International Journal of Chemical Reactor Engineering最新文献_第9页

DEM simulation of biomass pyrolysis in a novel interconnected screw reactor 新型互连螺杆反应器中生物质热解的DEM模拟

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-12-22 DOI: 10.1515/ijcre-2022-0171

Wentao Ou, Tong Liu, Chen Wang, R. Xiao, Dewang Zeng

{"title":"DEM simulation of biomass pyrolysis in a novel interconnected screw reactor","authors":"Wentao Ou, Tong Liu, Chen Wang, R. Xiao, Dewang Zeng","doi":"10.1515/ijcre-2022-0171","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0171","url":null,"abstract":"Abstract A novel interconnected screw reactor was proposed to convert biomass to bio-oil and bio-char in this study. This reactor is expected to achieve direct heating of pyrolysis feedstocks and increase the reactor processing capacity through the recycling of biochar between the inner and outer screw. Here, we simulated the biomass particle flow and reaction process in this interconnected reactor by an extended discrete element method (DEM), the effect of char circulation on the reactor temperature distribution and the product yields are investigated. The results show that the char circulation increased the heating rate of biomass. At the inner and outer screw speed of 10 rpm and 1 rpm, the char circulation can reach 5.15 kg/h and the average temperature of biomass under the char circulation is about 30 °C higher than that without char circulation. The reaction simulation results show that at 500 °C, the yield of char, bio-oil and non-condensable gas are 18.9%, 40.6% and 40.5% respectively. The predicted product yields of char, bio-oil and non-condensable gas are also in good agreement with the experimental measurements.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49481137","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 mechanical stirring by eccentric impeller stirring system in zinc hydrometallurgy process for cadmium removal 离心叶轮搅拌系统在湿法炼锌除镉工艺中的强化机械搅拌

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-12-15 DOI: 10.1515/ijcre-2022-0148

Wenjie Li, Shibo Wang, Hua Wang, Chunlin Li, Y. Zhai, Jianxin Xu, Q. Xiao

{"title":"Enhanced mechanical stirring by eccentric impeller stirring system in zinc hydrometallurgy process for cadmium removal","authors":"Wenjie Li, Shibo Wang, Hua Wang, Chunlin Li, Y. Zhai, Jianxin Xu, Q. Xiao","doi":"10.1515/ijcre-2022-0148","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0148","url":null,"abstract":"Abstract The fluid in the reactor can be poorly mixed, so an eccentric impeller is proposed to improve the fluid mixing efficiency. In this investigation, numerical simulations and cadmium removal experiments for the purification of zinc sulfate solution were conducted. The effect of eccentric impellers on the purification efficiency was discussed. The mechanism of the effect of concentric and eccentric arrangement of stirring impellers on mixing in the stirred tank was elucidated. The results showed that the average axial velocity of the eccentric impeller stirring system (EIS) was 131.52% of that of the concentric stirring system (CS) and 134.23% of that of the eccentric stirring system (ES). In the purification and removal of cadmium in the zinc hydrometallurgy experiment, unit ion purification energy was introduced to quantify the energy consumed for each 1% of Cd2+ removed. The eccentric impeller shortens the reaction time by 40% and reduces the reaction energy consumption by 31.8% compared to the non-eccentric impeller. Compared to CS and ES, EIS disrupts the periodicity of fluid flow and facilitates the destruction of isolated mixing regions. EIS can enhance mechanical stirring to improve purification efficiency.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"0 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45843281","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 dual-DOF PI-PD control of integrating-type chemical processes 集成型化工过程的增强双自由度PI-PD控制

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-12-12 DOI: 10.1515/ijcre-2022-0156

D. Das, S. Chakraborty, G. Raja

引用次数: 7

Ammoniacal leaching behavior and regularity of zinc ash 锌灰的氨浸行为及规律

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-12-05 DOI: 10.1515/ijcre-2022-0087

Hailin Long, X. Tan, Shufang Ni, Aiyuan Ma, Shiwei Li, De‐qing Zhu

{"title":"Ammoniacal leaching behavior and regularity of zinc ash","authors":"Hailin Long, X. Tan, Shufang Ni, Aiyuan Ma, Shiwei Li, De‐qing Zhu","doi":"10.1515/ijcre-2022-0087","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0087","url":null,"abstract":"Abstract In this work, a new hydrometallurgical process was developed to treat zinc ash produced from the hot galvanizing industry. The theoretical analysis shows the feasibility of dissolving zinc ash in the NH3–NH4Cl–H2O system, and the dissolution products are predominantly composed of Zn (NH3)4 2+. The impacts of different experimental conditions were examined, and the leaching ratio of zinc was as high as 96.4% under the conditions of NH3/NH4 + ratio of 1:1, liquid/solid of 9:1, total ammonia concentration of 8 mol/L and the stirring speed of 250 rpm at 313 K for 120 min. The kinetics of the leaching process were investigated and the calculated apparent activation energy was approximately 4.69 kJ/mol, which indicated that the zinc ash leaching process was controlled by diffusion-controlled. As revealed by the determination of impurity ions, on one hand, there were fewer impurities in the leaching solution, and the concentrations of Fe2+ and Pb2+ in solution are less than 0.02 mg/L and 0.05 mg/L respectively; on the other hand, there was no need for further impurity removal in this process. The proposed process has a certain application value in treating zinc ash.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"21 1","pages":"895 - 906"},"PeriodicalIF":1.6,"publicationDate":"2022-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45378318","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: 2

