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Comparative Simulation of Axial and Radial Fixed-Bed Reactors for Dimethyl Oxalate Synthesis 轴向与径向固定床合成草酸二甲酯反应器的比较模拟
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2025-06-09 DOI: 10.1002/cite.12008
Zhengqi Jiao, Dr. Lihong Zhao, Dr. Xu Liang, Dr. Yuanli Jiang, Feidong Xie, Zhenfeng Liu, Jinjun Xie, Jiaomin Cai, Wei Zheng
{"title":"Comparative Simulation of Axial and Radial Fixed-Bed Reactors for Dimethyl Oxalate Synthesis","authors":"Zhengqi Jiao,&nbsp;Dr. Lihong Zhao,&nbsp;Dr. Xu Liang,&nbsp;Dr. Yuanli Jiang,&nbsp;Feidong Xie,&nbsp;Zhenfeng Liu,&nbsp;Jinjun Xie,&nbsp;Jiaomin Cai,&nbsp;Wei Zheng","doi":"10.1002/cite.12008","DOIUrl":"https://doi.org/10.1002/cite.12008","url":null,"abstract":"<p>The catalytic co-coupling of carbon monoxide and methyl nitrite to synthesize dimethyl oxalate (DMO) is a crucial step in the conversion of syngas to ethylene glycol. Recent advancements in numerical simulation methodologies substantially enhanced the potential for optimizing chemical production processes, thereby improving cost effectiveness and efficiency. Numerical simulation techniques were applied to model a shell-and-tube reactor and a radial reactor. The distributions of pressure, velocity, reaction, and temperature fields were analyzed for both reactor configurations under similar operating conditions. The findings indicate that the radial reactor has different advantages, including a smaller volume, a more uniform temperature distribution, and a lower pressure drop, highlighting its potential benefits in the DMO synthesis process.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 7","pages":"759-771"},"PeriodicalIF":1.5,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589874","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}
引用次数: 0
Ecologic and Economic Evaluation of Combined Green Methanol Synthesis from CO2 and Biotechnological Upgrading to Value Products, Part 2: Economic Impact 二氧化碳绿色合成甲醇及生物技术升级到高价值产品的生态经济评价，第二部分：经济影响
IF 1.6 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2025-06-08 DOI: 10.1002/cite.12010
Dr. Mehran Taherkhani, Niels Hanau, Prof. Ralf Ehret
{"title":"Ecologic and Economic Evaluation of Combined Green Methanol Synthesis from CO2 and Biotechnological Upgrading to Value Products, Part 2: Economic Impact","authors":"Dr. Mehran Taherkhani,&nbsp;Niels Hanau,&nbsp;Prof. Ralf Ehret","doi":"10.1002/cite.12010","DOIUrl":"https://doi.org/10.1002/cite.12010","url":null,"abstract":"<p>The implementation of a techno-economic assessment on the use of green methanol from carbon dioxide and green hydrogen and the subsequent biotechnological conversion to value products is described. The operational expenditure and the capital expenditure were calculated for this process and compared to existing manufacturing routes, revealing that the process still needs to be optimized from an economic perspective.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 8-9","pages":"797-805"},"PeriodicalIF":1.6,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.12010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100973","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}
引用次数: 0
Why Engineers Should Read More Novels 为什么工程师应该多读小说
IF 1.6 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2025-06-08 DOI: 10.1002/cite.12011
Prof. Dr.-Ing. Dr. phil. Michael Kuhn
{"title":"Why Engineers Should Read More Novels","authors":"Prof. Dr.-Ing. Dr. phil. Michael Kuhn","doi":"10.1002/cite.12011","DOIUrl":"https://doi.org/10.1002/cite.12011","url":null,"abstract":"<p>Engineering work is much less solid and much airier than often assumed. And precisely for this reason, another rather airy activity is a good training for it: namely the reading of novels. I argue for two benefits of novel reading: first, reading exercises skills central to engineering design, such as imagination and fictionality competence; second, it trains the ethical capabilities of the reader, e.g., the ability of taking over other person's perspectives. These benefits are illustrated by using the examples of different novels in which the focus is laid especially on sustainability topics. Lastly, some uses of novels in engineering education are briefly discussed.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 8-9","pages":"852-859"},"PeriodicalIF":1.6,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.12011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145100972","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}
