Separation equipment for extraction system

Abstract

The utility model discloses separation equipment for an extraction system. The separation equipment comprises a kettle body and a feeding pipe, a feed port and a discharge port are formed in the upper part of the kettle body, and a discharge port is formed in the bottom of the kettle body; the feeding pipe comprises a horizontal section which horizontally penetrates through the feeding hole and a vertical section which vertically extends into the kettle body; a bent section is arranged at the tail end of the vertical section of the feeding pipe, and an outlet of the bent section is formed in the tangential direction of the inner circumferential surface of the kettle body. According to the utility model, the feeding direction and the feeding pipe are optimized, materials at the extraction end in the feeding pipe can be buffered, and the initial speed of the materials discharged to the kettle body is reduced, so that the direct impact of the materials on the materials in the kettle body is reduced, and the upward floating condition of separated dissolved matters in the kettle body is reduced; effective separation of extracted materials is ensured; direct impact of materials on the inner wall of the separation kettle can be avoided, loss of the inner wall of the kettle body is reduced, effective separation of the materials can be guaranteed, and the service life of equipment can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of extraction and separation equipment, in particular to separation equipment for an extraction system. Background Art

[0002] Supercritical fluid is a physical state between gas and liquid that is neither gaseous nor liquid. The density of supercritical fluid is relatively high, similar to that of liquid, while its viscosity is closer to that of gas. Therefore, supercritical fluid is an ideal extractant. Supercritical extraction refers to the use of supercritical fluid as an extractant in contact with the substance to be separated, so that it can selectively extract components of polarity, boiling point and molecular weight in sequence. If the original phase of the supercritical fluid used is gas, then after the supercritical extraction process, it can usually be converted into ordinary gas by means of decompression and heating, and the extracted substance is completely or basically precipitated, thereby achieving the purpose of separation and purification. Based on the extraction principle of supercritical fluid, supercritical fluid is also suitable for removing liquid substances from porous solid materials and achieving the drying of porous solid materials.

[0003] Common supercritical fluid extraction agents include gaseous supercritical fluids like methane and carbon dioxide (vapor-phase supercritical fluids), and liquid supercritical fluids like water, ethanol, and methanol (liquid-phase supercritical fluids). After supercritical extraction or supercritical drying, vapor-phase supercritical fluids can be converted to gas by reducing pressure and increasing temperature. The extracted substance is then completely or substantially precipitated, achieving separation and purification. Therefore, the extraction process using vapor-phase supercritical fluids typically consists of a combination of extraction and separation steps.

[0004] A separation kettle is a device used to separate gaseous carbon dioxide and dissolved substances in a supercritical extraction system. However, currently available separation kettles, such as the tea CO2 supercritical extraction and separation device described in Chinese Patent CN217067762U, have a horizontal feed port, which allows for horizontal feeding. However, because the incoming material is at high pressure, horizontal feeding can cause prolonged direct impact on the equipment, potentially damaging the inner wall. Furthermore, the feed direction, which aligns with the gas discharge port, affects the separation of the materials.

[0005] Based on this, it is necessary to study a separation equipment for the extraction system. Utility Model Content

[0006] In view of this, the purpose of the present invention is to provide a separation device for an extraction system, which can effectively solve the problem that the horizontal arrangement of the separation kettle feed port will damage the inner wall of the kettle body, while the vertical arrangement will affect the separation effect.

[0007] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0008] A separation device for an extraction system comprises a kettle body and a feed pipe;

[0009] The upper part of the kettle body is provided with a feed inlet and a discharge port, and the bottom of the kettle body is provided with a drain port;

[0010] The feed pipe includes a horizontal section horizontally passing through the feed port and a vertical section vertically extending in the kettle body;

[0011] The end of the vertical section of the feed pipe is provided with a curved section, and the outlet of the curved section is arranged along the tangent direction of the inner circumferential surface of the kettle body.

[0012] Furthermore, the curved section is a spiral structure extending downward.

[0013] Furthermore, a baffle is provided inside the kettle body, and an exhaust gap is formed between the edge of the baffle and the inner wall of the kettle body; a through hole is provided in the middle of the baffle for the vertical section to pass through.

