Extraction device and process thereof

Abstract

The invention aims to provide the extraction device which can realize the aeration circulation extraction of capsaicin and improve the extraction rate of capsaicin. The device comprises an extraction material barrel, an output pump is arranged at the output end of the extraction material barrel, and the output end of the output pump is connected with a water cooling assembly and a buffering barrel through a discharging adjusting valve; the output pump is connected with a circulating pipe, and the circulating pipe penetrates through the water cooling assembly and is communicated with the upper part of the extraction material barrel; a discharging assembly used for filter pressing separation is arranged at the output end of the temporary storage barrel; a micro-nano aeration device for improving the mixed extraction efficiency is arranged at the bottom of the extraction material barrel. The invention is applied to the technical field of purification devices.

Description

Technical Field

[0001] This invention relates to the technical field of purification equipment, and particularly to an extraction device and its process. Background Technology

[0002] Capsaicin is the main substance in chili peppers that gives them their spiciness and biological activity, with a content of 0.1% to 1%. It not only has analgesic, antipruritic, anti-inflammatory, anti-tumor, myocardial and gastrointestinal protective effects, appetite regulation, fat metabolism promotion, lacrimation and sneezing effects, and rheumatism prevention and treatment, but it is also a new type of antifouling agent for marine environmentally friendly coatings. It has a good repellent effect on fouling organisms on the surface of ships and various underwater facilities, showing good antifouling effect. Moreover, it is non-toxic and environmentally friendly, making it an ideal marine antifouling agent.

[0003] Currently, the main methods for extracting capsaicin are solvent extraction and supercritical fluid extraction. Supercritical fluid extraction is unsuitable for industrial application due to its complex operation, expensive equipment, and high cost, thus limiting its application. While solvent extraction is simple to operate and requires less sophisticated equipment, it is time-consuming, yields low results, and requires large amounts of organic solvents in subsequent processing. Furthermore, the capsaicin extraction rate is low during extraction, and the waste material still contains a significant amount of capsaicin, leading to waste and increasing the cost of chili oil production. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an extraction device that can realize capsaicin aeration and circulation extraction and improve the capsaicin extraction rate.

[0005] The technical solution adopted in this invention is as follows: This invention includes an extraction tank, an output pump is provided at the output end of the extraction tank, and the output end of the output pump is connected to a water cooling component and a buffer tank through a discharge regulating valve; the output pump is connected to a circulation pipe, which passes through the water cooling component and communicates with the upper part of the extraction tank; the output end of the buffer tank is provided with a discharge component for pressure filtration separation; and a micro-nano aeration device for improving the extraction efficiency is provided at the bottom of the extraction tank.

[0006] Furthermore, it also includes a feeding assembly, which includes a powder box, an arch-breaking device disposed at the bottom of the powder box, and a feeding fan disposed at the output end of the arch-breaking device. The output end of the feeding fan is connected to the extraction tank through a feeding pipe.

[0007] Furthermore, the extraction tank includes a storage tank, a top cover, at least one lifting device, an ultrasonic generator, and a stirring device. The lifting device is fixedly connected to the outer wall of the storage tank, the top cover is fixedly connected to the output end of the lifting device, and the ultrasonic generator and the stirring device are both fixedly connected to the top cover. In the closed state, the movable ends of the ultrasonic generator and the stirring device are located inside the storage tank.

[0008] Furthermore, a temperature sensor is also provided on the inner wall of the storage bin.

[0009] Furthermore, the water-cooling assembly includes a cooling tower, a water-cooling pipe connected to the output end of the cooling tower, a return pipe connected to the input end of the cooling tower, and a heat exchange pipe sleeved on the outside of the circulation pipe for absorbing heat; the water-cooling pipe and the return pipe are respectively disposed at both ends of the heat exchange pipe.

[0010] Furthermore, the circulation pipe is provided with an inlet pipe for the solvent to enter, and the inlet pipe is equipped with a flow meter for detecting the flow rate.

