Chemical Engineering Research & Design最新文献

{"title":"Experimental study of the effect of droplet motion velocity on the capture capacity of dust with different characteristics","authors":"Zhang Tian ,&nbsp;Chen Xingyu ,&nbsp;Ge Shaocheng ,&nbsp;Li Sheng ,&nbsp;Tong Linquan ,&nbsp;Mu Xinsheng ,&nbsp;Guo Yuhao","doi":"10.1016/j.cherd.2025.03.012","DOIUrl":"10.1016/j.cherd.2025.03.012","url":null,"abstract":"<div><div>In coal mine dust control, the efficiency of pneumatic spray technology is limited due to the unclear removal efficiency of different types of droplets on different types of dust, and the unclear dust fog coupling mechanism. This research systematically explores the characteristics of the droplets of the internally mixed pneumatic atomization nozzle and its interaction with the dust through theoretical analysis and experiment. Laser particle size analyzer and particle image velocimeter were used to measure the particle size and velocity field distribution of fog droplets. A gas dust liquid three-phase coupling experimental platform was constructed to capture fog films with specific properties of fog droplet groups for dust fog coupling experiments. The response surface methodology was used to analyze the dust fog coupling effect under different operating conditions. The experimental results show that there is a significant temporal and spatial difference between the droplet velocity and the airflow velocity. The velocity of the aerosol flow field is negatively correlated with the spray distance, and positively correlated with the aerodynamic pressure. The attenuation of the airflow velocity is far greater than that of the droplet. Droplet size is negatively correlated with aerodynamic pressure, and positively correlated with water flow and spray distance. In the coupling effect of dust and mist, dust particles with particle sizes of 0–2.5 μm and 5–10 μm are dominated by droplet velocity, while dust particles with particle sizes of 2.5–5 μm are significantly affected by their own velocity. When the droplet velocity reaches 18–23 m/s, the fog film has a good effect on capturing respiratory dust at different velocities, and the dust reduction efficiency reaches a peak of 86.13 %. The momentum ratio and kinetic energy ratio of fog droplets to dust have a significant nonlinear effect on the removal of 5–50 μm dust from airborne airflow, with the removal efficiency of 10–50 μm dust showing a unimodal distribution as the momentum ratio and kinetic energy ratio increase. The results of this study provide data and theoretical support for determining the optimal dust mist coupling matching relationship between different types of droplets and dust under different lateral airflow velocities, and for efficient prevention and control of respiratory dust in coal mines.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"216 ","pages":"Pages 531-548"},"PeriodicalIF":3.7,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726227","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}

{"title":"Risk-based process design and operations through an operability approach","authors":"Beatriz Dantas,&nbsp;Austin Braniff,&nbsp;Claudemi A. Nascimento,&nbsp;Theodore Malencia,&nbsp;Fernando V. Lima,&nbsp;Yuhe Tian","doi":"10.1016/j.cherd.2025.03.010","DOIUrl":"10.1016/j.cherd.2025.03.010","url":null,"abstract":"<div><div>This work presents an integrated approach that combines process design, operations, and risk optimization through operability analysis. The proposed approach seeks to improve the overall process operations by quantifying the feasibility of maintaining a safe and viable operating region. Risk analysis is adapted as the metric to evaluate process safety as a function of safety-critical process design and operating variables. An operability mapping approach is first utilized to systematically screen the feasible steady-state design space at low-, medium-, or high-risk levels through comprehensive analyses of process design, uncertainties, and constraint violations. To further understand the open-loop dynamic behaviors, a Monte Carlo strategy is developed which can provide a probability of various system responses under uncertainty by simulating randomly sampled input and disturbance parameters. The open-loop analysis determines the safe operating bounds which are leveraged as path constraints for advanced control. Multi-parametric model predictive control is then applied to design the optimal risk-aware control strategy. Closed-loop validation is performed to demonstrate the efficacy of the proposed approach to achieve the desired process operability and safety ranges under disturbances. A case study is presented involving an exothermic reactor based on a real-world process safety accident at T2 Laboratories Inc.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"217 ","pages":"Pages 1-12"},"PeriodicalIF":3.7,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725399","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}

