Chemical Engineering and Processing - Process Intensification最新文献_第2页

Mass-transfer study in a swirling flow electrochemical reactor with structured counter electrodes under single-phase and two-phase (gas-evolving) flows

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-20 DOI: 10.1016/j.cep.2025.110286

O. González Pérez, M.J. Vilchez, T. Burgos, J.M. Bisang

{"title":"Mass-transfer study in a swirling flow electrochemical reactor with structured counter electrodes under single-phase and two-phase (gas-evolving) flows","authors":"O. González Pérez, M.J. Vilchez, T. Burgos, J.M. Bisang","doi":"10.1016/j.cep.2025.110286","DOIUrl":"10.1016/j.cep.2025.110286","url":null,"abstract":"<div><div>This paper analyses the effect of two kinds of structures as counter electrodes on the mass-transfer performance of an electrochemical reactor under swirling flow. The arrangements used as counter electrodes were either helical-shaped structures or an expanded metal sheet. The former presents a more uniform mass-transfer distribution as the main advantage compared to a decaying swirling flow system. The best uniformity was achieved when the number of turns in the helix was higher than 9 for a 257.5 mm reactor length. The latter structured counter electrode can only be vindicated by its high value of specific surface area, increasing the space-time yield of the reactor, but with a poor performance in the mass-transfer behaviour regarding the decaying swirling flow. The effect of the volumetric flow rate on the mass-transfer distribution is scarce for both structured counter electrodes. The operation with a two-phase system showed a slightly more ineffective behaviour in comparison to the single-phase case. The use of a helical structure as a counter electrode can be recognised as an improvement in the reactor performance under swirling flow from the standpoint of the mass-transfer distribution.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110286"},"PeriodicalIF":3.8,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Numerical simulation of the mixing performance of a novel SAR micromixer with hollow mixing chamber and diverse connecting channel

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-17 DOI: 10.1016/j.cep.2025.110282

Danlong Li , Xiaojing Hou , Yuchen He , Ke-Jun Wu

{"title":"Numerical simulation of the mixing performance of a novel SAR micromixer with hollow mixing chamber and diverse connecting channel","authors":"Danlong Li , Xiaojing Hou , Yuchen He , Ke-Jun Wu","doi":"10.1016/j.cep.2025.110282","DOIUrl":"10.1016/j.cep.2025.110282","url":null,"abstract":"<div><div>A three-dimensional splitting and recombining micromixer featuring hollow mixing chambers and diverse connecting channel geometries was proposed to enhance mixing efficiency. The performance of three distinct micromixer variants was assessed by analyzing the mixing index, pressure drop, and mixing energy cost across Reynolds numbers (<em>Re</em>) ranging from 0.01 to 20. Results indicate that the micromixer with hook-shaped connecting channels (HACM-H) demonstrates superior mixing efficiency, achieving a mixing index exceeding 0.9 over short distances (5 mm) and greater than 0.99 when <em>Re</em> > 15. Investigation of the inner arc radius of the hook-shaped channel revealed its significant impact on pressure drop compared to the mixing index. Furthermore, the performance of the scaled-up HACM-H micromixer was evaluated, showing that the mixing index remains nearly constant at a given <em>Re</em>, while the square of the amplification factor was inversely proportional to pressure drop and directly proportional to mixing time.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110282"},"PeriodicalIF":3.8,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Process optimization of microwave-assisted extraction (MAE) of polycyclic aromatic hydrocarbons (PAHs) from leaves of Murraya paniculata (L.) Jack: Process intensification approach

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-17 DOI: 10.1016/j.cep.2025.110284

