Pub Date : 2019-08-29DOI: 10.26480/jmerd.05.2019.01.05
Dang H. Anh
In recent years, all countries in the world are very interested in the effects of pollutants affecting human health, the living environment in general and especially pollution of water sources and oceans on the earth's surface. The cause of this pollution is largely due to human use of chemicals and fuels from many different sources, especially oil. The exploitation and transportation of crude oil are increasing according to the common development of humanity. Since people discovered and exploited oil, the oil spill at sea began to appear. Since ancient times, oil spills on the sea have been a threat to the marine environment in general, coastal ecosystems in particular and damage to economic activities. It is the concern of all humanity. Every year, we still have to witness many accidents from tankers making millions of tons of oil spilled into the sea, causing great consequences for the natural resources and environment on the earth. In order to overcome the oil spills on the sea, people have also found a way to deal with them, and many processing methods were created to overcome the above problems such as mechanical methods, chemical methods, biological methods. The application of scientific and technological advances in information technology and biotechnology have been creating breakthroughs in forecasting and controlling oil spills at sea. The paper focuses on an overview of pollution problems from ships, especially oil pollution from tankers and the consequences of oil pollution on the marine environment. Moreover, the authors learn and evaluate some specific advanced technology solutions to prevent oil pollution from ships, effective feasible solutions that need to be applied in practice.
{"title":"THE BREAKTHROUGH TECHNOLOGY SOLUTIONS FOR CONTROL AND TREATMENT OIL SPILL ON THE SEA: A SHORT REVIEW","authors":"Dang H. Anh","doi":"10.26480/jmerd.05.2019.01.05","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.01.05","url":null,"abstract":"In recent years, all countries in the world are very interested in the effects of pollutants affecting human health, the living environment in general and especially pollution of water sources and oceans on the earth's surface. The cause of this pollution is largely due to human use of chemicals and fuels from many different sources, especially oil. The exploitation and transportation of crude oil are increasing according to the common development of humanity. Since people discovered and exploited oil, the oil spill at sea began to appear. Since ancient times, oil spills on the sea have been a threat to the marine environment in general, coastal ecosystems in particular and damage to economic activities. It is the concern of all humanity. Every year, we still have to witness many accidents from tankers making millions of tons of oil spilled into the sea, causing great consequences for the natural resources and environment on the earth. In order to overcome the oil spills on the sea, people have also found a way to deal with them, and many processing methods were created to overcome the above problems such as mechanical methods, chemical methods, biological methods. The application of scientific and technological advances in information technology and biotechnology have been creating breakthroughs in forecasting and controlling oil spills at sea. The paper focuses on an overview of pollution problems from ships, especially oil pollution from tankers and the consequences of oil pollution on the marine environment. Moreover, the authors learn and evaluate some specific advanced technology solutions to prevent oil pollution from ships, effective feasible solutions that need to be applied in practice.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77213807","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}
Pub Date : 2019-08-29DOI: 10.26480/jmerd.05.2019.106.109
Agung Kristanto, M. S. Neubert, S. Promkotra, W. Sessomboon
Polyhydroxybutyrate-co-hydroxyvalerate (PHBV, P) and natural latex (L) are mixed together to improve biostructures due to very stiff PHBV and high resilient natural latex. Another raw material added in PHBV/L mixtures is a vegetable oil which is vary between virgin coconut oil (VC) and cooking coconut oil (CC). Then, the three mixtures are known for P-L-C biocomposites. These three different components among PHBV, natural latex, and the coconut oil are considered to obtain their proper mechanical properties. The 2% and 3% (w/v) of PHBV concentrations (2P, 3P) in chloroform are started as the main component, and mixed to natural latex (L) and coconut oil (VC or CC) as the blended films in the ratio of 12:8:1, 10:10:1, 8:12:1, and compared to 6:4:1, 5:5:1, 4:6:1, respectively. The blends are specified the thermal property by the differential scanning calorimetry and also distinguished with their crystallinity. Besides, they are also characterized the tensile strength by universal testing machine. The degree of crystallinity is inversely proportional to the melting temperature particularly for 3Px-Lx-C1. The 3% w/v of PHBV-Latex-Coconut oil blends presents higher melting temperature than the 2% w/v of PHBV-Latex-Coconut oil mixtures. Adding coconut oil mixes show a lower melting temperature at 166-167oC when is compared to the mixture without coconut oil at 168-169oC. The virgin coconut oil mixes specify no inconsistency of the melting temperature, enthalpy, and degree of crystallinity. The addition of the coconut oil can diminish the 50% of tensile strength and the 6-7% of tensile modulus. The cooking coconut oil added in the 2% w/v PHBV-Latex matrix affects a 10% increase in tensile modulus related to the 3% w/v PHBV-Latex matrix. The appearance of the coconut oil in the blend is suitable for conformity of plastic deformation.
