Carbon dioxide supercritical extraction equipment

Abstract

The utility model discloses carbon dioxide supercritical extraction equipment, which relates to the technical field of carbon dioxide supercritical extraction and is technically characterized by comprising an extraction tank, a first heating jacket, a temperature sensor, a plurality of first supporting legs and a plurality of second supporting legs, the extraction tank is provided with an air suction pipe, a carbon dioxide inlet pipe, a discharge pipe and an air outlet pipe which are communicated with the interior of the extraction tank, the extraction tank is rotatably connected with a rotating pipe, the side wall of the rotating pipe is fixedly connected with two stirring rods, and the lower end of the rotating pipe is provided with a heating mechanism for heating materials. The center of a material pile can be heated through the heating pipe, and the periphery of the material is heated in cooperation with the first heating sleeve, so that the heating speed of the material can be quickly increased, the period of the whole extraction process is shortened, and the production efficiency of products is improved.

Description

Technical Field

[0001] This utility model relates to the field of supercritical carbon dioxide extraction technology, and in particular to supercritical carbon dioxide extraction equipment. Background Technology

[0002] Supercritical carbon dioxide extraction equipment is a device that utilizes the unique properties of carbon dioxide in a supercritical state to extract and separate substances. This equipment is used in the food and beverage industry to extract flavorings, pigments, caffeine, etc.; in the pharmaceutical field to extract alkaloids, flavonoids, and other active ingredients; and in the cosmetics industry to extract plant essential oils, etc.

[0003] In traditional supercritical carbon dioxide extraction equipment, a heating jacket is usually installed outside the reactor to heat the material. Given the large size of the reactor, even with an internal stirring shaft to promote uniform heating, the heating rate is still relatively slow. On the one hand, this significantly prolongs the entire extraction process cycle, reduces production efficiency, and increases time costs. On the other hand, for some temperature-sensitive components, prolonged slow heating may cause decomposition, deterioration, or side reactions, affecting the quality and purity of the extracted product and leading to a decline in product quality. To solve these problems, we have proposed this supercritical carbon dioxide extraction equipment. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, this utility model provides a supercritical carbon dioxide extraction device, which solves the problems of slow heating rate, long extraction process cycle and reduced production efficiency of traditional supercritical carbon dioxide extraction devices.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a supercritical carbon dioxide extraction device, comprising: an extraction tank, a first heating jacket, a temperature sensor, multiple first support legs and multiple second support legs. The extraction tank is provided with an extraction pipe, a carbon dioxide inlet pipe, a discharge pipe and an outlet pipe communicating with its interior. A rotating pipe is rotatably connected to the extraction tank. Two stirring rods are fixedly connected to the side wall of the rotating pipe. A heating mechanism for heating materials is provided at the lower end of the rotating pipe. The heating mechanism includes a heating pipe connected to the lower end of the rotating pipe. A first liquid storage box is rotatably connected to the upper end of the rotating pipe. A second liquid storage box is connected to the lower end of the heating pipe. A third liquid storage box is rotatably connected to the lower end of the second liquid storage box. Multiple outlet pipes are connected to the lower end of the third liquid storage box. A motor is installed at the upper end of the extraction tank through an installation assembly. A lifting mechanism for lifting materials is provided on the side wall of the extraction tank.

[0008] Preferably, the lifting mechanism includes a horizontal plate fixedly connected to the side wall of the extraction tank, and a threaded conveying pipe fixedly connected to the upper end of the horizontal plate. The threaded conveying pipe is provided with a feed hopper and a discharge pipe communicating with its interior.

[0009] Preferably, an installation ring is fixedly connected to the side wall of the threaded conveying pipe, and a sealing cap is threadedly connected to the side wall of the installation ring.

[0010] Preferably, a liquid storage cylinder is fixedly connected to the upper end of multiple second support legs, a liquid pump is provided at the upper end of the liquid storage cylinder, and a second heating sleeve is fixedly connected to the side wall of the liquid storage cylinder.

[0011] Preferably, the end of the stirring rod away from the rotating tube is fixedly connected to the side wall of the second liquid storage box, and the plurality of liquid outlet tubes are arranged at equal intervals.

[0012] Preferably, a connecting plate is fixedly connected to the side wall of the threaded conveying pipe, and the connecting plate is fixedly connected to the adjacent first support leg.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention, by setting up a heating mechanism, can heat the center of the material pile through a heating tube, and then heat the outer periphery of the material with a first heating jacket. This can quickly increase the heating speed of the material, shorten the cycle of the entire extraction process, and thus improve the production efficiency of the product. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the supercritical carbon dioxide extraction device proposed in this utility model;

[0017] Figure 2 This is a side view of the supercritical carbon dioxide extraction device proposed in this utility model;

[0018] Figure 3 This is another side view of the supercritical carbon dioxide extraction device proposed in this utility model.