Shritama Mukhopadhyay, Ratna Dutta, Papita Das

{"title":"Process optimization of microwave-assisted extraction (MAE) of polycyclic aromatic hydrocarbons (PAHs) from leaves of Murraya paniculata (L.) Jack: Process intensification approach","authors":"Shritama Mukhopadhyay, Ratna Dutta, Papita Das","doi":"10.1016/j.cep.2025.110284","DOIUrl":"10.1016/j.cep.2025.110284","url":null,"abstract":"<div><div>Pervasiveness of polycyclic aromatic hydrocarbons (PAHs) in environment results in threatening health implications and ecological catastrophes. The study was aimed at developing a process intensified extraction route for isolation of PAHs from leaves of an established plant biomonitor, <em>Murraya paniculata</em> (L.) Jack. Microwave-assisted extraction (MAE) was targeted and its parameters were optimized through response surface methodology (RSM) incorporating Box-Behnken Design (BBD) in maximizing extraction yield of PAHs. Instrumental analysis of PAHs was validated based on desirable data of precision (RSD<1–2 %), accuracy (78–99 % recovery), LOD (0.001–0.003 µg g<sup>-1</sup>) and LOQ (0.03–0.09 µg g<sup>-1</sup>). Solvent selection through screening experiments followed by single factor analysis for solvent-to-sample ratio (V/W), extraction time and extraction temperature was carried out. In RSM, experimental and predicted response values showed a good fit for quadratic model and significance of the regression model was confirmed through analysis of variance (ANOVA) (F: 428.74; <em>p</em> < 0.0001). Extraction yield was maximized for extraction temperature: 45.77 °C, extraction time: 11.67 min and solvent-to-sample ratio: 22.64 mL g<sup>-1</sup> with 98 % model accuracy. A comparison between Soxhlet and MAE highlighted the consumption of 1.8 fold higher volume of solvent, requiring 30 times more extraction time with high energy input in Soxhlet method, suggesting the intensified performance of MAE.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110284"},"PeriodicalIF":3.8,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Comprehensive analysis of multiple factors influencing droplet coalescence by orthogonal simulation: A molecular dynamics study

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-17 DOI: 10.1016/j.cep.2025.110280

Ruipeng Zhang , Zhiqian Sun , Yuling Fan , Yanming Xie , Chaozhi Ma

{"title":"Comprehensive analysis of multiple factors influencing droplet coalescence by orthogonal simulation: A molecular dynamics study","authors":"Ruipeng Zhang , Zhiqian Sun , Yuling Fan , Yanming Xie , Chaozhi Ma","doi":"10.1016/j.cep.2025.110280","DOIUrl":"10.1016/j.cep.2025.110280","url":null,"abstract":"<div><div>In recent years, electrostatic coalescing technology has been widely used in the electric dehydration of crude oil due to its many advantages. However, with the widespread use of chemical flooding technology in oil fields, the disadvantages are becoming more and more obvious. Many scholars try to improve the coalescing efficiency through numerical simulation, but most of the existing studies focus on the macro level and the impact on the micro scale is not detailed enough. In this study, the GROMACS simulation software was used to simulate molecular dynamics. By establishing a simulation system, the approaching time and fusion time of droplet coalescence, as well as the interaction potential energy between droplet were investigated. Then L16 (4<sup>5</sup>) orthogonal test table was used for orthogonal simulation, and the microscopic mechanism of droplet coalescence and the priority order of each factor affecting droplet coalescence efficiency could be obtained. The results of this study will help to further improve the mechanism of electrostatic coalescence from the molecular level, and the numerical simulation method used in this study has a good reference value for the study of micro and nano droplet characteristics.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110280"},"PeriodicalIF":3.8,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Facile preparation and characterization of α-aluminum oxide particles by ultrasonic spray pyrolysis

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-15 DOI: 10.1016/j.cep.2025.110278