{"title":"Corrigendum to “Influence of computational parcel resolution on hydrodynamics and performance of reacting fluidized bed reactors” [Chem. Eng. Res. Des. 211 (2024) 269–284]","authors":"Adefarati Oloruntoba ,&nbsp;Hongliang Xiao ,&nbsp;Linlin Duan ,&nbsp;Yongmin Zhang","doi":"10.1016/j.cherd.2025.02.017","DOIUrl":"10.1016/j.cherd.2025.02.017","url":null,"abstract":"","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"216 ","pages":"Page 454"},"PeriodicalIF":3.7,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643177","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}

{"title":"Simulation study of heat transfer and cooling enhancement measures for slag particles in granulation chamber","authors":"Ruibin Xue,&nbsp;Shuzhong Wang,&nbsp;Jun Zhao,&nbsp;Daihui Jiang","doi":"10.1016/j.cherd.2025.03.015","DOIUrl":"10.1016/j.cherd.2025.03.015","url":null,"abstract":"<div><div>The steel industry, being one of the major contributors to global energy consumption and environmental pollution, has drawn significant attention to the management of its by-products, especially the treatment of blast furnace slag and the recovery of waste heat. Centrifugal granulation and waste heat recovery technology are considered the most promising solutions. However, their development is constrained by the limited heat exchange space within the granulation chamber, resulting in insufficient cooling rates for the granulated particles. This ultimately threatens the safe operation of the system. In this study, we established a heat exchange model for a granulation chamber that integrates various structures and enhanced cooling measures, investigating the flight heat exchange characteristics of particles within the chamber. The results indicate that setting the granulation chamber wall angle to 0° and maximizing the granulator height within the limited space can extend the impact time of slag particles by more than 0.2 s. Positioning the air outlet at the center and limiting its width to within 200 mm increases air flow resistance, further reducing the slag particle outlet temperature by 15 K. Side and edge winds increase the solid phase fraction of particles at exit by 20 % and 6 %, also reduces the impact wall temperature by 9.56°C and 3.37°C,demonstrating the significant advantages of enhanced cooling measures. This study provides guidelines and standards for the structural design of granulation chambers in industrial applications and offers a new perspective on enhanced cooling measures to prevent wall adhesion.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"216 ","pages":"Pages 499-514"},"PeriodicalIF":3.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681955","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}

{"title":"Optimisation of microfluidic synthesis of silver nanoparticles via data-driven inverse modelling","authors":"Konstantia Nathanael ,&nbsp;Sibo Cheng ,&nbsp;Nina M. Kovalchuk ,&nbsp;Rossella Arcucci ,&nbsp;Mark J.H. Simmons","doi":"10.1016/j.cherd.2025.03.014","DOIUrl":"10.1016/j.cherd.2025.03.014","url":null,"abstract":"<div><div>The informed choice of conditions to produce nanoparticles with specific properties for targeted applications is a critical challenge for nanoparticle manufacture. In this study, this problem is addressed taking as an example the synthesis of silver nanoparticles (AgNPs) using an inverse modelling approach, where a polynomial function was constructed using synthesis parameters, including nucleation (<span><math><msub><mrow><mi>k</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span>) and growth (<span><math><msub><mrow><mi>k</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span>) constants, collection/storage temperature (T), Reynolds number (<span><math><mi>Re</mi></math></span>), and the ratio of Dean number to Reynolds number (<span><math><mrow><mrow><mi>De</mi></mrow><mo>/</mo><mrow><mi>Re</mi></mrow></mrow></math></span>). This function was used to identify the parametric space for hydrodynamic conditions, with other parameters being held constant while employing Latin Hypercube Sampling (LHS) to explore initial guesses in the <span><math><mi>Re</mi></math></span> and <span><math><mrow><mrow><mi>De</mi></mrow><mo>/</mo><mrow><mi>Re</mi></mrow></mrow></math></span> domain. Data assimilation techniques were then applied to incorporate experimental data into the model, facilitating parameter identification and optimization, which resulted in improved predictions and reduced uncertainty. The inverse model was evaluated against unseen data, demonstrating good consistency between forward and inverse modelling paths for AgNP size prediction. Experimental data was used to validate the capability of the model to design AgNPs of a targeted size using specific set of chemicals in a microfluidic system. The integration of LHS and inverse modelling through data assimilation is shown to provide a robust framework for addressing uncertainty in nanoparticle manufacture.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"216 ","pages":"Pages 523-530"},"PeriodicalIF":3.7,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715684","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}

