Chemical Engineering Research & Design最新文献

Experimental quantification of interparticle forces in gas-solid fluidized beds operating at temperatures from ambient to 1500 °C 气固流化床中颗粒间作用力的实验量化（工作温度范围：常温至 1500 °C

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-13 DOI: 10.1016/j.cherd.2024.10.011

{"title":"Experimental quantification of interparticle forces in gas-solid fluidized beds operating at temperatures from ambient to 1500 °C","authors":"","doi":"10.1016/j.cherd.2024.10.011","DOIUrl":"10.1016/j.cherd.2024.10.011","url":null,"abstract":"<div><div>The successful design and operation of high-temperature gas-solid fluidized bed reactors require a deep understanding of interparticle forces (IPFs). However, experimentally quantifying IPFs at elevated temperatures has been a significant challenge due to the lack of suitable methods. This study addresses this gap by introducing a simple yet reliable experimental approach to quantify IPFs in a gas-solid fluidized bed across a temperature range from ambient to 1500 °C. The experimental results reveal that IPFs increase gradually with temperatures up to 1200 °C and become more pronounced at higher temperatures. Smaller particles, or those prone to changes in morphological, structural, and chemical properties—such as softening, sintering, or the formation of low-melting-point eutectic compounds at high temperatures—intensify IPFs significantly. This phenomenon is corroborated by our experiments and comparison with literature data across various temperatures and particle types. Finally, two empirical correlations are proposed to predict IPFs as temperature and particle diameter functions for coarse particles in high-temperature fluidized beds. These findings enhance the understanding of IPFs in high-temperature fluidized beds and are valuable for developing such systems for industrial applications.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442674","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

Design and optimization of reaction-separation-recycle systems using a pseudo-transient continuation model 利用伪瞬态延续模型设计和优化反应分离-循环系统

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-11 DOI: 10.1016/j.cherd.2024.10.013

{"title":"Design and optimization of reaction-separation-recycle systems using a pseudo-transient continuation model","authors":"","doi":"10.1016/j.cherd.2024.10.013","DOIUrl":"10.1016/j.cherd.2024.10.013","url":null,"abstract":"<div><div>The reaction-separation-recycle (RSR) systems are an important part of chemical processes. Due to the interaction between reaction and separation sections, the behavior of RSR processes becomes highly complex and non-linear, posing different challenges for their design and optimization. The purpose of this study is to design and optimize RSR processes for irreversible liquid phase reaction systems using the pseudo-transient continuation (PTC) approach within an equation-oriented programing environment. This approach was applied to investigate one binary system and four ternary systems. The differential-algebraic models of the proposed process flowsheets were solved until the steady-state conditions were reached. The tray bypass efficiency method was incorporated into the PTC to circumvent the need for discrete optimization. The results demonstrated that in those cases where the product was heavier than the reactants, employing a stripping column was more economical than using a conventional distillation column for both the binary and ternary systems. In the ternary systems with two recycle streams, when the product was the intermediate component in terms of boiling point, the utilization of a divided-wall distillation column (DWC) resulted in a total annual cost saving of 35 % and 41 % compared to direct and indirect separation methods, respectively.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442675","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

Topology optimization and numerical validation for heat transfer improvement in a packed-bed reactor with monolithic catalyst 拓扑优化和数值验证，改善带整体催化剂的填料床反应器的传热性能

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-11 DOI: 10.1016/j.cherd.2024.10.012

引用次数: 0

Oxidative desulfurization of liquid fuels using deep eutectic solvents as a catalyst and extractant: A review 使用深共晶溶剂作为催化剂和萃取剂对液体燃料进行氧化脱硫：综述

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-10 DOI: 10.1016/j.cherd.2024.10.006

{"title":"Oxidative desulfurization of liquid fuels using deep eutectic solvents as a catalyst and extractant: A review","authors":"","doi":"10.1016/j.cherd.2024.10.006","DOIUrl":"10.1016/j.cherd.2024.10.006","url":null,"abstract":"<div><div>For environmental safety and sustainability, sulfur concentration in fuel must be minimized. A Commercial desulfurization method, hydrodesulfurization (HDS), offers fine desulfurization of liquid fuels; however, the major challenge of making the process energy efficient remains intact. To address this, various desulfurization approaches are being explored, such as biodesulfurization, adsorption desulfurization, extraction desulfurization, and oxidative desulfurization. Industrial engineers are finding novel reaction routes, while chemical engineers and chemists are working on preparing catalysts and their modifications to optimize process conditions. Research in oxidative desulfurization (ODS) demonstrates that both photocatalytic and thermal-driven ODS processes exhibit significant potential. Thermally driven extraction and catalytic oxidative desulfurization (ECODS) have gained attention using deep eutectic solvents (DESs) and ionic liquids (ILs) as both catalysts and extractants. However, DES overcomes certain limitations of ILs. In the case of DES, the oxidants (H<sub>2</sub>O<sub>2</sub>/O<sub>2</sub>) oxidize the organic acids in DES to peroxy acid, which in turn oxidizes sulfur compounds of fuel into easily removable sulfones, removed by the same DES (acting as extractant as well). DESs are environmentally benign, possess the capability to work synergistically with additional catalysts such as polyoxometalates (POMs) and metal-free catalysts, can be regenerated using only deionized water, and can be reused multiple times with minimal loss of efficiency. This literature review explores the synergistic, catalytic and extractive potential of DES to overcome the major challenge of energy intensive nature of desulfurization process. Furthermore, various methods are critically analyzed, comparative potential of ionic liquids and DESs in ECODS is discussed, and importance of real system (fuel) studies is emphasized.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442679","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

