Mattia Turetta, Alberto Bertucco, Filippo Briani, Elena Barbera
The osmotically assisted reverse osmosis (OARO) process is gaining attention for cost-effective aqueous solution concentration. However, there is a lack of pilot-scale studies. This research used two spiral-wound modules in a pilot-scale plant. The first one, an adapted commercial reverse osmosis module, showed no positive results, likely due to excessive membrane thickness and high internal concentration polarization. In contrast, the second one consisting of a novel forward osmosis prototype demonstrated promising outcomes, achieving water fluxes exceeding 2 L m−2 h−1 even at high salt concentrations (50 g L−1) and relatively low applied pressures (above 12 bar). The study highlights OARO potential, underscores limitations, and emphasizes the need for dedicated module design.
{"title":"Pilot-Scale Evaluation of Spiral-Wound Modules in Osmotically Assisted Reverse Osmosis","authors":"Mattia Turetta, Alberto Bertucco, Filippo Briani, Elena Barbera","doi":"10.1002/ceat.202300553","DOIUrl":"10.1002/ceat.202300553","url":null,"abstract":"<p>The osmotically assisted reverse osmosis (OARO) process is gaining attention for cost-effective aqueous solution concentration. However, there is a lack of pilot-scale studies. This research used two spiral-wound modules in a pilot-scale plant. The first one, an adapted commercial reverse osmosis module, showed no positive results, likely due to excessive membrane thickness and high internal concentration polarization. In contrast, the second one consisting of a novel forward osmosis prototype demonstrated promising outcomes, achieving water fluxes exceeding 2 L m<sup>−2</sup> h<sup>−1</sup> even at high salt concentrations (50 g L<sup>−1</sup>) and relatively low applied pressures (above 12 bar). The study highlights OARO potential, underscores limitations, and emphasizes the need for dedicated module design.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"47 10","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141784442","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}
Bashir Abubakar Abdulkadir, Dr. Herma Dina Setiabudi
This review highlights the promising potential of multi-walled carbon nanotubes (MWCNTs) for solid-state hydrogen storage due to their high surface area, low mass density, and chemical stability. Recent advances in doping and functionalization of MWCNTs have demonstrated enhanced hydrogen adsorption capacities that are closer to the United States Department of Energy targets. Transition metal atom doping has been shown to significantly improve hydrogen binding through spillover mechanisms. Additionally, metal doping of MWCNTs exhibited impressive gravimetric and volumetric hydrogen storage capacities. These developments represent a crucial step toward realizing safe, efficient, and cost-effective solid-state hydrogen storage solutions enabled by tailored MWCNTs for clean energy applications. Hence, this review aims to summarize the findings on the use of MWCNTs for hydrogen storage, where challenges are discussed and recommendations are provided.
{"title":"Recent Advances in Multi-Walled Carbon Nanotubes for High-Efficient Solid-State Hydrogen Storage: A Review","authors":"Bashir Abubakar Abdulkadir, Dr. Herma Dina Setiabudi","doi":"10.1002/ceat.202400067","DOIUrl":"10.1002/ceat.202400067","url":null,"abstract":"<p>This review highlights the promising potential of multi-walled carbon nanotubes (MWCNTs) for solid-state hydrogen storage due to their high surface area, low mass density, and chemical stability. Recent advances in doping and functionalization of MWCNTs have demonstrated enhanced hydrogen adsorption capacities that are closer to the United States Department of Energy targets. Transition metal atom doping has been shown to significantly improve hydrogen binding through spillover mechanisms. Additionally, metal doping of MWCNTs exhibited impressive gravimetric and volumetric hydrogen storage capacities. These developments represent a crucial step toward realizing safe, efficient, and cost-effective solid-state hydrogen storage solutions enabled by tailored MWCNTs for clean energy applications. Hence, this review aims to summarize the findings on the use of MWCNTs for hydrogen storage, where challenges are discussed and recommendations are provided.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"48 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141741116","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}
Dr. Zhenghui Li, Prof. Shunchun Yao, Da Chen, Longqian Li, Prof. Zhimin Lu, Prof. Zhuliang Yu
Accurate prediction of nitrogen oxide (NOx) emission is crucial for effectively controlling pollution in municipal solid waste incineration processes. However, it is challenging to construct a NOx emission prediction model with high prediction accuracy and easy engineering application. To address this, this paper proposes a robust and easily applicable NOx emission trend prediction model oriented to engineering applications, utilizing the partial least squares (PLS) method with the time series reconstruction and exponential weighting (TS-EW-PLS). The model is verified using operational data from an actual waste incineration process, and comparative analysis with the PLS model showed that the TS-EW-PLS model achieved a remarkable improvement of 27–38 % in prediction performance.
