Millet grease removal and recovery device
By using CO2 high-pressure storage tanks and supercritical extraction technology, the problem of rancidity in millet porridge during storage has been solved, achieving effective removal and recovery of oils, extending the storage period and improving product circulation.
Patent Information
- Application Number
- CN202520271738.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-20
AI Technical Summary
Traditional instant millet porridge is prone to developing a rancid taste during storage, has a short shelf life, and poor product circulation.
The device consists of a CO2 high-pressure storage tank, an oil removal tank, a supercritical rice container, and an oil collection tank. It uses supercritical CO2 solvent to extract oil from millet and separates and recovers the oil through a pressure controller and a flow meter.
It effectively prevents millet porridge from developing a rancid taste due to fat oxidation, extends its shelf life, improves product circulation, and enables the recycling of CO2 solvent, reducing usage costs.
Smart Images
Figure CN223886179U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to millet deep processing device technical field, especially a kind of millet oil removal and recovery device. BACKGROUND
[0002] China is a millet production power, and millet production is very rich. As a kind of coarse grain, millet does not need to be processed too much, avoiding the harm caused by fine processing. Moreover, millet has high nutritional value, and is balanced in nutrition, containing many main nutrients needed by human body, and has been paid attention by scientists. The traditional porridge cooking method takes a long time, which is incompatible with the current fast-paced life and the trend of saving. However, millet contains 2.0-3.0% of fat, and the main fatty acids in millet are linoleic acid, oleic acid, linolenic acid, palmitic acid, stearic acid and arachidonic acid, and unsaturated fatty acids account for 85.54% of the total amount of fatty acids. Therefore, during the storage of instant millet porridge, fat oxidation occurs easily, resulting in a short shelf life.
[0003] Therefore, how to design a millet oil removal and recovery device can effectively remove and recover the oil in millet to prevent instant millet porridge from having a rancid smell due to fat oxidation, effectively extend the storage period of instant millet porridge, and improve the circulation of products is a problem that needs to be solved by those skilled in the art. SUMMARY
[0004] Therefore, the utility model provides a kind of millet oil removal and recovery device, to solve the technical problems that the above-mentioned traditional instant millet porridge product is prone to rancid smell, short storage period and poor product circulation.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] The utility model provides a kind of millet oil removal and recovery device, comprising:
[0007] The tank opening of the CO2 high-pressure tank is provided with a pressure reducing valve;
[0008] The oil removal tank is provided with a rice bucket inlet and outlet; the outlet of the pressure reducing valve is connected to the inlet of the oil removal tank through a first conveying pipe to convey CO2 solvent into the inner cavity of the oil removal tank;
[0009] The supercritical rice bucket is filled into the inner cavity of the oil removal tank from the rice bucket inlet and outlet;
[0010] The oil collection tank is connected to the outlet of the oil removal tank through a second conveying pipe to collect millet oil;
[0011] a first pressure controller and a second pressure controller; the first pressure controller is installed on the first conveying pipe to control the extraction pressure of the oil removal tank; and the second pressure controller is installed on the second conveying pipe to reduce the pressure of the CO2 solvent and the millet oil mixture and convey them into the oil collection tank.
[0012] The millet oil removal and recovery device of the utility model uses the CO2 high-pressure storage tank to store CO2 solvent, and the pressure reducing valve is used to control the output of the CO2 solvent. The first pressure controller is used to adjust and control the extraction pressure of the oil removal tank, so that the CO2 solvent is stabilized at the supercritical pressure. The supercritical millet barrel is used to store millet particles. The millet particles in the supercritical millet barrel are fully contacted with the CO2 solvent in the oil removal tank for extraction and oil removal. The second pressure controller is used to control the CO2 solvent and the millet oil mixture to be conveyed into the oil collection tank through the second conveying pipe. After pressure reduction, the CO2 solvent can be separated from the millet oil, so that the millet oil is concentrated and recovered and stored in the oil collection tank. The utility model can effectively remove and concentrate the oil in the millet, avoid the occurrence of the unpleasant smell of the instant millet porridge due to fat oxidation, prolong the storage period of the instant millet porridge, and simultaneously recover the millet oil which can be individually sealed and packaged as a material bag to prolong the storage period and improve the circulation of the product.
[0013] As a further improvement of the above technical solution, the oil removal tank is provided with a sealing cover for sealing the inlet and outlet of the millet barrel.
[0014] The above technical solution has the beneficial effect that the sealing cover is used to seal the inlet and outlet of the millet barrel, so as to ensure the stability of the high-pressure environment for extraction and oil removal in the oil removal tank.
