Corning® Advanced-FlowTM glass reactors are continuous flow reactors with hydraulic diameter in t... more Corning® Advanced-FlowTM glass reactors are continuous flow reactors with hydraulic diameter in the range of millimetres. These devices make possible the switch of chemical reactions from batch mode to continuous processing through more efficient, more economical and safer processes. In addition, these reactors provide a platform for developing innovative chemistries that have never been considered industrially practical, either for hazard or yield reasons. Corning proprietary apparatuses are compact, adaptable and scalable, optimizing overall production cost and quality of high-value specialty, fine, and pharmaceutical chemicals. Corning Advanced-FlowTM glass reactors are composed of multiple inter-connected glass devices having different designs, offering the advantages of process intensification and glass-specific qualities like transparency and very good chemical resistance. This paper presents the comparison between experimental and CFD modelling results of a family of Corning ...
Development of novel glass microstructures for use in microreactors dedicated to production of ch... more Development of novel glass microstructures for use in microreactors dedicated to production of chemicals is presented. The performance of four of these microstructures is assessed for multi-phase flow applications. Mass transfer for non miscible liquids has been measured using the Schotten-Baumann reaction with significant improvement in conversion for one of the design over small lab batch vessel result. Also for non miscible liquids, precipitation of polystyrene nanoparticles showed a good control of particle size distribution in another design. Compliance to flow gel like solids with these designs is evaluated with a dedicated test where copper hydroxide is formed and flown through the microstructures. Finally, specific surface of one design is presented for gas-liquid mixtures. The reported designs have been implemented successfully in reactors in multi-phase flow applications.
Corning® Advanced-FlowTM glass reactors are continuous flow reactors with hydraulic diameters in ... more Corning® Advanced-FlowTM glass reactors are continuous flow reactors with hydraulic diameters in the millimetre range. These devices enable the switch of chemical reactions from batch mode to continuous processing through more efficient, more economical and safer processes. In addition, these reactors provide a platform for developing innovative chemistries that have never been considered industrially practical, either for hazard or yield reasons. Corning proprietary apparatuses are compact, adaptable and scalable, optimizing overall production cost and quality of high-value specialty, fine, and pharmaceutical chemicals. Corning Advanced-FlowTM glass reactors are composed of multiple inter-connected devices having different designs, offering the advantages of process intensification. This paper presents the comparison between experimental and CFD modelling results for the residence-time distribution of a family of glass devices. As the simulated residence-time distribution curves co...
Corning® Advanced-FlowTM reactors are continuous flow reactors with hydraulic diameters in the ra... more Corning® Advanced-FlowTM reactors are continuous flow reactors with hydraulic diameters in the range of 0.3 up to few millimetres. These devices make possible the switch of chemical reactions from batch mode to continuous processing through more efficient, more economical and safer processes. In addition, they provide a platform for developing innovative chemistries that have never been considered industrially practical, either for high exothermicity, hazard or yield reasons. Corning proprietary apparatuses are compact, adaptable and scalable, optimizing the overall production cost and quality of high-value specialty, fine, and pharmaceutical chemicals. This paper presents the mixing of immiscible liquids in fluidic modules devoted to low flow applications in laboratory studies. The degree of mixing is quantified through extraction efficiency measurements at organic/aqueous phase ratios of 0.25. The satisfactory high extraction efficiency, which was superior to 0.8, indicates Cornin...
The supercritical water oxidation (SCWO) process for diluted wastewater was modelled and simulate... more The supercritical water oxidation (SCWO) process for diluted wastewater was modelled and simulated using ASPEN Plus? of Aspen Technology Inc. Then, thermal integration analysis was searched, to use as much heat of oxidation as possible to preheat the raw materials. Afterward, a thorough energetic integration analysis was done, to search for self-sufficiency conditions. The results obtained considering a turbine using supercritical water detent show that the process is energetically self-sufficient for reaction temperatures above 600°C, 23 MPa pressure and oxygen in slight excess than the stoichiometric value. The usual performance parameters were computed and used to compare the efficiencies of each analysed case and choose the best solution.
