Ultrasonic-enhanced supercritical fluid extraction method

Abstract

The invention relates to the field of extraction, especially to an ultrasonic-enhanced supercritical fluid extraction method. An extraction device is adopted in the method. The extraction device comprises a supporting base, wherein a heater is arranged at the upper end of the supporting base; an extraction tank is arranged at the upper end of the heater; a connecting cover is arranged at the upperend of the extraction tank; a feeding port is formed in the upper end of the connecting cover; a motor is arranged on the side, close to the feeding port, of the upper end of the connecting cover; athreaded connecting pipe is arranged in front of a position, close to the motor, of the upper end of the connecting cover; a rotating shaft is arranged in the portion, located at the lower end of themotor, of the extraction tank; a fixing rod is arranged at the lower end of the rotating shaft; a liquid scraping rod is arranged on one end of the fixing rod; and a sealing cover is arranged at the upper end of the threaded connecting pipe. According to the ultrasonic-enhanced supercritical fluid extraction device disclosed by the invention, the interior of the extraction tank is convenient to clean, extraction liquid is prevented from pollution, incomplete extraction separation can be prevented, and the extraction device has better application prospects.

Description

technical field [0001] The invention relates to the field of extraction, in particular to an ultrasonically enhanced supercritical fluid extraction method. Background technique [0002] Ultrasound-enhanced supercritical fluid extraction is a new type of extraction and separation technology, which uses supercritical fluid, that is, a fluid in a thermodynamic state with a temperature higher than the critical temperature and a pressure higher than the critical pressure, as the extraction agent. Extract specific components from liquid or solid to achieve the purpose of separation. The characteristics of supercritical fluid extraction are: the extraction agent is gas at normal pressure and room temperature, and it is easy to separate from the raffinate phase and extraction group after extraction. It is especially suitable for the separation of natural substances. It can adjust the dissolving ability of superboundary fluid by adjusting pressure, temperature and introducing entrain...

AI Technical Summary

Problems solved by technology

Extract specific components from liquid or solid to achieve the purpose of separation. The characteristics of supercritical fluid extraction are: the extraction agent is gas at normal pressure and room temperature, and it is easy to separate from the raffinate phase and extraction group after extraction. It is especially suitable for the separation of natural substances. It can adjust the dissolving ability of superboundary fluid by adjusting pressure, temperature and introducing entraining agent, etc., and can introduce the extraction components to the desired product by gradually changing the density and temperature and pressure. Medium; The traditional ultrasonic-enhanced supercritical fluid extraction has some disadvantages. First, after the extraction is completed, the extraction liquid will remain on the inner wall of the device, which not only causes waste, but also troublesome cleaning, which is easy to cause pollution to the next drug. Second, the two different liquids The degree of separation is not easy to judge, resulting in the inability to completely separate the liquid. In order to solve the above problems, we proposed this ultrasonic enhanced supercritical fluid extraction device

Images