[0011] Furthermore, the discharge assembly includes an extrusion discharge device connected to the output end of the buffer tank, a filter device disposed at the output end of the extrusion discharge device, and a receiving box disposed below the filter device. The extrusion discharge device is connected to the lower end of the buffer tank via a connecting pipe.

[0012] Furthermore, the process of the extraction apparatus includes the following steps:

[0013] S1. Raw material pretreatment: Raw material is crushed and treated with extraction solvent for MEC treatment;

[0014] S2. Oil ratio and feed: The pretreated solvent and raw materials are put into the extraction tank according to the mass ratio;

[0015] S3. Microbubble-enhanced mass transfer treatment: The micro-nano aeration device continuously introduces compressed air, which forms microbubbles in the extraction tank, increasing the gap between solvent molecules and expanding the contact area with the raw materials.

[0016] S4. Ultrasonic-stirring synergistic extraction: The stirring device continuously stirs the mixture, while the ultrasonic generator performs intermittent ultrasonic treatment.

[0017] S5. Single-cycle extraction: The mixed solvent after the initial extraction in the extraction tank is extracted, and the oil mixture is pumped back into the extraction tank after being heated and temperature controlled by the water-cooling component for cyclic extraction.

[0018] S6. Secondary supplementary extraction: Add the new solvent after MEC treatment to the extraction barrel to perform secondary supplementary extraction;

[0019] S7. Discharge Purification: The extracted oil mixture is fed into a buffer tank by a discharge rotor pump, and then into a screw extruder. High-purity products are obtained through filtration and separation, and the slag is discharged after filtration.

[0020] Furthermore, in step S1, after the raw material is crushed, it is placed in the powder box, and the arch breaking device, together with the positive pressure fan, stably transports the raw material to the extraction barrel; before the raw material enters the extraction barrel, high-pressure gas is continuously introduced into the solvent, and the solvent continuously undergoes MEC circulation treatment in the extraction barrel.

[0021] Furthermore, in step S5, heat is absorbed by the water-cooling component to maintain the internal temperature of the extraction barrel between 35 and 45 degrees Celsius.

[0022] The beneficial effects of this invention are as follows: A micro-nano aeration device continuously introduces compressed air into the added solvent. The compressed air forms microbubbles in the circulating oil, which integrate into the molecular gaps of the oil, optimizing the oil molecule structure and increasing the space between oil molecules. This lays the foundation for easier integration of chili molecules into the oil and improved capsaicin dissolution efficiency. The water-cooling component absorbs heat from the extraction cylinder through the circulation pipe, maintaining the internal temperature of the extraction cylinder between 35-45 degrees Celsius, preventing capsaicin degradation due to high temperatures. A secondary circulation extraction is added to the process flow; after one extraction time, newly processed oil is added to continue extracting capsaicin from the powdered raw material, further improving the capsaicin extraction rate, reducing raw material waste, and lowering capsaicin extraction costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the extraction device of the present invention;

[0024] Figure 2 This is a schematic diagram of the planar structure of the extraction device of the present invention;

[0025] Figure 3 This is a schematic diagram of the extraction tank of the present invention;

[0026] Figure 4 This is a process flow diagram of the present invention.

[0027] In the diagram: 1. Extraction tank; 11. Storage tank; 12. Top cover; 13. Lifting device; 14. Ultrasonic generator; 15. Stirring device; 16. Temperature sensor; 2. Output pump; 3. Discharge regulating valve; 4. Water cooling assembly; 41. Cooling tower; 42. Water cooling pipe; 43. Return pipe; 44. Heat exchange pipe; 5. Buffer tank; 6. Circulation pipe; 61. Feed pipe; 62. Flow meter; 7. Discharge assembly; 71. Extrusion discharge device; 72. Filter device; 73. Receiving box; 8. Feeding assembly; 81. Powder box; 82. Arch breaking device; 83. Feeding fan. Detailed Implementation

[0028] like Figures 1 to 3 As shown, in this embodiment, the present invention includes an extraction tank 1, an output pump 2 is provided at the output end of the extraction tank 1, and the output end of the output pump 2 is connected to a water cooling component 4 and a buffer tank 5 through a discharge regulating valve 3; the output pump 2 is connected to a circulation pipe 6, which passes through the water cooling component 4 and communicates with the upper part of the extraction tank 1; the output end of the buffer tank 5 is provided with a discharge component 7 for pressure filtration separation; and a micro-nano aeration device for improving extraction efficiency is provided at the bottom of the extraction tank 1.

