High pressure solid–liquid phase equilibria in synthetic waxes

Combined Investigations of Fluid Phase Equilibria and Fluid–Solid Phase Equilibria in Complex CO2–Crude Oil Systems under High Pressure

“…In addition to other setups, a small high pressure view-cell is used for the direct observation of solid particles after their precipitation from crude oil. This high pressure microscopy cell (HPM), shown in Figure is presented in detail in a previous publication . Briefly, it is mainly composed of a stainless steel block fitting two transparent windows facing each other.…”

“…In an attempt to evaluate the phase transition visually even in dark oil systems, high-pressure microscopy (HPM) methods have been developed. − As the absorbance of a sample is directly proportional to the length of the light path. If one disposes the fluid in a thin layer between two transparent glass or sapphire windows it is possible to render the sample transparent enough so that one may assess the phases present through observation using a microscope.…”

Experimental investigation and thermodynamic modeling of wax disappearance temperature for n-undecane+n-hexadecane+n-octadecane and n-tetradecane+n-hexadecane+n-octadecane ternary systems

“…WDTs have been reported for some n-alkane ternary mixtures in literature [1,[20][21][22][23]. In the current work, WDTs of the systems n-undecane + n-hexadecane + n-octadecane and ntetradecane + n-hexadecane + n-octadecane are investigated using an in-house visual-based apparatus working under atmospheric pressure.…”

Experimental measurements and thermodynamic modeling ofwax disappearance temperature for the binary systems n -C 14 H 30 + n -C 16 H 34 , n -C 16 H 34 + n -C 18 H 38 and n -C 11 H 24 + n -C 18 H 38

“…Researchers not only have investigated the effect of different parameters on the WDT and WAT, but also proposed thermodynamic models to accurately predict the thermodynamic behavior of multi-component systems [6,9,12,[16][17][18][19][20][21]. For example, Wang et al [6] measured WAT and WDT of n-C 24 H 50 and n-C 36 H 74 in n-decane solutions both with and without wax inhibitors using light transmittance method.…”