The Experts below are selected from a list of 3159 Experts worldwide ranked by ideXlab platform

Leo A Behie - One of the best experts on this subject based on the ideXlab platform.

  • including radiative Heat transfer and reaction quenching in modeling a claus plant Waste Heat Boiler
    Industrial & Engineering Chemistry Research, 1994
    Co-Authors: Kunal Karan, Anil K. Mehrotra, Leo A Behie
    Abstract:

    Due to increasingly stringent sulfur emission regulations, improvements are necessary in the modified Claus process. A recently proposed model by Nasato et al. for the Claus plant Waste Heat Boiler (WHB) is improved by including radiative Heat transfer, which yields significant changes in the predicted Heat flux and the temperature profile along the WHB tube, leading to a faster quenching of chemical reactions. For the WHB considered, radiation accounts for approximately 20% of the Heat transferred by convection alone. More importantly, operating the WHB at a higher gas mass flux is shown to enhance reaction quenching, resulting in a doubling of the predicted hydrogen flow rate. This increase in hydrogen flow rate is sufficient to completely meet the hydrogen requirement of the H[sub 2]S recovery process considered, which would eliminate the need for a hydrogen plant.

  • modeling reaction quench times in the Waste Heat Boiler of a claus plant
    Industrial & Engineering Chemistry Research, 1994
    Co-Authors: Linda V Nasato, Kunal Karan, Anil K. Mehrotra, Leo A Behie
    Abstract:

    At the high temperatures found in the modified Claus reaction furnace, the thermal decomposition and oxidation of H[sub 2]S yields large quantities of desirable products, gaseous hydrogen (H[sub 2]) and sulfur (S[sub 2]). However, as the temperature of the gas stream is lowered in the Waste Heat Boiler (WHB) located downstream of the furnace, the reverse reaction occurs leading to reassociation of H[sub 2] and S[sub 2] molecules. To examine the reaction quenching capabilities of the WHB, a rigorous computer model was developed incorporating recently published intrinsic kinetic data. A sensitivity study performed with the model demonstrated that WHBs have a wide range of operation with gas mass flux in the tubes from 4 to 24 kg/(m[sup 2] [center dot] s). Most important, the model showed that is was possible to operate WHBs such that quench times could be decreased to 40 ms, which is a reduction by 60% compared to a base case scenario. Furthermore, hydrogen production could be increased by over 20% simply by reconfiguring the WHB tubes.

Kunal Karan - One of the best experts on this subject based on the ideXlab platform.

  • including radiative Heat transfer and reaction quenching in modeling a claus plant Waste Heat Boiler
    Industrial & Engineering Chemistry Research, 1994
    Co-Authors: Kunal Karan, Anil K. Mehrotra, Leo A Behie
    Abstract:

    Due to increasingly stringent sulfur emission regulations, improvements are necessary in the modified Claus process. A recently proposed model by Nasato et al. for the Claus plant Waste Heat Boiler (WHB) is improved by including radiative Heat transfer, which yields significant changes in the predicted Heat flux and the temperature profile along the WHB tube, leading to a faster quenching of chemical reactions. For the WHB considered, radiation accounts for approximately 20% of the Heat transferred by convection alone. More importantly, operating the WHB at a higher gas mass flux is shown to enhance reaction quenching, resulting in a doubling of the predicted hydrogen flow rate. This increase in hydrogen flow rate is sufficient to completely meet the hydrogen requirement of the H[sub 2]S recovery process considered, which would eliminate the need for a hydrogen plant.

  • modeling reaction quench times in the Waste Heat Boiler of a claus plant
    Industrial & Engineering Chemistry Research, 1994
    Co-Authors: Linda V Nasato, Kunal Karan, Anil K. Mehrotra, Leo A Behie
    Abstract:

    At the high temperatures found in the modified Claus reaction furnace, the thermal decomposition and oxidation of H[sub 2]S yields large quantities of desirable products, gaseous hydrogen (H[sub 2]) and sulfur (S[sub 2]). However, as the temperature of the gas stream is lowered in the Waste Heat Boiler (WHB) located downstream of the furnace, the reverse reaction occurs leading to reassociation of H[sub 2] and S[sub 2] molecules. To examine the reaction quenching capabilities of the WHB, a rigorous computer model was developed incorporating recently published intrinsic kinetic data. A sensitivity study performed with the model demonstrated that WHBs have a wide range of operation with gas mass flux in the tubes from 4 to 24 kg/(m[sup 2] [center dot] s). Most important, the model showed that is was possible to operate WHBs such that quench times could be decreased to 40 ms, which is a reduction by 60% compared to a base case scenario. Furthermore, hydrogen production could be increased by over 20% simply by reconfiguring the WHB tubes.

