System and method for alkylation process analysis

摘要

A method and apparatus is provided for determining concentration of components in a liquid hydrocarbon mixture including hydrocarbons and water flowing through an alkylation process. A fluid flow path conveys the liquid continuously from the alkylation process through a first instrument configured for measuring a property of the liquid mixture, and having responsivities to concentration of the components, which are independent of the concentration of the water. A temperature detector generates temperature data for the liquid, and a second instrument measures another property of the liquid mixture. The instruments have mutually distinct responsivities to concentrations of the components. A processor captures data from the temperature detector and instruments, using the data with a model of responsivities of various concentrations of the components at various temperatures, to determine a temperature compensated concentration of the components while the liquid mixture flows continuously through the fluid flow path.

主权项

1. A method for on-line concentration determination of components in a liquid hydrocarbon mixture flowing through an alkylation process, which liquid hydrocarbon mixture includes an unknown concentration of components including hydrocarbons and water, said method comprising:
(a) supplying the liquid mixture through a separator in a downstream direction along a fluid flow path to an instrument in communication with the fluid flow path and configured to have responsivities to concentrations of one or more of the components of the liquid mixture; (b) supplying the liquid mixture to a temperature detector; (c) measuring a property of the liquid mixture using the instrument in communication with the fluid flow path while the liquid mixture is flowing continuously past the instrument along the fluid flow path; (d) generating temperature data for the liquid mixture using the temperature detector; (e) capturing, with a processor, data generated by the instrument and the temperature detector; and (f) determining with the processor, using the data in combination with a model of responsivities to various concentrations of the components at various temperatures, a temperature compensated concentration of components in the liquid mixture.