The Experts below are selected from a list of 30 Experts worldwide ranked by ideXlab platform
Jun Gao - One of the best experts on this subject based on the ideXlab platform.
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Computer-Aided Screening of Ionic Liquids As Entrainers for Separating Methyl Acetate and Methanol via Extractive Distillation
Industrial & Engineering Chemistry Research, 2018Co-Authors: Zhaoyou Zhu, Xueli Geng, Chao Chen, Yinglong Wang, Jun GaoAbstract:In the production of poly(vinyl alcohol), the raw materials methyl acetate (MeOAc) and methanol (MeOH) exist as a Homogeneous Azeotropic Mixture. Twenty-five kinds of ionic liquids, composed of five types of cations and five types of anions, were studied using the COSMO-SAC method. The σ-profile data for each component and the selectivity at infinite dilution (S∞) were calculated and analyzed, respectively. 1-Hexyl-3-methylimidazolium chloride ([HMIM][Cl]) and 1-butyl-3-methylimidazolium chloride ([BMIM][Cl]) were selected as suitable entrainers based on the COSMO-SAC method. The binary interaction parameters of the NRTL model of the MeOAc/ionic liquid and MeOH/ionic liquid systems were regressed. The conceptual design for the separation of MeOAc and MeOH using ionic liquids as entrainers was investigated. The comparison of two processes using two entrainers was carried out from an economic perspective. The total annual cost (TAC) of the process using [HMIM][Cl] as an entrainer can be reduced by 16.5% com...
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Computer-Aided Screening of Ionic Liquids As Entrainers for Separating Methyl Acetate and Methanol via Extractive Distillation
2018Co-Authors: Zhaoyou Zhu, Xueli Geng, Chao Chen, Yinglong Wang, Jun GaoAbstract:In the production of poly(vinyl alcohol), the raw materials methyl acetate (MeOAc) and methanol (MeOH) exist as a Homogeneous Azeotropic Mixture. Twenty-five kinds of ionic liquids, composed of five types of cations and five types of anions, were studied using the COSMO-SAC method. The σ-profile data for each component and the selectivity at infinite dilution (S∞) were calculated and analyzed, respectively. 1-Hexyl-3-methylimidazolium chloride ([HMIM][Cl]) and 1-butyl-3-methylimidazolium chloride ([BMIM][Cl]) were selected as suitable entrainers based on the COSMO-SAC method. The binary interaction parameters of the NRTL model of the MeOAc/ionic liquid and MeOH/ionic liquid systems were regressed. The conceptual design for the separation of MeOAc and MeOH using ionic liquids as entrainers was investigated. The comparison of two processes using two entrainers was carried out from an economic perspective. The total annual cost (TAC) of the process using [HMIM][Cl] as an entrainer can be reduced by 16.5% compared with that of the process using [BMIM][Cl]. The results indicated that the COSMO-SAC method is feasible for screening ionic liquids as optimal entrainers. This work could provide theoretical instruction for further industrial applications using ionic liquids as solvents via COSMO-SAC computer-aided screening
Jens-uwe Repke - One of the best experts on this subject based on the ideXlab platform.
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Pressure swing batch distillation for Homogeneous Azeotropic separation
Chemical Engineering Research and Design, 2007Co-Authors: Jens-uwe Repke, Andreas Klein, David Bogle, G. WoznyAbstract:The separation of the Homogeneous Azeotropic Mixture acetonitrile/water by pressure swing distillation (PSD) is considered. In this work, the PSD is operated as a discontinuous (batch) process and two basic batch modes, regular and inverted, are investigated. The processes are analysed and a rigorous dynamic model for both batch PSD processes is formulated. The model takes a cold and empty column as an initial condition. Because of the lack of experimental data, in particular for the inverted batch distillation new experiments were carried out. The regular and the inverted batch PSD consist of two steps, a low pressure and a high pressure run, and experimental results are shown for each step. The simulations fit the experiments with good accuracy. Using the validated model, a simulation study to discuss different batch processes is carried out and an alternative inverted batch process is proposed.
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Homogeneous Azeotropic pressure swing distillation: Continuous and batch process
Computer Aided Chemical Engineering, 2005Co-Authors: Jens-uwe Repke, Andreas KleinAbstract:Abstract The separation of a binary Homogeneous Azeotropic Mixture using pressure swing distillation will be analysed on the example of acetonitrile/water. Two different processes are considered: the continuous heat- and mass-integrated process and the inverted batch process. For both processes a model is developed and experimental data are given. In the paper the potential of the pressure swing distillation for the separation of binary homogenous Azeotropic Mixtures will be demonstrated, in particular the process performance is investigated and application aspects for the continuous as well as the inverted batch process are discussed.