Distributed optical fiber sensors for real-time tracking of fouling buildup for tubular continuous polymerization reactors 用于实时跟踪管式连续聚合反应器结垢情况的分布式光纤传感器

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-09 DOI: 10.1016/j.cherd.2024.10.007

{"title":"Distributed optical fiber sensors for real-time tracking of fouling buildup for tubular continuous polymerization reactors","authors":"","doi":"10.1016/j.cherd.2024.10.007","DOIUrl":"10.1016/j.cherd.2024.10.007","url":null,"abstract":"<div><div>Early online fouling detection is expected to be a real step forward in the operation of continuous tubular reactors. As an online technology, the Rayleigh backscatter based <strong>D</strong>istributed <strong>O</strong>ptical <strong>F</strong>iber <strong>S</strong>ensor (DOFS) technology was evaluated with respect to temperature measurement resolution, reproducibility and the best online calibration method. Different coatings and terminations were characterized for emulsion polymerization reactors. Commercially available sensors with acrylate primary coatings, dual acrylate coatings, and polyimide coatings were all compared with each other. It is shown that the presence of a secondary coating significantly alters sensor behaviour. Sensors with only a primary coating showed a temperature resolution of 0.1 °C. Online calibration for temperature readout was carried out and validation tested on segments of fiber integrated in a 3D-printed reactor channel (diameter 1.5 mm). Acrylate coated sensors showed a deviation of 20 % for the calibration coefficients when inside the reactor channel compared to the online calibration, leading to errors in temperature measurement. Polyimide coated sensors showed a deviation of just 0.6 % in this validation test, demonstrating good capabilities for online calibration with accurate temperature measurements. The possibility of spatial and temporal monitoring of fouling buildup through a heat exchanging wall equipped with DOFS was evaluated.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142428778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Design, experimental optimization, and flow analysis of a novel bioreactor for dynamic mammalian cell culture at laboratory scale using Box-Behnken design 利用方框-贝肯（Box-Behnken）设计，设计、优化和分析用于实验室规模哺乳动物细胞动态培养的新型生物反应器

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-09 DOI: 10.1016/j.cherd.2024.10.008

{"title":"Design, experimental optimization, and flow analysis of a novel bioreactor for dynamic mammalian cell culture at laboratory scale using Box-Behnken design","authors":"","doi":"10.1016/j.cherd.2024.10.008","DOIUrl":"10.1016/j.cherd.2024.10.008","url":null,"abstract":"<div><div>Improving the quality of dynamic cell culture in laboratories is an important field in bioengineering. In this study, a novel lab-scale bioreactor using a vibrating agitator and a modified flask has been introduced to create a strong mixing at low shear stress. This bioreactor has been optimized using Box-Behnken design based on three dimensionless important structural factors including disc diameter, vibration amplitude, and the height of the disc placement. Three growth indicators including the specific growth rate, the natural logarithm of the maximum cell density, and productivity have been considered as biological responses. The results show that the disc diameter has the most important role in these indicators. If the disc diameter, vibration amplitude, and the height of disc placement are set to 0.24, 0.02, and 0.4 of the flask diameter, respectively, the values of the specific growth rate, the maximum cell density, and productivity at this optimum settings are 0.033 (h<sup>−1</sup>), 13.11, and 5133 (cells/(mL.h)), respectively. These values of the indicators are high and indicate the better performance of this bioreactor than other lab-scale bioreactors. In addition, investigating Reynolds number in the fluid flow indicates that in the range of 780 up to 1150, growth indices are high.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432775","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

Effect of calcite on the thermal decomposition of pyrite: Thermodynamics, phase transformation, microstructure evolution and kinetics 方解石对黄铁矿热分解的影响：热力学、相变、微结构演变和动力学

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-09 DOI: 10.1016/j.cherd.2024.10.009