Many efforts have been done over time to enhance the efficiency of automobiles, but an important ... more Many efforts have been done over time to enhance the efficiency of automobiles, but an important fraction (about 80 %) of the energy created by fuel combustion is still wasted through exhaust gas and to the coolant. Extracting useful heat from the waste carried by exhaust and converting it into electricity by using thermoelectric devices seems very attractive. This is true for both conventional cars as well as the more environmentally friendly ones, the electric-hybrid vehicles. A detailed 1-D model was developed to characterize the operation of a thermoelectric generator. The model allows sensitivity analysis of thermoelectric module performance with respect to geometry, electric and thermal contact resistances, as well as heat source and heat sink qualities (temperature and thermal conductance). Power density (power generated per kg TE materials) and power output per area are considered more appropriate as criteria of performance, instead of power output and efficiency. TE module ...
®Advanced-Flow™ Reactors are compact, adaptable and scalable, optimizing overall production cost ... more ®Advanced-Flow™ Reactors are compact, adaptable and scalable, optimizing overall production cost and quality of high-value specialty, fine, and pharmaceutical chemicals. Their gas-liquid flow and mass transfer characteristics were investigated for a G1 module. The flow patterns were visualised; bubbly or churn flow was observed, depending on the flow rates. The two-phase frictional pressure drop was satisfactorily predicted by the Lockhart-Martinelli equation, with a modified value of Chisholm’s factor. The mass transfer was studied using the absorption of CO2 in a 0.5 M buffer solution of NaHCO3/Na2CO3. The volumetric mass transfer coefficient increases with the increase of gas or liquid flow rates and has very good values, proving the mass transfer intensification characteristics of the Corning ® Advanced-Flow™ Reactors.
The task of finding the parameters of equations like Nu = a RebPrc (Pr/Prw)d by regression over a... more The task of finding the parameters of equations like Nu = a RebPrc (Pr/Prw)d by regression over an experimental set corresponding to a given heat exchanger, is difficult, without measuring the temperature on at least one side of the wall. There are two main problems: the implicit dependency on temperature of the bulk and near wall fluid and the impossibility of separating the cold and hot fluid partial heat transfer coefficients due to heat flow conservation. The classical way of zeroing the derivatives of a suitable objective function with respect to the parameters implies a multi-modal non-linear equation system, sensitive to the starting parameter vector. The new method starts with a given parameter vector and takes the ratio of hot over cold fluid partial heat transfer coefficient, separating them in this way. It then uses the total heat transfer equation to solve for each of them and the heat flow conservation equation to calculate the cold and hot side wall temperatures, retur...
Corning® Advanced-FlowTM glass reactors are continuous flow reactors with hydraulic diameter in t... more Corning® Advanced-FlowTM glass reactors are continuous flow reactors with hydraulic diameter in the range of millimetres. These devices make possible the switch of chemical reactions from batch mode to continuous processing through more efficient, more economical and safer processes. In addition, these reactors provide a platform for developing innovative chemistries that have never been considered industrially practical, either for hazard or yield reasons. Corning proprietary apparatuses are compact, adaptable and scalable, optimizing overall production cost and quality of high-value specialty, fine, and pharmaceutical chemicals. Corning Advanced-FlowTM glass reactors are composed of multiple inter-connected glass devices having different designs, offering the advantages of process intensification and glass-specific qualities like transparency and very good chemical resistance. This paper presents the comparison between experimental and CFD modelling results of a family of Corning ...
Development of novel glass microstructures for use in microreactors dedicated to production of ch... more Development of novel glass microstructures for use in microreactors dedicated to production of chemicals is presented. The performance of four of these microstructures is assessed for multi-phase flow applications. Mass transfer for non miscible liquids has been measured using the Schotten-Baumann reaction with significant improvement in conversion for one of the design over small lab batch vessel result. Also for non miscible liquids, precipitation of polystyrene nanoparticles showed a good control of particle size distribution in another design. Compliance to flow gel like solids with these designs is evaluated with a dedicated test where copper hydroxide is formed and flown through the microstructures. Finally, specific surface of one design is presented for gas-liquid mixtures. The reported designs have been implemented successfully in reactors in multi-phase flow applications.
Corning® Advanced-FlowTM glass reactors are continuous flow reactors with hydraulic diameters in ... more Corning® Advanced-FlowTM glass reactors are continuous flow reactors with hydraulic diameters in the millimetre range. These devices enable the switch of chemical reactions from batch mode to continuous processing through more efficient, more economical and safer processes. In addition, these reactors provide a platform for developing innovative chemistries that have never been considered industrially practical, either for hazard or yield reasons. Corning proprietary apparatuses are compact, adaptable and scalable, optimizing overall production cost and quality of high-value specialty, fine, and pharmaceutical chemicals. Corning Advanced-FlowTM glass reactors are composed of multiple inter-connected devices having different designs, offering the advantages of process intensification. This paper presents the comparison between experimental and CFD modelling results for the residence-time distribution of a family of glass devices. As the simulated residence-time distribution curves co...