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Homogeneous Azeotropic distillation in an energy- and mass-integrated pressure swing column system
Computer Aided Chemical Engineering, 2004Co-Authors: Jens-uwe Repke, Andreas Klein, Florian FornerAbstract:Abstract The separation of a Homogeneous Azeotropic Mixture using the pressure swing distillation process is insufficient researched and therefore industrial applications are limited. The process performance of a heat- and mass-integrated pressure swing distillation column system to separate an acetonitril/water Mixture is analysed in the scope of this paper. Different control structures are developed and compared by using a rigorous dynamic model written in gProms®. The disturbance performance of the process is analysed especially for changes in feed concentration and feed flow rate. Remarkable is the robust process operability by changes of the feed concentration from one distillation region to the other region. The robust process performance of the pressure swing distillation column system relative to feed disturbance is demonstrated.
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Pressure swing distillation for separation of Homogeneous Azeotropic Mixtures in a mass- and heat- integrated column system: operation performance
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788), 1Co-Authors: Jens-uwe Repke, Florian Forner, Andreas Klein, G. WoznyAbstract:The separation of a Homogeneous Azeotropic Mixture using pressure swing distillation process is deficient investigated, therefore industrial applications are limited. The dynamic behaviour of a heat- and mass-integrated pressure swing distillation column system to separate an acetonitrile/water Mixture is analysed. Different control structures are developed and compared by using a rigorous dynamic model written in gProms/spl reg/. A first validation of the complex model is given. The disturbance performance of the process is analysed especially for changes in feed concentrations. Remarkable is the robust process operability by changes of the feed concentration from one distillation region to the other region. The robust process performance of the pressure swing distillation column system relative to feed disturbance is demonstrated.
G. Wozny - One of the best experts on this subject based on the ideXlab platform.
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Pressure swing batch distillation for Homogeneous Azeotropic separation
Chemical Engineering Research and Design, 2007Co-Authors: Jens-uwe Repke, Andreas Klein, David Bogle, G. WoznyAbstract:The separation of the Homogeneous Azeotropic Mixture acetonitrile/water by pressure swing distillation (PSD) is considered. In this work, the PSD is operated as a discontinuous (batch) process and two basic batch modes, regular and inverted, are investigated. The processes are analysed and a rigorous dynamic model for both batch PSD processes is formulated. The model takes a cold and empty column as an initial condition. Because of the lack of experimental data, in particular for the inverted batch distillation new experiments were carried out. The regular and the inverted batch PSD consist of two steps, a low pressure and a high pressure run, and experimental results are shown for each step. The simulations fit the experiments with good accuracy. Using the validated model, a simulation study to discuss different batch processes is carried out and an alternative inverted batch process is proposed.
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Pressure swing distillation for separation of Homogeneous Azeotropic Mixtures in a mass- and heat- integrated column system: operation performance
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788), 1Co-Authors: Jens-uwe Repke, Florian Forner, Andreas Klein, G. WoznyAbstract:The separation of a Homogeneous Azeotropic Mixture using pressure swing distillation process is deficient investigated, therefore industrial applications are limited. The dynamic behaviour of a heat- and mass-integrated pressure swing distillation column system to separate an acetonitrile/water Mixture is analysed. Different control structures are developed and compared by using a rigorous dynamic model written in gProms/spl reg/. A first validation of the complex model is given. The disturbance performance of the process is analysed especially for changes in feed concentrations. Remarkable is the robust process operability by changes of the feed concentration from one distillation region to the other region. The robust process performance of the pressure swing distillation column system relative to feed disturbance is demonstrated.
Zhaoyou Zhu - One of the best experts on this subject based on the ideXlab platform.
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Computer-Aided Screening of Ionic Liquids As Entrainers for Separating Methyl Acetate and Methanol via Extractive Distillation
Industrial & Engineering Chemistry Research, 2018Co-Authors: Zhaoyou Zhu, Xueli Geng, Chao Chen, Yinglong Wang, Jun GaoAbstract:In the production of poly(vinyl alcohol), the raw materials methyl acetate (MeOAc) and methanol (MeOH) exist as a Homogeneous Azeotropic Mixture. Twenty-five kinds of ionic liquids, composed of five types of cations and five types of anions, were studied using the COSMO-SAC method. The σ-profile data for each component and the selectivity at infinite dilution (S∞) were calculated and analyzed, respectively. 1-Hexyl-3-methylimidazolium chloride ([HMIM][Cl]) and 1-butyl-3-methylimidazolium chloride ([BMIM][Cl]) were selected as suitable entrainers based on the COSMO-SAC method. The binary interaction parameters of the NRTL model of the MeOAc/ionic liquid and MeOH/ionic liquid systems were regressed. The conceptual design for the separation of MeOAc and MeOH using ionic liquids as entrainers was investigated. The comparison of two processes using two entrainers was carried out from an economic perspective. The total annual cost (TAC) of the process using [HMIM][Cl] as an entrainer can be reduced by 16.5% com...
