Applied Petrochemical Research最新文献_第8页

Modelling and simulation of an industrial RFCCU-riser reactor for catalytic cracking of vacuum residue 真空渣油催化裂化工业rfccu -提升管反应器的建模与仿真

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Applied Petrochemical Research Pub Date : 2018-09-28 DOI: 10.1007/s13203-018-0212-y

Olaosebikan Abidoye Olafadehan, Opeyemi Praise Sunmola, Adeleke Jaiyeola, Vincent Efeovbokhan, Olubunmi Grace Abatan

{"title":"Modelling and simulation of an industrial RFCCU-riser reactor for catalytic cracking of vacuum residue","authors":"Olaosebikan Abidoye Olafadehan, Opeyemi Praise Sunmola, Adeleke Jaiyeola, Vincent Efeovbokhan, Olubunmi Grace Abatan","doi":"10.1007/s13203-018-0212-y","DOIUrl":"https://doi.org/10.1007/s13203-018-0212-y","url":null,"abstract":"A one-dimensional adiabatic mathematical model was developed for the riser reactor of an industrial residue fluid catalytic cracking unit (RFCCU). A seven-lump kinetic model was presented for the catalytic cracking of vacuum residue, taking cognisance of diffusion resistance, which is a departure from the general norm in the literature. Also, heat transfer resistance between the fluid and solid phases was incorporated into the energy balances for instantaneous and one-dimensional vaporization of feedstock. The developed model was a set of twelve coupled, highly non-linear and stiff ordinary differential equations, ODEs, which was numerically solved with an implicit MATLAB built-in solver, ode23t, designed deliberately for handling stiff differential equations to circumvent the problem of instability associated with explicit methods. An excellent agreement was achieved between the industrial RFCCU plant data and the simulated results of this study, with average absolute deviation being?<?±?5% for instantaneous vaporization of feedstock in all cases investigated. Moreover, the simulated results revealed that half of the reactor was relatively redundant as this accounted for only 3% of the conversion. Hence, the findings of this study could be useful to the production practice for the Khartoum Refinery Company.","PeriodicalId":472,"journal":{"name":"Applied Petrochemical Research","volume":"8 4","pages":"219 - 237"},"PeriodicalIF":0.125,"publicationDate":"2018-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13203-018-0212-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5098750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Refining in Nigeria: history, challenges and prospects 尼日利亚的炼油:历史、挑战和前景

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Applied Petrochemical Research Pub Date : 2018-09-27 DOI: 10.1007/s13203-018-0211-z

Anthony Ogbuigwe

引用次数: 27

Kinetics of African pear seed oil (APO) methanolysis catalyzed by phosphoric acid-activated kaolin clay 磷酸活化高岭土催化非洲梨籽油甲醇分解动力学研究

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Applied Petrochemical Research Pub Date : 2018-09-11 DOI: 10.1007/s13203-018-0210-0

