Sectional type flower essential oil distillation device
Through the segmented distillation device, the method of one-stage distillation and two-stage distillation is adopted to solve the problems of aroma deterioration and component destruction caused by long distillation time of rose essential oil, and achieve fast and efficient separation of aromatic liquid and improvement of pure dew quality.
Patent Information
- Application Number
- CN202422714473.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-07
AI Technical Summary
In the prior art, the distillation time of rose essential oil is long, which causes the aroma of the essential oil and the hydrosol to deteriorate, the components to be destroyed, and the hydrosol to have an unpleasant odor.
A segmented distillation device is used, including a first-stage distiller and a second-stage distiller, for single-pass distillation and rectification respectively. Heating is performed through steam coils and spiral heating tubes to increase the evaporation rate, and an independent steam jacket is used for auxiliary heating to ensure heating uniformity and separation of the aromatic liquid.
It effectively shortens the distillation time, retains the aromatic components, avoids the degradation of the quality of essential oils and hydrosols, ensures the pure aroma of the hydrosol, and avoids the generation of unpleasant odors.
Smart Images
Figure CN223422642U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flower essential oil extraction, in particular to a device for segmented distillation of flower essential oil. Background Art
[0002] Flower essential oils are concentrates extracted from various flowers, including rose essential oil, rosemary essential oil, chamomile essential oil, etc. Each essential oil is deeply loved by the public for its unique properties and benefits. Among the many flower essential oils, rose essential oil is the most widely known.
[0003] In the prior art, when extracting rose essential oil, rose flowers containing volatile components are co-distilled with purified water, so that the volatile components are distilled out together with the water vapor. After condensation, the distillate enters a separator, and then is separated from the oil and water to collect the rose essential oil. The distillate is then re-distilled and circulated to a still for further distillation, cooling, and oil-water separation until the extraction is completed.
[0004] The above-mentioned traditional distillation method has the following technical defects in actual distillation:
[0005] The distillation time is long, generally 7-8 hours. During this process, the roses are repeatedly heated and the residue is distilled back, which causes the aroma of the essential oil and hydrosol to deteriorate and the ingredients to be destroyed. As a result, the appearance and ingredient quality of the rose essential oil cannot meet industry standards. At the same time, the hydrosol obtained has an unpleasant smell similar to "rotten sweet potato". Utility Model Content
[0006] The purpose of the utility model is to provide a device for segmented distillation of fresh flower essential oils, which can effectively shorten the distillation time, thereby effectively reducing the degree of deterioration of the aroma of the essential oils and hydrosols and the destruction of the components, while also ensuring the purity of the aroma of the hydrosols and effectively avoiding the unpleasant odor of the hydrosols similar to that of "rotten sweet potatoes".
[0007] The purpose of this utility model is achieved through the following technical solutions:
[0008] A device for distilling flower essential oil in a segmented manner comprises a first-stage distiller, a second-stage distiller connected to the liquid outlet end of the first-stage distiller, and an intermediate tank connected to the second-stage distiller; an essential oil collection pipe is provided at the top end of the intermediate tank, and a pure dew collection pipe is provided at the bottom end of the intermediate tank;
[0009] The first stage distiller comprises a first stage distillation tank, a first stage condenser connected to the gas outlet end of the first stage distillation tank, and a first stage aromatic liquid collecting pipe connected to the liquid outlet end of the first stage condenser;
[0010] The two-stage distiller comprises a two-stage distillation tank, a two-stage condenser connected to the gas outlet end of the two-stage distillation tank, and a two-stage aromatic liquid collecting pipe connected to the liquid outlet end of the two-stage condenser.
[0011] Preferably, a steam coil is provided at the lower part of the first section of the distillation tank, a plurality of air outlet holes are provided at the bottom end of the steam coil, and an air inlet end of the steam coil is provided outside the first section of the distillation tank; a first steam jacket is provided on the side wall of the first section of the distillation tank.
[0012] Preferably, a spiral heating tube is provided at the lower inner portion of the second-stage distillation tank, and the air inlet and outlet ends of the spiral heating tube are both located outside the second-stage distillation tank; a second steam jacket is provided on the side wall of the second-stage distillation tank.
[0013] Preferably, the first steam jacket and the second steam jacket each comprise two independent upper and lower jackets.
[0014] Preferably, the liquid outlet end of the second-stage aromatic liquid collecting pipe passes through the side wall of the intermediate tank and is provided with an oil-water separator.
[0015] Preferably, the liquid outlet end of the oil-water separator faces directly upward.
[0016] Preferably, a slag discharge pipe is provided at the bottom end of the first-stage distillation tank; and a flower water discharge pipe is provided at the bottom end of the second-stage distillation tank.
[0017] Preferably, a hydrosol storage tank is provided at the liquid outlet end of the hydrosol collecting pipe.
