Temperature controlled Soxhlet extractor

Abstract

The invention relates to a Soxhlet extractor, particularly relating to a temperature controlled Soxhlet extractor. The temperature controlled Soxhlet extractor comprises an external pipe and an internal pipe which are arranged in a sheathing manner; one end of the external pipe is provided with a temperature control liquid inlet; the other end of the external pipe is provided with a temperature control liquid inlet; a ground connecting end is arranged at the lower part of the external pipe; a branch pipe is arranged between the upper part of the internal pipe and the ground connecting end; a syphon pipe is arranged at the bottom of the internal pipe; a coiled pipe is arranged between the external pipe and the internal pipe; and the pipe body of the coiled pipe is positioned in the interlayer between the external pipe and the internal pipe. In the invention, the internal pipe is sheathed in the external pipe; the temperature control liquid circulates in the interlayer between the external pipe and the internal pipe to lead the internal pipe to keep a certain temperature; the coiled pipe is arranged between the external pipe and the internal pipe; the pipe body of the coiled pipe is arranged in the interlayer between the external pipe and the internal pipe; the condensed and refluxed solvent flows into the internal pipe after passing through the coiled pipe, thus the condensed solvent is controlled at a certain temperature through the temperature control liquid, so as to lead the extracting process to be performed at the required temperature.

Description

technical field [0001] The invention relates to a Soxhlet extractor, in particular to a temperature-controlled Soxhlet extractor. Background technique [0002] Soxhlet extraction is a classic method of extracting compounds from solid matter, and the extraction is achieved by a Soxhlet extractor. The method utilizes solvent reflux to continuously extract solid matter by pure solvent, which not only saves solvent but also has high extraction efficiency. The commonly used Soxhlet extractor structure is as figure 1 As shown, during extraction, the solid material to be extracted is crushed and placed in a filter paper sleeve, put into a Soxhlet extractor, and the round bottom flask connected with the extraction solvent is heated at the lower part. After the solvent boils, the steam rises with the branch pipe of the extractor. After being condensed by the condenser tube connected to it, it drops into the extractor and contacts with the extract for extraction. When the solvent le...

AI Technical Summary

Problems solved by technology

[0003] Affected by the temperature of the environment where the traditional Soxhlet extractor is placed, the heat of the solution in the chamber is continuously lost to the air, and the temperature decreases; at the same time, the bottom of the chamber is heated by the rising extraction solvent vapor, and the temperature rises

The above two factors work together to cause continuous changes in the extraction temperature, which affects the extraction efficiency and the stability of the extraction process.

Although the patent CN201500467U partially solves the problem of unstable extraction temperature, since the cavity is heated by the extraction solvent vapor, the extraction solvent is kept at a relatively high temperature, which is not suitable for the extraction of substances with unstable temperature

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