Okechukwu D. Onukwuli, Callistus N. Ude

{"title":"Kinetics of African pear seed oil (APO) methanolysis catalyzed by phosphoric acid-activated kaolin clay","authors":"Okechukwu D. Onukwuli, Callistus N. Ude","doi":"10.1007/s13203-018-0210-0","DOIUrl":"https://doi.org/10.1007/s13203-018-0210-0","url":null,"abstract":"Kinetics and mechanism of heterogeneous transesterification reaction of African pear seed oil (APO) catalyzed by phosphoric acid-activated kaolin clay to produce biodiesel were investigated. Heterogeneous catalyst synthesized by activating clay with phosphoric acid was used to examine the effect of time, temperature, methanol/oil molar ratio, catalyst concentration and agitation speed on the production of biodiesel. The kinetics was studied using two elementary reaction mechanisms: Eley–Rideal (ER) and Langmuir–Hinshelwood–Hougen–Watson (LHHW). The results obtained showed that the clay belongs to kaolinite group and acid-activated clay catalyst, AAC was able to convert APO to standard biodiesel with the variation of catalyst concentration, temperature methanol, speed and reaction time having significant effect in the production. About 78–80% biodiesel production was obtained with 10:1 methanol/oil molar ratio, 3?wt% AAC catalyst concentration, time 3?h, speed 300?rpm and at 60?°C temperature. The kinetics result revealed that the LHHW is the most reliable representation of the experimental data using acid-activated clay catalyst with surface reaction between adsorbed triglyceride and adsorbed methanol as rate determining step (RDS). The activation energy for the forward reaction was determined to be 10.08?kJ/mol. Hence, the production of biodiesel from non edible oil APO with cheap and available heterogeneous catalyst (AAC) is achievable.","PeriodicalId":472,"journal":{"name":"Applied Petrochemical Research","volume":"8 4","pages":"299 - 313"},"PeriodicalIF":0.125,"publicationDate":"2018-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13203-018-0210-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4481946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Catalytic pyrolysis of waste polypropylene using Ahoko kaolin from Nigeria 利用尼日利亚Ahoko高岭土催化热解废聚丙烯

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Applied Petrochemical Research Pub Date : 2018-09-01 DOI: 10.1007/s13203-018-0207-8

Ibrahim Gbolahan Hakeem, Folorunsho Aberuagba, Umaru Musa

{"title":"Catalytic pyrolysis of waste polypropylene using Ahoko kaolin from Nigeria","authors":"Ibrahim Gbolahan Hakeem, Folorunsho Aberuagba, Umaru Musa","doi":"10.1007/s13203-018-0207-8","DOIUrl":"https://doi.org/10.1007/s13203-018-0207-8","url":null,"abstract":"The aim of this study is to convert polypropylene waste into usable liquid fuel via pyrolysis technique using kaolin as a low-cost catalyst. Waste polypropylene was thermally and catalytically degraded in a chemical vapour deposition (CVD) horizontal glass reactor at a temperature of 450?°C, residence time of 30?min, and heating rate of 30?°C/min. The kaolin clay was characterized by XRF analysis while the ultimate and proximate analysis of the polypropylene feed carried out gave combustible materials content of 93.77?wt%, fixed carbon of 1.62?wt%, calorific value of 45.20?MJ/kg and elemental composition with carbon (83.65%), hydrogen (14.27%), oxygen (0.15%), sulphur (0.1%), chlorine (1.16%), and nitrogen (0.67%). Thermal cracking was carried out in the absence of catalyst and the process gave a yield of liquid, gaseous, and solid products of 67.48, 8.85, and 23.67?wt%, respectively. Furthermore, kaolin clay was employed as a catalyst in catalytic pyrolysis of the same feedstock for catalyst-to-plastic ratio of 1:1, 1:2, 1:3, and 1:4 at the same operating parameters as in thermal cracking. Optimum yield was obtained at a catalyst-to-plastic ratio of 1:3 with a yield of 79.85, 1.48, and 18.67?wt% for liquid, gaseous, and solid products, respectively. The liquid products obtained for both thermal and catalytic cracking at optimum conditions were characterized for their suitability as fuel. The properties determined were density, viscosity, flash point, fire point, pour point, and calorific value. The results suggest that catalytic pyrolysis produced liquid products, whose properties are comparable to conventional fuels (gasoline and diesel oil) than that produced through thermal pyrolysis. FTIR analysis of the liquid product from catalytic pyrolysis also shows that it contains hydrocarbons with different functional groups such as aromatics, olefins, carbonyl, amines, sulphides, and hydroxyl.","PeriodicalId":472,"journal":{"name":"Applied Petrochemical Research","volume":"8 4","pages":"203 - 210"},"PeriodicalIF":0.125,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13203-018-0207-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4062742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 44

Determination of limit of stability profiles for liquefied natural gas: a thermodynamic approach 液化天然气稳定性曲线极限的测定:热力学方法

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Applied Petrochemical Research Pub Date : 2018-08-29 DOI: 10.1007/s13203-018-0209-6

