The Experts below are selected from a list of 825 Experts worldwide ranked by ideXlab platform

Thomas J. Bruno - One of the best experts on this subject based on the ideXlab platform.

  • Measuring Sulfur Content and Corrosivity of North American Petroleum with the Advanced Distillation Curve Method
    2015
    Co-Authors: Peter Y. Hsieh, Thomas J. Bruno
    Abstract:

    Petroleum is a complex fluid whose sulfur content varies considerably depending on its place of origin. Sour crude petroleum, which contains more than 0.5% sulfur by mass, often requires additional processing due to the potential for corrosion and catalyst poisoning during refining. Estimating or measuring the sulfur content of Distillate fractions as a function of boiling temperature is an important step in petroleum refining. The advanced distillation curve (ADC) method was developed to provide a composition-explicit data channel for the measurement of thermophysical and chemical properties of complex fluids. We applied the ADC method to a composite sample of North American petroleum to characterize its boiling temperature, density, and composition as a function of Distillate volume fraction. The compositions of Light Distillate fractions were used to estimate their densities and refractive indices based on critically evaluated thermodynamic data. The estimated densities of the Distillate fractions are consistent with pycnometry data. The sulfur content, measured with a sulfur chemiluminescence detector, was found to be within the range predicted by an empirical model based on Distillate boiling temperature and density. The corrosivity of various Distillate cuts was tested with a modified copper strip corrosion test. Copper tarnishing was found to depend not only on the amount of sulfur present but also on the temperature at which the fraction is collected

  • measuring sulfur content and corrosivity of north american petroleum with the advanced distillation curve method
    Energy & Fuels, 2014
    Co-Authors: Peter Y Hsieh, Thomas J. Bruno
    Abstract:

    Petroleum is a complex fluid whose sulfur content varies considerably depending on its place of origin. Sour crude petroleum, which contains more than 0.5% sulfur by mass, often requires additional processing due to the potential for corrosion and catalyst poisoning during refining. Estimating or measuring the sulfur content of Distillate fractions as a function of boiling temperature is an important step in petroleum refining. The advanced distillation curve (ADC) method was developed to provide a composition-explicit data channel for the measurement of thermophysical and chemical properties of complex fluids. We applied the ADC method to a composite sample of North American petroleum to characterize its boiling temperature, density, and composition as a function of Distillate volume fraction. The compositions of Light Distillate fractions were used to estimate their densities and refractive indices based on critically evaluated thermodynamic data. The estimated densities of the Distillate fractions are ...

Peter Y Hsieh - One of the best experts on this subject based on the ideXlab platform.

  • measuring sulfur content and corrosivity of north american petroleum with the advanced distillation curve method
    Energy & Fuels, 2014
    Co-Authors: Peter Y Hsieh, Thomas J. Bruno
    Abstract:

    Petroleum is a complex fluid whose sulfur content varies considerably depending on its place of origin. Sour crude petroleum, which contains more than 0.5% sulfur by mass, often requires additional processing due to the potential for corrosion and catalyst poisoning during refining. Estimating or measuring the sulfur content of Distillate fractions as a function of boiling temperature is an important step in petroleum refining. The advanced distillation curve (ADC) method was developed to provide a composition-explicit data channel for the measurement of thermophysical and chemical properties of complex fluids. We applied the ADC method to a composite sample of North American petroleum to characterize its boiling temperature, density, and composition as a function of Distillate volume fraction. The compositions of Light Distillate fractions were used to estimate their densities and refractive indices based on critically evaluated thermodynamic data. The estimated densities of the Distillate fractions are ...

Jiazhi Xiao - One of the best experts on this subject based on the ideXlab platform.

