Heavy Petroleum Fractions
Mostrando 13-17 de 17 artigos, teses e dissertações.
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13. Modeling and simulation of a pseudo-two-phase gas-liquid column reactor for thermal hydrocracking of petroleum heavy fractions
This work presents a model to predict the behavior of velocity, gas holdup and local concentration fields in a pseudo-two-phase gas-liquid column reactor applied for thermal hydrocracking of petroleum heavy fractions. The model is based on the momentum and mass balances for the system, using an Eulerian-Eulerian approach. Using the k-epsilon model,fluid dyna
Brazilian Journal of Chemical Engineering. Publicado em: 2002-07
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14. Modelling and simulation of the hydrocracking of heavy oil fractions
This work presents a model to describe the behavior of the concentration of constituents of heavy fractions from petroleum during the hydrocracking process. An approximation based on pseudocomponents or lumps is adopted due to the complexity of the mixture. The system is modeled as an isothermal tubular reactor with an axial dispersion, where the hydrogen fl
Brazilian Journal of Chemical Engineering. Publicado em: 2000-03
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15. Potencial para aproveitamento alternativo de frações pesadas de petroleo
An analysis of the international oil market indicates an increasing offer and a reducing demand of heavy crude oils. On the other hand, the demand for light fuels like gasoline and diesel oil is continuosly increasing. The global environment concern is pushing the oil companies to develop new technologies and improve the existing ones in order to reduce the
Publicado em: 1997
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16. Modelagem e simulação da cinetica quimica do tratamento das frações pesadas do petroleo
This work is na effort to model and simulate the chemical kinetic that occurs in the treatment of the heavy fractions of petroleum to produce more valuable materials from it. The kinetic, that include thermal cracking, hydrodesulphurisation, hydrodenitrification, hydrodemetallation and hydrodeoxygenation, the last four catalytic, were studied as occurring in
Publicado em: 1997
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17. Cinetica e modelagem no reator de HDT
The reason for the hydrotreating of petroleum fractions is to remove sulfur, nitrogen, oxygen and heavy metal, in order to stabilize the fractions by hydrogenation of unsaturated compounds. This process has become extremely important to attend the growing demand of low impurity fuel oils that has been created by society s desire to improve the environment qu
Publicado em: 1995