Simultaneous distillation and extraction device and method for extracting volatile oil by using same

Abstract

The invention provides a simultaneous distillation and extraction device. The device comprises a distillation bottle, a solvent bottle, a heating device, a condensation system and a connecting pipeline. The device is characterized by further comprising a steam mixing system, wherein the steam mixing system comprises a lower cavity, an upper cavity and a middle pipe communicating with the lower cavity and the upper cavity; the condensation system is composed of a condensation pipe located in the lower cavity, a condensation box located on the outer side of the upper cavity and a water pipe realizing communication between the condensation pipe and the condensation box. the upper cavity is connected with the lower cavity through a small pipe; and a liquid collecting cavity is formed in the lower end of the lower cavity. According to the device, extraction time is greatly shortened, and the yield and quality of volatile oil are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of plant extraction; in particular, it relates to a plant volatile oil extraction device and method. Background technique [0002] Simultaneous distillation extraction (simultaneous distillation extraction) is mainly used in the analysis and extraction of raw materials containing volatile and semi-volatile components. This method can better extract volatile target components from complex raw materials, especially for volatile The extraction of sexual aroma components is particularly convenient. Simultaneous distillation and extraction generally use steam distillation and organic solvents to extract volatile target components in raw materials. The principle is as follows: the water vapor brings out the target component in the raw material, and then merges with the evaporated organic solvent vapor in the condenser tube, the organic solvent vapor extracts the target component from the water vapor, and the targ...

AI Technical Summary

Problems solved by technology

[0004] The simultaneous distillation extraction device and method of the prior art have the following technical deficiencies: first, water will be consumed rapidly along with distillation, and in order to prevent dry burning, the distillation has to be interrupted to add water, thereby resulting in a reduction in distillation efficiency

Second, through electric heating, the bottom of the retort is highly heated. With the extension of the distillation time, the raw materials are easy to agglomerate at the bottom. When the water in the retort is consumed, if the water is not replenished in time, the sample will be dry-burned, which will not only damage the sample It is also very prone to safety accidents

Third, the condensing device is set in the lower part of the steam mixing area, and there is a problem of asynchronous distillation and extraction, resulting in a low extraction rate of the target components

Fourth, the device as a whole is in a sealed state. When the air flow is large, the air pressure inside the device is likely to be unstable, posing a safety hazard

Sixth: The steam is not fully condensed

Seventh: The distillation time is long, the efficiency is not high, and the volatile components are easy to oxidize and deteriorate due to the long distillation time, which seriously affects the product quality

[0005] In order to solve some of the shortcomings in the above technical problems, the patent document "A Simultaneous Distillation and Extraction Device and Simultaneous Distillation and Extraction Method" (CN 108992960 A) improved the above-mentioned simultaneous distillation and extraction device to solve the problem of unstable air pressure inside the device. Safety hazards

But there are still the following technical defects: (1) Incomplete steam mixing and insufficient extraction; (2) Long distillation time and low yield; (3) The raw material is placed on the plug plate, and when the raw material is powder, the raw material will fall into the In the steam bottle; when the hole of the plug plate is too small, the hole of the plug plate is easily blocked by the raw material powder, causing the steam to evaporate upward from the second connecting pipe; when the raw material particles are large, even if the hole of the plug plate is not blocked, the water vapor will be affected Due to the resistance of the raw material, it is steamed upward from the relatively non-resistance second connecting pipe; the steam does not pass through the raw material or only partially passes through the raw material bottle, which seriously affects the distillation effect; therefore, this patent is not applicable to the extraction of powdered raw materials; (4) The solvent vapor containing the target object is cooled and returned to the extraction bottle again, and evaporated upward after heating, so that the target object is repeatedly heated in the device, causing the target object to be oxidized into other substances, and the product quality is still not guaranteed

Images