[0019] In the diagram: 1 Extraction tank, 2 First heating jacket, 3 Heating tube, 4 Rotating tube, 5 Motor, 6 First liquid storage box, 7 Stirring rod, 8 Vacuum pipe, 9 Carbon dioxide inlet pipe, 10 Second liquid storage box, 11 Discharge pipe, 12 First support leg, 13 Second support leg, 14 Liquid outlet pipe, 15 Second heating jacket, 16 Liquid storage cylinder, 17 Liquid pump, 18 Gas outlet pipe, 19 Threaded conveying pipe, 20 Feed hopper, 21 Sealing cover, 22 Temperature sensor. Detailed Implementation

[0020] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0021] This utility model provides a technical solution:

[0022] Please see Figures 1-3 The supercritical carbon dioxide extraction equipment includes: an extraction tank 1, a first heating jacket 2, a temperature sensor 22, multiple first support legs 12 and multiple second support legs 13. The first heating jacket 2 is widely used in reaction tanks, reaction vessels and other fields, so it will not be described in detail. The extraction tank 1 is equipped with an extraction pipe 8, a carbon dioxide inlet pipe 9, a discharge pipe 11 and an outlet pipe 18 that are connected to its interior. Valves are provided on the extraction pipe 8, the carbon dioxide inlet pipe 9, the discharge pipe 11 and the outlet pipe 18. A rotating pipe 4 is rotatably connected to the extraction tank 1. The rotating pipe 4 is connected to the heating pipe 3. Two stirring rods 7 are fixedly connected to the side wall of the rotating pipe 4.

[0023] The lower end of the rotating tube 4 is equipped with a heating mechanism for heating materials. The heating mechanism includes a heating tube 3 connected to the lower end of the rotating tube 4. The upper end of the rotating tube 4 is rotatably connected to a first liquid storage box 6. The lower end of the heating tube 3 is connected to a second liquid storage box 10. The lower end of the second liquid storage box 10 is rotatably connected to a third liquid storage box. The lower end of the third liquid storage box is connected to multiple liquid outlet pipes 14. The upper end of the extraction tank 1 is equipped with a motor 5 through an installation assembly. The motor 5 is a servo motor. The motor 5 and the side wall of the rotating tube 4 are respectively equipped with a first gear and a second discharge port. The teeth and meshing details of the first gear and the second gear are not shown in the figure, but in reality, the two mesh with each other.

[0024] The extraction tank 1 has a lifting mechanism on its side wall for lifting materials. The lifting mechanism includes a horizontal plate fixedly connected to the side wall of the extraction tank 1. A threaded conveying pipe 19 is fixedly connected to the upper end of the horizontal plate. The threaded conveying pipe 19 is provided with a feed hopper 20 and a discharge pipe that communicate with its interior.

[0025] Furthermore, an installation ring is fixedly connected to the side wall of the threaded conveying pipe 19, and a sealing cap 21 is threadedly connected to the side wall of the installation ring. The material remaining in the threaded conveying pipe 19 can be removed by unscrewing the sealing cap 21, thereby reducing material residue.

[0026] Furthermore, a liquid storage cylinder 16 is fixedly connected to the upper end of multiple second support legs 13. A liquid pump 17 is provided at the upper end of the liquid storage cylinder 16. A second heating jacket 15 is fixedly connected to the side wall of the liquid storage cylinder 16. This type of heater, the second heating jacket 15, is widely used in reaction tanks, reaction vessels and other fields, so it will not be described in detail. A liquid outlet main pipe is connected to the lower end of the liquid storage cylinder 16. Three liquid outlet pipes 14 are connected to the liquid outlet main pipe, which can provide a heat source for the heating tube 3 without the need to connect to an external heat source, such as steam equipment.

[0027] Furthermore, the end of the stirring rod 7 away from the rotating tube 4 is fixedly connected to the side wall of the second liquid storage box 10, making the rotation of the stirring rod 7 more stable. The second liquid storage box 10 is connected to the third liquid storage box, and multiple liquid outlet pipes 14 are arranged at equal intervals.

[0028] Furthermore, a connecting plate is fixedly connected to the side wall of the threaded conveying pipe 19, and the connecting plate is fixedly connected to the adjacent first support leg 12, making the threaded conveying pipe 19 more stable.