{"title":"FABRICATION AND THERMO-MECHANICAL CHARACTERISTICS OF PHBV/LATEX/VEGETABLE OIL COMPOSITES-MODIFYING ON BIOCOMPOSITES","authors":"Agung Kristanto, M. S. Neubert, S. Promkotra, W. Sessomboon","doi":"10.26480/jmerd.05.2019.106.109","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.106.109","url":null,"abstract":"Polyhydroxybutyrate-co-hydroxyvalerate (PHBV, P) and natural latex (L) are mixed together to improve biostructures due to very stiff PHBV and high resilient natural latex. Another raw material added in PHBV/L mixtures is a vegetable oil which is vary between virgin coconut oil (VC) and cooking coconut oil (CC). Then, the three mixtures are known for P-L-C biocomposites. These three different components among PHBV, natural latex, and the coconut oil are considered to obtain their proper mechanical properties. The 2% and 3% (w/v) of PHBV concentrations (2P, 3P) in chloroform are started as the main component, and mixed to natural latex (L) and coconut oil (VC or CC) as the blended films in the ratio of 12:8:1, 10:10:1, 8:12:1, and compared to 6:4:1, 5:5:1, 4:6:1, respectively. The blends are specified the thermal property by the differential scanning calorimetry and also distinguished with their crystallinity. Besides, they are also characterized the tensile strength by universal testing machine. The degree of crystallinity is inversely proportional to the melting temperature particularly for 3Px-Lx-C1. The 3% w/v of PHBV-Latex-Coconut oil blends presents higher melting temperature than the 2% w/v of PHBV-Latex-Coconut oil mixtures. Adding coconut oil mixes show a lower melting temperature at 166-167oC when is compared to the mixture without coconut oil at 168-169oC. The virgin coconut oil mixes specify no inconsistency of the melting temperature, enthalpy, and degree of crystallinity. The addition of the coconut oil can diminish the 50% of tensile strength and the 6-7% of tensile modulus. The cooking coconut oil added in the 2% w/v PHBV-Latex matrix affects a 10% increase in tensile modulus related to the 3% w/v PHBV-Latex matrix. The appearance of the coconut oil in the blend is suitable for conformity of plastic deformation.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80297770","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}
Pub Date : 2019-08-29DOI: 10.26480/jmerd.05.2019.83.88
V.G.S. Abhirag
Earth Air Heat Exchanger (EAHE) exploits the earth’s ground temperature to its maximum potential so as to carry out the heat transfer. This paper mainly focuses on the methods that are being used to improve the thermal efficiency of the EAHE, during its course of operation. Studies conducted by various researchers in the field of EAHE, regarding the method and modification done on the EAHE so as to improve its performance of heat exchange has been discussed in this paper. The paper also deals with the design aspects and parameters affecting the performance of the EAHE, which help in dealing with its installation and implementation.
