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

An extraction device and volatile oil technology, which is applied in the field of plant volatile oil extraction devices, can solve problems affecting product quality, water consumption, and unstable air pressure, and achieve scientific and reasonable device settings, improved yield and quality, and balanced and constant pressure Effect

Pending Publication Date: 2021-09-28
LISHUI AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0040] The present invention has designed a kind of simultaneous distillation extraction device ( figure 1 ), including not only the distillation bottle 1, the solvent bottle 2, the heating device, the condensing system and connecting pipelines in the prior art, but also the steam mixing system.

[0041] Different from the prior art, the retort 1 designed by the present invention is gourd-shaped, the upper part is a small sphere, and the lower part is a large sphere. The top of the distillation bottle 1 is provided with a steam outlet 11, and the steam outlet is positioned at the top right of the gourd (that is, the small sphere on the top, such as figure 1 position shown), and with the longitudinal centerline of the hoist (AC, see image 3 ) (ie ∠AO 2 B) is 30-60 °, preferably 45 °; the bottom of the distillation bottle 1 (that is, the large sphere at the bottom, such as figure 1 The position shown) is provided with a steam inlet pipe 12 on the inner wall; steam enters the...

Embodiment 2

[0049] 1 Materials and methods

[0050] 1.1 Test material

[0051] In July 2020, bamboo leaves of yellow sweet bamboo were collected in Lishui, Zhejiang Province, washed and dried naturally in the shade, then dried in an oven at 40°C for 5 hours, crushed with a pulverizer, passed through a 40-mesh sieve, and then stored at -40°C in the fridge.

[0052] 1.2 Extraction of essential oil from bamboo leaves

[0053] In this experiment, the extraction of bamboo leaf volatile oil was carried out according to the experimental design in Table 1. The part of this experiment without special instructions was carried out according to the method of the prior art.

[0054] There are three types of devices involved: device one is the device in Example 1; device two is device one without the steam generating device and connecting pipe (that is, the steam inlet pipe of the retort is not connected to the steam generating device), and the steam inlet is closed with a plug. The inlet end of th...

Embodiment 3

[0076] In order to take into account the yield and quality of the volatile oil, this embodiment is used in the device designed in Example 1 according to the following method: the steam generating device is connected to the steam inlet pipe through the connecting pipe; the heating device and the steam generating device are turned on to make the distillation The liquid in the bottle is slowly heated to a slightly boiling state and kept in a slightly boiling state for 1 hour (the device and method are similar to the sample number A1-1 in Example 2); then turn off the steam generating device and only use the electric heating mantle to heat, and then turn on the distillation reflux Valve X3 and collection valve 52 (here is different from sample number A1-1 in embodiment 2), respectively place receiving bottle under distillation reflux valve X3 and collection valve 52, respectively receive the water phase and organic solvent phase of distillation reflux, until The liquid in the disti...

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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...

Claims

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Application Information

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IPC IPC(8): C11B9/02C11B3/12
CPCC11B9/027C11B9/025C11B3/12
Inventor 宋艳冬张俊红彭春菊潘心禾温莉娜俞飞叶根华
Owner LISHUI AGRI SCI
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