The Experts below are selected from a list of 60 Experts worldwide ranked by ideXlab platform
Reinhard Schomacker - One of the best experts on this subject based on the ideXlab platform.
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drop size analysis in a two phase reactive liquid liquid system on a Bubble Cap Tray
Industrial & Engineering Chemistry Research, 2005Co-Authors: Devender S Negi, Alexander Rochlitz, Gunter Wozny, Reinhard SchomackerAbstract:In the present work, the drop-size distribution is investigated in a reactive liquid−liquid system on a Bubble-Cap Tray. The transesterification reaction between glycerol and methyl oleate is taken...
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Drop-Size Analysis in a Two-Phase Reactive Liquid−Liquid System on a Bubble-Cap Tray
Industrial & Engineering Chemistry Research, 2005Co-Authors: Devender S Negi, Alexander Rochlitz, Gunter Wozny, Reinhard SchomackerAbstract:In the present work, the drop-size distribution is investigated in a reactive liquid-liquid system on a Bubble-Cap Tray. The transesterification reaction between glycerol and methyl oleate is taken as a case of the two-phase liquid-liquid reaction. A microphotographic technique was used to photograph the drops directly in the liquid-liquid dispersion. The drop-size distribution is studied with and without reaction at different gas flow rates with a high dispersed-phase fraction. The drop-size distribution is fitted by normal and log-normal distributions. A weak dependency of the gas velocity on the Sauter mean diameter is found for the nonre-acting system (d 32 G -0.17 ). No significant effect of the gas velocity could be seen for the reacting system.
Devender S Negi - One of the best experts on this subject based on the ideXlab platform.
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drop size analysis in a two phase reactive liquid liquid system on a Bubble Cap Tray
Industrial & Engineering Chemistry Research, 2005Co-Authors: Devender S Negi, Alexander Rochlitz, Gunter Wozny, Reinhard SchomackerAbstract:In the present work, the drop-size distribution is investigated in a reactive liquid−liquid system on a Bubble-Cap Tray. The transesterification reaction between glycerol and methyl oleate is taken...
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Drop-Size Analysis in a Two-Phase Reactive Liquid−Liquid System on a Bubble-Cap Tray
Industrial & Engineering Chemistry Research, 2005Co-Authors: Devender S Negi, Alexander Rochlitz, Gunter Wozny, Reinhard SchomackerAbstract:In the present work, the drop-size distribution is investigated in a reactive liquid-liquid system on a Bubble-Cap Tray. The transesterification reaction between glycerol and methyl oleate is taken as a case of the two-phase liquid-liquid reaction. A microphotographic technique was used to photograph the drops directly in the liquid-liquid dispersion. The drop-size distribution is studied with and without reaction at different gas flow rates with a high dispersed-phase fraction. The drop-size distribution is fitted by normal and log-normal distributions. A weak dependency of the gas velocity on the Sauter mean diameter is found for the nonre-acting system (d 32 G -0.17 ). No significant effect of the gas velocity could be seen for the reacting system.
Gunter Wozny - One of the best experts on this subject based on the ideXlab platform.
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drop size analysis in a two phase reactive liquid liquid system on a Bubble Cap Tray
Industrial & Engineering Chemistry Research, 2005Co-Authors: Devender S Negi, Alexander Rochlitz, Gunter Wozny, Reinhard SchomackerAbstract:In the present work, the drop-size distribution is investigated in a reactive liquid−liquid system on a Bubble-Cap Tray. The transesterification reaction between glycerol and methyl oleate is taken...
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Drop-Size Analysis in a Two-Phase Reactive Liquid−Liquid System on a Bubble-Cap Tray
Industrial & Engineering Chemistry Research, 2005Co-Authors: Devender S Negi, Alexander Rochlitz, Gunter Wozny, Reinhard SchomackerAbstract:In the present work, the drop-size distribution is investigated in a reactive liquid-liquid system on a Bubble-Cap Tray. The transesterification reaction between glycerol and methyl oleate is taken as a case of the two-phase liquid-liquid reaction. A microphotographic technique was used to photograph the drops directly in the liquid-liquid dispersion. The drop-size distribution is studied with and without reaction at different gas flow rates with a high dispersed-phase fraction. The drop-size distribution is fitted by normal and log-normal distributions. A weak dependency of the gas velocity on the Sauter mean diameter is found for the nonre-acting system (d 32 G -0.17 ). No significant effect of the gas velocity could be seen for the reacting system.
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A startup model for simulation of batch distillation starting from a cold state
Computers & Chemical Engineering, 2003Co-Authors: Lin Wang, Gunter Wozny, Pu Li, Shuqing WangAbstract:Abstract Batch distillation columns are frequently started up with a different initial reboiler charge. A proper initial state is required for simulation and optimization of such processes, but it has been a non-trivial task to obtain it. In this work, a model to express startup behaviors of batch columns starting from an empty cold state is proposed to address this issue. Each Tray is described beginning with a non-equilibrium phase in which only mass and energy transfer is taking place, to an equilibrium phase in which the vapor–liquid equilibrium is being held. The switching point between these two phases is determined by the Bubble-point temperature at the operating pressure. The equilibrium state is reached Tray by Tray from bottom to top of the column, while the liquid holdup on the Trays is mainly filled in the opposite direction. A difficulty in solving the model equations is that the number of variables of the Trays is not the same when their state switches from a phase to another. Trivial equations are introduced to deal with this problem. g proms is used as the simulation platform. The startup of a three-component batch distillation column is simulated with this model and the results are compared with those from an equilibrium model. The model proposed is verified through experiment on a pilot batch plant with a Bubble-Cap Tray column to separate a methanol–water mixture.