Corning® Advanced-FlowTM reactors are continuous flow reactors with hydraulic diameters in the ra... more Corning® Advanced-FlowTM reactors are continuous flow reactors with hydraulic diameters in the range of 0.3 up to few millimetres. These devices make possible the switch of chemical reactions from batch mode to continuous processing through more efficient, more economical and safer processes. In addition, they provide a platform for developing innovative chemistries that have never been considered industrially practical, either for high exothermicity, hazard or yield reasons. Corning proprietary apparatuses are compact, adaptable and scalable, optimizing the overall production cost and quality of high-value specialty, fine, and pharmaceutical chemicals. This paper presents the mixing of immiscible liquids in fluidic modules devoted to low flow applications in laboratory studies. The degree of mixing is quantified through extraction efficiency measurements at organic/aqueous phase ratios of 0.25. The satisfactory high extraction efficiency, which was superior to 0.8, indicates Cornin...
The supercritical water oxidation (SCWO) process for diluted wastewater was modelled and simulate... more The supercritical water oxidation (SCWO) process for diluted wastewater was modelled and simulated using ASPEN Plus? of Aspen Technology Inc. Then, thermal integration analysis was searched, to use as much heat of oxidation as possible to preheat the raw materials. Afterward, a thorough energetic integration analysis was done, to search for self-sufficiency conditions. The results obtained considering a turbine using supercritical water detent show that the process is energetically self-sufficient for reaction temperatures above 600°C, 23 MPa pressure and oxygen in slight excess than the stoichiometric value. The usual performance parameters were computed and used to compare the efficiencies of each analysed case and choose the best solution.
Many efforts have been done over time to enhance the efficiency of automobiles, but an important ... more Many efforts have been done over time to enhance the efficiency of automobiles, but an important fraction (about 80 %) of the energy created by fuel combustion is still wasted through exhaust gas and to the coolant. Extracting useful heat from the waste carried by exhaust and converting it into electricity by using thermoelectric devices seems very attractive. This is true for both conventional cars as well as the more environmentally friendly ones, the electric-hybrid vehicles. A detailed 1-D model was developed to characterize the operation of a thermoelectric generator. The model allows sensitivity analysis of thermoelectric module performance with respect to geometry, electric and thermal contact resistances, as well as heat source and heat sink qualities (temperature and thermal conductance). Power density (power generated per kg TE materials) and power output per area are considered more appropriate as criteria of performance, instead of power output and efficiency. TE module ...
®Advanced-Flow™ Reactors are compact, adaptable and scalable, optimizing overall production cost ... more ®Advanced-Flow™ Reactors are compact, adaptable and scalable, optimizing overall production cost and quality of high-value specialty, fine, and pharmaceutical chemicals. Their gas-liquid flow and mass transfer characteristics were investigated for a G1 module. The flow patterns were visualised; bubbly or churn flow was observed, depending on the flow rates. The two-phase frictional pressure drop was satisfactorily predicted by the Lockhart-Martinelli equation, with a modified value of Chisholm’s factor. The mass transfer was studied using the absorption of CO2 in a 0.5 M buffer solution of NaHCO3/Na2CO3. The volumetric mass transfer coefficient increases with the increase of gas or liquid flow rates and has very good values, proving the mass transfer intensification characteristics of the Corning ® Advanced-Flow™ Reactors.
The task of finding the parameters of equations like Nu = a RebPrc (Pr/Prw)d by regression over a... more The task of finding the parameters of equations like Nu = a RebPrc (Pr/Prw)d by regression over an experimental set corresponding to a given heat exchanger, is difficult, without measuring the temperature on at least one side of the wall. There are two main problems: the implicit dependency on temperature of the bulk and near wall fluid and the impossibility of separating the cold and hot fluid partial heat transfer coefficients due to heat flow conservation. The classical way of zeroing the derivatives of a suitable objective function with respect to the parameters implies a multi-modal non-linear equation system, sensitive to the starting parameter vector. The new method starts with a given parameter vector and takes the ratio of hot over cold fluid partial heat transfer coefficient, separating them in this way. It then uses the total heat transfer equation to solve for each of them and the heat flow conservation equation to calculate the cold and hot side wall temperatures, retur...
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