Efficient solvent extraction system for fresh flower essential oil

Abstract

The utility model discloses an efficient solvent extraction system for fresh flower essential oil, which comprises an extraction tank, an evaporator, a condenser, an essential oil tank and a solvent storage tank connected with the extraction tank and the evaporator which are sequentially connected, and heating jackets are arranged on the extraction tank and the solvent storage tank; an atomizing nozzle communicated with a solvent storage tank is arranged at the top of the extraction tank, and a filter is arranged at a bottom outlet of the extraction tank; a liquid-phase outlet of the filter is connected with the evaporator; a solid-phase outlet is formed in the filter; a liquid inlet and a gas-phase outlet are formed in the top of the evaporator, a solvent outlet is formed in the bottom of the evaporator, the liquid inlet is connected with the liquid-phase outlet of the filter, the gas-phase outlet is connected with the condenser, and the solvent outlet is connected to a solvent storage tank. Under the heating condition, the mode that solvent soaking extraction and solvent spraying absorption are combined is utilized, volatile components in the extraction tank can be absorbed more sufficiently, meanwhile, the solubility of the volatile components in the solvent is improved, the purity of flower fragrance in fresh flowers can be effectively guaranteed, and the extraction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high -efficient solvent extraction system for fresh flower high volatile aromatic essential oil, belongs to plant extraction technical field. BACKGROUND

[0002] Plant essential oil extraction usually is the plant part (flower, leaf, wood chip, resin, root bark etc.) containing aromatic substance is put into the container, aromatic plant essential oil is extracted through distillation, pressing, solvent extraction, oil separation, dioxide becomes extraction or soaking process in the container, finally, through condensation or reduced pressure evaporation operation, impurity is separated, and finally the required aromatic plant essential oil is obtained. In the aromatic essential oil extraction process of plant flower, usually solvent extraction process is adopted, but due to the light fragrance of some plant flower aromatic substances, and the short molecular chain of aromatic substances, the volatility is strong, and the extraction efficiency is low through the current conventional solvent extraction process, therefore, it is very important to research and develop a solvent extraction device for light fragrance and strong volatile flower essential oil.

[0003] In the prior art, Chinese patent CN220926704U discloses a continuous essential oil extraction equipment, which sprays the organic solvent in the liquid storage chamber on the plant to be extracted after atomization by a spraying device, extracts the aromatic components in the plant, and the aromatic components are mixed in the organic solvent and run from high concentration to low concentration. Finally, it enters the liquid storage chamber through the filter plate, and the extraction is repeated 3-5 times until the extraction is completed. However, the atomized organic solvent comes from the organic solvent cooled by the condenser tube in the temporary storage tank. Although atomizing the organic solvent can increase the contact area between the organic solvent and the volatile substances, it cannot fully absorb the volatile components of some monoterpenes. At the same time, due to the low solubility at room temperature, the collection efficiency of volatile components is low.

[0004] In addition, Chinese patent CN216755448U also discloses a high-efficiency extraction device for fresh flower essential oil. The device extracts essential oil by heating the extraction bottle. When it is necessary to add material to the extraction bottle, the material is placed in the storage slot, then the fixed block is pressed to make the sliding rod slide down to the inside of the extraction bottle, so that the material in the storage slot enters the inside of the extraction bottle. Then the pressing block is pressed to make the pressing block drive the contact rod to slide in the sliding rod, and the contact rod drives the connecting rod to contact the turning plate in the storage slot, so that the turning plate rotates and pushes the material in the storage slot into the extraction bottle, thereby completing the feeding work. This is beneficial to preventing heat loss during feeding, and ensures the work efficiency. However, the device cannot effectively collect volatile monoterpenes. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of high-efficiency solvent extraction system of fresh flower essential oil, under heating condition, using the way of combination of solvent soaking extraction and solvent spray absorption, can make volatile component absorption in extraction tank more sufficient, improve the solubility of volatile component in solvent at the same time, can effectively guarantee the purity of flower fragrance in fresh flower, improve extraction efficiency.

