A supercritical extraction kettle for low-fat material extraction

Abstract

A supercritical extraction kettle for low-fat material extraction. A water bath cylinder is arranged on a bracket, an outer cylinder is arranged inside the water bath cylinder, an inner cylinder is arranged inside the outer cylinder, and an oil outlet pipe penetrating the bracket is arranged at the bottom of the outer cylinder. The upper end of the outer cylinder side wall is provided with an air inlet pipe, the extractant diffuses from top to bottom, the extracted oil is discharged from the oil outlet pipe, the top of the outer cylinder is provided with a top cover, and the protrusion at the lower end of the top cover is connected with the upper end of the thrust spring unit , the lower end of the thrust spring unit is connected with the thrust round platform, the outer cylinder is sealed between the top cover and the outer cylinder, the inner wall of the inner cylinder is smooth, the bottom of the inner cylinder is provided with the bottom cover of the inner cylinder, and the bottom cover of the inner cylinder is in contact with the inner wall of the outer cylinder There is an inner cylinder seal on the surface, the inner cylinder is filled with materials, and a filter layer is arranged between the bottom cover of the inner cylinder and the materials; the invention has simple structure, convenient operation, saves manpower and material resources, and can be extended and applied to the field of supercritical extraction.

Description

technical field [0001] The invention belongs to the technical field of physical separation devices or equipment, and in particular relates to a supercritical extraction kettle for low-fat material extraction. Background technique [0002] Supercritical fluid refers to when the substance is in a state above its critical temperature and critical pressure. At this time, the gas in this state is pressurized, and the gas will not be liquefied, but its density will increase. It has properties similar to liquid, while retaining the performance of gas . Supercritical fluid has the advantages of both gas and liquid. Its density is close to that of liquid, its solubility is strong, its viscosity is similar to that of gas, and its diffusion coefficient is much larger than that of ordinary liquid, which is conducive to mass transfer. In addition, supercritical fluid has zero surface tension, and it is easy to permeate and diffuse into the micropores of the extracted material. Therefor...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problem that in the extraction process of the existing supercritical extraction device, with the continuous reduction of the oil content of the raw material, the secondary loosening of the raw material structure occurs in the middle of the extraction, which leads to the rapid dissipation of the extraction agent and the reduction of the extraction efficiency. The disadvantage is to provide a supercritical extraction kettle for fat extraction of low-fat materials with reasonable design, simple structure, high extraction efficiency and convenient operation

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