초록

Oxygenated hydrocarbons can be predicted within ±0.2% wt or better, using Raman NIR spectroscopy and multivariate analysis, with optional fiberoptics multistreaming. The resulting signal can be used to control concentration of such compounds in product to desired levels.

대표청구항 ▼

A process comprising: a) irradiating a sample of a liquid mixture consisting essentially of liquid hydrocarbons and comprising one or more oxygenated component to produce Raman scattered radiation emitted from the sample; b) collecting Raman scattered radiation emitted from the sample; c) dispersing

A process comprising: a) irradiating a sample of a liquid mixture consisting essentially of liquid hydrocarbons and comprising one or more oxygenated component to produce Raman scattered radiation emitted from the sample; b) collecting Raman scattered radiation emitted from the sample; c) dispersing or transforming the collected Raman scattered radiation from the sample into spectra with intensities corresponding to the concentration of components of the mixture; d) processing said spectra according to a regression model derived by multivariate analysis of Raman spectra, or a mathematical function of Raman spectra, of liquid mixtures containing known concentrations of one or more oxygenated hydrocarbons, to produce a control signal representative of the concentration of an oxygenated component in said mixture; e) controlling a process in response to said control signal.