Supercritical CO2 extraction device

Abstract

The utility model relates to the technical field of CO2 extraction, in particular to a supercritical CO2 extraction device which comprises a box body, a reaction kettle is arranged in the box body, a cavity is formed between the reaction kettle and the box body, a supporting block is arranged at the bottom end in the reaction kettle, and a groove is formed in the top of the supporting block. According to the supercritical CO2 extraction device, after a solid material needing to be extracted is placed on the placing plate, the placing plate is placed between the vertical plates, then the plug pins are shifted to be inserted into the insertion grooves in the two sides of the placing plate, the placing plate can be fixed between the vertical plates, then the vertical plates are placed into a reaction kettle, and the reaction kettle is placed in the reaction kettle. The mounting blocks at the bottoms of the vertical plates make contact with the spring rods, then the top cover is used for pressing the connecting plates downwards, so that the spring rods contract, the vertical plates and the connecting plates descend, meanwhile, the top cover is in threaded connection with the top of the box body, and the convenience of fixed mounting and dismounting of the containing plates in the device is improved through the design.

Description

Technical Field

[0001] This utility model relates to the field of CO2 extraction technology, specifically a supercritical CO2 extraction device. Background Technology

[0002] The principle of supercritical carbon dioxide extraction and separation process is to use supercritical carbon dioxide as a solvent. In the supercritical state, supercritical carbon dioxide is brought into contact with solid substances, and under appropriate pressure and temperature, it selectively extracts components with different polarities, boiling points and molecular weights in sequence.

[0003] Chinese utility model patent application publication CN209662671U discloses a supercritical CO2 extraction device, including a vessel body, a vessel cover, a jacket, a material component, a steam inlet, and a steam outlet. A support ring is installed in the lower part of the material cylinder, and a material rack is placed on the support ring. The material rack includes multiple positioning rods, and multiple perforated plates are installed vertically and vertically between the multiple positioning rods. A wire mesh is installed on the upper surface of each perforated plate, and a material bag is placed on the upper surface of each wire mesh. A cover plate is movably installed on the top of the material cylinder, and multiple air outlets are machined on the cover plate. A packing seal is provided between the top of the material cylinder and the vessel body. A mixed gas outlet is provided on the vessel body above the packing seal. A flange is provided on the top of the vessel body, and the vessel cover is located above the flange. An automatic rotation mechanism is provided on the upper surface of the vessel cover. The flange and the vessel cover are clamped and sealed by a clamping mechanism. This device not only significantly improves the extraction rate and extraction effect, but also greatly reduces the amount of carbon dioxide used. It has the advantages of easy operation, convenient and quick loading and unloading. However, the position of the wire mesh in this device is fixed. When the material and CO2 have almost been extracted, the material needs to be replaced. The above design is not convenient for material replacement and affects the continuous use of the device. Therefore, we propose a supercritical CO2 extraction device. Utility Model Content

[0004] The purpose of this invention is to provide a supercritical CO2 extraction device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A supercritical CO2 extraction device includes a housing, inside which a reaction vessel is disposed, forming a cavity between the reaction vessel and the housing. A support block is disposed at the bottom of the reaction vessel, and a groove is formed on the top of the support block. A spring rod is fixedly disposed inside the groove, and a mounting block is disposed on the top of the spring rod. A vertical plate is fixedly disposed on the top of the mounting block, and a connecting plate is fixedly disposed on the top of the vertical plate. Protrusions are fixedly disposed on both sides of the connecting plate, and a pin is movably disposed on one side of the vertical plate. A limit plate is fixedly disposed at one end of the pin, and a limit spring is fixedly disposed between the limit plate and the vertical plate.

[0007] Preferably, a placement plate is provided between the two limiting plates, and several slots are provided on both sides of the placement plate.

[0008] The above solution uses slots and pins to allow the placement plate to be secured between the uprights.

[0009] Preferably, the pin and slot are matched, the top of the placement plate has several through holes, and a carbon dioxide input pipe is fixedly installed through one side of the box.

[0010] The above method involves introducing carbon dioxide gas into the reactor through a carbon dioxide input pipe.

[0011] Preferably, the carbon dioxide input pipe is fixedly installed on one side of the reactor, and a solenoid valve is fixedly installed inside the carbon dioxide input pipe.

[0012] The above scheme uses a solenoid valve to control the opening and closing of the carbon dioxide input pipe.

[0013] Preferably, a gas pump is fixedly installed at one end of the carbon dioxide input pipe, and a high-temperature steam input pipe is fixedly installed at the bottom of one side of the box.