引用次数: 0
Development and Validation of a Laboratory-Scale Methanol Synthesis Mini-Plant and Digital Twin Simulation 实验室规模甲醇合成小型装置的开发与验证及数字孪生模拟
IF 1.6 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2025-05-27 DOI: 10.1002/cite.202500045
Timothy A. Nowak, Janne Reisch, Marc Siodlaczek, Prof. Bernd Epple, Prof. Alfons Drochner, Prof. Bastian Etzold
{"title":"Development and Validation of a Laboratory-Scale Methanol Synthesis Mini-Plant and Digital Twin Simulation","authors":"Timothy A. Nowak,&nbsp;Janne Reisch,&nbsp;Marc Siodlaczek,&nbsp;Prof. Bernd Epple,&nbsp;Prof. Alfons Drochner,&nbsp;Prof. Bastian Etzold","doi":"10.1002/cite.202500045","DOIUrl":"https://doi.org/10.1002/cite.202500045","url":null,"abstract":"<p>The utilization of CO<sub>2</sub> is becoming increasingly important for replacing fossil resources in the chemical industry. Methanol synthesis from CO<sub>2</sub> and H<sub>2</sub> can play a key role in providing a renewable base chemical. To develop full process concepts, a methanol mini-plant was set up, accompanied by a digital twin to investigate flexible feedstocks and the recycling of unconverted reactants, including product condensation. Experimental results showed good agreement with the digital twin, using recent kinetic models enabling systematic investigation of process parameters and their influence on in-loop gas composition to identify optimal reaction and feed gas conditions. Experiments with syngas from biomass gasification were conducted to assess the feasibility of industrially relevant CO<i><sub>x</sub></i> sources.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 8-9","pages":"834-851"},"PeriodicalIF":1.6,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202500045","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145102203","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}
引用次数: 0
Isoprene-Styrene Copolymers: Synthesis and Possible Use for Hydrogen Applications 异戊二烯-苯乙烯共聚物：合成和氢应用的可能用途
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2025-05-26 DOI: 10.1002/cite.12003
Maryam Moradi, Dr. Prokopios Georgopanos
{"title":"Isoprene-Styrene Copolymers: Synthesis and Possible Use for Hydrogen Applications","authors":"Maryam Moradi,&nbsp;Dr. Prokopios Georgopanos","doi":"10.1002/cite.12003","DOIUrl":"https://doi.org/10.1002/cite.12003","url":null,"abstract":"<p>The application of isoprene-styrene-based copolymers synthesized via surfactant-free controlled radical polymerization in the area of hydrogen research is presented. The polymers were synthesized in the laboratory and on a pilot scale and tested for their gas transport properties in correlation with the already known commercial poly(4-methyl-1-pentene). The results indicated that the new materials could have applications in terms of hydrogen applications due to the comparable permeability of hydrogen and, in some cases, increased selectivity of hydrogen over oxygen. Further future work will indicate how the new polymers will be utilized.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 7","pages":"710-713"},"PeriodicalIF":1.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.12003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589965","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}
引用次数: 0
Benefits and Challenges for Decentralized Use of Biomass as Feedstock for Chemicals 分散使用生物质作为化工原料的好处和挑战
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2025-05-26 DOI: 10.1002/cite.202500043
Jörn Viell, Stefan Theis, Ramona Götz, Alexandra Weber-Bernard, Alexander Walter Wilhelm Echtermeyer, Martin Lindmeyer