[0015] As a further improvement of the above technical solution, the utility model further comprises a first flow meter and a second flow meter; the first flow meter is installed on the first conveying pipe to measure the output of the CO2 solvent; the outlet of the oil collection tank is connected to the pipeline between the first flow meter and the first pressure controller through a third conveying pipe; and the second flow meter is installed on the third conveying pipe to measure the return amount of the CO2 solvent.
[0016] The beneficial effects of the above technical solution are: the first conveying pipe, the deoiling tank, the second conveying pipe, the oil collecting tank and the third conveying pipe are sequentially connected to form a CO2 solvent circulation loop; the flow meter one is used for measuring the output amount of the CO2 solvent; in the actual extraction process, the pressure controller one stabilizes the high-pressure CO2 solvent in the deoiling tank at a supercritical pressure; after the extraction is completed, the pressure controller two opens the second conveying pipe to convey the CO2 solvent and the millet oil mixture to the oil collecting tank under reduced pressure; the CO2 solvent after being reduced in pressure becomes a gas and is separated from the millet oil; the millet oil remains in the oil collecting tank; the gaseous CO2 solvent returns to the first conveying pipe through the third conveying pipe; the flow meter two is used for measuring the return amount of the CO2 solvent; according to the loss amount of the CO2 solvent, the decompression valve can be opened to supplement the CO2 solvent for the next deoiling treatment.
[0017] As a further improvement of the above technical solution, the decompression valve is an electric control decompression valve.
[0018] As a further improvement of the above technical solution, a controller is further included, and the controller is electrically connected to the flow meter one, the flow meter two and the decompression valve.
[0019] The beneficial effects of the above technical solution are: the flow meter one and the flow meter two can feed back the measured CO2 solvent flow to the controller; and the controller can control the opening and closing state of the decompression valve according to the output amount and the return amount of the CO2 solvent.
[0020] As a further improvement of the above technical solution, the pressure controller one and the pressure controller two are both pressure regulating valves.
[0021] As a further improvement of the above technical solution, the controller is electrically connected to the pressure controller one and the pressure controller two.
[0022] As a further improvement of the above technical solution, a heating jacket is further included, and the heating jacket is sleeved outside the deoiling tank to control the extraction temperature in the inner cavity of the deoiling tank.
[0023] The beneficial effects of the above technical solution are: the heating jacket is used for controlling the extraction temperature; and the CO2 solvent in the supercritical state can be regulated and controlled through the cooperation of the heating jacket, the pressure controller one, the pressure controller two and the decompression valve.
[0024] As a further improvement of the above technical solution, an oil outlet is formed on the oil collecting tank.
[0025] The beneficial effects of the above technical solution are: the oil outlet can conveniently take out the millet oil from the oil collecting tank.
[0026] According to the above technical solution, compared with the prior art, the millet oil removal and recovery device has the following advantages and beneficial effects:
[0027] 1. The physical method of supercritical CO2 solvent extraction is used to remove oil in millet, which can be used in instant millet porridge production, prevents the instant millet porridge from producing halitosis due to oxidation during storage; the oil tank is used to recover millet oil, which can be packaged independently as instant millet material, retains the nutrients of millet and realizes long-term storage of instant millet porridge.
[0028] 2. The millet oil removal and recovery device can realize recycling of CO2 solvent and reduce the use cost of CO2 solvent. BRIEF DESCRIPTION OF DRAWINGS
[0029] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by the provided drawings without creative labor for those skilled in the art.
[0030] Fig. 1 The present application discloses a millet oil removal and recovery device, which comprises a CO2 high-pressure storage tank, a deoiling tank, an ultra-supercritical rice loading barrel, an oil collecting tank, a pressure controller one, a pressure controller two, a flow meter one and a flow meter two.
[0031] Fig. 2 The present application discloses a millet oil removal and recovery device, which comprises a CO2 high-pressure storage tank, a deoiling tank, an ultra-supercritical rice loading barrel, an oil collecting tank, a pressure controller one, a pressure controller two, a flow meter one and a flow meter two.
[0032] In the figure: 1, CO2 high-pressure storage tank; 11, pressure reducing valve; 2, deoiling tank; 21, sealing cover; 22, first conveying pipe; 23, second conveying pipe; 24, third conveying pipe; 3, ultra-supercritical rice loading barrel; 31, barrel body; 32, supporting hoop; 4, oil collecting tank; 5, pressure controller one; 6, pressure controller two; 7, flow meter one; 8, flow meter two; 9, heating jacket. DETAILED DESCRIPTION
[0033] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.
