The ignition, combustion characteristics, and cenosphere formation of single droplets four vacuum residues (VRs) from different refineries with various asphaltene contents were studied experimentally. VRs suspended at the tip a silicon carbide fiber heated in air temperatures 973 1023 K, respectively, an electrically tube furnace. ignition behavior recorded using CCD camera, which enabled deter...

Sulfur chemical structures present in crude oil products such as petroleum asphaltenes, resins, and maltenes obtained from two different oils have been determined using X-ray absorption nearedge structure (XANES) spectroscopy. Maltenes are pentane soluble portions, resins are pentane insoluble and heptane soluble portions, and asphaltenes are heptane insoluble portions of crude oil. The sulfur ...

in this investigation, the mechanical properties of the blends of blown bitumen110/10, heavy vacuum slops (h.v.s), bitumen 60/70 penetration grade and isotactic polypropylene (ipp) were studied for the first time. our results showed that modulus varies non-linearly and at certain asphaltenes contents a peak appears. considering these phenomena it is revealed that in the absence of ipp, interact...

Abstract Carbonate acidization is the process of creating wormholes by injecting acid to increase reservoir permeability and oil production. Nevertheless, some oils are problematic with low asphaltene stability, which affects wormholing process. The interactions between acid, rock, lead acid-asphaltene sludge formation, reduces productivity injectivity. Neglecting this formation leads over pred...

The aggregation behavior of asphaltene in the toluene-hexane mixture is systematically investigated using experimental techniques such as optical microscopy and Fourier-transform infrared spectroscopy (FTIR) combined with molecular dynamics (MD) simulations. images various concentrations are processed to determine size aggregates. FTIR performed within our work order understand formation aggreg...