{"title":"NOx Emission Trend Prediction for the Waste Incineration Process Based on Partial Least Squares with the Time Series Reconstruction and Exponential Weighting","authors":"Dr. Zhenghui Li, Prof. Shunchun Yao, Da Chen, Longqian Li, Prof. Zhimin Lu, Prof. Zhuliang Yu","doi":"10.1002/ceat.202300524","DOIUrl":"10.1002/ceat.202300524","url":null,"abstract":"<p>Accurate prediction of nitrogen oxide (NOx) emission is crucial for effectively controlling pollution in municipal solid waste incineration processes. However, it is challenging to construct a NOx emission prediction model with high prediction accuracy and easy engineering application. To address this, this paper proposes a robust and easily applicable NOx emission trend prediction model oriented to engineering applications, utilizing the partial least squares (PLS) method with the time series reconstruction and exponential weighting (TS-EW-PLS). The model is verified using operational data from an actual waste incineration process, and comparative analysis with the PLS model showed that the TS-EW-PLS model achieved a remarkable improvement of 27–38 % in prediction performance.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"47 10","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141741117","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}
Dr. Kwanghwi Kim, Ms. Hyunji Lim, Dr. Hyun Sic Park, Ms. Jo Hong Kang, Prof. Jinwon Park, Dr. Hojun Song
Sulfur dioxide (SO2) emissions from ship exhausts pose serious health and environmental concerns. Herein, the SO2 absorption and desorption characteristics of tertiary amines with different functional groups were explored under simulated ship exhaust gas conditions. Tertiary amines with electron-donating groups had superior absorption performance to those with electron-withdrawing groups, and highly polar absorbents exhibited enhanced SO2 absorption loading. Dimethylaniline (DMA) showed excellent desorption performance, outperforming other absorbents (amino acids, ionic liquids, and deep eutectic solvents) in terms of cyclic capacity. Thus, tertiary amines, especially DMA, can be potentially used for the prevention of SO2 emissions from ship exhausts and other desulfurization applications.
{"title":"Capture of Sulfur Dioxide in Ship Exhaust Gas by Tertiary Amine Absorbents","authors":"Dr. Kwanghwi Kim, Ms. Hyunji Lim, Dr. Hyun Sic Park, Ms. Jo Hong Kang, Prof. Jinwon Park, Dr. Hojun Song","doi":"10.1002/ceat.202300328","DOIUrl":"10.1002/ceat.202300328","url":null,"abstract":"<p>Sulfur dioxide (SO<sub>2</sub>) emissions from ship exhausts pose serious health and environmental concerns. Herein, the SO<sub>2</sub> absorption and desorption characteristics of tertiary amines with different functional groups were explored under simulated ship exhaust gas conditions. Tertiary amines with electron-donating groups had superior absorption performance to those with electron-withdrawing groups, and highly polar absorbents exhibited enhanced SO<sub>2</sub> absorption loading. Dimethylaniline (DMA) showed excellent desorption performance, outperforming other absorbents (amino acids, ionic liquids, and deep eutectic solvents) in terms of cyclic capacity. Thus, tertiary amines, especially DMA, can be potentially used for the prevention of SO<sub>2</sub> emissions from ship exhausts and other desulfurization applications.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"47 10","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141741118","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}
This study investigates the potential of a salt bridge-mediated microbial fuel cell (MFC) for power generation and wastewater sludge treatment in breweries. Unlike traditional “one-parameter-at-a-time” methodologies, this study uses a three-variable Box–Behnken design response surface methodology to optimize critical MFC operational parameters. The effects of parameters such as solution pH, salt bridge molarity, and temperature were studied in the range of 4 to 10, 1 to 5 M, and 20 to 45 g L−1. The optimum operating parameters were found to be solution pH of 5.853, salt bridge molarity of 3.343 M, and temperature of 32.5 °C for chemical oxygen demand and biological oxygen demand removal efficiencies of 92.485 % and 88.51 %, respectively. Temperature was found to be the most significant factor affecting the reactor's performance.
