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Stéphane Déchelotte – One of the best experts on this subject based on the ideXlab platform.

  • Recovery comparisons–hot nitrogen Vs steam regeneration of toxic dichloromethane from Activated Carbon Beds in oil sands process.
    Journal of Hazardous Materials, 2012
    Co-Authors: Shivaji G Ramalingam, Pascaline Pré, Sylvain Giraudet, Laurent Le Coq, Pierre Le Cloirec, Olivier Baudouin, Stéphane Déchelotte
    Abstract:

    The regeneration experiments of dichloromethane from Activated Carbon Bed had been carried out by both hot nitrogen and steam to evaluate the regeneration performance and the operating cost of the regeneration step. Factorial Experimental Design (FED) tool had been implemented to optimize the temperature of nitrogen and the superficial velocity of the nitrogen to achieve maximum regeneration at an optimized operating cost. All the experimental results of adsorption step, hot nitrogen and steam regeneration step had been validated by the simulation model PROSIM. The average error percentage between the simulation and experiment based on the mass of adsorption of dichloromethane was 2.6%. The average error percentages between the simulations and experiments based on the mass of dichloromethane regenerated by nitrogen regeneration and steam regeneration were 3 and 12%, respectively. From the experiments, it had been shown that both the hot nitrogen and steam regeneration had regenerated 84% of dichloromethane. But the choice of hot nitrogen or steam regeneration depends on the regeneration time, operating costs, and purity of dichloromethane regenerated. A thorough investigation had been made about the advantages and limitations of both the hot nitrogen and steam regeneration of dichloromethane.

  • Recovery comparisons—Hot nitrogen Vs steam regeneration of toxic dichloromethane from Activated Carbon Beds in oil sands process
    Journal of Hazardous Materials, 2012
    Co-Authors: Shivaji G Ramalingam, Sylvain Giraudet, Pierre Le Cloirec, Olivier Baudouin, Stéphane Déchelotte
    Abstract:

    The regeneration experiments of dichloromethane from Activated Carbon Bed had been carried out by both hot nitrogen and steam to evaluate the regeneration performance and the operating cost of the regeneration step. Factorial Experimental Design (FED) tool had been implemented to optimize the temperature of nitrogen and the superficial velocity of the nitrogen to achieve maximum regeneration at an optimized operating cost. All the experimental results of adsorption step, hot nitrogen and steam regeneration step had been validated by the simulation model PROSIM. The average error percentage between the simulation and experiment based on the mass of adsorption of dichloromethane was 2.6%. The average error percentages between the simulations and experiments based on the mass of dichloromethane regenerated by nitrogen regeneration and steam regeneration were 3 and 12%, respectively. From the experiments, it had been shown that both the hot nitrogen and steam regeneration had regenerated 84% of dichloromethane. But the choice of hot nitrogen or steam regeneration depends on the regeneration time, operating costs, and purity of dichloromethane regenerated. A thorough investigation had been made about the advantages and limitations of both the hot nitrogen and steam regeneration of dichloromethane.

  • Hazardous dichloromethane recovery in combined temperature and vacuum pressure swing adsorption process.
    Journal of Hazardous Materials, 2011
    Co-Authors: Shivaji Ganesan Ramalingam, Stéphane Déchelotte, Pascaline Pré, Sylvain Giraudet, Pierre Le Cloirec, Olivier Baudouin, Jerôme Saussac, Laurence Le Coq, Serge Nicolas, Alice Medevielle
    Abstract:

    Organic vapors emitted from solvents used in chemical and pharmaceutical processes, or from hydroCarbon fuel storage stations at oil terminals, can be efficiently captured by adsorption onto Activated Carbon Beds. To recover vapors after the adsorption step, two modes of regeneration were selected and could be possibly combined: thermal desorption by hot nitrogen flow and vacuum depressurization (VTSA). Because of ignition risks, the conditions in which the Beds operate during the adsorption and regeneration steps need to be strictly controlled, as well as optimized to maintain good performances. In this work, the optimal conditions to be applied during the desorption step were determined from factorial experimental design (FED), and validated from the process simulation results. The regeneration performances were compared in terms of Bed regeneration rate, concentration of recovered volatile organic compounds (VOC) and operating costs. As an example, this methodology was applied in case of dichloromethane. It has been shown that the combination of thermal and vacuum regeneration allows reaching 82% recovery of dichloromethane. Moreover, the vacuum desorption ended up in cooling the Activated Carbon Bed from 93°C to 63°C and so that it significantly reduces the cooling time before starting a new cycle.

