A quality optimization control method for coix seed oil production based on real-time data feedback

Abstract

The application discloses a kind of based on real-time data feedback's coix seed oil production quality optimization control method, specifically related to carbon dioxide extraction and control optimization field, for solving the problems such as difficult to identify extraction front variation, flow distribution uneven and mass transfer efficiency decline in existing supercritical CO2 extraction process;By collecting extraction outlet pressure value, temperature value and target component concentration sequence fitting solubility parameter surface, and constructing solubility field distribution curve in the axial direction of extraction kettle, simultaneously inverse calculation mass transfer resistance field and flow velocity field, curvature analysis is carried out on solubility field to identify extraction front and calculate front distortion index, then response surface model is used to predict extraction rate decline time to trigger flow field reconstruction, axial reverse flow is executed by controlling CO2 flow direction switch valve, and the temperature of each heating zone is corrected according to the updated solubility field, so as to realize the dynamic optimization control of extraction process.

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