[0034] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0035] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.
[0036] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0037] According to the utility model embodiment, as shown in Figs. 1-2 A millet oil removal and recovery device, comprising: a CO2 high-pressure storage tank 1, an oil removal tank 2, a supercritical millet loading barrel 3, an oil collection tank 4, a pressure controller one 5 and a pressure controller two 6.
[0038] The CO2 high-pressure storage tank 1 is provided with a pressure reducing valve 11 at the tank opening. The oil removal tank 2 is provided with a millet barrel inlet and outlet. The outlet of the pressure reducing valve 11 is connected to and communicates with the inlet of the oil removal tank 2 through a first conveying pipe 22 to convey CO2 solvent into the inner cavity of the oil removal tank 2. The supercritical millet loading barrel 3 is loaded into the inner cavity of the oil removal tank 2 from the millet barrel inlet and outlet. The inlet of the oil collection tank 4 is connected to and communicates with the outlet of the oil removal tank 2 through a second conveying pipe 23 to collect millet oil. The pressure controller one 5 is installed on the first conveying pipe 22 to control the extraction pressure in the inner cavity of the oil removal tank 2. The pressure controller two 6 is installed on the second conveying pipe 23 to reduce the pressure of the CO2 solvent and millet oil mixture and convey it into the oil collection tank 4.
[0039] The device for removing and recycling millet oil of the embodiment uses CO2 solvent stored in the CO2 high-pressure storage tank 1, the decompression valve 11 is used for controlling the output of the CO2 solvent, the extraction pressure in the inner cavity of the oil removal tank 2 can be adjusted through the pressure controller 1 5, so that the CO2 solvent is stabilized at the supercritical pressure. The supercritical millet loading barrel 3 is used for loading millet particles, the millet particles in the supercritical millet loading barrel 3 in the oil removal tank 2 are fully contacted with the CO2 solvent for extraction and oil removal; the pressure controller 2 6 is used for controlling the CO2 solvent and the millet oil mixture to be delivered to the oil collection tank 4 through the second delivery pipe 23, and after decompression, the CO2 solvent can be separated from the millet oil, so that the millet oil is concentrated and recycled and stored in the oil collection tank 4. The device can effectively remove and concentrate the millet oil, can avoid the occurrence of the halitosis of instant millet porridge due to fat oxidation, so as to prolong the storage period of the instant millet porridge; and the recycled millet oil can be individually sealed and packaged as a material package to prolong the storage period and improve the circulation of the product.
[0040] In some embodiments, the supercritical millet loading barrel 3 comprises a barrel body 31 and a support hoop 32; the support hoop 32 is fixedly installed on the peripheral wall of the barrel body 31, so as to support and reinforce the barrel body 31 and prevent the barrel body 31 from being deformed under the action of changing pressure.
[0041] Specifically, the barrel body 31 is in a non-sealed state; an opening or a through hole can be formed in the barrel wall of the barrel body 31 to facilitate the full contact between the CO2 solvent and the millet particles; the size of the through hole is smaller than the size of the millet particles.
[0042] In some embodiments, the oil removal tank 2 is provided with a sealing cover 21 for sealing the outlet of the millet barrel.
[0043] The sealing cover 21 is used for sealing the outlet of the millet barrel, so as to ensure the stability of the high-pressure environment for extraction and oil removal in the oil removal tank 2.
[0044] In some embodiments, flow meters 1 7 and 2 8 are further included; the flow meter 1 7 is installed on the first delivery pipe 22 to measure the output amount of the CO2 solvent of the CO2 high-pressure storage tank 1; the outlet of the oil collection tank 4 is connected to the pipeline between the corresponding flow meter 1 7 and the pressure controller 1 5 of the first delivery pipe 22 through the third delivery pipe 24; and the flow meter 2 8 is installed on the third delivery pipe 24 to measure the return amount of the CO2 solvent.
[0045] The first conveying pipe 22, the deoiling tank 2, the second conveying pipe 23, the oil collecting tank 4 and the third conveying pipe 24 are connected in series to form a CO2 solvent circulation loop; the flow meter one 7 is used to measure the output amount of the CO2 solvent; in the actual extraction process, the pressure controller one 5 stabilizes the high-pressure CO2 solvent in the deoiling tank 2 at the supercritical pressure; after the extraction is completed, the pressure controller two 6 opens the second conveying pipe 23 to reduce the pressure of the CO2 solvent and the millet oil mixture and convey them to the oil collecting tank 4; the CO2 solvent after pressure reduction becomes gas and is separated from the millet oil; the millet oil remains in the oil collecting tank 4; the gaseous CO2 solvent returns to the first conveying pipe 22 through the third conveying pipe 24; the flow meter two 8 is used to measure the return amount of the CO2 solvent; according to the loss amount of the CO2 solvent, the deoiling process can be supplemented with the CO2 solvent for the next time.