Experimental study on the combustion characteristics of blends of sugarcane bagasse, Nanning meager-lean coal and petroleum coke 甘蔗渣与南宁贫煤、石油焦共混物燃烧特性的实验研究

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-12-01 DOI: 10.1515/ijcre-2022-0179

Ge Xiong, Yong Zhang, Baosheng Jin

{"title":"Experimental study on the combustion characteristics of blends of sugarcane bagasse, Nanning meager-lean coal and petroleum coke","authors":"Ge Xiong, Yong Zhang, Baosheng Jin","doi":"10.1515/ijcre-2022-0179","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0179","url":null,"abstract":"Abstract Multi-fuel operation of the coal-fired boiler is considered as a promising option for boiler reformation to reduce carbon emissions while recycling solid waste. In this work, co-combustion characteristics of sugarcane bagasse, Nanning meager-lean coal and petroleum coke under different conditions were investigated in detail. And the interaction between raw materials was analyzed. Finally, the kinetic parameters were estimated by using the first-order response model. The results show that differences in petroleum coke content affect the appearance of weight loss peaks in the DTG curve. When the proportion of sugarcane bagasse is between 40 and 60%, the ignition and burnout characteristic indexes are particularly sensitive to variations in sugarcane bagasse content. Additionally, the interaction between the three raw materials is promoted as the proportion of petroleum coke is less than 40%. The kinetic analysis suggests that the increase of heating rate is conducive to the precipitation of volatiles, but there is an optimal heating rate for the fixed carbon combustion stage. The change of particle size combination has little effect on the activation energy of the volatile fraction combustion stage. This study provides a reference to ensure the stable and high-efficient operation of the coal-fired boilers during the multi-fuel combustion.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"21 1","pages":"879 - 894"},"PeriodicalIF":1.6,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48939168","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

A study on the adsorption property and mechanism of β-cyclodextrin/polyvinyl alcohol/polyacrylic acid hydrogel for ciprofloxacin β-环糊精/聚乙烯醇/聚丙烯酸水凝胶对环丙沙星的吸附性能及机理研究

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-28 DOI: 10.1515/ijcre-2022-0089

Jintao Tian, Hongyu Zhang, Xinyu Zhao, W. Liu, Yasser Fakhri

{"title":"A study on the adsorption property and mechanism of β-cyclodextrin/polyvinyl alcohol/polyacrylic acid hydrogel for ciprofloxacin","authors":"Jintao Tian, Hongyu Zhang, Xinyu Zhao, W. Liu, Yasser Fakhri","doi":"10.1515/ijcre-2022-0089","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0089","url":null,"abstract":"Abstract Polyvinyl alcohol (PVA), acrylic acid (AA), and β-cyclodextrin (β-CD) were used as monomers, and ammonium persulfate was used as an initiator. Orthogonal tests were optimized the experimental condition, and aqueous polymerization was used to prepare poly-β-cyclodextrin/polyvinyl alcohol/polyacrylic acid (β-CD/PVA/PAA) hydrogel. The samples were characterized by FT-IR (Fourier transform infrared), SEM (Scanning electron microscopy), and XRD (X-ray diffraction). β-CD/PVA/PAA hydrogel was analyzed, which influenced external environmental factors on the β-CD/PVA/PAA hydrogel adsorption performance, and the kinetic behavior of β-CD/PVA/PAA hydrogel on ciprofloxacin (CIP) adsorption was explored. The results concluded that the prepared β-CD/PVA/PAA hydrogel has a well-defined three-dimensional network structure. The decrease in the pH of the CIP solution and the adsorption temperature reduces the adsorption reaction of β-CD/PVA/PAA hydrogel on CIP. The kinetics of CIP adsorption by β-CD/PVA/PAA hydrogel confirmed the pseudo-second-order kinetic model (R2 > 0.997), the maximum equilibrium adsorption amounts is 372.12 mg/g, the removal rate reaches 74.42%. The adsorption process was mainly chemisorption, the adsorption isotherm fits the Freundlich adsorption isotherm model (R2 > 0.946), and the adsorption process was heterogeneous with multi-molecular layer adsorption. The adsorption process inclined more toward the adsorption of inhomogeneous multi-molecular layers. The β-CD/PVA/PAA hydrogel retained 80% adsorption properties after three adsorption-desorption under optimal conditions.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"21 1","pages":"753 - 765"},"PeriodicalIF":1.6,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46909741","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