{"title":"Research on the mass transfer in gas-liquid flow of microchannels for CO2 absorption","authors":"Ye Liu,&nbsp;Li Jia,&nbsp;Xiaozhe Sun,&nbsp;Chao Dang","doi":"10.1016/j.cherd.2025.03.011","DOIUrl":"10.1016/j.cherd.2025.03.011","url":null,"abstract":"<div><div>Carbon capture technology has been recognized as an effective method for reducing greenhouse gas emissions. The experimental system utilizing monoethanolamine (MEA) solution in microchannel for the absorption of CO₂ from a mixed gas was developed. The flow and mass transfer characteristics of Taylor bubbles in T-shaped microchannel during the absorption process were analyzed. Due to surface tension effect, Taylor bubbles could not fully occupy the corner of the channel, leading to the generation of leakage flow. To accurately describe the extent of leakage flow and correct the flow parameters, section coefficient was introduced as a correction factor, and equivalent leakage factor was proposed to directly characterize the proportion of leakage flow relative to the total flow. Quantitative analysis indicated that the degree of leakage flow increased with liquid flow rate. The results demonstrated that under conditions of liquid phase concentration <em>C</em> (MEA) = 10 wt%, liquid phase flow rate <em>Q</em>_L = 70 mL/min, and gas phase flow rate <em>Q</em>_G = 70 mL/min, the maximum CO₂ absorption efficiency reached 96.36 %. Meanwhile, the mass transfer coefficient stabilized at 1.893 × 10⁻³ m/s, and the energy consumption for CO₂ capture was only 2.272 MJ/ kg CO₂.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"216 ","pages":"Pages 473-485"},"PeriodicalIF":3.7,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681954","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}

{"title":"Dispersion model for level control of bubbling fluidized beds with particle cross-flow","authors":"Stefan Thanheiser ,&nbsp;Markus Haider","doi":"10.1016/j.cherd.2025.02.038","DOIUrl":"10.1016/j.cherd.2025.02.038","url":null,"abstract":"<div><div>A fluidized bed with a large, continuous horizontal flow of particles (cross-flow) can lead to a sloped bed level, leaving a heat exchanger immersed in the fluidized bed covered by different amounts of particles. This facilitates particles bypassing the heat exchanger, thereby reducing its efficiency. Pressurized zones can be utilized to control the bed level along the particles' horizontal path, achieving a more even distribution of particles across the heat exchanger. Designing this level control system requires a physical model of the particle flow that accounts for the impact of pressurized zones, for which a new particle dispersion model was developed in this study. Dynamic simulations and experiments on a test rig were used to calibrate and validate the new particle dispersion model. The model was able to correctly predict the dynamic behavior of bed levels influenced by pressurized zones within a few millimeters. This model can be used to design and analyze a fluidized bed level control system. Further research on additional influencing factors of particle dispersion, in particular the heat exchanger's configuration, is still required to achieve general applicability of the new particle dispersion model.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"216 ","pages":"Pages 427-440"},"PeriodicalIF":3.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643128","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}

{"title":"Clopidogrel loaded nanostructured lipid carrier: Assembly, microstructure and cytotoxicity","authors":"Dipak D. Kumbhar ,&nbsp;Ankita R. Wankhede ,&nbsp;Poonam P. Warade ,&nbsp;Suraj S. Patil","doi":"10.1016/j.cherd.2025.03.008","DOIUrl":"10.1016/j.cherd.2025.03.008","url":null,"abstract":"<div><div>Here we designed an optimized NLC for the transport of CLP, an antiplatelet molecule, and further probed its microstructure, cytotoxicity and the stability. NLCs were attained through cavitation technology employing RSM-based factorial design (2³). Amount of lipid (X1), ultrasound power (X2), and sonication time (X3) were independent operational variables while Z-Avg (nm), PDI and ZP (mV) were the studied responses. The designed CLP-NLC was scrutinized for DLS, TEM, FESEM, ATR, PXRD, TGA, rheology, drug release and cytotoxicity. An optimized NLC had Z-Avg (217.5 nm), PDI (0.178), and ZP of −36.4 mV. Morphology investigation showed spherical NLCs. ATR analysis demonstrated H-bonding interactions between CLP and Imwitor ensuring drug solubility and holding in the lipid matrix. PXRD confirmed complete drug amorphization during processing pinpointing the influence of capryol (oil) on the formation of lower ordered crystal lattice of Imwitor. Designed NLCs showed dominance of elastic constituent and shear thinning behavior, an anomalous (n &gt; 0.5) type of CLP transport, and an excellent stability over six months. CLP loaded NLC showed significant cellular uptake and marked reduction in cytotoxicity. Thus the ultrasonically designed NLCs can entrap CLP, are biocompatible and safe for the human use, and with the reduced lipid crystallinity modulates the desired drug release.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"216 ","pages":"Pages 376-389"},"PeriodicalIF":3.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632000","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}