[0046] Specifically, one end of the first conveying pipe 22 is connected and communicated with the outlet of the pressure reducing valve 11, and the other end is connected and communicated with the inlet of the deoiling tank 2; one end of the second conveying pipe 23 is connected and communicated with the outlet of the deoiling tank 2, and the other end is connected and communicated with the inlet of the oil collecting tank 4; one end of the third conveying pipe 24 is connected and communicated with the outlet of the oil collecting tank 4, and the other end is connected and communicated with the first conveying pipe 22. The outlet of the deoiling tank 2 can be arranged at the lower part of the deoiling tank 2 to facilitate the flow of the CO2 solvent and the millet oil mixture.
[0047] In some embodiments, the pressure reducing valve 11 is an electrically controlled pressure reducing valve.
[0048] In some embodiments, a controller is further included, which is electrically connected with the flow meter one 7, the flow meter two 8 and the pressure reducing valve 11.
[0049] The flow meter one 7 and the flow meter two 8 can feed back the measured CO2 solvent flow conditions to the controller, and the controller can control the opening and closing state of the pressure reducing valve 11 according to the output and return amounts of the CO2 solvent.
[0050] In some embodiments, the pressure controller one 5 and the pressure controller two 6 are both pressure regulating valves.
[0051] Specifically, the pressure controller one 5 and the pressure controller two 6 can be electrically controlled pressure regulating valves; the controller is electrically connected with the pressure controller one 5 and the pressure controller two 6 to control the opening and closing and the opening degree of the pressure controller one 5 and the pressure controller two 6.
[0052] In some embodiments, a heating jacket 9 is further included, which is sleeved outside the deoiling tank 2 to control the extraction temperature in the inner cavity of the deoiling tank 2.
[0053] The heating jacket 9 is used to control the extraction temperature; the heating jacket 9 is coaxially sleeved outside the deoiling tank 2 to make the extraction temperature in the inner cavity of the deoiling tank 2 more uniform. The CO2 solvent in the supercritical state can be regulated and controlled by the cooperation of the heating jacket 9, the pressure controller one 5, the pressure controller two 6 and the pressure reducing valve 11.
[0054] Specifically, the heating jacket 9 is an electric heating jacket, and the controller is electrically connected with the heating jacket 9 to control the heating power thereof; the deoiling tank 2 is provided with a temperature sensor for detecting the temperature in the inner cavity thereof, and the controller is electrically connected with the temperature sensor to receive the temperature signal fed back by the temperature sensor and to regulate and control the extraction temperature in the inner cavity of the deoiling tank 2.
[0055] In some embodiments, the oil collection tank 4 is provided with a grease outlet.
[0056] The grease outlet can facilitate taking out the millet grease obtained by extraction from the oil collection tank 4.
[0057] Specifically, a valve is installed at the grease outlet of the oil collection tank 4 to facilitate opening and closing of the grease outlet.
[0058] Another embodiment of the utility model provides a millet grease removing and recycling method, which comprises the millet grease removing and recycling device; and the specific steps comprise:
[0059] Step one: placing the supercritical millet loading barrel 3 loaded with millet particles into the inner cavity of the deoiling tank 2 and sealing the deoiling tank 2;
[0060] Step two: opening the pressure reducing valve 11 to output the CO2 solvent in the CO2 high-pressure storage tank 1 to the deoiling tank 2 for millet grease extraction; the flow rate of the CO2 solvent is 5-7 kg / h; the extraction temperature in the inner cavity of the deoiling tank 2 is 38-46 DEG C, and the extraction pressure is 15-18 MPa;
[0061] Step three: after deoiling for 75-90 min, inputting the CO2 solvent and the oil and grease mixture into the oil collection tank 4 through the second conveying pipe 23 and controlling the inner cavity pressure of the oil collection tank 4 to be 8-10 MPa through the pressure controller two 6.
[0062] In some embodiments, the method further comprises step four: taking out the millet grease in the oil collection tank 4 and independently sealing and packaging the millet grease as a convenient millet porridge material package.
[0063] The millet grease is concentrated and recycled and independently sealed and packaged as a convenient millet porridge material package, which can improve the circulation of millet porridge products.