{"title":"Benefits and Challenges for Decentralized Use of Biomass as Feedstock for Chemicals","authors":"Jörn Viell,&nbsp;Stefan Theis,&nbsp;Ramona Götz,&nbsp;Alexandra Weber-Bernard,&nbsp;Alexander Walter Wilhelm Echtermeyer,&nbsp;Martin Lindmeyer","doi":"10.1002/cite.202500043","DOIUrl":"https://doi.org/10.1002/cite.202500043","url":null,"abstract":"<p>A systematic analysis of the decentral preconversion of lignocellulosic biomass to a chemical intermediate including technological, legal, and economic aspects is presented. A case study of levulinic acid production from 14 types of biomass shows average variations of +/− 15.5 % in yield obviously due to the properties of the raw materials. As high yield is a key for economic operation, this motivates preprocessing technologies tailored to the specific raw material. Technological, legal, and economic analyses show the prospect to establishing decentral preprocessing units. A comparison with central biorefineries demonstrates that economy of scale can be counterbalanced by cheaper feedstock cost and tailored feeding technology, which paves the way for a distributed sourcing of carbon for chemicals.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 6","pages":"642-651"},"PeriodicalIF":1.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202500043","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256491","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}
引用次数: 0
Effect of NaOH Steam on Swelling and Cleaning of Food Soil Layers 氢氧化钠蒸汽对食用土层溶胀和净化的影响
IF 1.6 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2025-05-26 DOI: 10.1002/cite.202500001
Dr. Enrico Fuchs, Siegfried Beckmann, Robin Klusch, Dr. Marc Mauermann
{"title":"Effect of NaOH Steam on Swelling and Cleaning of Food Soil Layers","authors":"Dr. Enrico Fuchs,&nbsp;Siegfried Beckmann,&nbsp;Robin Klusch,&nbsp;Dr. Marc Mauermann","doi":"10.1002/cite.202500001","DOIUrl":"https://doi.org/10.1002/cite.202500001","url":null,"abstract":"<p>In conventional cleaning-in-place (CIP) processes, only a small fraction of cleaning fluids directly contacts soil layers, limiting their effectiveness. Alternatively, steam can be incorporated into CIP procedures, offering advantages such as prolonged contact time, reduced chemical and water consumption, and enhanced wetting of spray shadow areas. This study specifically investigates the effect of steam during the swelling phase of soil layers. Experiments were conducted using steam, NaOH steam, water, and NaOH solution, respectively. Steam demonstrated an over 100 times higher swelling efficiency compared to liquids. Cleaning studies demonstrated that the use of steam achieved similar cleaning times to water-swollen soil layers, while NaOH resulted in shorter times, with steam being twice as resource-efficient.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 8-9","pages":"899-910"},"PeriodicalIF":1.6,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202500001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145102238","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}
引用次数: 0
Einfluss der Partikelgröße auf den Durchgangswiderstand von partikulären Systemen Effects of Particle Size on the Volume Resistance of Particular Systems Einfluss der Partikelgröße auf den Durchgangswiderstand von partikulären系统粒径对特定体系体积阻力的影响
IF 1.6 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2025-05-19 DOI: 10.1002/cite.12002
Prof. Ulrich Teipel, Sebastian Wolf, Alex Schreiber
{"title":"Einfluss der Partikelgröße auf den Durchgangswiderstand von partikulären Systemen\u0000 Effects of Particle Size on the Volume Resistance of Particular Systems","authors":"Prof. Ulrich Teipel,&nbsp;Sebastian Wolf,&nbsp;Alex Schreiber","doi":"10.1002/cite.12002","DOIUrl":"https://doi.org/10.1002/cite.12002","url":null,"abstract":"<p>The electrical properties of particles, in particular the volume resistance of disperse systems, are of special importance in a multitude of process engineering processes, especially in the field of product qualification. Since a disperse system is formed of two different phases and since the transportation of an electrical charge in a fluid is different from that in a solid, the volume resistance of bulk particles heavily depends on the properties of the particles and the fluid. In this work, the dependency of volume resistance on product properties, i.e. particle size and dispersity in air, was investigated in a concentric measuring cell.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 8-9","pages":"882-889"},"PeriodicalIF":1.6,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.12002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145101901","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}