[0029] Specifically, the micro-nano aeration device is a micro-nano bubble generator, which is used to form micro-nano bubbles in the extraction tank 1. The micro-nano bubbles are integrated into the gaps between oil molecules in the oilseed, and the dispersion effect of the micro-bubbles is used to expand the contact area between the oilseed and the chili raw material. At the same time, it breaks the interfacial tension between oil molecules and chili molecules, creating better conditions for capsaicin dissolution.

[0030] A first control ball valve is installed at the lower end of the extraction tank 1. The first control ball valve is a switch valve that controls the oil mixture to enter the output pump 2. The output pump 2 can be a screw pump, which is used to push the oil mixture to circulate between the circulation pipe 6 and the extraction tank 1, increasing the fluidity of the oil and raw materials, thereby increasing the contact of capsaicin and promoting the rapid release of capsaicin from the raw materials and its dissolution into the oil after MEC optimization.

[0031] The discharge regulating valve 3 can be a control ball valve. The discharge regulating valve 3 is connected to a discharge rotor pump. The discharge rotor pump is used to push the extracted oil mixture into the buffer tank 5 to stop the extraction cycle.

[0032] In this embodiment, a feeding assembly 8 is also included. The feeding assembly 8 includes a powder box 81, an arch-breaking device 82 disposed at the bottom of the powder box 81, and a feeding fan 83 disposed at the output end of the arch-breaking device 82. The output end of the feeding fan 83 is connected to the extraction tank 1 through a feeding pipe.

[0033] Specifically, the powder box 81 is equipped with a top cover 12 to facilitate the addition of powdered raw materials by staff. The arch breaking device 82 is a pneumatic arch breaking device that generates impact force by instantaneously releasing compressed air to break up material arches or adhering materials. It is suitable for preventing and handling minor arching and wall adhesion problems. The feeding blower 83 can be a positive pressure air supply device to provide airflow pressure to blow the powdered raw materials into the extraction tank 1.

[0034] In this embodiment, the extraction tank 1 includes a storage tank 11, a top cover 12, at least one lifting device 13, an ultrasonic generator 14, and a stirring device 15. The lifting device 13 is fixedly connected to the outer wall of the storage tank 11, the top cover 12 is fixedly connected to the output end of the lifting device 13, and the ultrasonic generator 14 and the stirring device 15 are both fixedly connected to the top cover 12. In the closed state, the movable ends of the ultrasonic generator 14 and the stirring device 15 are located inside the storage tank 11.

[0035] Specifically, the storage tank 11 forms a reaction space for powdered raw materials and oils. The lifting device 13 can be a telescopic cylinder or a lifting slide, which can realize convenient opening, closing and sealing of the tank, making it easy for staff to open the lid and observe the extraction process. The stirring device 15 can be a rotary motor, and the moving end of the stirring device 15 is equipped with a stirring rod, which is used to improve the fluidity during the capsaicin extraction process. The ultrasonic generator 14 can be an intermittent ultrasonic generator. The mechanical vibration generated when the ultrasonic wave propagates in the liquid will destroy the chili cell structure and accelerate the dissolution of capsaicin. At the same time, the intermittent ultrasonic wave can also generate local high temperature and high pressure through cavitation, further promoting the release of capsaicin.

[0036] In this embodiment, a temperature sensor 16 is also provided on the inner side wall of the storage tank 11.