{"title":"A REVIEW ON PERFOMANCE ENHANCEMENT OF EARTH AIR HEAT EXCHANGER","authors":"V.G.S. Abhirag","doi":"10.26480/jmerd.05.2019.83.88","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.83.88","url":null,"abstract":"Earth Air Heat Exchanger (EAHE) exploits the earth’s ground temperature to its maximum potential so as to carry out the heat transfer. This paper mainly focuses on the methods that are being used to improve the thermal efficiency of the EAHE, during its course of operation. Studies conducted by various researchers in the field of EAHE, regarding the method and modification done on the EAHE so as to improve its performance of heat exchange has been discussed in this paper. The paper also deals with the design aspects and parameters affecting the performance of the EAHE, which help in dealing with its installation and implementation.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88294040","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}
Pub Date : 2019-08-29DOI: 10.26480/jmerd.05.2019.132.137
A. Mustafa, Wafaa M. Taha, A. Seadawy
In this essay, we offer the standard and improved expansion method to seek right solutions of nonlinear fractional differential equation (2+1)-dimensional Ablow Kaup-Newell_Segur (AKNS) with the fractional complex transform. The fractional derivative is defined in the sense of modified Riemann-Liouville derivative. The solutions of this equation are acquired through of the hyperbolic, trigonometrical and rational functions. It has been shown the expansion method award several novel results which are effectual and easy to calculate by the assist of a symbolic computation system.
本文给出了用分数阶复变换求非线性分数阶微分方程(2+1)维Ablow kap - newell_segur (AKNS)的正确解的标准和改进的展开方法。分数阶导数是在修正黎曼-刘维尔导数意义上定义的。通过双曲函数、三角函数和有理函数的变换，得到了方程的解。结果表明，在符号计算系统的辅助下，展开式方法获得了一些新颖的结果，既有效又易于计算。
{"title":"NEW SOLITON SOLUTIONS OF NONLINEAR SPACE-TIME FRACTIONAL (2+1)- DIMENSIONAL ABLOW KAUP-NEWELL_SEGUR (AKNS) EQUATION BY STANDARD AND IMPROVED (G'/G) -EXPANSION METHOD","authors":"A. Mustafa, Wafaa M. Taha, A. Seadawy","doi":"10.26480/jmerd.05.2019.132.137","DOIUrl":"https://doi.org/10.26480/jmerd.05.2019.132.137","url":null,"abstract":"In this essay, we offer the standard and improved expansion method to seek right solutions of nonlinear fractional differential equation (2+1)-dimensional Ablow Kaup-Newell_Segur (AKNS) with the fractional complex transform. The fractional derivative is defined in the sense of modified Riemann-Liouville derivative. The solutions of this equation are acquired through of the hyperbolic, trigonometrical and rational functions. It has been shown the expansion method award several novel results which are effectual and easy to calculate by the assist of a symbolic computation system.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89429077","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}
S. Vignesh, M. Arjunan, G. Deepan, T. Diwakar, P. Elumalai
Toxic gases include NOX, CO, HC and Smoke which are harmful to the atmosphere as well as to the human beings. The main aim of this work is to fabricate system, where the level of intensity of toxic gases is controlled through chemical reaction to more agreeable level. This system acts itself as an exhaust system; hence there is no needs to fit separate the silencer. The whole assembly is fitted in the exhaust pipe from engine. In this work, catalytic converter with copper oxide as a catalyst, by replacing noble catalysts such as platinum, palladium and rhodium is fabricated and fitted in the engine exhaust. With and without catalytic converter, the experimentations are carried out at different loads such as 0%, 25%, 50%, 75%, and 100% of maximum rated load. From the experimental results it is found that the maximum reduction is 32%,61% and 21% for HC, Nox and CO respectively at 100% of maximum rated load when compared to that of without catalytic converter. This catalytic converter system is cash effective and more economical than the existing catalytic converter.
