International Journal of Chemical Reactor Engineering最新文献

VOCs (toluene) removal from iron ore sintering flue gas via LaBO3 (B = Cu, Fe, Cr, Mn, Co) perovskite catalysts: experiment and mechanism 通过 LaBO3（B = 铜、铁、铬、锰、钴）包晶催化剂去除铁矿烧结烟气中的挥发性有机化合物（甲苯）：实验与机理

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2024-06-04 DOI: 10.1515/ijcre-2024-0081

Long Ding, Hexi Zhao, Yafei Li, Yi-fan Wang, Hongming Long

{"title":"VOCs (toluene) removal from iron ore sintering flue gas via LaBO3 (B = Cu, Fe, Cr, Mn, Co) perovskite catalysts: experiment and mechanism","authors":"Long Ding, Hexi Zhao, Yafei Li, Yi-fan Wang, Hongming Long","doi":"10.1515/ijcre-2024-0081","DOIUrl":"https://doi.org/10.1515/ijcre-2024-0081","url":null,"abstract":"\u0000 The challenges posed by volatile organic compound (VOC) emissions in iron ore sintering flue gas are significant. La-based perovskite catalysts offer a promising solution for efficiently degrading VOCs. In this study, a series of LaBO3 (B = Cu, Fe, Cr, Mn, Co) perovskite catalysts were synthesized using the sol-gel method. The influence of various B-site elements on the catalyst’s structure and surface chemical properties was thoroughly examined. Simulations were conducted to assess the VOC reduction capabilities of these catalysts under conditions mimicking sintering flue gas composition. It was found that the crystallite size of the perovskite catalyst decreases as the ionic radius of the B-site elements increases, while the specific surface area, total pore volume, and average pore size increase correspondingly. Notably, LaCoO3 and LaMnO3 demonstrated exceptional activity, attributed primarily to their elevated surface oxygen concentration and oxygen migration capability, positioning them as highly promising materials for further development. Furthermore, a proposed mechanism elucidates the La-based perovskite catalytic reduction of toluene, wherein lattice oxygen and adsorbed oxygen undergo mutual conversion during the oxidation process. This mechanism aligns with the L-H and M-v-K models, providing a comprehensive understanding of the catalytic process.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"19 8","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141266707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ethyl acetate production by Fischer esterification: use of excess of acetic acid and complete separation sequence 通过费歇尔酯化法生产乙酸乙酯：使用过量乙酸和完整的分离程序

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2024-05-27 DOI: 10.1515/ijcre-2024-0019

Pooja P. Sanap, Amit M. Katariya, Yogesh S. Mahajan

引用次数: 0

Thermodynamic and kinetic study on the catalysis of tributyl aconitate by Amberlyst-15 in a cyclic fixed-bed reactor Amberlyst-15 在循环固定床反应器中催化丙酮酸三丁酯的热力学和动力学研究

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2024-05-27 DOI: 10.1515/ijcre-2023-0222

Ailin Deng, Qiqi Ma, Yunxiang Hu, Xin Zhang, S. Yang, Nianhua Song, Wuji Sun, Xuejun Liu, Jianbing Ji

{"title":"Thermodynamic and kinetic study on the catalysis of tributyl aconitate by Amberlyst-15 in a cyclic fixed-bed reactor","authors":"Ailin Deng, Qiqi Ma, Yunxiang Hu, Xin Zhang, S. Yang, Nianhua Song, Wuji Sun, Xuejun Liu, Jianbing Ji","doi":"10.1515/ijcre-2023-0222","DOIUrl":"https://doi.org/10.1515/ijcre-2023-0222","url":null,"abstract":"\u0000 Tributyl aconitate is a new type of alternative plasticizer to phthalates. Amberlyst-15 was used to catalyze the esterification of aconitic acid and n-butanol for the preparation of tributyl aconitate in a cyclic fixed-bed reactor. The influence of the reaction conditions on the conversion was investigated. The results showed that the conversion of aconitic acid increased significantly with the rise of temperature and catalyst loading. The reaction conditions were optimized as: temperature: 115 °C; initial mass ratio of AA and n-butanol: 1:4; catalyst loading: 25 %; reaction absolute pressure: 85 kPa; volume flow rate: 30 mL min−1. Thermodynamics and kinetics of the reaction was studied. The non-ideality of the reaction system was rectified using the UNIFAC group contribution method. The kinetic process was simulated using the pseudo-homogeneous (PH) model, Eley-Rideal (E-R) model, and Langmuir-Hinshelwood-Hougen-Watson (LHHW) model. The results revealed that the E-R model exhibited superior suitability in simulating the kinetic process.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"46 5","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141098352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