[0006] The utility model discloses a kind of high-efficiency solvent extraction system of fresh flower essential oil, including extraction tank, evaporator, condenser and essential oil tank connected in turn, and solvent storage tank connecting extraction tank and evaporator, heating jacket is equipped on extraction tank and solvent storage tank;Atomizing nozzle is communicated with solvent storage tank on the top of extraction tank, filter is equipped on the bottom outlet of extraction tank;The liquid phase outlet of filter is connected with evaporator, solid phase outlet is equipped on filter;Liquid inlet and gas phase outlet are equipped on the top of evaporator, and solvent outlet is equipped on the bottom of evaporator, liquid inlet is connected with the liquid phase outlet of filter, gas phase outlet is connected with condenser, and solvent outlet is connected to solvent storage tank.

[0007] Absorber is equipped between the evaporator and condenser, and the absorber is filled with conjugated microporous polymer for adsorbing volatile essential oil.

[0008] Heat fan is equipped on the connecting pipeline of the evaporator and absorber.

[0009] The filter includes cylindrical shell and core in the shell, and the core is surrounded by filter screen to form a hollow cylindrical structure with both ends open, the bottom outlet of extraction tank is connected to the top of shell and corresponds to the top end opening of core, solid phase outlet is located at the bottom of shell and corresponds to the low end opening of core, and the liquid phase outlet of filter is located on the sidewall of shell, and the liquid phase outlet is provided with a filter pump between the evaporator.

[0010] Circulating water inlet and circulating water outlet are provided on the heating jacket of extraction tank.

[0011] Non-polar solvent inlet and non-polar solvent outlet are provided on the heating jacket of solvent storage tank.

[0012] The evaporator is a stirring heater.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0014] (1) The utility model uses solvent heating soaking extraction, and at the same time, the heated solvent in the extraction tank is sprayed for absorption, which can effectively improve the absorption efficiency and solubility of more volatile components in fresh flowers, and has better effects on improving the extraction efficiency of fresh flower fragrance and improving the purity of fresh flower fragrance.

[0015] (2) The utility model discloses a setting absorber between evaporimeter and condenser, and the gas phase formed by the extraction liquid evaporated by the evaporimeter enters the condenser through the absorber, and the essential oil (top note substance) more easily volatilized in the gas phase is absorbed by the absorber under the action of the hot air fan, so that the secondary extraction of the essential oil is realized, and the separation and collection of the top note substance and the remaining volatile components are realized.

[0016] (3) The utility model discloses a setting filter at the bottom outlet of the extraction tank, and the inner core of the filter corresponds to the bottom outlet, so that the flowers (extracted) carried by the extraction liquid can be collected, the extraction liquid is pumped and filtered by the pump and then sent to the evaporimeter, the flowers (extracted) form filter cake in the filter, and the filter cake can be taken out through the solid phase outlet of the filter, so that the continuous filtration of the extraction liquid in the extraction tank is realized, and the step of opening the extraction tank to take out the flowers (extracted) is reduced.

[0017] (4) The utility model discloses that the solvent stirred and heated by the evaporimeter is sent to the solvent storage tank for storage, so that the recycling of the extraction solvent is realized, and the process production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model.

[0019] Figure 2 It is a structural schematic view of the utility model. Figure 1

[0020] Wherein, 1 - extraction tank, 2 - evaporimeter, 3 - condenser, 4 - essential oil tank, 5 - solvent storage tank, 6 - heating jacket, 7 - atomizing nozzle, 8 - filter, 9 - liquid phase outlet, 10 - solid phase outlet, 11 - liquid inlet, 12 - gas phase outlet, 13 - solvent outlet, 14 - absorber, 15 - shell, 16 - core, 17 - pump. DETAILED DESCRIPTION

[0021] The utility model will be further and specifically explained in connection with the embodiments below, but the implementation mode of the utility model is not limited to this.