Van Doan Nguyen, Hoa Phan, The Vinh La

{"title":"Facile preparation and characterization of α-aluminum oxide particles by ultrasonic spray pyrolysis","authors":"Van Doan Nguyen, Hoa Phan, The Vinh La","doi":"10.1016/j.cep.2025.110278","DOIUrl":"10.1016/j.cep.2025.110278","url":null,"abstract":"<div><div>The microscopic morphology and purity of alumina are crucial factors in determination of its practical applications in high-tech industries such as ceramics, bioceramics, catalyst carriers, and others. In the present paper, α-Al<sub>2</sub>O<sub>3</sub> particles were produced by ultrasonic spray pyrolysis employing the Al(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O and AlCl<sub>3</sub>·6H<sub>2</sub>O precursors. The results of microscopic examinations, mapping investigation, and X-ray diffraction (XRD) patterns revealed that alumina formed separated hollow spherical particles with an averaging 0.8 -1.0 µm in size. The sizes of the experimentally acquired alumina particles were contrasted with the theoretically calculated values. The optimal parameters for alumina production such as the precursor concentration and the phase transition temperature were determined to be 1.0 M and 1223 K, respectively. Fourier transform infrared spectroscopy (FT-IR) confirmed that the γ- phase was converted to the α-Al<sub>2</sub>O<sub>3</sub> phase. In addition, energy dispersive X-ray (EDX) and X-ray fluorescence (XRF) measurements were utilized to determine the chemical composition of the alumina powder samples, which revealed that the produced α-Al<sub>2</sub>O<sub>3</sub> had purities of 99.9 and 99.8 %, respectively, at a sintering temperature of 1473 K. These results provide significant insights for industrial applications in the aforementioned sectors.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110278"},"PeriodicalIF":3.8,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Application of the approximate mapping method and validation of the mixing evaluation method based on fractal dimension in an oscillatory baffled reactor

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-15 DOI: 10.1016/j.cep.2025.110279

Ryosuke Murotani , Takafumi Horie , Satoko Fujioka , Erika Okita , Masahiro Yasuda

{"title":"Application of the approximate mapping method and validation of the mixing evaluation method based on fractal dimension in an oscillatory baffled reactor","authors":"Ryosuke Murotani , Takafumi Horie , Satoko Fujioka , Erika Okita , Masahiro Yasuda","doi":"10.1016/j.cep.2025.110279","DOIUrl":"10.1016/j.cep.2025.110279","url":null,"abstract":"<div><div>An approximate mapping method was applied and validated to predict the mixing state of an oscillatory baffled reactor in the low oscillatory Reynolds number regime. In addition, a fractal dimension method using mapping images for mixing performance evaluation was validated. The Poincaré maps approximated by Shepard's method were employed for the predictions. The results were well-matched when comparing fluid deformation and the mixing performance with the mapping method and direct numerical calculations based on virtual particle tracing, with the relative error being small at less than 1.5%. Using the mapping method, the computational time required for CFD was reduced, and the total time for the entire process up to the evaluation of mixing performance was reduced to two-thirds. Moreover, the results of the mixing performance evaluation using the fractal dimension were consistent with those obtained from a standard method. It was shown that the mixing performance evaluation through simple image analysis, based on the mixing enhancement mechanisms of laminar flow, is feasible.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110279"},"PeriodicalIF":3.8,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Nanotechnology meets flotation: Unveiling the potential of liquid biphasic systems

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-14 DOI: 10.1016/j.cep.2025.110277

Wei Han Foo , Shir Reen Chia , Perumal Varalakshmi , Vinod Kumar , Kit Wayne Chew

{"title":"Nanotechnology meets flotation: Unveiling the potential of liquid biphasic systems","authors":"Wei Han Foo , Shir Reen Chia , Perumal Varalakshmi , Vinod Kumar , Kit Wayne Chew","doi":"10.1016/j.cep.2025.110277","DOIUrl":"10.1016/j.cep.2025.110277","url":null,"abstract":"<div><div>Nanobubble (NB) technology has emerged as a revolutionary innovation, transforming applications ranging from wastewater treatment to drug delivery. It addresses inefficiencies in conventional methods by enhancing reaction rates, delivery mechanisms, and environmental sustainability. While liquid biphasic flotation (LBF) has been widely explored for biomolecules extraction, its efficiency is often limited by the use of conventional microbubbles or macrobubbles. This review provides a comprehensive analysis of the fundamentals of LBF, the physicochemical characteristics and generation of NBs, and their synergistic potential in enhancing flotation-based applications. We further discuss the optimal NB generation techniques most suited for biphasic flotation, highlighting membrane-based methods—where gas is introduced through a sintered disc or nanoporous membrane—as the most compatible process with LBF. This ensures a continuous flotation effect while simultaneously generating stable NBs. By merging the strengths of NBs and LBF, this fusion offers promising advancements in sustainable separation technologies. However, future research will need to focus on developing an optimized NBLBF system, addressing challenges in scalable and stable NB generation for enhancing biomolecules extraction.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110277"},"PeriodicalIF":3.8,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Structural optimization of mining decanter centrifuge based on response surface method and multi-objective genetic algorithm