[0014] The above scheme involves setting up a high-temperature steam input pipe to transport high-temperature steam.

[0015] Preferably, a high-temperature steam output pipe is fixedly installed on the top side of the box, and a top cover is threadedly connected to the top of the box.

[0016] The above solution allows for the discharge of high-temperature steam from the cavity by setting up a high-temperature steam output pipe.

[0017] Preferably, a support foot is fixedly provided at the bottom of the box, and a heating coil is fixedly provided in the cavity.

[0018] The above scheme uses heating coils to further heat the high-temperature steam inside the cavity, transferring the heat to the reactor and thus raising the temperature inside the reactor.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This supercritical CO2 extraction device involves placing the solid material to be extracted on a placement plate between vertical plates, then moving a pin to insert it into slots on both sides of the placement plate, thus fixing the placement plate between the vertical plates. The vertical plates are then placed inside the reactor, causing the mounting block at the bottom of the vertical plate to contact the spring rod. Finally, the top cover is pressed down on the connecting plate, causing the spring rod to retract and the vertical plates and connecting plate to descend. Simultaneously, the top cover is threaded onto the top of the housing. This design improves the ease of fixing, installing, and disassembling the placement plate in the device.

[0021] 2. This supercritical CO2 extraction device delivers high-temperature steam into the cavity through a high-temperature steam input pipe, which in turn heats the heating coil, further heating the high-temperature steam inside the cavity. This heat is then transferred to the reaction vessel, causing the temperature inside the reaction vessel to rise. Simultaneously, a solenoid valve is opened, and a gas pump delivers carbon dioxide into the reaction vessel. CO2 extraction is completed under suitable temperature and pressure conditions, ensuring the smooth completion of the extraction process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the device of this utility model;

[0024] Figure 3 This is a schematic diagram of the placement plate and through hole of this utility model;

[0025] Figure 4 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0026] In the diagram: 1. Box body; 2. Cavity; 3. Reactor; 4. Support block; 5. Groove; 6. Spring rod; 7. Mounting block; 8. Vertical plate; 9. Connecting plate; 10. Protrusion; 11. Pin; 12. Limiting plate; 13. Limiting spring; 14. Placement plate; 15. Slot; 16. Through hole; 17. Carbon dioxide input pipe; 18. Solenoid valve; 19. Air pump; 20. High-temperature steam input pipe; 21. High-temperature steam output pipe; 22. Top cover; 23. Support foot; 24. Heating coil. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1 - Figure 4 As shown, this utility model provides a technical solution:

[0029] A supercritical CO2 extraction device includes a housing 1, a reaction vessel 3 is disposed inside the housing 1, and a cavity 2 is formed between the reaction vessel 3 and the housing 1. A support block 4 is disposed at the bottom of the interior of the reaction vessel 3. A groove 5 is formed on the top of the support block 4. A spring rod 6 is fixedly disposed inside the groove 5. A mounting block 7 is disposed on the top of the spring rod 6. A vertical plate 8 is fixedly disposed on the top of the mounting block 7. A connecting plate 9 is fixedly disposed on the top of the vertical plate 8. Protrusions 10 are fixedly disposed on both sides of the connecting plate 9. A pin 11 is movably disposed on one side of the vertical plate 8. A limiting plate 12 is fixedly disposed at one end of the pin 11. A limiting spring 13 is fixedly disposed between the limiting plate 12 and the vertical plate 8.

[0030] In this embodiment, preferably, a placement plate 14 is provided between the two limiting plates 12, and several slots 15 are provided on both sides of the placement plate 14.

[0031] With the above solution, by setting the slot 15 and cooperating with the pin 11, the placement plate 14 can be locked between the upright plates 8.

[0032] In this embodiment, preferably, the pin 11 and the slot 15 are matched, the top of the placement plate 14 is provided with several through holes 16, and a carbon dioxide input pipe 17 is fixedly installed through one side of the box body 1.

[0033] The above scheme involves supplying carbon dioxide gas into the reactor 3 via a carbon dioxide input pipe 17.

[0034] In this embodiment, preferably, the carbon dioxide input pipe 17 is fixedly installed on one side of the reactor 3, and a solenoid valve 18 is fixedly installed inside the carbon dioxide input pipe 17.

[0035] The above scheme uses a solenoid valve 18 to control the opening and closing of the carbon dioxide input pipe 17.