[0022] Embodiment:

[0023] The embodiment is a kind of high-efficiency solvent extraction system of fresh flower essential oil. The system is mainly aimed at the current low efficiency of fresh flower essential oil solvent extraction, monoterpenes volatile components cannot be fully absorbed and low solubility of volatile components in solvent, etc., so that the flower fragrance purity is difficult to guarantee.

[0024] Referring to Figure 1 ​As shown, the system mainly consists of an extraction tank 1, an evaporator 2, a condenser 3, an essential oil tank 4 and a solvent storage tank 5. The extraction tank 1 uses solvent soaking extraction and top solvent spray absorption to extract fresh flowers, so an atomizing nozzle 7 communicating with the solvent storage tank 5 is arranged at the top of the extraction tank 1. During extraction, the valve at the bottom outlet of the extraction tank 1 is closed, fresh flowers are added through the charging port at the top of the extraction tank 1, and then solvent is added to the extraction tank 1 so that the fresh flowers are soaked in the solvent. The solvent also comes from the solvent storage tank 5. In order to improve the solubility and absorption efficiency of the solvent for the flower essential oil, a heating jacket 6 is arranged for the extraction tank 1 and the solvent storage tank 5 in this embodiment. The solvent storage tank 5 can use a non-polar solvent as a heat source medium, and the temperature is controlled at 40-50°C. The extraction tank 1 can use circulating water to provide a heat source medium to continue to maintain the heating temperature of the solvent, and the temperature is also controlled at 40-50°C. During the extraction process and spray absorption, the use of heated solvent can increase the solubility of volatile essential oil and improve the extraction efficiency of fresh flowers.

[0025] A filter 8 is arranged at the bottom outlet of the extraction tank 1 in this embodiment, as shown in Figure 1 and Figure 2 The filter 8 includes a cylindrical shell 15 and a core 16 arranged in the shell 15. The core 16 is enclosed by a filter screen to form a hollow cylindrical structure with both ends open. The bottom outlet of the extraction tank 1 is connected to the top of the shell 15 and corresponds to the top end opening of the core 16. The solid phase outlet 10 of the filter 8 is located at the bottom of the shell 15 and corresponds to the low end opening of the core 16. The liquid phase outlet 9 of the filter 8 is located on the sidewall of the shell 15. An extraction pump 17 is arranged on the pipeline connecting the liquid phase outlet 9 and the evaporator 2 to separate the extraction liquid and the extracted flowers by extraction. The extraction liquid is sent to the evaporator 2 for treatment, and the separated flower filter cake can be taken out through the solid phase outlet 10. In actual operation, after extraction is completed, all inlet valves of the extraction tank 1 (including the charging port, the atomizing nozzle 7 and the solvent inlet) are opened, the valve at the bottom outlet of the extraction tank 1 is opened, the arc design at the bottom of the extraction tank 1 is used to make the flowers fall into the core 16 of the filter 8 together with the extraction liquid (the size of the core 16 can be designed according to actual conditions), the extraction pump 17 is opened, and the flowers are separated from the extraction liquid under the pressure of the extraction pump 17. The flowers form a filter cake in the core 16, and the extraction liquid is extracted to the evaporator 2.

