/cite.70074","DOIUrl":"https://doi.org/10.1002/cite.70074","url":null,"abstract":"<p>Electrification offers a promising route to reduce CO₂ 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, CO₂ emissions, and economic feasibility under varying pressure drops, preheating configurations, and cost and emission scenarios.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"98 7","pages":"410-419"},"PeriodicalIF":1.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.70074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148533672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential Analysis of On-Site Oxygen and Ozone Production for Wastewater Treatment Plants","authors":"Vincenta Franßen,&nbsp;Paul Goerdten,&nbsp;Christian Hoffmann,&nbsp;Jens-Uwe Repke","doi":"10.1002/cite.70080","DOIUrl":"https://doi.org/10.1002/cite.70080","url":null,"abstract":"<p>Large wastewater treatment plants (WWTPs) must reduce the concentration of micropollutants in their effluent until 2045, for example, via ozonation. The resulting oxygen demand can be covered by an on-site water electrolyzer, making WWTPs a promising location for sector coupling. Some case studies demonstrated the principal applicability of this process. Within this contribution, however, the overall potential for WWTPs in Germany and the valorization of both product gases are considered, focusing on the coverage of the annual ozone demand with oxygen. An economic and ecological analysis of the process is conducted depending on the used energy source. Compared to conventional production routes of both gases, this analysis reveals economic and ecological feasibility when renewable energy is used.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"98 7","pages":"420-428"},"PeriodicalIF":1.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.70080","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148534410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical Vapor Recompression in Distillation: A Framework to Analyze Technical Feasibility, Economic Competitiveness, and Ecological Benefits","authors":"Katharina Jasch,&nbsp;Franziska Lais,&nbsp;Hannes Schneider,&nbsp;Mandy Paschetag,&nbsp;Stephan Scholl","doi":"10.1002/cite.70096","DOIUrl":"https://doi.org/10.1002/cite.70096","url":null,"abstract":"<p>Mechanical vapor recompression (MVR) presents a promising alternative to conventional steam-driven distillation by substituting thermal energy input with electricity. This article presents a modular evaluation framework for the early assessment of MVR-based distillation scenarios for binary mixtures, considering equipment-specific aspects. To assess economic efficiency, aspects of technical feasibility are also included by using shortcut methods to identify technical solutions for compatible compressor and evaporator combinations. Designed for minimal user input and easy integration into the engineering workflow, the framework further enables the quantification of ecological impacts. The concept and main functions of thermodynamic potential analysis, preliminary compressor and column reboiler design, and economic and ecological performance indicator determination are outlined, and the most relevant results to users are summarized.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"98 7","pages":"342-354"},"PeriodicalIF":1.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.70096","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148532952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inhalt: Chem. Ing. Tech. 7/2026","authors":"","doi":"10.1002/cite.70142","DOIUrl":"https://doi.org/10.1002/cite.70142","url":null,"abstract":"","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"98 7","pages":"330-332"},"PeriodicalIF":1.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.70142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148533375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy Balancing of Electrochemical Alternatives to the Solvay Process","authors":"Tom Wenzel,&nbsp;Dr.-Ing. Holger Kryk,&nbsp;Dr.-Ing. Stefan Fogel,&nbsp;Dr.-Ing. Sebastian Felix Reinecke","doi":"10.1002/cite.70056","DOIUrl":"https://doi.org/10.1002/cite.70056","url":null,"abstract":"<p>Nowadays, soda (Na₂CO₃) is predominantly produced via the conventional Solvay process, generating CO₂ emissions contributing to climate change and saline CaCl₂ waste streams that pose local environmental concerns. Electrochemical alternatives, such as chlor-alkali electrolysis (CAE), have been explored for decades but still remain unused for large-scale production of soda. Bipolar electrodialysis promises lower energy consumption than CAE while generating the valuable by-product hydrochloric acid (HCl). This work provides mass and energy balances for electrochemical alternatives to the Solvay process. The results indicate a lower total energy requirement for the electrochemically based processes, whereas energy-related costs remain comparable to the Solvay process.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"98 7","pages":"355-363"},"PeriodicalIF":1.6,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.70056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148532723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}