{"title":"Modification of Exhaust Using Low Precious Metals for Two Wheelers","authors":"S. Vignesh, M. Arjunan, G. Deepan, T. Diwakar, P. Elumalai","doi":"10.5539/MER.V9N1P30","DOIUrl":"https://doi.org/10.5539/MER.V9N1P30","url":null,"abstract":"Toxic gases include NOX, CO, HC and Smoke which are harmful to the atmosphere as well as to the human beings. The main aim of this work is to fabricate system, where the level of intensity of toxic gases is controlled through chemical reaction to more agreeable level. This system acts itself as an exhaust system; hence there is no needs to fit separate the silencer. The whole assembly is fitted in the exhaust pipe from engine. In this work, catalytic converter with copper oxide as a catalyst, by replacing noble catalysts such as platinum, palladium and rhodium is fabricated and fitted in the engine exhaust. With and without catalytic converter, the experimentations are carried out at different loads such as 0%, 25%, 50%, 75%, and 100% of maximum rated load. From the experimental results it is found that the maximum reduction is 32%,61% and 21% for HC, Nox and CO respectively at 100% of maximum rated load when compared to that of without catalytic converter. This catalytic converter system is cash effective and more economical than the existing catalytic converter.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79767445","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}
Design of Electro-Mechanical Underwater Vehicle Engine: An Efficient No-fuel Consuming Substitute for Marine Diesel and Nuclear Engine
机电水下航行器发动机的设计:船用柴油机和核动力发动机的高效无燃料替代品
{"title":"Design of Electro-Mechanical Underwater Vehicle Engine: An Efficient No-fuel Consuming Substitute for Marine Diesel and Nuclear Engine","authors":"Samarpan Deb Majumder","doi":"10.5539/MER.V9N1P11","DOIUrl":"https://doi.org/10.5539/MER.V9N1P11","url":null,"abstract":"Design of Electro-Mechanical Underwater Vehicle Engine: An Efficient No-fuel Consuming Substitute for Marine Diesel and Nuclear Engine","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85112753","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}
Summary Modernization of control system of Horizontal hydraulic press of model 2240D with the usage of programmable logical controller, namely intellectual relay Zelio Logic is considered. The consequence of technological operations fulfillment such as pressing, non-formal control algorithm, choice motivation of PLC model SR3B261B, control program fragment in the FBD language is given.
{"title":"Zelio Logic Control System for Horizontal Hydraulic Press","authors":"Sumit Patil, A. Muthuraja","doi":"10.5539/MER.V9N1P26","DOIUrl":"https://doi.org/10.5539/MER.V9N1P26","url":null,"abstract":"Summary Modernization of control system of Horizontal hydraulic press of model 2240D with the usage of programmable logical controller, namely intellectual relay Zelio Logic is considered. The consequence of technological operations fulfillment such as pressing, non-formal control algorithm, choice motivation of PLC model SR3B261B, control program fragment in the FBD language is given.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87200918","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}
A fundamental understanding of the mechanism of material interaction with a medium is based on correspondence between experimental studies and actual operating conditions of a given model or a structure. We estimated performance of thermal shield structures based on computations brought about considering physical properties of materials obtained under conditions simulating re-entry of a spacecraft into the atmosphere.A thermal shield is considered of a layered type shell, made of fiber glass with phenol-phormaldehide matrix. Both elastic and thermo-physical characteristics are varied depending on the temperature change.A thermal-stressed state of a cylindrical shield subjected to action of a high-temperature gas flow, is defined based on solving a 3D problem simultaneously using equations of theory of elasticity, thermal conductivity, and numerical analysis. Results are given as dependencies of stress distributions through the thermal coating, taking into account such parameters of atmosphere in re-entry as temperature, heating rate, pressure of a gaseous medium.
