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Ultrasonic viscosity-reduction vacuum residue oil
Reviews in Chemical Engineering, 2022Abstract With the rapid development of economy, the demand for energy is increasing rapidly. And the output and processing amount of vacuum residue oil are also increasing year by year. The processing of vacuum residue oil is always a difficult problem in petrochemical industry.
Yi Pan +4 more
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Residual gases in vacuum systems
Vacuum, 1960Investigations of the gas composition in sealed-off high and ultra-high vacuum systems with the aid of the omegatron have shown that the gas evolution of the materials and interactions between the gases and the surfaces determine the kind of gases which are present. Such interactions are: absorption, chemical and exchange reactions.
A. KLOPFER, S. GARBE, W. SCHMIDT
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Transfer-hydrocracking of vacuum residue
Catalysis Today, 1996Abstract Hydrocracking of Arabian Heavy vacuum residue conducted in the presence of metal supported active carbon catalyst gave large amount of distillates (70%) with small hydrogen consumption. Especially, the Yalloum coal derived active carbon catalyst showed high cracking activity.
I. Nakamura, K. Fujimoto
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Phase behavior of Safaniya vacuum residue
Fluid Phase Equilibria, 2014Abstract The phase behavior of Safaniya vacuum residue (Saudi Arabia) from (200 to 520) K at atmospheric pressure was investigated and the phase states were determined from nanofiltered samples with pentane-asphaltene mass fractions w A between 0.048 and 0.555 based on joint treatment of heat capacity data from differential scanning calorimetry ...
Ala Bazyleva +3 more
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Colloidal nature of vacuum residue
Fuel, 1991Abstract Vacuum residues from Duri, Alaska North Slope, Ratawi, Oriente and Merey crude oils are observed to be colloidal dispersions of the asphaltenes (heptane insolubles) in the other molecules that make up the vacuum residue. It is suggested that molecules in the heptane-insoluble portion self-associate, and form solid-like particles that can be ...
David A. Storm +2 more
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Vacuum pyrolysis of automobile shredder residues
Resources, Conservation and Recycling, 2001Abstract A research program was undertaken to evaluate the overall performance of a vacuum pyrolysis process applied to the treatment of Automobile Shredder Residues (ASR). North American and European ASR samples were tested. Vacuum pyrolysis experiments were carried out in the temperature range of 496–536°C and a total pressure of approx.
C Roy, A Chaala
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