G - Physics – 01 – N
Patent
G - Physics
01
N
73/55
G01N 21/31 (2006.01) G01N 15/06 (2006.01) G01N 33/28 (2006.01) G01N 15/00 (2006.01) G01N 21/85 (2006.01)
Patent
CA 1325528
ABSTRACT OF THE DISCLOSURE A method for determining a sludge content in a heavy hydrocarbon oil and a device therefor are disclosed. The method comprises measuring absorbances of a heavy hydrocarbon oil sample, having an oil film thickness selected form a range of from about 0.01 to 5 mm, at two different wavelengths selected from the visible light region of from 500 to 1000 nm and determining a sludge content of the sample oil by comparing two measured absorbances according to the relationship between known sludge contents and absorbances at the two wavelengths. The device comprises a light source, a cell for a sample oil, a two-wavelength absorbance detector containing two interference filters and two light-current transducers, and a computing means for converting the current values obtained into a sludge content. The method and device provide a means for rapid and precise determination of sludge contents in heavy hydrocarbon oils.
598833
Fukui Yukimasa
Nakai Sadao
Yamazoe Seigo
Cosmo Oil Co. Ltd.
Riches Mckenzie & Herbert Llp
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