{"title":"Effect of calcite on the thermal decomposition of pyrite: Thermodynamics, phase transformation, microstructure evolution and kinetics","authors":"","doi":"10.1016/j.cherd.2024.10.009","DOIUrl":"10.1016/j.cherd.2024.10.009","url":null,"abstract":"<div><div>Pyrite, a common iron mineral in refractory iron ores, emits SO<sub>2</sub> during oxidative roasting, contributing to environmental pollution. This study investigated the effect of calcite on the thermal decomposition of pyrite, focusing on thermodynamics, phase transformation, microstructural evolution, and non-isothermal kinetics, with emphasis on SO<sub>2</sub> formation inhibition. Results showed that pyrite decomposed first to pyrrhotite, then to magnetite and hematite, with SO<sub>2</sub> as the primary gaseous product. Higher temperatures and lower oxygen concentrations favored S<sub>2</sub> gas formation. Non-isothermal decomposition of pyrite occurred between 400–725°C, initiated at the particle surface, and significantly increased product porosity, resulting in butterfly-shaped hematite. The addition of calcite resulted in the reaction of SO<sub>2</sub> with calcite to form anhydrite on the particle surface, inhibiting the release of SO<sub>2</sub>. Initially, the thermal decomposition of pyrite proceeded with a low apparent activation energy, making the reaction relatively easy. However, the presence of calcite significantly increased the apparent activation energy and inhibited the thermal decomposition reaction.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432776","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

ReLU surrogates in mixed-integer MPC for irrigation scheduling 灌溉调度混合整数 MPC 中的 ReLU 代理

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-09 DOI: 10.1016/j.cherd.2024.10.005

{"title":"ReLU surrogates in mixed-integer MPC for irrigation scheduling","authors":"","doi":"10.1016/j.cherd.2024.10.005","DOIUrl":"10.1016/j.cherd.2024.10.005","url":null,"abstract":"<div><div>Efficient water management in agriculture is important for mitigating the growing freshwater scarcity crisis. Mixed-integer Model Predictive Control (MPC) has emerged as an effective approach for addressing the complex scheduling problem in agricultural irrigation. However, the computational complexity of mixed-integer MPC still poses a significant challenge, particularly in large-scale applications. This study proposes an approach to enhance the computational efficiency of mixed-integer MPC-based irrigation schedulers by employing Rectified Linear Unit (ReLU) surrogate models to describe the soil moisture dynamics of the agricultural field. By leveraging the mixed-integer linear representation of the ReLU operator, the proposed approach transforms the mixed-integer MPC-based scheduler with a quadratic cost function into a mixed-integer quadratic program, which is the simplest class of mixed-integer nonlinear programming problems that can be efficiently solved using global optimization solvers. The effectiveness of this approach is demonstrated through comparative studies conducted on a large-scale agricultural field across two growing seasons, involving other machine learning surrogate models, specifically Long Short-Term Memory (LSTM) networks, and the triggered irrigation scheduling method. The ReLU-based approach significantly reduces solution times — by up to 99.5% — while achieving comparable performance to the LSTM approach in terms of water savings and Irrigation Water Use Efficiency (IWUE). Moreover, the ReLU-based approach achieves enhanced performance in terms of irrigation water savings and IWUE compared to the triggered approach.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A deep-learning-based surrogate modeling method with application to plasma processing 基于深度学习的代用建模方法在等离子体处理中的应用

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-09 DOI: 10.1016/j.cherd.2024.09.031

{"title":"A deep-learning-based surrogate modeling method with application to plasma processing","authors":"","doi":"10.1016/j.cherd.2024.09.031","DOIUrl":"10.1016/j.cherd.2024.09.031","url":null,"abstract":"<div><div>Rapid and accurate system evolution predictions are crucial in scientific and engineering research. However, the complexity of processing systems, involving multiple physical field couplings and slow convergence of iterative numerical algorithms, leads to low computational efficiency. Hence, this paper introduces a systematic deep-learning-based surrogate modeling methodology for multi-physics-coupled process systems with limited data and long-range time evolution, accurately predicting physics dynamics and considerably improving computational efficiency and generalization. The methodology comprises three main components: (1) generating datasets using a sequential sampling strategy, (2) modeling multi-physics spatio-temporal dynamics by designing a heterogeneous Convolutional Autoencoder and Recurrent Neural Network, and (3) training high-precision models with limited data and long-range time evolution via a dual-phase training strategy. A holistic evaluation using a 2D low-temperature plasma processing example demonstrates the methodology’s superior computational efficiency, accuracy, and generalization capabilities. It predicts plasma dynamics approximately <span><math><mrow><mn>1</mn><msup><mrow><mn>0</mn></mrow><mrow><mn>5</mn></mrow></msup></mrow></math></span> times faster than traditional numerical solvers, with a consistent 2% relative error across different generalization tasks. Furthermore, the potential for transferability across various geometries is explored, and the model’s transfer capability is demonstrated with two distinct geometric domain examples.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142442677","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

Enabling data-driven process dynamic modeling for extractive leaching and chemical precipitation 为萃取浸出和化学沉淀建立数据驱动的工艺动态模型

IF 3.7 3区工程技术

Chemical Engineering Research & Design Pub Date : 2024-10-09 DOI: 10.1016/j.cherd.2024.10.004

引用次数: 0