[0014] Furthermore, the baffle is a conical baffle that is smaller at the top and larger at the bottom, and the exhaust gap is annular.

[0015] Furthermore, the baffle is fixedly connected to the vertical section of the feed pipe.

[0016] Furthermore, a support is fixed horizontally on the circumference of the outer wall of the kettle body.

[0017] Furthermore, the support is located in the middle of the kettle body, and the baffle is parallel to the support.

[0018] Furthermore, the kettle body also includes a kettle cover, which is arranged on the top of the kettle body and is used to close the opening of the kettle body.

[0019] Furthermore, the kettle body also includes an inner kettle body and a jacket sleeved on the outer side of the inner kettle body, and a heating pipe is arranged in the jacket.

[0020] The beneficial effects of the above technical solution are:

[0021] (1) The feed pipe in the present invention includes a horizontal section horizontally passing through the feed port and a vertical section vertically extending in the kettle body. The turning angle between the horizontal section and the vertical section can buffer the material at the extraction end in the feed pipe, thereby reducing the initial speed of the material when it is discharged into the kettle body; a curved section is provided at the end of the feed pipe to guide the material at the extraction end to enter the kettle body along the horizontal tangent direction, which can further reduce the initial speed of the material when it is discharged into the kettle body. The outlet of the curved section is provided along the tangent direction of the inner circumference of the kettle body, which allows the material at the extraction end to enter the kettle body along the horizontal tangent direction; under the combined effect of the buffering effect between the horizontal section and the vertical section, the buffering effect of the curved section and the outlet direction of the curved section, the direct impact of the material on the material in the kettle body is reduced, the upward floating of the separated dissolved matter in the kettle body is alleviated, and the effective separation of the material after extraction is ensured.

[0022] In addition, the outlet of the curved section is arranged along the tangent direction of the inner circumference of the kettle body, which can avoid direct impact of the material on the inner wall of the separation kettle, reduce the loss of the inner wall of the kettle body, and effectively solve the problem that the horizontal setting of the separation kettle feed inlet will damage the inner wall of the kettle body, while the vertical setting will affect the separation effect. It can not only ensure the effective separation of materials, but also increase the service life of the equipment.

[0023] (2) The curved section in the present invention is spiral-shaped, which allows the material to enter the kettle in a vortex shape, which can not only further separate the gas and liquid and enhance the separation efficiency, but also further reduce the speed of the material and reduce the disturbance to the dissolved matter that has been separated in the kettle, thereby ensuring the effective separation of the material after extraction.

[0024] (3) The baffle in the present invention can effectively block the dissolved matter floating upward, and prevent the material in the feed pipe from causing impact disturbance to the dissolved matter in the kettle body, so that the dissolved matter is blown to the top of the kettle body and discharged from the discharge port along with the gas; the edge of the baffle and the inner wall of the kettle body form an exhaust gap to facilitate the passage of gas without affecting the normal discharge of carbon dioxide gas.

[0025] (4) The baffle in the present invention is a conical baffle that is small at the top and large at the bottom. When the dissolved matter condenses on the baffle, it is more likely to gather under the baffle and form liquid that drips downward. The annular exhaust gap also enables the baffle to be distributed in the center of the kettle body, ensuring the uniformity of the exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view schematic diagram of the utility model;

[0027] Figure 2 It is a top view schematic diagram of the present invention.

[0028] Figure numerals: 1-kettle body; 2-feed pipe; 3-baffle; 4-feed port; 5-discharge port, 6-drainage port, 7-bend section, 8-kettle cover, 9-support, 101-inner kettle body, 102-jacket, 201-horizontal section, 202-vertical section. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0030] This embodiment aims to provide a separation device for an extraction system, which is mainly used for separating gaseous carbon dioxide and dissolved substances in a supercritical extraction system, and addresses the problem that a horizontal arrangement of the separation kettle feed port will damage the inner wall of the kettle body, while a vertical arrangement will affect the separation effect.

