Supercritical fluid extracting, spraying and granulating system and method

Abstract

The invention relates to a system for extracting and separately granulating in the field of nano-particles, and in particular relates to supercritical fluid extracting, spraying and granulating system and method. The system disclosed by the invention comprises a supercritical fluid transport unit, a supercritical fluid extracting unit, a supercritical fluid granulating unit, a supercritical fluid self-control unit and a real-time detection unit, wherein the outlet of the supercritical fluid transport unit is connected to the inlet of the supercritical fluid extracting unit; the outlet of the supercritical fluid extracting unit is connected to the inlet of the supercritical fluid granulating unit; the supercritical fluid granulating unit is connected to the real-time detection unit; and the supercritical fluid self-control unit is used for controlling operation of the supercritical fluid transport unit, the supercritical fluid extracting unit, the supercritical fluid granulating unit, the supercritical fluid self-control unit and the real-time detection unit. The system and the method disclosed by the invention are suitable for polar and non-polar effective ingredients, and have the advantages that the system and the method are simple and fast to operate, and simple in developing process.

Description

Technical field [0001] The present invention relates to a system for extracting and preparing nanoparticles used in the field of nanotechnology, and further to a supercritical fluid extraction spraying granulation system and method. Background technique [0002] Supercritical fluid: refers to a fluid whose temperature and pressure are both above the critical temperature and critical pressure, and it has the advantages of both gas and liquid. The typical area of ​​supercritical fluid extraction, ie 0.95<T r <1.2,1<P r <5, CO 2 It exhibits high compressibility in this area, and the density is sensitive to temperature or pressure changes. [0003] Supercritical Fluid Extraction (SFE, Supercritical Fluid Extraction): According to the principle of similar compatibility, it uses the relationship between the solubility of supercritical fluid and the density of the fluid, that is, the effect of fluid pressure and fluid temperature on its solubility. Especially near the critica...

AI Technical Summary

Problems solved by technology

[0010] In the existing technology, human measurement, sampling, and control of various valves and instruments are adopted, and it is impossible to efficiently and accurately monitor and operate the entire process of the process method, so the experiment accuracy is low, the time is long, and it is time-consuming and laborious

At the same time, for the detection of samples, real-time detection cannot be realized, resulting in the frequent accumulation of superfine powders at the bottom of the kettle, resulting in the inability to truly measure the particle size and particle size distribution of the prepared samples.

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