R dot approach for kinetic modelling of WGS over noble metals 用 R dot 方法建立贵金属上 WGS 的动力学模型

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2024-05-24 DOI: 10.1515/ijcre-2023-0231

Ravikiran Mandapaka

引用次数: 0

Retraction of: Computational fluid dynamic simulations to improve heat transfer in shell tube heat exchangers 撤回：通过计算流体力学模拟改善壳管式热交换器的传热性能

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2024-05-24 DOI: 10.1515/ijcre-2024-2001

Rahmad Syah, A. Bateni, Kamran Valizadeh, M. Elveny, Mehdi Shaeban Jahanian, D. Ramdan, A. Davarpanah

引用次数: 0

Design, characterization and performance evaluation of a laboratory-scale continuous reactor for sono-Fenton treatment of simulated wastewater 用于模拟废水声波芬顿处理的实验室规模连续反应器的设计、特征描述和性能评估

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2024-05-24 DOI: 10.1515/ijcre-2023-0238

M. Akram, Abhyuday Mallick, Debasish Sarkar, Sampa Chakrabarti

{"title":"Design, characterization and performance evaluation of a laboratory-scale continuous reactor for sono-Fenton treatment of simulated wastewater","authors":"M. Akram, Abhyuday Mallick, Debasish Sarkar, Sampa Chakrabarti","doi":"10.1515/ijcre-2023-0238","DOIUrl":"https://doi.org/10.1515/ijcre-2023-0238","url":null,"abstract":"\u0000 A laboratory scale continuous flow stirred tank reactor (CFSTR) has been developed for ultrasound-assisted Fenton degradation of Rhodamine B dye in simulated wastewater and its performances have been studied in the present work. The sono-reactor was made of glass, 6 cm in diameter and 17.5 cm in height; fitted with a cooling water jacket. The volume was about 0.4 L and the flow rate of dye solution was 20 mL min−1. Ultrasound was provided with a 120 W probe-type sonicator. The hydrodynamic characteristics were studied by RTD studies and CFD analysis in COMSOL Multiphysics software. The CFD analysis showed the reactor to be behaving like a CSTR with bypassing leading to a short residence time. The optimum treatment conditions in this reactor for degrading Rhodamine B solution were determined using Response Surface Methodology. A model equation correlating the decolorization percentage with the initial dye concentration, H2O2 and Fe2+ dosage (Fenton’s reagent) was developed which can predict the decolorization with a high degree of accuracy. Under optimum conditions, the percent decolorization was 55 and the corresponding COD removal was 15 %. A continuous sono-Fenton reactor, if scaled up properly, can be useful for degradation of dark coloured refractory organics in wastewater where photo-Fenton reaction is ineffective.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"43 10","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141102100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Airlift bioreactors for bioremediation of water contaminated with hydrocarbons in agricultural regions 用于对农业区受碳氢化合物污染的水体进行生物修复的气举生物反应器

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2024-05-21 DOI: 10.1515/ijcre-2024-0009

E. J. Sandoval-Herazo, Israel Rodríguez-Torres, G. Espinosa-Reyes, M. Lizardi-Jiménez

引用次数: 0

Mechanism analysis and mixing characterization of variable-speed mechanical mixing enhancement 变速机械搅拌的机理分析和搅拌特性分析

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2024-04-19 DOI: 10.1515/ijcre-2023-0239

Yuchen Lin, Shibo Wang, Hua Wang, Jianxin Xu, Q. Xiao

{"title":"Mechanism analysis and mixing characterization of variable-speed mechanical mixing enhancement","authors":"Yuchen Lin, Shibo Wang, Hua Wang, Jianxin Xu, Q. Xiao","doi":"10.1515/ijcre-2023-0239","DOIUrl":"https://doi.org/10.1515/ijcre-2023-0239","url":null,"abstract":"\u0000 In response to the observed phenomenon of poor fluid mixing within the reactor, this study proposes a novel mixing method to enhance fluid mixing efficiency. In this study, numerical simulation and purification tests were carried out for the purification of zinc sulfate solution. Numerical simulations were conducted to compare the effects of variable-speed stirring and uniform-speed stirring on mixing efficiency, considering both momentum transfer process and mass transfer process. The purification test further demonstrated a significant improvement in the reaction rate under variable-speed stirring, as evidenced by the analysis of purification efficiency and microscopic morphology. It was elaborated that the enhancement mechanism of variable-speed stirring involved disrupting the periodic order structure in the tank, leading to the generation of a multi-scale vortex that increased stirring kinetic energy to form a shear force. This force contributed to reducing the velocity slip between the impurity ions and zinc particles, consequently decreasing reaction time and enhancing purification rate. The results indicated that sinusoidal stirring yielded the most effective mixing. When implemented in practical production settings, it enhanced dimensionless mixing efficiency by 24.83 % compared to the homogeneous stirring system. Additionally, it reduced reaction time by 15.47 % and decreased mixing energy per unit volume by 32.38 %, while simultaneously lowering energy consumption by 24.77 %.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":" 365","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140682453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced sonocatalytic degradation of Acid Red 27 with Fe2O3 catalyst: a kinetic study 利用 Fe2O3 催化剂增强酸性红 27 的声催化降解：动力学研究