[0031] A separation device for an extraction system, such as Figure 1 , including a kettle body 1 and a feed pipe 2; in this embodiment, the kettle body 1 is mainly used to separate gaseous carbon dioxide from the dissolved substance, and in other embodiments, the kettle body 1 can also be used for other gas-liquid separations. A feed port 4 and a discharge port 5 are provided on the upper part of the kettle body 1. The feed port 4 is used to input the extracted material, and the discharge port 5 is used to output the gaseous carbon dioxide; a discharge port 6 is provided on the bottom of the kettle body 1 for outputting the liquid dissolved substance. A discharge pipe is provided on the discharge port 5, and a discharge pipe is provided on the discharge port 6. Valves are provided on the discharge pipe and the discharge pipe, respectively, for controlling the switch of the discharge port 5 and the switch of the discharge port 6. The valve at the feed port 4 is provided at a position where the feed pipe 2 is located outside the kettle body 1, for controlling the switch of the feed port 4. The structure and working principle of the valve are prior art and will not be repeated here.

[0032] The feed pipe 2 includes a horizontal section 201 horizontally passing through the feed port 4 and a vertical section 202 extending vertically in the kettle body 1. The horizontal section 201 is passed through the feed port 4 to facilitate connection with the upstream extraction equipment. The corner between the horizontal section 201 and the vertical section 202 can buffer the material at the extraction end of the feed pipe 2, thereby reducing the initial velocity of the material when it is discharged into the kettle body.

[0033] like Figure 1 and Figure 2The end of the vertical section 202 of the feed pipe 2 is fixedly connected and communicates with a curved section 7. There is a transition angle between the curved section 7 and the feed pipe 2 in the vertical direction, so that the curved section 7 extends obliquely downward. The curved section is also an arc-shaped curved tube. The outlet of the curved section is arranged along the tangent direction of the inner circumference of the kettle body, so that the material at the extraction end enters the kettle body along the horizontal tangent direction, which can further reduce the initial velocity of the material when it is discharged into the kettle body. Combined with the feature that the outlet of the curved section 7 is arranged along the tangent direction of the inner circumference of the kettle body, the direct impact of the material on the material in the kettle body is reduced, and the upward floating of the separated dissolved matter in the kettle body is alleviated, ensuring the effective separation of the material after extraction. In addition, the outlet of the curved section 7 is arranged along the tangent direction of the inner circumference of the kettle body, which can avoid the direct impact of the material on the inner wall of the separation kettle and reduce the loss of the inner wall of the kettle body.

[0034] In this embodiment, the curved section 7 is a spiral structure extending downward ( Figure 1 and Figure 2 Only half a spiral is shown in the figure), so that the outlet direction of the feed pipe 2 is tangent to the inner surface of the kettle body 1, and the material can enter the kettle body 1 in a vortex shape, which can not only further separate the gas and liquid and enhance the separation efficiency, but also further reduce the speed of the material and reduce the disturbance of the separated dissolved matter in the kettle body 1, thereby ensuring the effective separation of the material after extraction.

[0035] In this embodiment, a baffle 3 is fixed to the vertical section 202 of the feed pipe 2 within the kettle body 1. A through-hole is defined in the center of the baffle 3, through which the feed pipe 2 extends vertically downward. The feed pipe 2 is a rigid tube, and the baffle 3 is bonded and fixedly connected to the outer wall of the vertical section 202 of the feed pipe 2 at the through-hole to form an integrated structure, thereby securing the baffle 3 within the kettle body 1. In other embodiments, a plurality of connecting rods may be fixedly connected at circumferential intervals between the baffle 3 and the inner wall of the kettle body 1 to secure the baffle 3 within the kettle body 1, eliminating the need to secure the baffle 3 to the feed pipe 2.

[0036] The edge of the baffle 3 forms an exhaust gap with the inner wall of the kettle body 1 to facilitate the upward passage of gaseous carbon dioxide and discharge from the discharge port 5. The baffle 3 can effectively block the dissolved matter floating upward, preventing the material in the feed pipe 2 from causing impact disturbance on the dissolved matter in the kettle body 1, and blowing the dissolved matter to the top of the kettle body 1 and being discharged from the discharge port 5 along with the gas.