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-12 DOI: 10.1016/j.cep.2025.110276

Peichao Cong, Dong Zhou, Wenbin Li, Murong Deng

{"title":"Structural optimization of mining decanter centrifuge based on response surface method and multi-objective genetic algorithm","authors":"Peichao Cong, Dong Zhou, Wenbin Li, Murong Deng","doi":"10.1016/j.cep.2025.110276","DOIUrl":"10.1016/j.cep.2025.110276","url":null,"abstract":"<div><div>A significant quantity of slime water generated during coal mining poses a serious threat to the health of underground workers and the environment. The decanter centrifuge is widely employed in slime water treatment due to its high efficiency in solid-liquid separation. This paper proposes a structural optimization framework for the mine decanter centrifuge based on the Response Surface Method (RSM) and Multi-Objective Genetic Algorithm (MOGA). Firstly, a three-dimensional numerical model of the decanter centrifuge was established, and the reliability of the model was verified by experimental and theoretical analysis. Subsequently, the Box-Behnken design method and RSM were employed to construct a response surface model that links input parameters (drum half cone angle, screw pitch, and spiral blade Inclination angle) with target variables (solid phase recovery rate and overflow liquid phase solids content). The interactions between each input parameter and target variable were assessed using analysis of variance (ANOVA), which confirmed the model's effectiveness and generalization capability. Finally, MOGA was employed to optimize the centrifuge's structural parameters, resulting in an 8.16 % increase in solid recovery rate and a 35.84 % reduction in overflow liquid solid content. It offers a valuable reference for the structural optimization of decanter centrifuges in coal slurry separation.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110276"},"PeriodicalIF":3.8,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Scaling process intensification technologies: what does it take to deploy? 推广加工强化技术：部署需要什么？

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-11 DOI: 10.1016/j.cep.2025.110275

Daria C. Boffito

引用次数: 0

Improved design and performance study of a novel fixed tube-sheet heat exchanger utilizing a fluid drainage column

IF 3.8 3区工程技术

Chemical Engineering and Processing - Process Intensification Pub Date : 2025-03-10 DOI: 10.1016/j.cep.2025.110274

Qichao Wang , Zhihui Zhao , Jie Pan , Xiang Li , Haifeng Chen , Huanying Liu , Bingyuan Hong

{"title":"Improved design and performance study of a novel fixed tube-sheet heat exchanger utilizing a fluid drainage column","authors":"Qichao Wang , Zhihui Zhao , Jie Pan , Xiang Li , Haifeng Chen , Huanying Liu , Bingyuan Hong","doi":"10.1016/j.cep.2025.110274","DOIUrl":"10.1016/j.cep.2025.110274","url":null,"abstract":"<div><div>The carbon emissions in the oil and gas industry are generally high, against the backdrop of low oil and gas recovery rates in oil depots during the summer. This paper proposes a novel fixed tube-sheet heat exchanger with hot fluid drainage column added at the left end cover. The aim is to enhance the heat transfer performance of the heat exchanger (HE), thereby improving the recovery rate. Computational fluid dynamics (CFD) methods are employed to study the performance of the novel fixed tube-sheet heat exchanger (NFTHE). Additionally, the NFTHE is compared with the conventional fixed tube-sheet heat exchanger (FTHE) under various industrial conditions. The results indicate that under the same industrial conditions, the heat transfer rate of the NFTHE increases by 2.46 % to 5.71 %, the overall heat transfer coefficient increases by 22.7 % to 32.6 %, the shell-side heat transfer coefficient increases by 10.6 % to 25.2 %, the effectiveness shows an improvement ranging from 1.72 % to 7.92 %, and the number of transfer units increases by 16.5 % to 44.8 % compared to the FTHE. Comprehensive performance validation parameters show that the NFTHE exhibits superior performance across all metrics, providing a new approach for the design of fixed tube-sheet heat exchangers by adding structures at the end cover.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"212 ","pages":"Article 110274"},"PeriodicalIF":3.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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