{"title":"Optimization of Microbial Fuel Cell Operational Parameters for the Treatment of Brewery Sludge","authors":"Hagos Mebrahtu Gebrehiwot, Shimelis Kebede Kassahun","doi":"10.1002/ceat.202300410","DOIUrl":"10.1002/ceat.202300410","url":null,"abstract":"<p>This study investigates the potential of a salt bridge-mediated microbial fuel cell (MFC) for power generation and wastewater sludge treatment in breweries. Unlike traditional “one-parameter-at-a-time” methodologies, this study uses a three-variable Box–Behnken design response surface methodology to optimize critical MFC operational parameters. The effects of parameters such as solution pH, salt bridge molarity, and temperature were studied in the range of 4 to 10, 1 to 5 M, and 20 to 45 g L<sup>−1</sup>. The optimum operating parameters were found to be solution pH of 5.853, salt bridge molarity of 3.343 M, and temperature of 32.5 °C for chemical oxygen demand and biological oxygen demand removal efficiencies of 92.485 % and 88.51 %, respectively. Temperature was found to be the most significant factor affecting the reactor's performance.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"47 10","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141643092","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}
An internal thermally coupled air separation column (ITCASC) process is an effective energy-saving technology in the air separation process. However, a large economic investment is a crucial factor for the widespread use of this technology in practical applications. In this article, an alternative configuration design, namely, top-integrated (T-ITCASC), bottom-integrated (B-ITCASC), and top-bottom-integrated ITCASC (T-B-ITCASC) with a focus on energy savings and economic feasibility are studied. A rigorous optimization based on a nonlinear interior-point algorithm was developed by integrating the dynamic model into the optimization formulation. In the context of ITCASC process design and optimization, numerical simulations demonstrated that T-ITCASC, B-ITCASC, and T-B-ITCASC configurations improved energy-saving potential and reduced capital investment, compared to the F-ITCASC and conventional air separation column (CASC) configurations. Among these optimized configurations, the T-B-ITCASC configuration is preferred.
{"title":"Economic Optimization of Internal Thermally Coupled Air Separation Column Configurations","authors":"Hamedalneel Babiker Aboh Hamid, Xinggao Liu","doi":"10.1002/ceat.202300546","DOIUrl":"10.1002/ceat.202300546","url":null,"abstract":"<p>An internal thermally coupled air separation column (ITCASC) process is an effective energy-saving technology in the air separation process. However, a large economic investment is a crucial factor for the widespread use of this technology in practical applications. In this article, an alternative configuration design, namely, top-integrated (T-ITCASC), bottom-integrated (B-ITCASC), and top-bottom-integrated ITCASC (T-B-ITCASC) with a focus on energy savings and economic feasibility are studied. A rigorous optimization based on a nonlinear interior-point algorithm was developed by integrating the dynamic model into the optimization formulation. In the context of ITCASC process design and optimization, numerical simulations demonstrated that T-ITCASC, B-ITCASC, and T-B-ITCASC configurations improved energy-saving potential and reduced capital investment, compared to the F-ITCASC and conventional air separation column (CASC) configurations. Among these optimized configurations, the T-B-ITCASC configuration is preferred.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"47 9","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141642287","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}
Milad Amiri, Jarosław Mikielewicz, Paweł Ziółkowski, Dariusz Mikielewicz
In the pursuit of mitigating CO2 emissions, this study investigates the optimization of CO2 purification within a negative CO2 emission power plant using a spray ejector condenser (SEC) coupled with a separator. The approach involves direct-contact condensation of vapor, primarily composed of an inert gas (CO2), facilitated by a subcooled liquid spray. A comprehensive analysis is presented, employing a numerical model to simulate a cyclone separator under various SEC outlet conditions. Methodologically, the simulation, conducted in Fluent, encompasses three-dimensional, transient, and turbulent characteristics using the Reynolds stress model turbulent model and mixture model to replicate the turbulent two-phase flow within a gas–liquid separator. Structural considerations are delved into, evaluating the efficacy of single- and dual-inlet separators to enhance CO2 purification efficiency. The study reveals significant insights into the optimization process, highlighting a notable enhancement in separation efficiency within the dual-inlet cyclone, compared to its single inlet counterpart. Specifically, a 90.7 % separation efficiency is observed in the former, characterized by symmetrical flow patterns devoid of wavering CO2 cores, whereas the latter exhibits less desirable velocity vectors. Furthermore, the investigation explores the influence of key parameters, such as liquid volume fraction (LVF) and water droplet diameter, on separation efficiency. It is ascertained that a 10 % LVF with a water droplet diameter of 10 µm yields the highest separation efficiency at 90.7 %, whereas a 20 % LVF with a water droplet diameter of 1 µm results in a reduced efficiency of 50.79 %. Moreover, the impact of structural modifications, such as the addition of vanes, on separation efficiency and pressure drop is explored. Remarkably, the incorporation of vanes leads to a 9.2 % improvement in separation efficiency and a 16.8 % reduction in pressure drop at a 10 % LVF. The findings underscore the significance of structural considerations and parameter optimization in advancing CO2 capture technologies, with implications for sustainable energy production and environmental conservation.