[0037] In this embodiment, baffle 3 is a conical baffle 3, with a tapered sidewall that is larger at the top and smaller at the bottom. When dissolved matter condenses on baffle 3, it tends to accumulate below baffle 3, causing liquid to drip downward. Baffle 3 is located at the center of the kettle, creating an annular exhaust gap and ensuring uniform exhaust.

[0038] In this embodiment, the kettle body 1 further includes a kettle cover 8 , which is disposed on the top of the kettle body 1 . The kettle cover 8 is detachably connected to the kettle body 1 , and the interior of the kettle body 1 can be maintained by opening the kettle cover 8 .

[0039] In this embodiment, supports 9 are fixed horizontally at intervals around the outer wall of the kettle body 1 to facilitate the arrangement of the kettle body 1. The supports 9 are located in the middle of the kettle body 1, specifically at the same height as the baffle 3. The baffle 3 is arranged parallel to the supports 9. When the kettle body 1 is placed horizontally with the baffle 3, the baffle 3 is also arranged horizontally within the kettle body 1 to block and intercept the dissolved matter.

[0040] In this embodiment, the kettle body 1 also includes an inner kettle body 101, and a jacket 102 is provided on the outer side of the inner kettle body 101. A heating tube is provided in the jacket 102. The heating tube is provided with an input port and an output port connected to the heating system. A heating medium flows in the heating tube for heating and keeping the kettle body 1 warm.

[0041] In the above embodiment, the curved section 7 is a spiral structure extending downward; in other embodiments, the curved section can also be a multi-turn spiral structure. In the above embodiment, the baffle 3 is fixed on the vertical section 202; in other embodiments, the kettle body 1 can also be provided with no baffle.

[0042] In the above embodiment, the baffle 3 is a conical baffle with a small top and a large bottom, and the exhaust gap is annular. In other embodiments, the baffle 3 can also be a flat horizontal ring plate with a through hole in the center for the vertical section of the feed pipe to pass through.

[0043] In the above embodiment, an exhaust gap is formed between the edge of the baffle 3 and the inner wall of the kettle body 1 . In other embodiments, the exhaust gap may not be provided, and a plurality of exhaust holes may be provided on the baffle 3 .

Claims

1. A separation device for an extraction system, characterized in that: It comprises a kettle body (1) and a feed pipe (2); The upper portion of the kettle body (1) is provided with a feed inlet (4) and a discharge outlet (5), and the bottom portion of the kettle body (1) is provided with a drain outlet (6); The feed pipe (2) comprises a horizontal section (201) horizontally passing through the feed port (4) and a vertical section (202) vertically extending in the kettle body (1); A curved section (7) is provided at the end of the vertical section (202) of the feed pipe (2), and the outlet of the curved section is provided along the tangent direction of the inner circumferential surface of the kettle body (1).

2. The separation device for an extraction system according to claim 1, characterized in that: The curved section (7) is a spiral structure extending downward.

3. A separation device for an extraction system according to claim 1 or 2, characterized in that: A baffle (3) is provided inside the kettle body (1), and an exhaust gap is formed between the edge of the baffle (3) and the inner wall of the kettle body (1); a through hole for the vertical section (202) to pass through is provided in the middle of the baffle (3).

4. The separation device for an extraction system according to claim 3, characterized in that: The baffle (3) is a conical baffle that is smaller at the top and larger at the bottom, and the exhaust gap is annular.

5. The separation device for an extraction system according to claim 3, characterized in that: The baffle (3) is fixedly connected to the vertical section (202) of the feed pipe (2).

6. The separation device for an extraction system according to claim 3, characterized in that: A support (9) is fixed horizontally on the circumference of the outer wall of the kettle body (1).

7. The separation device for an extraction system according to claim 6, characterized in that: The support (9) is located in the middle of the kettle body (1), and the baffle (3) is parallel to the support (9).

8. The separation device for an extraction system according to claim 1 or 2, characterized in that: The kettle body (1) further comprises a kettle cover (8), which is arranged on the top of the kettle body (1) and is used to close the opening of the kettle body (1).

9. The separation device for an extraction system according to claim 1 or 2, characterized in that: The kettle body (1) further comprises an inner kettle body (101) and a jacket sleeved on the outer side of the inner kettle body (101), wherein a heating pipe is arranged in the jacket (102).

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