[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0019] By setting up a single-stage distiller including a single-stage distillation tank, a single-stage condenser, and a single-stage aromatic liquid collecting pipe, flowers can be distilled in a single pass. The distillation time of this section is short, which effectively retains the aromatic components and essential oils in the flowers, avoids long-term distillation of the flowers, which destroys the flower components and affects the aroma of the product (too long distillation time causes the essential oil and hydrosol to have an unpleasant sweet potato smell); by setting up a two-stage distiller including a second-stage distillation tank, a second-stage condenser, and a second-stage aromatic liquid collecting pipe, the first-stage aromatic liquid can be distilled, on the one hand, the flower essential oil in the first-stage aromatic liquid is completely separated, and on the other hand, impurities and foreign flavors in the first-stage aromatic liquid are evaporated and removed, thereby improving the quality of the hydrosol. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic cross-sectional view of the embodiment 1 in the front view direction;
[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the steam coil in the top view;
[0022] Figure 3 for Figure 1 Schematic diagram of the oil-water separator from a top-down perspective;
[0023] Figure: 1 - first distillation tank, 2 - first condenser, 3 - first aromatic liquid collection tube, 4 - second distillation tank, 5 - second condenser, 6 - second aromatic liquid collection tube, 7 - intermediate tank, 8 - essential oil collection tube, 9 - hydrolate collection tube, 10 - steam coil, 11 - spiral heating tube, 12 - oil-water separator, 13 - residue discharge tube, 14 - flower water discharge tube, 15 - hydrolate storage tank. DETAILED DESCRIPTION
[0024] Example 1
[0025] A device for distilling fresh flower essential oil in stages, as shown in the figure, comprises a first distillation device, a second distillation device connected to the liquid outlet end of the first distillation device, and an intermediate tank 7 connected to the second distillation device; the top end of the intermediate tank 7 is provided with an essential oil collection tube 8, and the bottom end of the intermediate tank 7 is provided with a hydrolate collection tube 9; as shown in the figure, the first distillation device comprises a first distillation tank 1, a first condenser 2 (prior art) connected to the gas outlet end of the first distillation tank 1, and a first aromatic liquid collection tube 3 connected to the liquid outlet end of the first condenser 2; the second distillation device comprises a second distillation tank 4, a second condenser 5 (prior art) connected to the gas outlet end of the second distillation tank 4, and a second aromatic liquid collection tube 6 connected to the liquid outlet end of the second condenser 5. Further, as shown in the figure, the bottom end of the first distillation tank 1 is provided with a residue discharge tube 13; the bottom end of the second distillation tank 4 is provided with a flower water discharge tube 14. Figure 1 Figure 1 Figure 1
[0026] Further, as shown in the figures, Figure 1 and Figure 2 the lower part of the first distillation tank 1 is provided with a steam coil 10, and the bottom end of the steam coil 10 is provided with a plurality of gas outlet holes. As shown in the figure, the gas inlet end of the steam coil 10 is arranged outside the first distillation tank 1; the sidewall of the first distillation tank 1 is provided with a first steam jacket (prior art, not shown in the figure), when heating, steam is directly filled into the interlayer of the first steam jacket, and the steam condenses into droplets during heating, therefore a liquid discharge port is arranged at the bottom end of the first steam jacket to facilitate the discharge of the droplets (prior art, not shown in the figure). Figure 1
[0027] Further, the lower part of the second distillation tank 4 is provided with a spiral heating tube 11 (steam is introduced into it to achieve the purpose of heating), as shown in the figure, Figure 1 As shown, the air inlet and outlet ends of the spiral heating tube 11 are both located outside the second-stage distillation tank 4. A second steam jacket is provided on the sidewall of the second-stage distillation tank 4, with the same structure and operating principle as the first steam jacket. Furthermore, in actual implementation, to enable independent steam heating of the upper and lower portions of the first-stage distillation tank 1 and the second-stage distillation tank 4, the first and second steam jackets each comprise two separate upper and lower jackets, each capable of independent steam filling and equipped with independent exhaust ports.
[0028] Working Principle: Roses (this utility model uses roses as an example to illustrate the working principle, but this utility model is not only applicable to roses, but also to flowers such as chamomile) and water are added to a first-stage distillation tank 1 in a certain proportion. Steam is then introduced into the air inlet of the steam coil 10. Steam is emitted from different air outlets, creating a turbulent effect, ensuring uniform steam distribution and uniform heating of the material. The steam in the steam coil 10 heats the material, greatly increasing the evaporation rate of the aromatic liquid (double the rate of traditional distillation). At the same time, auxiliary heating is provided by steam in the jacket below the first steam jacket, which effectively promotes uniform steaming of the flowers during the first stage of distillation. The first stage distillation temperature is 96°C, the distillation time is 3-4 hours, and the evaporation flow rate is 3-4 L / min.