[0036] In this embodiment, preferably, a gas pump 19 is fixedly installed at one end of the carbon dioxide input pipe 17, and a high-temperature steam input pipe 20 is fixedly installed at the bottom of one side of the box body 1.

[0037] The above scheme involves setting up a high-temperature steam input pipe 20 to transport high-temperature steam.

[0038] In this embodiment, preferably, a high-temperature steam output pipe 21 is fixedly installed on the top side of the box body 1, and a top cover 22 is threadedly connected to the top of the box body 1.

[0039] The above scheme allows the high-temperature steam in cavity 2 to be discharged by setting a high-temperature steam output pipe 21.

[0040] In this embodiment, preferably, a support foot 23 is fixedly provided at the bottom of the box 1, and a heating coil 24 is fixedly provided in the cavity 2.

[0041] The above scheme uses heating coil 24 to further heat the high-temperature steam inside cavity 2, transferring the heat to reactor 3, thereby increasing the temperature inside reactor 3.

[0042] In this embodiment of the supercritical CO2 extraction device, the solid material to be extracted is placed on the placement plate 14 and then placed between the vertical plates 8. The pin 11 is then moved to insert into the slots 15 on both sides of the placement plate 14, fixing the placement plate 14 between the vertical plates 8. The vertical plates 8 are then placed inside the reaction vessel 3, so that the mounting block 7 at the bottom of the vertical plate 8 contacts the spring rod 6. The top cover 22 is then used to press down on the connecting plate 9, causing the spring rod 6 to retract, and the vertical plates 8 and 9 to descend. Simultaneously, the top cover 22 is screwed down. The wire is connected to the top of the housing 1. The above design improves the convenience of fixing, installing and disassembling the placement plate 14 in the device. High-temperature steam is delivered into the cavity 2 through the high-temperature steam input pipe 20, which heats the heating coil 24, thereby further heating the high-temperature steam inside the cavity 2 and transferring the heat to the reaction vessel 3, so that the temperature inside the reaction vessel 3 can rise. At the same time, the solenoid valve 18 is opened, and the air pump 19 delivers carbon dioxide into the reaction vessel 3. CO2 extraction is completed under the environment of maintaining a suitable temperature and pressure, ensuring that the extraction work can be completed smoothly.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A supercritical CO2 extraction device, comprising a housing (1), characterized in that: The box (1) is equipped with a reaction vessel (3) inside, and a cavity (2) is formed between the reaction vessel (3) and the box (1). A support block (4) is provided at the bottom of the inside of the reaction vessel (3). A groove (5) is provided on the top of the support block (4). A spring rod (6) is fixedly provided inside the groove (5). An installation block (7) is provided on the top of the spring rod (6). A vertical plate (8) is fixedly provided on the top of the installation block (7). A connecting plate (9) is fixedly provided on the top of the vertical plate (8). Protrusions (10) are fixedly provided on both sides of the connecting plate (9). A pin (11) is movably provided on one side of the vertical plate (8). A limit plate (12) is fixedly provided at one end of the pin (11). A limit spring (13) is fixedly provided between the limit plate (12) and the vertical plate (8).

2. The supercritical CO2 extraction apparatus according to claim 1, characterized in that: A placement plate (14) is provided between the two limiting plates (12), and several slots (15) are provided on both sides of the placement plate (14).

3. The supercritical CO2 extraction apparatus according to claim 2, characterized in that: The pin (11) and slot (15) are matched, and the top of the placement plate (14) is provided with several through holes (16). A carbon dioxide input pipe (17) is fixedly installed through one side of the box (1).

4. The supercritical CO2 extraction apparatus according to claim 3, characterized in that: The carbon dioxide input pipe (17) is fixedly installed on one side of the reactor (3), and a solenoid valve (18) is fixedly installed inside the carbon dioxide input pipe (17).

5. The supercritical CO2 extraction apparatus according to claim 4, characterized in that: A gas pump (19) is fixedly installed at one end of the carbon dioxide input pipe (17), and a high-temperature steam input pipe (20) is fixedly installed at the bottom of one side of the box (1).

6. The supercritical CO2 extraction apparatus according to claim 5, characterized in that: A high-temperature steam output pipe (21) is fixedly installed on the top of one side of the box (1), and a top cover (22) is threadedly connected to the top of the box (1).

7. The supercritical CO2 extraction apparatus according to claim 6, characterized in that: The bottom of the box (1) is fixedly provided with a support foot (23), and the cavity (2) is fixedly provided with a heating coil (24).

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