Rapid extraction method for realizing biomedical drug extraction

Abstract

The invention discloses a rapid extraction method for realizing biomedical drug extraction. The method comprises the following steps: S1, firstly, filling a soaking solution of a medicine into a tankbody, and introducing a supercritical carbon dioxide fluid into a breather pipe; S2, introducing a carbon dioxide fluid into the bottom of the tank body and then fully contacting the carbon dioxide fluid with a medicine extracting solution to selectively dissolve out the chemical components; S3, introducing a high-pressure carbon dioxide fluid containing an extract into a shell through a communicating pipe; S4, after the pressure is reduced, reducing the solubility of the carbon dioxide fluid sharply to separate out a solute, separating the solute and carbon dioxide gas automatically, and discharging the solute periodically from a discharge port in the bottom; wherein the communicating pipe is provided with a plurality of aeration ports, so that the contact area of the supercritical gas and the extracting solution is increased, the mixing rate of the supercritical gas and the extracting solution is increased, and the extraction effect is improved; and by arranging a safety mechanism, safe pressure relief is achieved, and the use safety of the equipment is improved.

Description

technical field [0001] The invention belongs to the field of extraction, in particular to a rapid extraction method for realizing the extraction of biomedical drugs. Background technique [0002] Using the difference in solubility or distribution coefficient of a substance in two immiscible (or slightly soluble) solvents, the substance is transferred from one solvent to another. After repeated extractions, most of the compounds are extracted; when extracting drugs, supercritical extraction is often used. Fluid is a state of matter that is neither gaseous nor liquid between gas and liquid. This substance can only exist when its temperature and pressure exceed the critical point. A supercritical fluid has a higher density, similar to a liquid, and its viscosity is closer to that of a gas. So supercritical fluid is a very ideal extraction agent. [0003] The existing supercritical extraction equipment has low mixing efficiency, unstable separation efficiency after extraction...

AI Technical Summary

Problems solved by technology

[0003] The existing supercritical extraction equipment has low mixing efficiency, unstable separation efficiency after extraction, and low efficiency, resulting in the need for multiple repeated extractions, which seriously affects production efficiency; the existing equipment only reduces the temperature of carbon dioxide through a general condensing tube, so that The extraction liquid is separated, the separation efficiency is slow, and during the operation of the cooling box, the cooling box vibrates, affecting the normal working efficiency of the cooling box, resulting in unstable operation of the cooling box, resulting in the occurrence of accessories falling off, and affecting its service life; and Generally, the working pressure is relatively high. The existing equipment is equipped with a pressure relief valve on the pipeline for pressure relief. The operation is cumbersome, and it is easy to cause misoperation, low safety performance, and easy to cause safety accidents.

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