Multistage extraction unit for animal and plant raw materials, and method and application thereof

Abstract

The invention relates to a multistage extraction unit for animal and plant raw materials, and a method and application thereof, belonging to the technical field of animal and plant extraction. The extraction unit comprises an extraction tank (1), a filtration membrane filter (2), a pulverizer (3) and a concentrated solution membrane separation device, wherein the extraction tank (1) is connected with the pulverizer (3) through a raw material delivery pipe (101), and connected with a feed port of the filtration membrane filter (2) through a first pump (4) via a pipeline; a filtrate outlet of the microfiltration membrane filter (2) is connected with a filtrate output pipe (201); and a concentrated solution outlet of the filtration membrane filter (2) is respectively connected with the extraction tank (1) through a concentrated solution return pipe (202) and connected with the concentrated solution membrane separation device through a concentrated solution delivery pipe (203). The extraction unit can pulverize the raw materials into fine powder and perform membrane separation extraction, has the advantages of high extraction efficiency and high yield, and is capable of obviously enhancing the concentration of the obtained filtrate, reducing the solvent consumption and lowering the production cost.

Description

technical field [0001] A multi-stage extraction device for animal and plant raw materials and its method and application belong to the technical field of animal and plant extraction. Background technique [0002] Extraction of animal and plant raw materials refers to the use of appropriate solvents or methods to extract and process active ingredients (the active ingredients can be dissolved in solvents) from animal and plant raw materials (all or a certain part). In the existing large-scale industrial production, the method of extracting active ingredients from animal and plant raw materials is to dry and compress the animal and plant raw materials to obtain flake raw materials, and spray the flake raw materials with solvent to obtain the extract. Alternatively, the animal and plant raw materials are crushed into centimeter-sized particles and added to a solvent (such as ethanol solution) for hot reflux extraction. When separating the solid-liquid of the extract, a centimete...

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Problems solved by technology

[0003] The applicant found in the research that the existing extraction device has the following problems: First, the yield of the active ingredient in the existing extraction device is low, the extraction efficiency is low, and it is difficult to extract the active ingredient in the plant by tableting or centimeter-level coarse crushing. Leaching into the solvent, and the method of spraying the solvent is difficult to fully extract, and the extraction efficiency of the obtained active ingredients is low

Secondly, although the existing technology involves the design of extracting plant raw materials using membrane separation devices, the permeate obtained by primary filtration is often separated and refined with a filter membrane with a smaller pore size to obtain specific chemical components (such as protein separation), but there is no help on how to increase the yield of active ingredients

Again, the applicant found that using the existing membrane extraction device, the obtained permeate has a low concentration and a large volume, which not only increases the cost of the solvent, but also increases the subsequent energy consumption for refining and concentrating the permeate.

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