[0029] The steam from the first distillation is condensed in a first condenser 2 to produce a first aromatic liquid. After the first aromatic liquid is introduced into the second distillation tank 4, it is heated by the steam in the spiral heating tube 11, greatly increasing the evaporation rate of the first aromatic liquid. At the same time, the steam in the upper and lower jackets of the second steam jacket is used for auxiliary heating to ensure that the aromatic liquid is heated to a uniform temperature. The second distillation temperature is 85-96°C, the distillation time is 2 hours, and the evaporation flow rate is 8-10L / min. The second distillation is a residue-free distillation (traditional distillation is residue distillation), which can be used to rectify the first aromatic liquid. On the one hand, it completely separates the flower essential oils in the first aromatic liquid, and on the other hand, it evaporates and removes impurities and odors in the first aromatic liquid, thereby improving the quality of the pure water.
[0030] Finally, the second-stage aromatic liquid obtained by the second-stage distillation is introduced into the intermediate tank 7, and the essential oil and the pure dew are collected through the essential oil collection pipe 8 and the pure dew collection pipe 9 respectively.
[0031] The utility model has a short first-stage distillation time, which is 3-4 hours shorter than the traditional distillation method. Generally speaking, the longer the distillation time, the lower the quality and aroma of rose oil and hydrosol. The second-stage distillation (i.e., rectification) can effectively remove impurities, foreign matter and sediment in the hydrosol, improving the quality of the hydrosol.
[0032] The utility model uses a segmented distillation device for distillation, firstly distilling flowers through a first-stage distillation, and then rectifying a section of aromatic liquid through a second-stage distillation, which can reduce the wax components in the essential oil, retain the aromatic components in the flowers and the essential oil content in the pure water, and avoid the traditional double distillation method. Repeated evaporation and separation cycles that consume the essential oil in the rose pure water and rose residue and cause the quality of the essential oil and the pure water to deteriorate.
[0033] Example 2
[0034] On the basis of Example 1, Figure 1 and Figure 3 As shown, the liquid outlet of the second-stage aromatic liquid collecting pipe 6 passes through the side wall of the intermediate tank 7 and is provided with an oil-water separator 12. The existing oil-water separator 12 is provided with a distributor. By making the liquid outlet of the oil-water separator 12 face upward, the liquid can be surged, which is convenient for the separation of essential oils. Furthermore, the liquid outlet of the oil-water separator 12 faces upward. Further, as Figure 1 As shown, a pure dew storage tank 15 is provided at the liquid outlet end of the pure dew collecting pipe 9 to facilitate storage of the pure dew.
Claims
1. A device for segmented distillation of fresh flower essential oil, characterized in that: The invention comprises a first-stage distiller, a second-stage distiller connected to the liquid outlet end of the first-stage distiller, and an intermediate tank (7) connected to the second-stage distiller; an essential oil collecting pipe (8) is provided at the top end of the intermediate tank (7), and a pure dew collecting pipe (9) is provided at the bottom end of the intermediate tank (7); The one-stage distiller comprises a one-stage distillation tank (1), a one-stage condenser (2) connected to the gas outlet end of the one-stage distillation tank (1), and a one-stage aromatic liquid collecting pipe (3) connected to the liquid outlet end of the one-stage condenser (2); The two-stage distiller comprises a two-stage distillation tank (4), a two-stage condenser (5) connected to the gas outlet end of the two-stage distillation tank (4), and a two-stage aromatic liquid collecting pipe (6) connected to the liquid outlet end of the two-stage condenser (5).
2. A device for segmented distillation of fresh flower essential oil according to claim 1, characterized in that: A steam coil (10) is provided at the lower portion of the first-stage distillation tank (1), a plurality of air outlet holes are provided at the bottom end of the steam coil (10), and an air inlet end of the steam coil (10) is provided outside the first-stage distillation tank (1); and a first steam jacket is provided on the side wall of the first-stage distillation tank (1).
3. A device for segmented distillation of fresh flower essential oil according to claim 2, characterized in that: A spiral heating tube (11) is provided at the lower inner portion of the second-stage distillation tank (4), and the air inlet and outlet ends of the spiral heating tube (11) are both located outside the second-stage distillation tank (4); a second steam jacket is provided on the side wall of the second-stage distillation tank (4).
4. A device for segmented distillation of fresh flower essential oil according to claim 3, characterized in that: The first steam jacket and the second steam jacket each include two independent upper and lower jackets.
5. The device for segmented distillation of fresh flower essential oil according to claim 1, wherein: The liquid outlet end of the second-stage aromatic liquid collecting pipe (6) passes through the side wall of the intermediate tank (5) and is provided with an oil-water separator (12).
6. The device for segmented distillation of fresh flower essential oil according to claim 5, characterized in that: The liquid outlet end of the oil-water separator (12) faces upward.
7. The device for segmented distillation of fresh flower essential oil according to claim 1, characterized in that: The bottom end of the first-stage distillation tank (1) is provided with a slag discharge pipe (13); the bottom end of the second-stage distillation tank (4) is provided with a flower water drainage pipe (14).
8. The device for segmented distillation of fresh flower essential oil according to claim 1, wherein: A hydrosol storage tank (15) is provided at the liquid outlet end of the hydrosol collecting pipe (9).