The Industrialization Of Supercritical Fluid Extraction Heat Exchanger Device And Its Temperature Control System Design

This article fully studies and analyzes the current state of the industrial supercritical CO₂ fluid extraction plants made home and abroad, and the basic function of the supercritical extraction plants developed by our enterprise. It comprehensively analyzes the existing problems of the currently produced industrial supercritical extraction plants, and focus its study on a few key technologies in the heat exchange system of the industrial supercritical extraction plant such as the structure of the heat exchanger and the choice of its type, the optimized setting of the temperature control points and the auto temperature control. Following are the obtained result from the study.●The proper setting of the temperature detection and control points in the supercritical extraction plant enhances the Tightness and precision of the temperature detection, and lays the foundation for the realization of the effective auto control and the precision enhancement for the industrial supercritical extraction plant.●To select the structure type of the heat exchanger properly and to optimize the structure design of the heat exchanger enhances the comprehensive performance of the supercritical extraction plant to enable the plant to have relatively strong competitiveness in the market, and enables the operation cost of the plant to be reduced, thus broadening the market for the development of the plant.●The proper application of the PLC elements in the supercritical extraction plant enhances the control precision of the system, and the sophisticated control theory can be used to further increase the application fields of the plant.