[0037] Specifically, temperature sensor 16 is used to monitor the temperature of the oil mixture during the cyclic extraction process to prevent the oil mixture from getting too hot, which could lead to capsaicin degradation.

[0038] In this embodiment, the water-cooled assembly 4 includes a cooling tower 41, a water-cooled pipe 42 connected to the output end of the cooling tower 41, a return pipe 43 connected to the input end of the cooling tower 41, and a heat exchange pipe 44 sleeved on the outside of the circulation pipe 6 for absorbing heat; the water-cooled pipe 42 and the return pipe 43 are respectively disposed at both ends of the heat exchange pipe 44.

[0039] Specifically, the two ends of the heat exchange tube 44 are connected to the return tube 43 and the water cooling tube 42 respectively. The heat exchange removes the temperature of the oil mixture in the circulation tube 6. Without affecting the circulation, the temperature of the oil mixture is reduced, so that the extraction process is kept between 35-45 degrees Celsius, which avoids capsaicin degradation and improves capsaicin extraction efficiency.

[0040] In this embodiment, the circulation pipe 6 is provided with an inlet pipe 61 for the solvent to enter, and the inlet pipe 61 is provided with a flow meter 62 for detecting the flow rate.

[0041] Specifically, a second control ball valve is provided below the flow meter 62 to control the oil entry. The flow meter 62 and the ball valve work together to precisely control the effective entry amount, thereby improving the extraction rate and reducing oil waste.

[0042] In this embodiment, the discharge assembly 7 includes an extrusion discharge device 71 connected to the output end of the buffer tank 5, a filter device 72 disposed at the output end of the extrusion discharge device 71, and a receiving box 73 disposed below the filter device 72. The extrusion discharge device 71 is connected to the lower end of the buffer tank 5 through a connecting pipe.

[0043] Specifically, the extrusion discharge device 71 can be a screw extruder, and the filtration device 72 can be a filter screen, wherein the filter screen can be 250 mesh, used to filter powdery raw material residue, and high-purity capsaicin product is obtained through filtration and separation, and the residue is discharged after filtration.

[0044] like Figure 4 As shown, in this embodiment, the extraction device process includes the following steps:

[0045] S1. Raw material pretreatment: Raw material is crushed and treated with extraction solvent for MEC treatment;

[0046] S2. Oil ratio and feed: The pretreated solvent and raw materials are put into the extraction tank 1 according to the mass ratio;

[0047] S3. Microbubble enhanced mass transfer treatment: The micro-nano aeration device continuously introduces compressed air, which forms microbubbles in the extraction tank 1, increasing the gap between solvent molecules and expanding the contact area with the raw materials.

[0048] S4. Ultrasonic-stirring synergistic extraction: The stirring device 15 continuously stirs the mixture, while the ultrasonic generator 14 performs intermittent ultrasonic treatment.

[0049] S5. Single-cycle extraction: The mixed solvent after the initial extraction in the extraction tank 1 is extracted, and the oil mixture is pumped back into the extraction tank 1 after being heated and temperature controlled by the water-cooling component 4 for cyclic extraction.

[0050] S6. Secondary supplementary extraction: Add the new solvent after MEC treatment to the extraction barrel to perform secondary supplementary extraction;

[0051] S7. Discharge Purification: The extracted oil mixture is fed into a buffer tank by a discharge rotor pump, and then into a screw extruder. High-purity products are obtained through filtration and separation, and the slag is discharged after filtration.

[0052] In step S1, chili powder or chili flakes can be used as the raw material for extraction. The raw material is stored in a powder tank equipped with an arch breaker and is stably transported to the extraction tank 1 through a positive pressure air conveying system to avoid raw material clumping and blockage and ensure uniform feeding. Edible oil can be used as the oil. Before the oil is introduced into the extraction tank 1, it undergoes MEC circulation treatment. The circulation system is started to make the edible oil circulate continuously for 10 minutes. At the same time, micro-nano bubbles are continuously introduced during the circulation process. The micro-bubbles are integrated into the molecular gaps of the edible oil to optimize the oil molecule structure and increase the space between oil molecules. This lays the foundation for chili molecules to be more easily integrated into the oil and improve the capsaicin dissolution efficiency.

