Patent ID: 8751167
Filing Date: 2014-06-10
Classification: G01N,G01R,Y10T

Abstract:
1. An apparatus for on-line concentration determination of at least one component in a liquid mixture flowing through an alkylation process, which liquid mixture is an acid catalyst for hydrocarbon conversion containing an unknown concentration of an acid, an acid-soluble-oil (ASO), and water, said apparatus comprising: an instrument configured for measuring a property of the liquid mixture; the instrument configured to have responsivities to concentrations of one of the acid, ASO, and water, substantially independent of the concentrations of the others of the acid catalyst, ASO, and water; an other instrument configured for measuring another property of the liquid mixture; the instruments configured to have mutually distinct responsivities to concentrations of the acid, ASO, and water; a temperature detector configured to generate temperature data for the liquid mixture; a model of responsivities to various concentrations of the acid, ASO, and water at various temperatures; a processor configured to capture data generated by the temperature detector and the instruments, and to use the data in combination with said model to determine a temperature compensated concentration of said one of the acid catalyst, said ASO, and said water, in said liquid mixture; a fluid flow path configured to convey the liquid mixture in a downstream direction from an acid catalyst stream in a hydrocarbon conversion process to the instrument; a separator configured to remove hydrocarbon present in a gas or liquid phase distinct from that of the liquid mixture; wherein said instrument, said other instrument, and said temperature detector, comprise a multi-channel spectrometer, having at least three channels.