{"title":"Predicting performance of a thermal shield of a spacecraft in a high-temperature gas flow","authors":"L. I. Gracheva","doi":"10.30564/JMER.V2I1.763","DOIUrl":"https://doi.org/10.30564/JMER.V2I1.763","url":null,"abstract":"A fundamental understanding of the mechanism of material interaction with a medium is based on correspondence between experimental studies and actual operating conditions of a given model or a structure. We estimated performance of thermal shield structures based on computations brought about considering physical properties of materials obtained under conditions simulating re-entry of a spacecraft into the atmosphere.A thermal shield is considered of a layered type shell, made of fiber glass with phenol-phormaldehide matrix. Both elastic and thermo-physical characteristics are varied depending on the temperature change.A thermal-stressed state of a cylindrical shield subjected to action of a high-temperature gas flow, is defined based on solving a 3D problem simultaneously using equations of theory of elasticity, thermal conductivity, and numerical analysis. Results are given as dependencies of stress distributions through the thermal coating, taking into account such parameters of atmosphere in re-entry as temperature, heating rate, pressure of a gaseous medium.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88764353","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}
Heating swimming pools in an efficient and ecological way has become mandatory for the protection of the environment, but also for technological development and energy saving. The heating must maintain the quality of bathing water, avoiding temperature variations between the different depths and locations of the pool. There are currently several types of heating systems for swimming pool water among which we can mention; heat pumps, gas heating and electrical resistance, etc. All of these systems are very expensive and voracious in energy consumption. However, solar thermal heaters can be a good solution because they are inexpensive and environmentally friendly. The purpose of this work is to use the COMSOL MultiPhysics software to model the distribution of the flow field velocity and the temperature distribution according to the design of the pool and the inflow and outflow of water and climatic conditions in the province of Nador, in northeastern Morocco.
{"title":"Modeling of flow field and heat transfer in a swimming pool","authors":"A. Doudou","doi":"10.30564/JMER.V2I1.508","DOIUrl":"https://doi.org/10.30564/JMER.V2I1.508","url":null,"abstract":"Heating swimming pools in an efficient and ecological way has become mandatory for the protection of the environment, but also for technological development and energy saving. The heating must maintain the quality of bathing water, avoiding temperature variations between the different depths and locations of the pool. There are currently several types of heating systems for swimming pool water among which we can mention; heat pumps, gas heating and electrical resistance, etc. All of these systems are very expensive and voracious in energy consumption. However, solar thermal heaters can be a good solution because they are inexpensive and environmentally friendly. The purpose of this work is to use the COMSOL MultiPhysics software to model the distribution of the flow field velocity and the temperature distribution according to the design of the pool and the inflow and outflow of water and climatic conditions in the province of Nador, in northeastern Morocco.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88520951","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}
In the present work, the deactivation by sintering of cobalt-based catalyst during Fischer-Tropsch synthesis at low temperature was studied by numerical simulation. For this purpose, a mathematical model was developed. The obtained simulation results allowed us to highlight and improve the understanding of the deactivation phenomena of cobalt-based Fischer-Tropsch catalysts by sintering. The main results also show that the sintering phenomenon is strongly dependent on the operating conditions, in particular, the temperature, the pressure, and the H2/CO molar ratio, as well as the reaction by-products such as water. The results obtained can, therefore, be used to understand more the sintering mechanism which may be linked to the change in the concentration of the active sites and the reaction rates.
{"title":"Deactivation by sintering of the cobalt catalyst during the Fischer-Tropsch reaction","authors":"Dounia Alihellal, Lemnouer Chibane, M. Slimani","doi":"10.30564/JMER.V2I1.277","DOIUrl":"https://doi.org/10.30564/JMER.V2I1.277","url":null,"abstract":"In the present work, the deactivation by sintering of cobalt-based catalyst during Fischer-Tropsch synthesis at low temperature was studied by numerical simulation. For this purpose, a mathematical model was developed. The obtained simulation results allowed us to highlight and improve the understanding of the deactivation phenomena of cobalt-based Fischer-Tropsch catalysts by sintering. The main results also show that the sintering phenomenon is strongly dependent on the operating conditions, in particular, the temperature, the pressure, and the H2/CO molar ratio, as well as the reaction by-products such as water. The results obtained can, therefore, be used to understand more the sintering mechanism which may be linked to the change in the concentration of the active sites and the reaction rates.","PeriodicalId":16153,"journal":{"name":"Journal of Mechanical Engineering Research and Developments","volume":"205 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80347030","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}
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