Anil K. Mehrotra - One of the best experts on this subject based on the ideXlab platform.

  • including radiative Heat transfer and reaction quenching in modeling a claus plant Waste Heat Boiler
    Industrial & Engineering Chemistry Research, 1994
    Co-Authors: Kunal Karan, Anil K. Mehrotra, Leo A Behie
    Abstract:

    Due to increasingly stringent sulfur emission regulations, improvements are necessary in the modified Claus process. A recently proposed model by Nasato et al. for the Claus plant Waste Heat Boiler (WHB) is improved by including radiative Heat transfer, which yields significant changes in the predicted Heat flux and the temperature profile along the WHB tube, leading to a faster quenching of chemical reactions. For the WHB considered, radiation accounts for approximately 20% of the Heat transferred by convection alone. More importantly, operating the WHB at a higher gas mass flux is shown to enhance reaction quenching, resulting in a doubling of the predicted hydrogen flow rate. This increase in hydrogen flow rate is sufficient to completely meet the hydrogen requirement of the H[sub 2]S recovery process considered, which would eliminate the need for a hydrogen plant.

  • modeling reaction quench times in the Waste Heat Boiler of a claus plant
    Industrial & Engineering Chemistry Research, 1994
    Co-Authors: Linda V Nasato, Kunal Karan, Anil K. Mehrotra, Leo A Behie
    Abstract:

    At the high temperatures found in the modified Claus reaction furnace, the thermal decomposition and oxidation of H[sub 2]S yields large quantities of desirable products, gaseous hydrogen (H[sub 2]) and sulfur (S[sub 2]). However, as the temperature of the gas stream is lowered in the Waste Heat Boiler (WHB) located downstream of the furnace, the reverse reaction occurs leading to reassociation of H[sub 2] and S[sub 2] molecules. To examine the reaction quenching capabilities of the WHB, a rigorous computer model was developed incorporating recently published intrinsic kinetic data. A sensitivity study performed with the model demonstrated that WHBs have a wide range of operation with gas mass flux in the tubes from 4 to 24 kg/(m[sup 2] [center dot] s). Most important, the model showed that is was possible to operate WHBs such that quench times could be decreased to 40 ms, which is a reduction by 60% compared to a base case scenario. Furthermore, hydrogen production could be increased by over 20% simply by reconfiguring the WHB tubes.

Linda V Nasato - One of the best experts on this subject based on the ideXlab platform.

  • modeling reaction quench times in the Waste Heat Boiler of a claus plant
    Industrial & Engineering Chemistry Research, 1994
    Co-Authors: Linda V Nasato, Kunal Karan, Anil K. Mehrotra, Leo A Behie
    Abstract:

    At the high temperatures found in the modified Claus reaction furnace, the thermal decomposition and oxidation of H[sub 2]S yields large quantities of desirable products, gaseous hydrogen (H[sub 2]) and sulfur (S[sub 2]). However, as the temperature of the gas stream is lowered in the Waste Heat Boiler (WHB) located downstream of the furnace, the reverse reaction occurs leading to reassociation of H[sub 2] and S[sub 2] molecules. To examine the reaction quenching capabilities of the WHB, a rigorous computer model was developed incorporating recently published intrinsic kinetic data. A sensitivity study performed with the model demonstrated that WHBs have a wide range of operation with gas mass flux in the tubes from 4 to 24 kg/(m[sup 2] [center dot] s). Most important, the model showed that is was possible to operate WHBs such that quench times could be decreased to 40 ms, which is a reduction by 60% compared to a base case scenario. Furthermore, hydrogen production could be increased by over 20% simply by reconfiguring the WHB tubes.

Shi Qin - One of the best experts on this subject based on the ideXlab platform.