{"title":"Optimizing CO2 Purification in a Negative CO2 Emission Power Plant","authors":"Milad Amiri, Jarosław Mikielewicz, Paweł Ziółkowski, Dariusz Mikielewicz","doi":"10.1002/ceat.202300568","DOIUrl":"10.1002/ceat.202300568","url":null,"abstract":"<p>In the pursuit of mitigating CO<sub>2</sub> emissions, this study investigates the optimization of CO<sub>2</sub> purification within a negative CO<sub>2</sub> emission power plant using a spray ejector condenser (SEC) coupled with a separator. The approach involves direct-contact condensation of vapor, primarily composed of an inert gas (CO<sub>2</sub>), facilitated by a subcooled liquid spray. A comprehensive analysis is presented, employing a numerical model to simulate a cyclone separator under various SEC outlet conditions. Methodologically, the simulation, conducted in Fluent, encompasses three-dimensional, transient, and turbulent characteristics using the Reynolds stress model turbulent model and mixture model to replicate the turbulent two-phase flow within a gas–liquid separator. Structural considerations are delved into, evaluating the efficacy of single- and dual-inlet separators to enhance CO<sub>2</sub> purification efficiency. The study reveals significant insights into the optimization process, highlighting a notable enhancement in separation efficiency within the dual-inlet cyclone, compared to its single inlet counterpart. Specifically, a 90.7 % separation efficiency is observed in the former, characterized by symmetrical flow patterns devoid of wavering CO<sub>2</sub> cores, whereas the latter exhibits less desirable velocity vectors. Furthermore, the investigation explores the influence of key parameters, such as liquid volume fraction (LVF) and water droplet diameter, on separation efficiency. It is ascertained that a 10 % LVF with a water droplet diameter of 10 µm yields the highest separation efficiency at 90.7 %, whereas a 20 % LVF with a water droplet diameter of 1 µm results in a reduced efficiency of 50.79 %. Moreover, the impact of structural modifications, such as the addition of vanes, on separation efficiency and pressure drop is explored. Remarkably, the incorporation of vanes leads to a 9.2 % improvement in separation efficiency and a 16.8 % reduction in pressure drop at a 10 % LVF. The findings underscore the significance of structural considerations and parameter optimization in advancing CO<sub>2</sub> capture technologies, with implications for sustainable energy production and environmental conservation.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"47 9","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141650075","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}
In this work, cellulose was effectively produced from corn husks by a simple and eco-friendly method. Major influencing variables for cellulose extraction were examined, and the highest yield of lignin and hemicellulose cleavage was achieved after corn husks were treated in 12.5 wt % NaOH solution at solid/liquid ratio (S/L) of 1:10 g mL−1, 70 °C for 90 min. Subsequent bleaching conducted in 10 wt % H2O2 solution at 80 °C for 90 min produced cellulose with a lightness value (L*) of ∼87, chromaticity indexes a* = −1.85, b* = 2.94 with high purity, 90.86 %, and crystallinity, 64.94 %. Fourier transform infrared, scanning electron microscopy, and x-ray diffraction analysis showed a clear transition in morphology, structure modification, and crystallinity consistent with the alteration of the chemical composition from raw material to delignified residue and the bleached one. To synthesize microcrystalline cellulose (MCC), the hydrolysis was investigated in H2SO4 solutions of different concentrations and durations via monitoring particle size distribution by laser diffraction spectroscopy. At the most efficient conditions (30 wt % H2SO4, 18 h, 45 °C, 1:10 S/L ratio), the obtained MCC reached an average particle size of 42.68 µm, crystallinity degree of 61.6 %, and cellulose purity of 92.5 %. Meanwhile, similar parameters with 4 N HCl solution produced MCC with the same purity but higher crystallinity (65.6 %), higher mean size, 67.62 µm, and higher aspect ratio. SEM images showed that 4 N HCl caused less detrimental and erosive action, and less fragmentation on cellulose microfibrils compared to 30 wt % H2SO4. The study's outcome supports the feasibility of corn husks to produce cellulose and MCC for further applications.