[0053] In step S2, the preferred mass ratio of oil to chili raw material is 25:1. This mass ratio allows the chili raw material to be better dispersed and mixed in the oil during the extraction process, thereby increasing the contact area between the oil and the chili raw material.

[0054] In step S3, after the oil is injected, the micro-nano aeration device is started again to continuously introduce compressed air into the extraction cylinder, so that the compressed air forms microbubbles and further fills the gaps between oil molecules, and the contact area between the oil and chili raw materials is expanded by the dispersing effect of the microbubbles.

[0055] In step S4, the stirring device 15 continuously stirs while the ultrasonic generator 14 performs intermittent ultrasonic treatment. The synergistic effect of ultrasound and stirring further enhances the mixing of oil and chili raw materials, promoting the rapid release of capsaicin from the raw materials and its dissolution into the MEC-optimized oil. During the extraction process, the water cooling component 4 controls the temperature inside the extraction tank 1 to be stable at around 40°C to avoid high temperature causing capsaicin degradation.

[0056] In step S5, the preferred extraction time is 5 hours to ensure that capsaicin has sufficient time to precipitate from the chili raw material. After one extraction cycle, the capsaicin extraction rate was measured to be 77.2%.

[0057] In step S6, the treated oil is added to the material tank, and the microbubble introduction, ultrasonic stirring and constant temperature of 40°C are maintained. The extraction time is preferably 3 hours. After a second extraction, the cumulative capsaicin extraction rate is 91.3%.

[0058] In step S7, a third and fourth extraction can be performed according to actual production needs. Since the chili flakes themselves contain a certain amount of oil, the subsequent extraction can further recover the residual capsaicin. The chili oil in the temporary storage tank is passed into a screw extruder with a mesh size of 250 mesh, and high-purity capsaicin product is obtained by separation through the filter device 72. The residue is discharged after filtration.

[0059] In this embodiment, in step S1, after the raw material is crushed, it is placed in the powder box 81, and the arch breaking device 82, together with the positive pressure fan, stably transports the raw material to the extraction barrel 1; before the raw material enters the extraction barrel, high-pressure gas is continuously introduced into the solvent, and the solvent continuously undergoes MEC circulation treatment in the extraction barrel.

[0060] Specifically, the raw material is blown into the extraction tank 1 by a positive pressure blower in conjunction with the arch-breaking device 82, ensuring stable raw material feeding, preventing raw material agglomeration and blockage, and ensuring uniform feeding.

[0061] In this embodiment, in step S5, heat is absorbed by the water-cooling component 4 to maintain the internal temperature of the extraction barrel between 35 and 45 degrees Celsius.

[0062] Specifically, the extraction temperature is controlled between 35 and 45 degrees Celsius to improve the extraction activity of capsaicin while avoiding excessive temperature that could lead to capsaicin degradation.

[0063] Although the embodiments of the present invention are described with reference to actual solutions, they do not constitute a limitation on the meaning of the present invention. Modifications to the embodiments and combinations with other solutions based on this specification will be obvious to those skilled in the art.

Claims

1. An extraction apparatus, characterized in that: The system includes an extraction tank (1), an output pump (2) at the output end of the extraction tank (1), a water cooling assembly (4) and a buffer tank (5) at the output end of the output pump (2) via a discharge regulating valve (3); a circulation pipe (6) is connected to the output pump (2), the circulation pipe (6) passes through the water cooling assembly (4) and communicates with the upper part of the extraction tank (1); a discharge assembly (7) for pressure filtration separation is provided at the output end of the buffer tank (5); and a micro-nano aeration device for improving the efficiency of the extraction is provided at the bottom of the extraction tank (1).