  • kinetic model for the deep severity thermal reaction in the coke drum of delayed coking
    Energy & Fuels, 2017
    Co-Authors: Junwei Yang, Guoping Shen, Peilin Li, Chuxin Zhang, Jiazhi Xiao
    Abstract:

    The coke drum is the main reactor of the delayed coking process, in which the deep-severity thermal reaction of heavy oil takes place. To simulate the product distribution in this reactor, a kinetic model for the deep-severity thermal reaction was developed on the basis of the experimental data of a vacuum residuum in a microbatch reactor at 430–490 °C. The model-predicted results agree well with the experimental values. The ratio of the cracking gas/Light Distillate rate constant increases with the reaction temperature. Both the primary condensation/cracking rate constant and the secondary condensation/cracking rate constant increase with the reaction temperature. It means that the lower reaction temperature is advantageous to increase the Distillate yield at the same reaction severity. Furthermore, a practical transformation method was presented to improve the suitability of this model. The comparison results indicated that this transformation method is available for the kinetic model in this research. ...

  • Kinetic Model for the Deep-Severity Thermal Reaction in the Coke Drum of Delayed Coking
    2017
    Co-Authors: Junwei Yang, Guoping Shen, Chuxin Zhang, Wei Wei, Jiazhi Xiao
    Abstract:

    The coke drum is the main reactor of the delayed coking process, in which the deep-severity thermal reaction of heavy oil takes place. To simulate the product distribution in this reactor, a kinetic model for the deep-severity thermal reaction was developed on the basis of the experimental data of a vacuum residuum in a microbatch reactor at 430–490 °C. The model-predicted results agree well with the experimental values. The ratio of the cracking gas/Light Distillate rate constant increases with the reaction temperature. Both the primary condensation/cracking rate constant and the secondary condensation/cracking rate constant increase with the reaction temperature. It means that the lower reaction temperature is advantageous to increase the Distillate yield at the same reaction severity. Furthermore, a practical transformation method was presented to improve the suitability of this model. The comparison results indicated that this transformation method is available for the kinetic model in this research. Moreover, it can also be used for other lumping models similarly

Junwei Yang - One of the best experts on this subject based on the ideXlab platform.

  • kinetic model for the deep severity thermal reaction in the coke drum of delayed coking
    Energy & Fuels, 2017
    Co-Authors: Junwei Yang, Guoping Shen, Peilin Li, Chuxin Zhang, Jiazhi Xiao
    Abstract:

    The coke drum is the main reactor of the delayed coking process, in which the deep-severity thermal reaction of heavy oil takes place. To simulate the product distribution in this reactor, a kinetic model for the deep-severity thermal reaction was developed on the basis of the experimental data of a vacuum residuum in a microbatch reactor at 430–490 °C. The model-predicted results agree well with the experimental values. The ratio of the cracking gas/Light Distillate rate constant increases with the reaction temperature. Both the primary condensation/cracking rate constant and the secondary condensation/cracking rate constant increase with the reaction temperature. It means that the lower reaction temperature is advantageous to increase the Distillate yield at the same reaction severity. Furthermore, a practical transformation method was presented to improve the suitability of this model. The comparison results indicated that this transformation method is available for the kinetic model in this research. ...

  • Kinetic Model for the Deep-Severity Thermal Reaction in the Coke Drum of Delayed Coking
    2017
    Co-Authors: Junwei Yang, Guoping Shen, Chuxin Zhang, Wei Wei, Jiazhi Xiao
    Abstract:

    The coke drum is the main reactor of the delayed coking process, in which the deep-severity thermal reaction of heavy oil takes place. To simulate the product distribution in this reactor, a kinetic model for the deep-severity thermal reaction was developed on the basis of the experimental data of a vacuum residuum in a microbatch reactor at 430–490 °C. The model-predicted results agree well with the experimental values. The ratio of the cracking gas/Light Distillate rate constant increases with the reaction temperature. Both the primary condensation/cracking rate constant and the secondary condensation/cracking rate constant increase with the reaction temperature. It means that the lower reaction temperature is advantageous to increase the Distillate yield at the same reaction severity. Furthermore, a practical transformation method was presented to improve the suitability of this model. The comparison results indicated that this transformation method is available for the kinetic model in this research. Moreover, it can also be used for other lumping models similarly

Petrov S. - One of the best experts on this subject based on the ideXlab platform.