{"title":"Closer Approach towards the Preparation of Cellulose and Microcrystalline Cellulose from Corn Husks","authors":"Phan Thi Hoang Anh, Doan Minh Tai","doi":"10.1002/ceat.202300379","DOIUrl":"10.1002/ceat.202300379","url":null,"abstract":"<p>In this work, cellulose was effectively produced from corn husks by a simple and eco-friendly method. Major influencing variables for cellulose extraction were examined, and the highest yield of lignin and hemicellulose cleavage was achieved after corn husks were treated in 12.5 wt % NaOH solution at solid/liquid ratio (S/L) of 1:10 g mL<sup>−1</sup>, 70 °C for 90 min. Subsequent bleaching conducted in 10 wt % H<sub>2</sub>O<sub>2</sub> solution at 80 °C for 90 min produced cellulose with a lightness value (<i>L</i><sup>*</sup>) of ∼87, chromaticity indexes <i>a</i><sup>*</sup> = −1.85, <i>b</i><sup>*</sup> = 2.94 with high purity, 90.86 %, and crystallinity, 64.94 %. Fourier transform infrared, scanning electron microscopy, and x-ray diffraction analysis showed a clear transition in morphology, structure modification, and crystallinity consistent with the alteration of the chemical composition from raw material to delignified residue and the bleached one. To synthesize microcrystalline cellulose (MCC), the hydrolysis was investigated in H<sub>2</sub>SO<sub>4</sub> solutions of different concentrations and durations via monitoring particle size distribution by laser diffraction spectroscopy. At the most efficient conditions (30 wt % H<sub>2</sub>SO<sub>4</sub>, 18 h, 45 °C, 1:10 S/L ratio), the obtained MCC reached an average particle size of 42.68 µm, crystallinity degree of 61.6 %, and cellulose purity of 92.5 %. Meanwhile, similar parameters with 4 N HCl solution produced MCC with the same purity but higher crystallinity (65.6 %), higher mean size, 67.62 µm, and higher aspect ratio. SEM images showed that 4 N HCl caused less detrimental and erosive action, and less fragmentation on cellulose microfibrils compared to 30 wt % H<sub>2</sub>SO<sub>4</sub>. The study's outcome supports the feasibility of corn husks to produce cellulose and MCC for further applications.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"47 9","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586683","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}
Dr. Min Li, Jiarui Peng, Xiuyu Zhu, Prof. Zhishan Zhang, Dr. Yixin Ma, Prof. Jun Gao
A thermally coupled distillation technology can bring energy-saving benefits, but it poses challenges to process control. This article explores dynamic control of different side-stream quaternary extractive distillation configurations. One the one hand, the open-loop controllability of these processes is analyzed in terms of various criteria by the control design interface technology of Aspen Plus Dynamics. On the other hand, their control structures are established and examined by introducing large feed flow and composition perturbations. The results show that the triple-side-stream distillation still performs the best state and input–output controllability in spite of the strongest nonlinearity, and is also well resistant to large feed perturbations using a simple control structure.
热耦合精馏技术可以带来节能效益,但也给工艺控制带来了挑战。本文探讨了不同侧流四级萃取精馏配置的动态控制。一方面,通过 Aspen Plus Dynamics 的控制设计界面技术,根据各种标准分析了这些过程的开环可控性。另一方面,通过引入大的进料流量和成分扰动,建立并检验了它们的控制结构。结果表明,尽管非线性最强,三侧流蒸馏仍然具有最佳的状态和输入输出可控性,而且使用简单的控制结构也能很好地抵抗大的进料扰动。
{"title":"Dynamic Control Analysis of Various Side-Stream Quaternary Extractive Distillation Configurations","authors":"Dr. Min Li, Jiarui Peng, Xiuyu Zhu, Prof. Zhishan Zhang, Dr. Yixin Ma, Prof. Jun Gao","doi":"10.1002/ceat.202200517","DOIUrl":"10.1002/ceat.202200517","url":null,"abstract":"<p>A thermally coupled distillation technology can bring energy-saving benefits, but it poses challenges to process control. This article explores dynamic control of different side-stream quaternary extractive distillation configurations. One the one hand, the open-loop controllability of these processes is analyzed in terms of various criteria by the control design interface technology of Aspen Plus Dynamics. On the other hand, their control structures are established and examined by introducing large feed flow and composition perturbations. The results show that the triple-side-stream distillation still performs the best state and input–output controllability in spite of the strongest nonlinearity, and is also well resistant to large feed perturbations using a simple control structure.</p>","PeriodicalId":10083,"journal":{"name":"Chemical Engineering & Technology","volume":"47 9","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141574039","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}