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Computer-Aided Screening of Ionic Liquids As Entrainers for Separating Methyl Acetate and Methanol via Extractive Distillation
2018Co-Authors: Zhaoyou Zhu, Xueli Geng, Chao Chen, Yinglong Wang, Jun GaoAbstract:In the production of poly(vinyl alcohol), the raw materials methyl acetate (MeOAc) and methanol (MeOH) exist as a Homogeneous Azeotropic Mixture. Twenty-five kinds of ionic liquids, composed of five types of cations and five types of anions, were studied using the COSMO-SAC method. The σ-profile data for each component and the selectivity at infinite dilution (S∞) were calculated and analyzed, respectively. 1-Hexyl-3-methylimidazolium chloride ([HMIM][Cl]) and 1-butyl-3-methylimidazolium chloride ([BMIM][Cl]) were selected as suitable entrainers based on the COSMO-SAC method. The binary interaction parameters of the NRTL model of the MeOAc/ionic liquid and MeOH/ionic liquid systems were regressed. The conceptual design for the separation of MeOAc and MeOH using ionic liquids as entrainers was investigated. The comparison of two processes using two entrainers was carried out from an economic perspective. The total annual cost (TAC) of the process using [HMIM][Cl] as an entrainer can be reduced by 16.5% compared with that of the process using [BMIM][Cl]. The results indicated that the COSMO-SAC method is feasible for screening ionic liquids as optimal entrainers. This work could provide theoretical instruction for further industrial applications using ionic liquids as solvents via COSMO-SAC computer-aided screening
Andreas Klein - One of the best experts on this subject based on the ideXlab platform.
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Pressure swing batch distillation for Homogeneous Azeotropic separation
Chemical Engineering Research and Design, 2007Co-Authors: Jens-uwe Repke, Andreas Klein, David Bogle, G. WoznyAbstract:The separation of the Homogeneous Azeotropic Mixture acetonitrile/water by pressure swing distillation (PSD) is considered. In this work, the PSD is operated as a discontinuous (batch) process and two basic batch modes, regular and inverted, are investigated. The processes are analysed and a rigorous dynamic model for both batch PSD processes is formulated. The model takes a cold and empty column as an initial condition. Because of the lack of experimental data, in particular for the inverted batch distillation new experiments were carried out. The regular and the inverted batch PSD consist of two steps, a low pressure and a high pressure run, and experimental results are shown for each step. The simulations fit the experiments with good accuracy. Using the validated model, a simulation study to discuss different batch processes is carried out and an alternative inverted batch process is proposed.
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Homogeneous Azeotropic pressure swing distillation: Continuous and batch process
Computer Aided Chemical Engineering, 2005Co-Authors: Jens-uwe Repke, Andreas KleinAbstract:Abstract The separation of a binary Homogeneous Azeotropic Mixture using pressure swing distillation will be analysed on the example of acetonitrile/water. Two different processes are considered: the continuous heat- and mass-integrated process and the inverted batch process. For both processes a model is developed and experimental data are given. In the paper the potential of the pressure swing distillation for the separation of binary homogenous Azeotropic Mixtures will be demonstrated, in particular the process performance is investigated and application aspects for the continuous as well as the inverted batch process are discussed.
-
Homogeneous Azeotropic distillation in an energy- and mass-integrated pressure swing column system
Computer Aided Chemical Engineering, 2004Co-Authors: Jens-uwe Repke, Andreas Klein, Florian FornerAbstract:Abstract The separation of a Homogeneous Azeotropic Mixture using the pressure swing distillation process is insufficient researched and therefore industrial applications are limited. The process performance of a heat- and mass-integrated pressure swing distillation column system to separate an acetonitril/water Mixture is analysed in the scope of this paper. Different control structures are developed and compared by using a rigorous dynamic model written in gProms®. The disturbance performance of the process is analysed especially for changes in feed concentration and feed flow rate. Remarkable is the robust process operability by changes of the feed concentration from one distillation region to the other region. The robust process performance of the pressure swing distillation column system relative to feed disturbance is demonstrated.
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Pressure swing distillation for separation of Homogeneous Azeotropic Mixtures in a mass- and heat- integrated column system: operation performance
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788), 1Co-Authors: Jens-uwe Repke, Florian Forner, Andreas Klein, G. WoznyAbstract:The separation of a Homogeneous Azeotropic Mixture using pressure swing distillation process is deficient investigated, therefore industrial applications are limited. The dynamic behaviour of a heat- and mass-integrated pressure swing distillation column system to separate an acetonitrile/water Mixture is analysed. Different control structures are developed and compared by using a rigorous dynamic model written in gProms/spl reg/. A first validation of the complex model is given. The disturbance performance of the process is analysed especially for changes in feed concentrations. Remarkable is the robust process operability by changes of the feed concentration from one distillation region to the other region. The robust process performance of the pressure swing distillation column system relative to feed disturbance is demonstrated.