[0064] Specifically, the experimental research process of removing the oil and grease is as follows:
[0065] (1) Determination of extraction time
[0066] It is found in the research that the fat content in the millet decreases with the extension of the extraction time, and it is found through comparison that most of the oil and grease is extracted within 75 min, so the millet is processed for 75-90 min.
[0067] (2) Influence of extraction temperature on millet oil yield
[0068] Under the conditions of extraction pressure 20 MPa and CO2 flow rate 5 kg / h, the relationship between the oil yield of millet and the extraction temperature of 38℃, 40℃, 42℃, 44℃, 46℃, 48℃ and 50℃ was studied. The extraction temperature has a significant effect on the oil yield of millet. In the study range, the oil yield is the largest at 38℃, and sharply decreases at 46℃, therefore, 38-46℃ is selected for millet processing.
[0069] (3) Effect of extraction pressure on the oil yield of millet
[0070] Under the conditions of extraction temperature 38℃ and CO2 flow rate 5 kg / h, the extraction amount of millet oil was studied at extraction pressure 10 MPa, 20 MPa, 25 MPa, 30 MPa and 35 MPa. The extraction amount has little difference at 15 MPa-30 MPa, and although the extraction amount increases at 35 MPa, the increase is only about 5%, therefore, considering the energy consumption, the extraction pressure is selected as 15-18 MPa.
[0071] (4) Effect of CO2 flow rate on the oil yield of millet
[0072] Under the conditions of extraction temperature 38℃ and extraction pressure 15 MPa, the oil yield of millet and the CO2 flow rate were studied at CO2 flow rate 3 kg / h, 5 kg / h, 7 kg / h and 9 kg / h. The oil yield of millet increases with the increase of flow rate, and considering the increase of production cost with the increase of flow rate, the CO2 flow rate is selected as 5-7 kg / h.
[0073] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.
[0074] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.
Claims
1. A device for removing and recovering millet oil, characterized in that, include: CO2 high-pressure storage tank (1), wherein a pressure reducing valve (11) is installed at the tank opening of the CO2 high-pressure storage tank (1); The deoiling tank (2) is provided with a rice bucket inlet and outlet; the outlet of the pressure reducing valve (11) is connected to the inlet of the deoiling tank (2) through the first conveying pipe (22) to convey CO2 solvent into the inner cavity of the deoiling tank (2); A supercritical rice container (3) is used to fill the inner cavity of the oil removal tank (2) through the rice container inlet and outlet. An oil collection tank (4) is provided, the inlet of which is connected to the outlet of the degreasing tank (2) via a second conveying pipe (23) to collect millet oil. Pressure controller one (5) and pressure controller two (6); pressure controller one (5) is installed on the first delivery pipe (22) to control the extraction pressure inside the oil removal tank (2); pressure controller two (6) is installed on the second delivery pipe (23) to reduce the pressure of the CO2 solvent and millet oil mixture and deliver it to the oil collection tank (4).
2. The millet oil removal and recovery device according to claim 1, characterized in that, The degreasing tank (2) is equipped with a sealing cap (21) to seal the inlet and outlet of the rice bucket.
3. The millet oil removal and recovery device according to claim 1, characterized in that, It also includes flow meter one (7) and flow meter two (8); the flow meter one (7) is installed on the first delivery pipe (22) to measure the output of CO2 solvent; the outlet of the oil collection tank (4) is connected to the pipeline between the first delivery pipe (22) and the pressure controller one (5) through the third delivery pipe (24); the flow meter two (8) is installed on the third delivery pipe (24) to measure the return of CO2 solvent.
4. The millet oil removal and recovery device according to claim 3, characterized in that, The pressure reducing valve (11) is an electrically controlled pressure reducing valve.
5. The millet oil removal and recovery device according to claim 4, characterized in that, It also includes a controller, which is electrically connected to flow meter one (7), flow meter two (8) and the pressure reducing valve (11).
6. The millet oil removal and recovery device according to claim 5, characterized in that, Both the pressure controller one (5) and the pressure controller two (6) are pressure regulating valves.
7. The millet oil removal and recovery device according to claim 6, characterized in that, The controller is electrically connected to pressure controller one (5) and pressure controller two (6).
8. The millet oil removal and recovery device according to claim 1, characterized in that, It also includes a heating jacket (9), which is fitted outside the oil removal tank (2) to control the extraction temperature inside the oil removal tank (2).
9. The millet oil removal and recovery device according to claim 1, characterized in that, The oil collection tank (4) is provided with an oil outlet.