2. The extraction apparatus according to claim 1, characterized in that: It also includes a feeding assembly (8), which includes a powder box (81), an arch-breaking device (82) disposed at the bottom of the powder box (81), and a feeding fan (83) disposed at the output end of the arch-breaking device (82). The output end of the feeding fan (83) is connected to the extraction tank (1) through a feeding pipe.

3. The extraction apparatus according to claim 1, characterized in that: The extraction tank (1) includes a storage tank (11), a top cover (12), at least one lifting device (13), an ultrasonic generator (14), and a stirring device (15). The lifting device (13) is fixedly connected to the outer wall of the storage tank (11). The top cover (12) is fixedly connected to the output end of the lifting device (13). The ultrasonic generator (14) and the stirring device (15) are both fixedly connected to the top cover (12). In the closed state, the movable ends of the ultrasonic generator (14) and the stirring device (15) are located inside the storage tank (11).

4. The extraction apparatus according to claim 3, characterized in that: A temperature sensor (16) is also provided on the inner wall of the storage hopper (11).

5. The extraction apparatus according to claim 1, characterized in that: The water-cooled assembly (4) includes a cooling tower (41), a water-cooled pipe (42) connected to the output end of the cooling tower (41), a return pipe (43) connected to the input end of the cooling tower (41), and a heat exchange pipe (44) sleeved on the outside of the circulation pipe (6) for absorbing heat; the water-cooled pipe (42) and the return pipe (43) are respectively disposed at both ends of the heat exchange pipe (44).

6. The extraction apparatus according to claim 1, characterized in that: The circulation pipe (6) is provided with a feed pipe (61) for the solvent to enter, and the feed pipe (61) is provided with a flow meter (62) for detecting the flow rate.

7. The extraction apparatus according to claim 1, characterized in that: The discharge assembly (7) includes an extrusion discharge device (71) connected to the output end of the buffer tank (5), a filter device (72) disposed at the output end of the extrusion discharge device (71), and a receiving box (73) disposed below the filter device (72). The extrusion discharge device (71) is connected to the lower end of the buffer tank (5) through a connecting pipe.

8. A process for an extraction apparatus as described in any one of claims 1-7, characterized in that, The process includes the following steps: S1. Raw material pretreatment: Raw material is crushed and treated with extraction solvent for MEC treatment; S2, Oil ratio and feed: The pretreated solvent and raw materials are put into the extraction tank (1) according to the mass ratio; S3, Microbubble enhanced mass transfer treatment: The micro-nano aeration device continuously introduces compressed air, which forms microbubbles in the extraction tank (1), increasing the gap between solvent molecules and expanding the contact area with the raw material; S4, Ultrasonic-stirring co-extraction: The stirring device (15) continuously stirs, and the ultrasonic generator (14) performs intermittent ultrasonic treatment; S5, One-cycle extraction: The mixed solvent after the initial extraction in the extraction tank (1) is extracted, and the oil mixture is pumped back into the extraction tank (1) after being heated and controlled by the water cooling component (4) for cyclic extraction; S6. Secondary supplementary extraction: Add the new solvent after MEC treatment to the extraction barrel to perform secondary supplementary extraction; S7. Discharge Purification: The extracted oil mixture is fed into a buffer tank by a discharge rotor pump, and then into a screw extruder. High-purity products are obtained through filtration and separation, and the slag is discharged after filtration.

9. The process according to claim 8, characterized in that, In step S1, after the raw material is crushed, it is placed in the powder box (81). The arch breaking device (82) works with the positive pressure fan to stably transport the raw material to the extraction barrel (1). Before the raw material enters the extraction barrel, the solvent is continuously supplied with high-pressure gas, and the solvent is continuously subjected to MEC circulation treatment in the extraction barrel.

10. The process according to claim 8, characterized in that, In step S5, heat is absorbed by the water cooling component (4) to keep the internal temperature of the extraction barrel between 35 and 45 degrees Celsius.

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