  • Conversion of organic matter in the carbonaceous medium in the supercritical water
    2020
    Co-Authors: Petrov S., Ibragimova D., Safiulina A., Tohidi Kalorazi B., Vakhin A., Okekwe R., Karalin E.
    Abstract:

    © 2017 Elsevier B.V. The work is based on the modeling of geothermal transformations of hydrocarbons in oil-bearing formations of deep horizons of the earth's crust - under abnormally high pressure, in the presence of aqueous fluid and carbonaceous substances. The pressure and temperature in the experiments are typical for water in the supercritical state. The regularities of the conversion of heavy oil in supercritical water and in the presence of finely dispersed caustobioliths and metal oxides were shown. Aquathermolysis in the presence of proton provides blockage of free radicals of high-molecular weight hydrocarbons and saturation of unsaturated hydrocarbons, produced by cracking reactions, and inhibiting of condensation reactions of aromatic macromolecules. The hydrogen protons also promote hydrogenation reactions in the crude oil. The regularities of changes of the component, structural-group, fractional and elemental compositions of heavy oil during the conversion under the above conditions were established, rheological characteristics of the initial crude oil and converted oil were studied as well. As a result of carrying out aquathermolysis in the supercritical water environment and in the presence of initiating additives, the high-molecular weight components of the initial crude oil were degraded with the formation of Light Distillate fractions, which were scarcely present in the initial crude oil. Thus, the conversion rate for various samples amounted to 18–29%. It resulted in the significant reduction in the viscosity of the converted oil, up to 96% compared to the initial crude oil

  • Geothermal conversion of organic matter in the carbonaceous medium of the presence of homogeneous oxidation catalysts
    2020
    Co-Authors: Lakhova A., Sitnov S., Tohidi B., Petrov S.
    Abstract:

    © SGEM2017 In this research the regularities of heavy oil conversion in supercritical water and the presence of finely dispersed caustobioliths and metal oxides were shown. The process of thermo-catalytic conversion was carried out in a closed reactor under temperature and pressure conditions, providing the transition of the aqueous phase in supercritical fluid. To investigate the selectivity of catalysts, different compositions of catalyst systems were prepared and studied for their effectiveness in the process of degradation of high-molecular hydrocarbon raw material. The conversion process of forming and initiating compounds, acting as a donor of a proton allows to block free radicals of high-molecular hydrocarbon and saturate the unsaturated hydrocarbons formed by cracking reactions. At the same time it helps to inhibit the reaction of consolidation of aromatic macromolecules that prevents the coke formation. The hydrogen protons also promote the hydrogenation reactions behavior in the crude oil. In accordance to the above, dispersed caustobioliths and active carbon were included in the composition of the initiation additives. Set of experiments of were carried out on conversion product, which enabled to follow the transformations of all components of the reaction medium under supercritical conversion conditions. The regularities of changes of the component, structural-group, fractional and elemental heavy oil compositions were discovered as a result of the conversion under the above conditions. The rheological characteristics of the crude oil and converted oil were studied. High molecular weight components of crude oil were destroyed with the formation of Light Distillate fractions as the result of aquathermolysis in the supercritical water conditions and with the presence of initiator additives. Such Light Distillate fractions are practically not presented in the crude oil. The conversion of various samples comes to ratio from 18 to 29%. The significant reduction in the viscosity of the converted oil is up to 96% compared to the crude oil

  • Aquathermolysis of heavy oil in the presence of supercritical water
    2019
    Co-Authors: Petrov S., Soldatova R., Lakhova A.
    Abstract:

    © Published under licence by IOP Publishing Ltd. The purpose of the work is to identify patterns of transformation of high-molecular components of super-heavy oil by hydrothermal-catalytic processes, namely in the presence of a supercritical state of water. The regularities of changes of the component, structural-group, fractional and elemental compositions of heavy oil during the conversion under the above conditions were established, rheological characteristics of the initial crude oil and converted oil were studied as well. As a result of carrying out aquathermolysis in the supercritical water environment and in the presence of carbonaceous substances, the high-molecular weight components of the initial crude oil were degraded with the formation of Light Distillate fractions, which were scarcely present in the initial crude oil