New Parameter Derived from the Hansen Solubility Parameter Used to Evaluate the Solubility of Asphaltene in Solvent

Abstract

In order to determine whether asphaltenes dissolved in certain solvents, the Hansen solubility parameters (HSPs) of asphaltenes and maltenes extracted from SZ36-1 vacuum residual were measured, and a new parameter Δδ tn was obtained by extending the HSP based on the results of asphaltene dissolution experiments. Δδ tn was calculated by the relative differences of the components of HSP between asphaltene and the solvent. The rationality of the Δδ tn was verified from three aspects: the selection of solvent that can dissolve asphaltene, dispersion of asphaltene in various solvents, and compatibility of asphaltenes and maltenes, which further proved that asphaltenes might be dissolved in maltenes. The Δδ tn can be well used to judge whether asphaltene can dissolve in a certain solvent.

Systematic Investigation of the Degradation Properties of Nitrile-Butadiene Rubber/Polyamide Elastomer/Single-Walled Carbon Nanotube Composites in Thermo-Oxidative and Hot Oil Environments

“…The Ra / Ro ( Figure 7 ) ratio is called the RED number, which reflects the relative energy difference. RED numbers less than 1.0 indicate high affinity, and progressively higher RED numbers indicate progressively lower affinity [ 41 , 42 , 43 ]. The RED between SWCNTs and NBR/PAE was calculated to be 0.42 using Equation (3).…”

Interfacial Polycondensation to Fabricate Polyurethane Microcapsules: Unraveling the Mechanism of Shell Formation and Achieving Desired Shell Thickness Based on Hansen Solubility Parameter Theory

“…The relationship between the solute, solvent, and membrane flux was thus established . Latnikova et al prepared microspheres by interfacial polymerization and used HSP theory to screen the compatibility of polymers and oil-phase solvents to explain the morphology of different microspheres with core–shell, porous, or inverse core–shell structures. , It can be seen that HSP theory has a high prediction accuracy in the dissolution and swelling of polymers with high accuracy in a variety of industries. − …”

Slurry-Phase Hydrogenation of Different Asphaltenes to Liquid Fuels on Dispersed MoS2 Nanocatalysts

“…Asphaltene is the fraction of crude oil that is insoluble in paraffin solvents such as n -pentane, n -hexane, or n -heptane but soluble in aromatic solvents such as benzene and toluene. , Asphaltene has considerable practical significance in the heavy oil hydrogenation process since it hinders the activity and life of hydrogenation catalysts. Asphaltene is the most recalcitrant and complex component of heavy oil and is regarded as the primary coke precursor in heavy oil conversion. − Therefore, the catalytic hydrogenation of asphaltene is a vital process that needs to be studied in detail. The hydrogenation reactivity of asphaltene depends on its structure .…”

“…Asphaltene is the most recalcitrant and complex component of heavy oil and is regarded as the primary coke precursor in heavy oil conversion. 14 − 16 Therefore, the catalytic hydrogenation of asphaltene is a vital process that needs to be studied in detail. The hydrogenation reactivity of asphaltene depends on its structure.…”