Chemistry: analytical and immunological testing – Determination of water – In petroleum oil – hydrocarbon oil or organic fluid
Patent
1998-12-09
2000-08-01
Snay, Jeffrey
Chemistry: analytical and immunological testing
Determination of water
In petroleum oil, hydrocarbon oil or organic fluid
436 60, 436139, 436171, 422 8209, 25033912, G01N 2159
Patent
active
060965533
ABSTRACT:
A computer implemented method for on-line determination of concentrations in an HF alkylation process catalyst stream containing HF acid, ASO, water and optionally an additive which suppresses the vapor pressure of HF acid. The method employs near-infrared spectroscopy coupled with chemometric data analysis. The data analysis uses a partial least squares regression technique which determines unknown concentrations based on spectral calibration data. In use, an absorbance spectrum of material is obtained, e.g., from a slipstream taken from the process alkylation catalyst stream, and the detected spectrum is mathematically analyzed with the aid of the computer to simultaneously predict concentration of HF acid, ASO, water and optionally the additive which suppresses the vapor pressure of HF acid.
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Eastman Alan Dan
Heald Randall L.
Randolph Bruce B.
Renfro Donald H.
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