Alexander Rochlitz - One of the best experts on this subject based on the ideXlab platform.
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drop size analysis in a two phase reactive liquid liquid system on a Bubble Cap Tray
Industrial & Engineering Chemistry Research, 2005Co-Authors: Devender S Negi, Alexander Rochlitz, Gunter Wozny, Reinhard SchomackerAbstract:In the present work, the drop-size distribution is investigated in a reactive liquid−liquid system on a Bubble-Cap Tray. The transesterification reaction between glycerol and methyl oleate is taken...
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Drop-Size Analysis in a Two-Phase Reactive Liquid−Liquid System on a Bubble-Cap Tray
Industrial & Engineering Chemistry Research, 2005Co-Authors: Devender S Negi, Alexander Rochlitz, Gunter Wozny, Reinhard SchomackerAbstract:In the present work, the drop-size distribution is investigated in a reactive liquid-liquid system on a Bubble-Cap Tray. The transesterification reaction between glycerol and methyl oleate is taken as a case of the two-phase liquid-liquid reaction. A microphotographic technique was used to photograph the drops directly in the liquid-liquid dispersion. The drop-size distribution is studied with and without reaction at different gas flow rates with a high dispersed-phase fraction. The drop-size distribution is fitted by normal and log-normal distributions. A weak dependency of the gas velocity on the Sauter mean diameter is found for the nonre-acting system (d 32 G -0.17 ). No significant effect of the gas velocity could be seen for the reacting system.
Pearl Subramanian - One of the best experts on this subject based on the ideXlab platform.
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Design and development of Bubble-Cap Tray column for continuous transesterification plant in coconut-oil-based biodiesel production
Indian Journal of Agricultural Sciences, 2016Co-Authors: P. Gnanaselvi, Pearl SubramanianAbstract:A study was carried out on production of biodiesel from coconut oil using alkali catalyzed transesterification process by two different reactive distillation columns, viz. sieve Tray and Bubble-Cap Tray column. Coconut oil with free fatty acid content of 1.2% was used for transesterification. In laboratory scale batch system, among all the variations adopted, it was found that maximum methyl esters yield of 97.7% was obtained with 6:1 molar ratio of methanol-to-oil, 1% NaOH at 60 degrees C reaction temperature. A continuous flow transesterification using sieve Tray reactive distillation column yielded 93.75% methyl ester with 5.55 min average reaction time at 65 degrees C under 4:1 molar ratio (methanol-to-oil). The excess alcohol was found to be 11.4 ml. Based on performance evaluation of sieve Tray reactive distillation column, a new Bubble-Cap Tray reactive distillation column was designed and developed for continuous biodiesel production. Maximum methyl ester yield was 96.2% with 5.55 min average reaction time at 65 degrees C under 4:1 molar ratio. Excess alcohol was found to be 17.1 ml. Daily average electricity consumption was found to be 13.6 kWh for continuous transesterification biodiesel production and processing cost was worked out as (sic)26.03. Regression analysis was employed to evaluate the effects of molar ratio and temperature on the yield of methyl esters. The R-2 value was 0.87 for sieve Tray reactive distillation column and 0.92 for Bubble-Cap reactive distillation column which confirmed the validity of the predicted model. Based on the findings from the study, it was found out that continuous transesterification was more feasible and efficient way for production of biodiesel. It was concluded that Bubble-Cap Tray reactive distillation column was found to be an effective than sieve Tray column due to its increased yield (1 time), excess alcohol recovery (1.5 times) and better fuel properties.
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design and development of Bubble Cap Tray column for continuous transesterification plant in coconut oil based biodiesel production
Indian Journal of Agricultural Sciences, 2016Co-Authors: P. Gnanaselvi, Pearl SubramanianAbstract:A study was carried out on production of biodiesel from coconut oil using alkali catalyzed transesterification process by two different reactive distillation columns, viz. sieve Tray and Bubble-Cap Tray column. Coconut oil with free fatty acid content of 1.2% was used for transesterification. In laboratory scale batch system, among all the variations adopted, it was found that maximum methyl esters yield of 97.7% was obtained with 6:1 molar ratio of methanol-to-oil, 1% NaOH at 60oC reaction temperature. A continuous flow transesterification using sieve Tray reactive distillation column yielded 93.75% methyl ester with 5.55 min average reaction time at 65oC under 4:1 molar ratio (methanol-to-oil). The excess alcohol was found to be 11.4 ml. Based on performance evaluation of sieve Tray reactive distillation column, a new Bubble-Cap Tray reactive distillation column was designed and developed for continuous biodiesel production. Maximum methyl ester yield was 96.2% with 5.55 min average reaction time at 65oC under 4:1 molar ratio. Excess alcohol was found to be 17.1 ml. Daily average electricity consumption was found to be 13.6 kWh for continuous transesterification biodiesel production and processing cost was worked out as Rupees 26.03. Regression analysis was employed to evaluate the effects of molar ratio and temperature on the yield of methyl esters. The R2 value was 0.87 for sieve Tray reactive distillation column and 0.92 for Bubble-Cap reactive distillation column which confirmed the validity of the predicted model. Based on the findings from the study, it was found out that continuous transesterification was more feasible and efficient way for production of biodiesel. It was concluded that Bubble-Cap Tray reactive distillation column was found to be an effective than sieve Tray column due to its increased yield (1 time), excess alcohol recovery (1.5 times) and better fuel properties.
