Rapid determination of asphaltene content and device therefor

Details Rapid determination of asphaltene content and device therefor Rapid determination of asphaltene content and device therefor

G - Physics

01

N

73/55

G01N 21/25 (2006.01)

Patent

CA 1286521

ABSTRACT OF THE DISCLOSURE A method for determining an asphaltene content in a heavy hydrocarbon oil and a device therefor are disclosed. The method comprises measuring absorbances of a sample solution having dispersed therein asphaltene particles at two different wavelengths selected from the range of from about 300 to 1000 nm and obtaining an asphaltene content from the measured values utilizing a relationship between known asphaltene contents and absorbances. The device comprises a dip probe to be dipped in a sample solution or a flow cell in which a sammple solution is made to flow, a two-wavelength absorbance detector by which absorbances of the sample solution at two different wavelengths are detect- ed and converted to electrical current values, and a com- puting means for converting the current values into an asphaltene content. The method and the device realize automatic asphaltene determination on a large number of samples in a reduced time per sample with high precision.

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