引用次数: 0
CO2-Responsive Polymers for Membrane Applications: Synthesis and Adsorption Performance 膜用二氧化碳响应聚合物：合成和吸附性能
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2025-05-15 DOI: 10.1002/cite.202500056
Emil Pashayev, Dr. Prokopios Georgopanos
{"title":"CO2-Responsive Polymers for Membrane Applications: Synthesis and Adsorption Performance","authors":"Emil Pashayev,&nbsp;Dr. Prokopios Georgopanos","doi":"10.1002/cite.202500056","DOIUrl":"https://doi.org/10.1002/cite.202500056","url":null,"abstract":"<p>The pressing need to address climate change has driven research into novel CO<sub>2</sub> capture materials. Here, the synthesis of CO<sub>2</sub>-responsive diblock copolymers, i.e., poly(<i>N</i>-[3-(dimethylamino)propyl]-acrylamide)-<i>b</i>-poly(methyl methacrylate) (PDMAPAm-<i>b</i>-PMMA) through a two-step RAFT polymerization process, as well as the use of the synthesized diblock copolymer as a membrane for CO<sub>2</sub> capture were investigated. The resulting diblock copolymer features distinct segments with different properties. The PDMAPAm segment offers CO<sub>2</sub>-responsive characteristics, while the PMMA segment provides mechanical stability. The gas transport properties of the fabricated thin-film composite membrane composed of PDMAPAm-<i>b</i>-PMMA or PDMAPAm and polydimethylsiloxane with a gutter layer were measured and the CO<sub>2</sub> adsorption behavior of both PDMAPAm and PDMAPAm-<i>b</i>-PMMA was evaluated. The copolymer exhibits responsiveness to CO<sub>2</sub> and can be customized for use in the fabrication of membranes and membrane adsorbers for direct air capture technologies.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 7","pages":"703-709"},"PeriodicalIF":1.5,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202500056","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144589933","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}
引用次数: 0
Green Ammonia as a Decentralized, Cross-Sector Energy Vector for the German Energy Transition 绿色氨作为德国能源转型的分散、跨部门能源载体
IF 1.5 4区 工程技术
Chemie Ingenieur Technik Pub Date : 2025-05-13 DOI: 10.1002/cite.202500020
Dr. Clara Maria Watermann, Dr. Tim Nitsche, Dr. Lénárd-István Csepei, Dr. Andreas Menne, Dr. Barbara Zeidler-Fandrich
{"title":"Green Ammonia as a Decentralized, Cross-Sector Energy Vector for the German Energy Transition","authors":"Dr. Clara Maria Watermann,&nbsp;Dr. Tim Nitsche,&nbsp;Dr. Lénárd-István Csepei,&nbsp;Dr. Andreas Menne,&nbsp;Dr. Barbara Zeidler-Fandrich","doi":"10.1002/cite.202500020","DOIUrl":"https://doi.org/10.1002/cite.202500020","url":null,"abstract":"<p>The significance of ammonia as a carbon-free energy carrier is increasing amid the energy transition, especially for long-distance transport. The Fraunhofer flagship project “AmmonVektor” combines the competence of eight Fraunhofer Institutes to develop innovative technologies for decentralized ammonia synthesis, utilization, and logistics. The aim is to establish ammonia as a key technology to enhance Germany's energy sovereignty. The research focuses on developing flexible ammonia synthesis processes and robust ammonia cracking technologies with energy-efficient reactor designs and economically competitive catalysts. Additionally, innovative business models are investigated. This research ensures a sustainable energy supply while supporting UN climate goals.</p>","PeriodicalId":9912,"journal":{"name":"Chemie Ingenieur Technik","volume":"97 6","pages":"599-607"},"PeriodicalIF":1.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cite.202500020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256115","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}
引用次数: 0
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