Faith Uchenna Babalola, Wasiu Emmanuel Ogunkoya

引用次数: 0

Combined influence of alkaline earth metals and CO2 on performance of hierarchical zeolite Beta in n-hexane isomerization 碱土金属和CO2对分级沸石β正己烷异构化性能的影响

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Applied Petrochemical Research Pub Date : 2018-08-17 DOI: 10.1007/s13203-018-0208-7

Yogesh Shinde, Mousumi Chakraborty, Parimal A. Parikh

引用次数: 0

CO2 Adsorption by Several Types of Pillared Montmorillonite Clays 几种柱状蒙脱土对CO2的吸附研究

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Applied Petrochemical Research Pub Date : 2018-06-29 DOI: 10.1007/s13203-018-0206-9

Ke Wang, Xinlong Yan, Sridhar Komarneni

引用次数: 14

Study of dual-phase drive synchronization method and temperature measurement algorithm for measuring external surface temperatures of ethylene cracking furnace tubes 乙烯裂解炉管外表面温度测量的双相驱动同步方法及测温算法研究

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Applied Petrochemical Research Pub Date : 2018-06-28 DOI: 10.1007/s13203-018-0205-x

Zhiping Peng, Jieguang He, Yun Tan, Delong Cui, Qirui Li, Jingbo Qiu

{"title":"Study of dual-phase drive synchronization method and temperature measurement algorithm for measuring external surface temperatures of ethylene cracking furnace tubes","authors":"Zhiping Peng, Jieguang He, Yun Tan, Delong Cui, Qirui Li, Jingbo Qiu","doi":"10.1007/s13203-018-0205-x","DOIUrl":"https://doi.org/10.1007/s13203-018-0205-x","url":null,"abstract":"Currently, the manual method using hand-held infrared temperature measurement instruments for measuring temperatures on the external surfaces of ethylene cracking furnace tubes is highly subjective and is affected by a number of prominent issues, such as the high temperature working environments, which leads to low efficiency and poor measurement accuracy. Hence, an automatic temperature measurement system based on infrared light is designed and realized. In the system, a dual-phase drive synchronization method is proposed to rotate the thermodetector during horizontal movements, thus realizing automatic batch temperature measurements of the furnace tubes. Moreover, a temperature processing algorithm is developed to automatically identify furnace wall and tube surface temperatures, filter out abnormal temperatures and select only high-quality temperature measurements prior to calculating the final result. Real temperature measurement experiments demonstrated that the dual-phase drive temperature measurement system and temperature processing method are effective and efficient. Compared with the traditional manual way, temperatures obtained using the proposed system are more stable and accurate.","PeriodicalId":472,"journal":{"name":"Applied Petrochemical Research","volume":"8 3","pages":"163 - 172"},"PeriodicalIF":0.125,"publicationDate":"2018-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s13203-018-0205-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5087999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

New trends in improving gasoline quality and octane through naphtha isomerization: a short review 简述了通过石脑油异构化提高汽油质量和辛烷值的新趋势

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Applied Petrochemical Research Pub Date : 2018-06-27 DOI: 10.1007/s13203-018-0204-y

Salman Raza Naqvi, Ayesha Bibi, Muhammad Naqvi, Tayyaba Noor, Abdul-Sattar Nizami, Mohammad Rehan, Muhammad Ayoub

引用次数: 31

Two-step sol–gel synthesis of mesoporous aluminosilicates: highly efficient catalysts for the preparation of 3,5-dialkylpyridines 两步溶胶-凝胶合成介孔硅酸铝:制备3,5-二烷基吡啶的高效催化剂

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Applied Petrochemical Research Pub Date : 2018-06-26 DOI: 10.1007/s13203-018-0202-0

Marat R. Agliullin, Valentin P. Talzi, Nadezhda A. Filippova, Vera R. Bikbaeva, Sergey V. Bubennov, Tatyana R. Prosochkina, Nellya G. Grigorieva, Nama Narender, Boris I. Kutepov

引用次数: 7