[0029] In practical use, the working principle of this utility model is as follows:

[0030] It should be noted that this utility model is a supercritical carbon dioxide extraction device. The user connects to an external vacuum device, a supercritical CO2 storage device, and a tail gas storage device through the suction pipe 8, the carbon dioxide inlet pipe 9, and the outlet pipe 18, respectively. The first liquid storage box 6 is connected to an external heat source (such as a steam device) through a pipe. The vacuum device is started to evacuate the extraction tank 1. The threaded conveying pipe 19 is started, and the threaded conveying pipe 19 conveys the material poured into the feed hopper 20 into the extraction tank 1. After the filling is completed, the supercritical CO2 storage device is opened to input supercritical carbon dioxide. The first heating jacket 2 is started to heat the material. The external heat source injects steam into the first liquid storage box 6. The steam enters the rotating pipe 4 and the heating pipe 3, and finally exits from multiple outlet pipes 14. The heating pipe 3 can heat the material in the middle and, together with the first heating jacket 2, heat the outer periphery of the material, which can quickly improve the heating speed of the material.

[0031] Start motor 5. The output shaft of motor 5 drives the rotating tube 4 and the stirring rod 7 to stir and mix the material and carbon dioxide through the meshing of the first gear and the second gear. After extraction, open the gas outlet pipe 18 and the tail gas enters the tail gas storage device. Open the valve on the discharge pipe 11 (shown in the figure) and the residue is discharged.

[0032] For workshops without an external heat source, a storage tank 16 can be added. Before extraction, the hot oil inside can be preheated by starting the second heating jacket 15, and the hot oil can be sent into the first storage box 6 by the liquid pump 17, thereby expanding the applicability of the device.

[0033] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A supercritical carbon dioxide extraction apparatus comprising: An extraction tank (1), a first heating jacket (2), a temperature sensor (22), a plurality of first supporting legs (12) and a plurality of second supporting legs (13), characterized in that: the extraction tank (1) is provided with an air extraction pipe (8), a carbon dioxide inlet pipe (9), a discharge pipe (11) and an outlet pipe (18) which are in communication with the inside of the extraction tank (1), the extraction tank (1) is rotatably connected with a rotating pipe (4), the rotating pipe (4) is fixedly connected with two stirring rods (7) on the side wall, the lower end of the rotating pipe (4) is provided with a heating mechanism for heating materials, the heating mechanism comprises a heating pipe (3) which is communicated with the lower end of the rotating pipe (4), the upper end of the rotating pipe (4) is rotatably connected with a first liquid storage box (6), the lower end of the heating pipe (3) is communicated with a second liquid storage box (10), the lower end of the second liquid storage box (10) is rotatably connected with a third liquid storage box, the lower end of the third liquid storage box is communicated with a plurality of liquid outlet pipes (14), the upper end of the extraction tank (1) is provided with a motor (5) through a mounting assembly, and the side wall of the extraction tank (1) is provided with a lifting mechanism for lifting materials.

2. The carbon dioxide supercritical extraction apparatus of claim 1, wherein: The lifting mechanism comprises a horizontal plate fixedly connected to the side wall of the extraction tank (1), the upper end of the horizontal plate is fixedly connected with a threaded conveying pipe (19), and the threaded conveying pipe (19) is provided with a feed hopper (20) and a discharge pipe which are in communication with the inside of the threaded conveying pipe (19).

3. The carbon dioxide supercritical extraction apparatus of claim 2, wherein: The side wall of the threaded conveying pipe (19) is fixedly connected with a mounting ring, and the side wall of the mounting ring is threadedly connected with a sealing cover (21).

4. The carbon dioxide supercritical fluid extraction apparatus of claim 3, wherein: The upper ends of a plurality of second supporting legs (13) are fixedly connected with a liquid storage cylinder (16), the upper end of the liquid storage cylinder (16) is provided with a liquid pump (17), and the side wall of the liquid storage cylinder (16) is fixedly connected with a second heating jacket (15).

5. The carbon dioxide supercritical fluid extraction apparatus of claim 4, wherein: The end of the stirring rod (7) away from the rotating pipe (4) is fixedly connected with the side wall of the second liquid storage box (10), and a plurality of liquid outlet pipes (14) are arranged at equal intervals.

6. The carbon dioxide supercritical extraction apparatus of claim 5, wherein: The side wall of the threaded conveying pipe (19) is fixedly connected with a connecting plate, and the connecting plate is fixedly connected with an adjacent first supporting leg (12).

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