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2024-04-16 DOI: 10.1515/ijcre-2024-0040

Suha Abad, Ruqaiya Aziz, Mohd. Junaid Khalil, Muhammad Muhitur Rahman, Mohammad M. Hossain

{"title":"Enhanced sonocatalytic degradation of Acid Red 27 with Fe2O3 catalyst: a kinetic study","authors":"Suha Abad, Ruqaiya Aziz, Mohd. Junaid Khalil, Muhammad Muhitur Rahman, Mohammad M. Hossain","doi":"10.1515/ijcre-2024-0040","DOIUrl":"https://doi.org/10.1515/ijcre-2024-0040","url":null,"abstract":"\u0000 This study is focused on elucidating the potential effectiveness of degradation as a method to eliminate dyes from aqueous systems. Specifically, it delves into the influence of ultrasound energy on the degradation kinetics of a dye. The research findings underscore the notable impact of ultrasound energy in accelerating the reaction rate constant (k\u0000 p), with the degradation kinetics exhibiting a conformity to first-order kinetics. An integral aspect of the study involves the establishment of a robust relationship between time and concentration by integrating the equation governing the degradation of the dye. Additionally, the determination of the rate constant, derived from the gradients of the graphs, attests to the model’s fitting accuracy. Intriguingly, the outcomes of this analysis reveal no discernible structural changes in the dye. The accuracy of the model is further underscored by the establishment of linear relations derived from experimental data. Summarily, this kinetic study provides invaluable insights into the multifaceted impact of ultrasound energy and the Fe2O3 catalytic influence on both the degradation kinetics of the dye. The comprehensive nature of the investigation enhances our understanding of the intricate processes involved, contributing significantly to the broader field of water treatment and dye removal from aqueous environments.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"32 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140695265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of polymers pyrolysis in a solid-gas conical spouted bed: CFD simulation 固体-气体锥形喷嘴床聚合物热解研究：CFD 模拟

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2024-04-03 DOI: 10.1515/ijcre-2023-0209

Sobhan Jafari, Hadi Soltani, M. Gholizadeh

{"title":"Investigation of polymers pyrolysis in a solid-gas conical spouted bed: CFD simulation","authors":"Sobhan Jafari, Hadi Soltani, M. Gholizadeh","doi":"10.1515/ijcre-2023-0209","DOIUrl":"https://doi.org/10.1515/ijcre-2023-0209","url":null,"abstract":"\u0000 The hydrodynamics of a conical spouted bed was simulated utilizing the Eulerian–Eulerian Two-Fluid Model (TFM) incorporating a kinetic theory of granular flows. The simulations were confirmed with experimental data. To accurately examine the pyrolysis process, the hydrodynamics of the solid bed as well as the heat transfer inside it were analysed separately by considering a precise synthetic model. The effects of gas velocity, particle size, bed length, and temperature were thoroughly investigated. The results indicated that the amount of relative standard deviation increases with an increase in the inlet velocity into the bed. This amount of deviation at the inlet velocity (0.6 m/s for tar and gas flow to its maximum value of 9.1 and 9.4) is not desirable in product production and should be modified so that the amount of gas flow increases and the tar produced reaches the minimum possible amount. Also, the graphs of the relative standard deviation in terms of temperature indicate that the increase in temperature from 730 to 950 K is associated with a relatively smaller fluctuation of the relative standard deviation so that at the temperature of 730 K, it is 7.2 % for tar and 6.4 % for gas flow, while at temperature of 950 K, it is 6.5 % for wire and 6.8 % for gas flow. Finally, the results determined that small-diameter particles have a more significant fountain height and also higher velocity in the spout section.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"58 7","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140748539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0