{"title":"Study on hydrodynamics and mass transfer performance of an efficient gas-liquid Circulation Swirl Tray for CO2 absorption","authors":"Fan Dequn,&nbsp;Zhang Hengrui,&nbsp;Dai Xin,&nbsp;Hu Dapeng","doi":"10.1016/j.cherd.2025.03.007","DOIUrl":"10.1016/j.cherd.2025.03.007","url":null,"abstract":"<div><div>A novel tray for removing carbon dioxide from natural gas is proposed, named Efficient gas-liquid Circulation Swirl Tray (ECST). The cyclone tubes are used as the main working units of it. Utilizing the perforated blades and negative pressure zone generated by swirling flow, a large flux cycle of mixing and separation between gas and liquid can be carried in this tray. The flow field distribution and flow characters of ECST were investigated by CFD simulation. The hydrodynamics and tray efficiency of it have been studied with a CO₂-NaOH system and were compared to Glitsch V1 valve tray. Experiments show that the relative entrainment rate of ECST is always below 0.01 and its weeping critical <em>F</em>₀ is reduced by 15–17 %. When <em>F</em>₀ = 32.3 m/s·(kg/m³)^0.5, the CO₂ absorption amount of ECST can reach 3.9 times that of V1, which highlights its extraordinary capability in enhancing mass transfer efficiency.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"216 ","pages":"Pages 441-453"},"PeriodicalIF":3.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643176","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}

{"title":"Numerical simulation on liquid-solid two-phase erosion characteristics of pipe bends with different bend angles","authors":"Chao Gao,&nbsp;Guiling Xu,&nbsp;Feihu Shen,&nbsp;Wenlong Du,&nbsp;Pengcheng Xu,&nbsp;Qi Zhang,&nbsp;Ping Lu","doi":"10.1016/j.cherd.2025.03.009","DOIUrl":"10.1016/j.cherd.2025.03.009","url":null,"abstract":"<div><div>Pipeline transportation is a very common mode of transportation in the energy and chemical industries. Pipeline structure has an important effect on liquid-solid two-phase flow characteristics, which is vital to reduce the erosion wear of pipe bend. In this paper, an Eulerian-Lagrangian approach with liquid-solid two-phase coupling is performed to investigate the erosion characteristics of pipe bends with different bend angles of 60°, 90°, 120°, 135°, 150° and 165°. The computation domain is a pipeline segment comprising of two straight pipe sections of 250 mm in length, and a pipe bend with an inner diameter of 25 mm, a bend radius of 37.5 mm. The inlet boundary condition is set as “velocity-inlet”, and the material of the wall is aluminium with a density of 2702 kg/m³. The outlet boundary condition is set as “outflow”, The wall boundary condition is set as “reflect”, and the outlet boundary condition is set as “escape”. The influences of bend angle, solid particle size, solid-phase mass flow rate and liquid-phase inlet velocity on erosion rate distribution, velocity distribution, particle trajectory, and pressure distribution have been analyzed with CFD simulation combined with Discrete Phase Model (DPM). Results show that erosion mainly occurs on the external side of inner wall in the bend pipe section, with the 165° pipe bend exhibiting the lowest erosion rate and the erosion rate decreases with the increase of the bend angle. Meanwhile, the increase of solid particle size, solid-phase mass flow rate and liquid-phase inlet velocity will all aggravate the bend erosion. The flow field inside the pipe bend is significantly affected by the bend angle and the liquid-phase inlet velocity, while the particle characteristic parameters, including solid particle size and solid-phase mass flow rate have less effect. Furthermore, the flow field in the pipe bend shows the characteristics of secondary flow, with the increase of pipe bend angle, the high-pressure area on the inner outer wall of the pipe bend decreases gradually. The research results can provide some theoretical support for the optimal design of pipe bends in related industrial fields.</div></div>","PeriodicalId":10019,"journal":{"name":"Chemical Engineering Research & Design","volume":"216 ","pages":"Pages 390-413"},"PeriodicalIF":3.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632001","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}