Pierre Le Cloirec – One of the best experts on this subject based on the ideXlab platform.

  • Recovery comparisons–hot nitrogen Vs steam regeneration of toxic dichloromethane from Activated Carbon Beds in oil sands process.
    Journal of Hazardous Materials, 2012
    Co-Authors: Shivaji G Ramalingam, Pascaline Pré, Sylvain Giraudet, Laurent Le Coq, Pierre Le Cloirec, Olivier Baudouin, Stéphane Déchelotte
    Abstract:

    The regeneration experiments of dichloromethane from Activated Carbon Bed had been carried out by both hot nitrogen and steam to evaluate the regeneration performance and the operating cost of the regeneration step. Factorial Experimental Design (FED) tool had been implemented to optimize the temperature of nitrogen and the superficial velocity of the nitrogen to achieve maximum regeneration at an optimized operating cost. All the experimental results of adsorption step, hot nitrogen and steam regeneration step had been validated by the simulation model PROSIM. The average error percentage between the simulation and experiment based on the mass of adsorption of dichloromethane was 2.6%. The average error percentages between the simulations and experiments based on the mass of dichloromethane regenerated by nitrogen regeneration and steam regeneration were 3 and 12%, respectively. From the experiments, it had been shown that both the hot nitrogen and steam regeneration had regenerated 84% of dichloromethane. But the choice of hot nitrogen or steam regeneration depends on the regeneration time, operating costs, and purity of dichloromethane regenerated. A thorough investigation had been made about the advantages and limitations of both the hot nitrogen and steam regeneration of dichloromethane.

  • Recovery comparisons—Hot nitrogen Vs steam regeneration of toxic dichloromethane from Activated Carbon Beds in oil sands process
    Journal of Hazardous Materials, 2012
    Co-Authors: Shivaji G Ramalingam, Sylvain Giraudet, Pierre Le Cloirec, Olivier Baudouin, Stéphane Déchelotte
    Abstract:

    The regeneration experiments of dichloromethane from Activated Carbon Bed had been carried out by both hot nitrogen and steam to evaluate the regeneration performance and the operating cost of the regeneration step. Factorial Experimental Design (FED) tool had been implemented to optimize the temperature of nitrogen and the superficial velocity of the nitrogen to achieve maximum regeneration at an optimized operating cost. All the experimental results of adsorption step, hot nitrogen and steam regeneration step had been validated by the simulation model PROSIM. The average error percentage between the simulation and experiment based on the mass of adsorption of dichloromethane was 2.6%. The average error percentages between the simulations and experiments based on the mass of dichloromethane regenerated by nitrogen regeneration and steam regeneration were 3 and 12%, respectively. From the experiments, it had been shown that both the hot nitrogen and steam regeneration had regenerated 84% of dichloromethane. But the choice of hot nitrogen or steam regeneration depends on the regeneration time, operating costs, and purity of dichloromethane regenerated. A thorough investigation had been made about the advantages and limitations of both the hot nitrogen and steam regeneration of dichloromethane.

  • Hazardous dichloromethane recovery in combined temperature and vacuum pressure swing adsorption process.
    Journal of Hazardous Materials, 2011
    Co-Authors: Shivaji Ganesan Ramalingam, Stéphane Déchelotte, Pascaline Pré, Sylvain Giraudet, Pierre Le Cloirec, Olivier Baudouin, Jerôme Saussac, Laurence Le Coq, Serge Nicolas, Alice Medevielle
    Abstract:

    Organic vapors emitted from solvents used in chemical and pharmaceutical processes, or from hydroCarbon fuel storage stations at oil terminals, can be efficiently captured by adsorption onto Activated Carbon Beds. To recover vapors after the adsorption step, two modes of regeneration were selected and could be possibly combined: thermal desorption by hot nitrogen flow and vacuum depressurization (VTSA). Because of ignition risks, the conditions in which the Beds operate during the adsorption and regeneration steps need to be strictly controlled, as well as optimized to maintain good performances. In this work, the optimal conditions to be applied during the desorption step were determined from factorial experimental design (FED), and validated from the process simulation results. The regeneration performances were compared in terms of Bed regeneration rate, concentration of recovered volatile organic compounds (VOC) and operating costs. As an example, this methodology was applied in case of dichloromethane. It has been shown that the combination of thermal and vacuum regeneration allows reaching 82% recovery of dichloromethane. Moreover, the vacuum desorption ended up in cooling the Activated Carbon Bed from 93°C to 63°C and so that it significantly reduces the cooling time before starting a new cycle.