Performance evaluation of adaptive based model predictive control for ethylene glycol production from dimethyl oxide hydrogenation 基于自适应模型预测控制的环氧二甲酯加氢制乙二醇性能评价

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-22 DOI: 10.1515/ijcre-2022-0085

F. S. Rohman, Muhammad Syafiq Sulaiman, M. N. Murat, N. Aziz

引用次数: 0

Influence of blast volume on hot blast distribution rule around the hearth circumferentially 风量对炉膛周向热风分布规律的影响

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-17 DOI: 10.1515/ijcre-2022-0135

B. Liu, Yuman Che, Ben-hui Shi, Hai-feng Li, Jin-lin Lu

{"title":"Influence of blast volume on hot blast distribution rule around the hearth circumferentially","authors":"B. Liu, Yuman Che, Ben-hui Shi, Hai-feng Li, Jin-lin Lu","doi":"10.1515/ijcre-2022-0135","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0135","url":null,"abstract":"Abstract Based on Ansteel’s new No. 5 blast furnace (BF), the distribution rule of hot blast on the circumference of blast furnace hearth under different blast volume was studied. The results show that, the blast volume distribution rule is similar under different blast volumes, that is, there are four regions with large blast volumes at the 0°, 90°, 180° and 270° positions of the bustle pipe. Under different blast volumes, the difference of blast volume near 90° and 270° is close to 0, which has a minor effect on the uneven distribution of gas flow and circumferential asymmetry of packed bed in BF. However, the blast volume of the tuyere near the 180° is always larger than that of the tuyere near 0°, and with the increase of blast volume from 4600 to 5000 nm3/min, this difference keeps increasing, 0.69 to 0.95 nm3/min. This phenomenon will lead to an increase in the coke consumption on the 180° side, and cause a higher descending velocity of coke than that on the 0° side, this difference increases from 0.39 to 0.54 m, which could further result in the unevenness of blast volume distribution and the circumferential asymmetry of packed bed in BF. Comparing with the actual production in Ansteel, the results obtained in this work are in good agreement with the phenomenon in practical production.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"21 1","pages":"679 - 686"},"PeriodicalIF":1.6,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44455682","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

The degradation of an aromatic organic compound by Aspergillus niger var tubingensis Ed8 produces metabolites that reduce Cr (VI) 黑曲霉（Aspergillus niger var tubingesis Ed8）对芳香族有机化合物的降解产生减少Cr（VI）的代谢产物

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-15 DOI: 10.1515/ijcre-2022-0074

M. Lizardi-Jiménez, Álvaro Marín-Hernández, A. Tomasini-Campocosio, A. Coreño-Alonso

{"title":"The degradation of an aromatic organic compound by Aspergillus niger var tubingensis Ed8 produces metabolites that reduce Cr (VI)","authors":"M. Lizardi-Jiménez, Álvaro Marín-Hernández, A. Tomasini-Campocosio, A. Coreño-Alonso","doi":"10.1515/ijcre-2022-0074","DOIUrl":"https://doi.org/10.1515/ijcre-2022-0074","url":null,"abstract":"Abstract Chromium Cr(VI) is a highly toxic environmental contaminant for any organism, its presence in the environment is mainly due to anthropogenic activities. The use of biotechnology has been implemented for the treatment of effluents contaminated with Cr(VI).Our working group has isolated several fungi and bacteria capable of removing Cr(VI) from the culture medium. Aspergillus niger var tubingensis Ed8 is a strain that can produce metabolites which reduce Cr (VI) to Cr (III). The objective of this work was to determine the effect of sodium salicylate on the growth of this strain and on the Cr(VI) reduction system, as well as to identify the metabolites that are produced from sodium salicylate. Our results show that the Culture medium containing sodium salicylate (20 mM) inhibits strain growth compared to the control condition (0 mM). However, it increases the specific reduction capacity of Cr (VI) red/mg Biomass in order of magnitude. Analysis of the culture medium corresponding to 48 h of incubation shows the presence of catechol and salicylate diminution. In addition, as a product of the enzymatic activity of a cell-free cellular extract, after 24 h of incubation, the consumption of salicylate is detected, as well as the presence of peaks corresponding to resorcinol and catechol. Our results show that it is possible to increase the Cr(VI) reducing capacity of the Ed8 strain, depending on the composition of the culture medium.","PeriodicalId":51069,"journal":{"name":"International Journal of Chemical Reactor Engineering","volume":"21 1","pages":"473 - 480"},"PeriodicalIF":1.6,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49026118","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

Analytical approach in higher predict residual error on MHD mixed convective motion of MoS2 engine-oil based nanofluid MoS2机油基纳米流体MHD混合对流运动预测残差较高的分析方法

IF 1.6 4区工程技术

International Journal of Chemical Reactor Engineering Pub Date : 2022-11-11 DOI: 10.1515/ijcre-2022-0149

Shankar Rao Munjam, M. Khan, R. Sharma, R. Seshadri, O. Bafakeeh, Minnie Malik

引用次数: 0