[0026] The evaporator 2 of this embodiment is a stirring heater, as shown in Figure 1As shown, the top of the evaporator 2 is provided with a liquid inlet 11 and a gas phase outlet 12, the evaporator 2 is provided with a stirrer, the bottom of the evaporator 2 is provided with a solvent outlet 13, the heating can be performed by electric heating, the liquid inlet 11 is connected to the liquid phase outlet 9 of the filter 8 through a suction filter pump 17, the gas phase outlet 12 is connected to the condenser 3 through an absorber 14, and the solvent outlet 13 is connected to the solvent storage tank 5. After the extraction liquid enters the evaporator 2, the heating temperature of the evaporator 2 is controlled to be 40-60 DEG C, the flower fragrance oil in the extraction liquid is volatilized to form a gas phase under stirring, the gas phase enters the absorber 14 through the gas phase outlet 12, the absorber 14 is filled with a conjugated microporous polymer for adsorbing volatile components (top note substances), and the remaining gas phase continues to be sent to the condenser 3, after being cooled by circulating water (temperature 2-8 DEG C), the flower fragrance oil is formed and collected in the essential oil tank 4. In order to increase the adsorption of the absorber 14 to the volatile components (top note substances), a hot air fan can be arranged on the connecting pipeline between the evaporator 2 and the absorber 14, the adsorption effect of the conjugated microporous polymer to the top note substances is improved by heating the gas phase, and the conjugated microporous polymer after adsorption can obtain the required top note substances after desorption, which has a better adsorption and retention effect of fragrance than the existing active carbon adsorption top note method.

[0027] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, and any simple modification or equivalent change according to the technical essence of the present application to the above embodiment falls within the protection scope of the present application.

Claims

1. A high efficiency solvent extraction system of fresh flower essential oil characterized by: The device comprises an extraction tank (1), an evaporator (2), a condenser (3) and an essential oil tank (4) connected in sequence, and a solvent storage tank (5) connected with the extraction tank (1) and the evaporator (2), wherein a heating jacket (6) is arranged on the extraction tank (1) and the solvent storage tank (5); an atomizing nozzle (7) communicating with the solvent storage tank (5) is arranged on the top of the extraction tank (1), and a filter (8) is arranged on the bottom outlet of the extraction tank (1); a liquid phase outlet (9) of the filter (8) is connected with the evaporator (2), and a solid phase outlet (10) is arranged on the filter (8); a liquid inlet (11) and a gas phase outlet (12) are arranged on the top of the evaporator (2), and a solvent outlet (13) is arranged on the bottom of the evaporator (2), wherein the liquid inlet (11) is connected with the liquid phase outlet (9) of the filter (8), the gas phase outlet (12) is connected with the condenser (3), and the solvent outlet (13) is connected with the solvent storage tank (5).

2. A high efficiency solvent extraction system for fresh flower essential oil as claimed in claim 1 wherein: An absorber (14) is arranged between the evaporator (2) and the condenser (3), and the absorber (14) is filled with a conjugated microporous polymer for adsorbing volatile essential oil.

3. A high efficiency solvent extraction system for fresh flower essential oils as claimed in claim 2, wherein: A hot air fan is arranged on the connecting pipeline between the evaporator (2) and the absorber (14).

4. A high efficiency solvent extraction system for fresh flower essential oil according to claim 1, characterized in that: The filter (8) comprises a cylindrical shell (15) and a core (16) arranged in the shell (15), wherein the core (16) is surrounded by a filter screen to form a hollow cylindrical structure with both ends open, the bottom outlet of the extraction tank (1) is connected to the top of the shell (15) and corresponds to the top end opening of the core (16), the solid phase outlet (10) is located at the bottom of the shell (15) and corresponds to the lower end opening of the core (16), and the liquid phase outlet (9) of the filter (8) is located on the sidewall of the shell (15), and a suction pump (17) is arranged between the liquid phase outlet (9) and the evaporator (2).

5. A high efficiency solvent extraction system for fresh flower essential oil as claimed in claim 1 wherein: A circulating water inlet and a circulating water outlet are arranged on the heating jacket (6) of the extraction tank (1).

6. A high efficiency solvent extraction system for fresh flower essential oils as claimed in claim 1, wherein: A non-polar solvent inlet and a non-polar solvent outlet are arranged on the heating jacket (6) of the solvent storage tank (5).

7. A high efficiency solvent extraction system for fresh flower essential oil as claimed in claim 1 wherein: The evaporator (2) is a stirring heater.

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