Sylvain Giraudet – One of the best experts on this subject based on the ideXlab platform.

  • Recovery comparisons–hot nitrogen Vs steam regeneration of toxic dichloromethane from Activated Carbon Beds in oil sands process.
    Journal of Hazardous Materials, 2012
    Co-Authors: Shivaji G Ramalingam, Pascaline Pré, Sylvain Giraudet, Laurent Le Coq, Pierre Le Cloirec, Olivier Baudouin, Stéphane Déchelotte
    Abstract:

    The regeneration experiments of dichloromethane from Activated Carbon Bed had been carried out by both hot nitrogen and steam to evaluate the regeneration performance and the operating cost of the regeneration step. Factorial Experimental Design (FED) tool had been implemented to optimize the temperature of nitrogen and the superficial velocity of the nitrogen to achieve maximum regeneration at an optimized operating cost. All the experimental results of adsorption step, hot nitrogen and steam regeneration step had been validated by the simulation model PROSIM. The average error percentage between the simulation and experiment based on the mass of adsorption of dichloromethane was 2.6%. The average error percentages between the simulations and experiments based on the mass of dichloromethane regenerated by nitrogen regeneration and steam regeneration were 3 and 12%, respectively. From the experiments, it had been shown that both the hot nitrogen and steam regeneration had regenerated 84% of dichloromethane. But the choice of hot nitrogen or steam regeneration depends on the regeneration time, operating costs, and purity of dichloromethane regenerated. A thorough investigation had been made about the advantages and limitations of both the hot nitrogen and steam regeneration of dichloromethane.

  • Recovery comparisons—Hot nitrogen Vs steam regeneration of toxic dichloromethane from Activated Carbon Beds in oil sands process
    Journal of Hazardous Materials, 2012
    Co-Authors: Shivaji G Ramalingam, Sylvain Giraudet, Pierre Le Cloirec, Olivier Baudouin, Stéphane Déchelotte
    Abstract:

    The regeneration experiments of dichloromethane from Activated Carbon Bed had been carried out by both hot nitrogen and steam to evaluate the regeneration performance and the operating cost of the regeneration step. Factorial Experimental Design (FED) tool had been implemented to optimize the temperature of nitrogen and the superficial velocity of the nitrogen to achieve maximum regeneration at an optimized operating cost. All the experimental results of adsorption step, hot nitrogen and steam regeneration step had been validated by the simulation model PROSIM. The average error percentage between the simulation and experiment based on the mass of adsorption of dichloromethane was 2.6%. The average error percentages between the simulations and experiments based on the mass of dichloromethane regenerated by nitrogen regeneration and steam regeneration were 3 and 12%, respectively. From the experiments, it had been shown that both the hot nitrogen and steam regeneration had regenerated 84% of dichloromethane. But the choice of hot nitrogen or steam regeneration depends on the regeneration time, operating costs, and purity of dichloromethane regenerated. A thorough investigation had been made about the advantages and limitations of both the hot nitrogen and steam regeneration of dichloromethane.

  • Hazardous dichloromethane recovery in combined temperature and vacuum pressure swing adsorption process.
    Journal of Hazardous Materials, 2011
    Co-Authors: Shivaji Ganesan Ramalingam, Stéphane Déchelotte, Pascaline Pré, Sylvain Giraudet, Pierre Le Cloirec, Olivier Baudouin, Jerôme Saussac, Laurence Le Coq, Serge Nicolas, Alice Medevielle
    Abstract:

    Organic vapors emitted from solvents used in chemical and pharmaceutical processes, or from hydroCarbon fuel storage stations at oil terminals, can be efficiently captured by adsorption onto Activated Carbon Beds. To recover vapors after the adsorption step, two modes of regeneration were selected and could be possibly combined: thermal desorption by hot nitrogen flow and vacuum depressurization (VTSA). Because of ignition risks, the conditions in which the Beds operate during the adsorption and regeneration steps need to be strictly controlled, as well as optimized to maintain good performances. In this work, the optimal conditions to be applied during the desorption step were determined from factorial experimental design (FED), and validated from the process simulation results. The regeneration performances were compared in terms of Bed regeneration rate, concentration of recovered volatile organic compounds (VOC) and operating costs. As an example, this methodology was applied in case of dichloromethane. It has been shown that the combination of thermal and vacuum regeneration allows reaching 82% recovery of dichloromethane. Moreover, the vacuum desorption ended up in cooling the Activated Carbon Bed from 93°C to 63°C and so that it significantly reduces the cooling time before starting a new cycle.