Indirect measurement of inclined sedimentation for ash in coal liquids at high temperature and pressure by x-ray photography

Vaidyanathan, K. R.; Henry, Joseph D.; Verhoff, F. H.

doi:10.1021/i100002a010

Cited by 6 publications

(1 citation statement)

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“…Ondeyka et al 3 and Valdyanathan et al 4 described an X-ray photographic technique to follow the settling of particles from coal-derived liquids diluted with solvent. The interface was photographed at certain time intervals during settling and settling curves, and settling rates were then deduced from the X-ray images.…”

Section: Introductionmentioning

confidence: 99%

Monitoring the Settling of Water−Solids−Asphaltenes Aggregates Using In-Line Probe Coupled with a Near-Infrared Spectrophotometer

Long

Dąbroś

2005

Energy Fuels

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Zone settling develops when bitumen emulsions are treated with aliphatic solvents at solventto-bitumen (S/B) ratios that are higher than a critical value. Near-infrared (NIR) spectroscopy is used in combination with an in-line fiber-optic diffuse transflectance probe to monitor the settling of the water-solids-asphaltenes aggregates in solvent-diluted bitumen. NIR spectra are obtained via the probe that is inserted in the settler, and the settling rate is calculated using the acquired NIR spectroscopic data. It was observed that a lighter aliphatic solvent leads to a much higher settling rate than a heavier aliphatic solvent at the same S/B dilution ratio. For the same solvent, a higher dilution ratio results in a higher settling rate.

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Section: Introductionmentioning

confidence: 99%