Visual separation kettle for supercritical extraction

Abstract

The utility model provides a visual separation kettle for supercritical extraction, which comprises a kettle body, two visual windows are arranged above the kettle body, a vacuum cavity is arranged between the two visual windows, the outer side walls of the two visual windows are detachably connected with the inner side wall of the upper end of the kettle body through a connecting device, a spoiler is further arranged inside the kettle body, and the spoiler is connected with the vacuum cavity. A spoiler is arranged in the kettle body, a plurality of spoiler holes are formed in the spoiler, and the opposite side of the spoiler is attached to the opposite inner side wall of the kettle body, the device is provided with the spoiler, the spoiler is arranged in an inclined mode, the spoiler is provided with the spoiler holes, and the opposite side of the spoiler is attached to the opposite inner side wall of the kettle body, so that in the using process, the spoiler is not prone to falling off, and the spoiler is not prone to falling off. The multiple spoiler holes formed in the spoiler divide liquid into multiple small streams to form multi-channel flowing, so that flowing of extraction fluid in the separation kettle is more complex and diversified, multi-channel turbulent flow can be formed, extraction products are separated more rapidly and fully, and the overall extraction rate is increased.

Description

Technical Field

[0001] The utility model relates to the field of separation kettles for extraction, in particular to a visible separation kettle for supercritical extraction. Background Art

[0002] The principle of supercritical extraction (SFE) separation process is to use the influence of pressure and temperature on the solubility of supercritical fluid. In the supercritical state, the supercritical fluid is contacted with the substance to be separated, so that it can selectively extract the components of polarity, boiling point and molecular weight in sequence, and then the supercritical fluid is turned into ordinary gas by reducing pressure and increasing temperature, and the extracted substance is completely or basically precipitated, thereby achieving the purpose of separation and purification. The separation kettle is an indispensable component of the separation step of the supercritical extraction equipment.

[0003] In the existing visual separation kettle for supercritical extraction, it usually includes a separation kettle and a kettle cover. The kettle body and the kettle cover are both made of metal entities, and the material is mostly ordinary carbon steel. The kettle body and the kettle cover are assembled with fasteners to form a fully enclosed entity. The interior of the separation kettle is mostly a cavity, and the air inlet and the air outlet are directly connected or directly opposite to each other. The extraction work is carried out through the separation kettle. However, during the operation of the existing equipment, since the interior of the separation kettle body is mostly a cylindrical cavity, there is no fluid disturbance structure, and the air inlet and the air outlet are opposite to each other to form a straight flow path, the extraction product may not be separated in time after the fluid enters, that is, it is discharged from the air outlet with the air flow, which greatly reduces the extraction rate.

[0004] Therefore, it is necessary to provide a new supercritical extraction visual separation kettle to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a visual separation kettle for supercritical extraction.

[0006] The utility model provides a visual separation kettle for supercritical extraction, comprising a kettle body, wherein two visual windows are arranged on the top of the kettle body, a vacuum cavity is arranged between the two visual windows, the outer side walls of the two visual windows are detachably connected to the inner side wall of the upper end of the kettle body through a connecting device, a spoiler is also arranged inside the kettle body, the spoiler is arranged in an inclined manner, a plurality of spoiler holes are arranged on the spoiler, and the opposite sides of the spoiler are in contact with the opposite inner side walls of the kettle body.

[0007] Preferably, the kettle body includes a separation kettle and a kettle cover, the kettle cover is arranged on the separation kettle, the kettle cover and the separation kettle are threadedly connected, the outside of the separation kettle is fixedly connected to a support plate, the upper end of the support plate is fitted with the bottom end of the kettle cover, and the outer side wall of the separation kettle is also provided with a kettle body heating sleeve.

[0008] Preferably, a plurality of heating rods are arranged inside the kettle body heating jacket, and the plurality of heating rods are connected to the kettle body heating jacket via fixing screws.

[0009] Preferably, the connecting device comprises a sealing bushing and a plurality of bolts, the outer side walls of the two viewing windows are fixedly connected to the inner side wall of the sealing bushing, and the sealing bushing is installed inside the kettle cover through the plurality of bolts.

[0010] Preferably, an air outlet joint is provided on one side of the separation kettle, an air inlet joint is provided on the side of the separation kettle close to the air outlet joint, an air inlet pipeline is installed at the end of the air inlet joint away from the separation kettle, and a heating coil is provided on the outer wall of the air inlet pipeline.

[0011] Preferably, the opposite sides of the bottom of the separation kettle are arranged in an arc shape, and a sampling port joint is also arranged at the bottom of the separation kettle, and a sampling valve is installed at one end of the sampling port joint away from the separation kettle.

[0012] Preferably, a sealing groove is provided at the upper end of the separation kettle, a kettle body sealing ring is provided inside the sealing groove, and the upper end of the kettle body sealing ring is fitted with the bottom end of the kettle cover.

[0013] Preferably, a sampling port sealing gasket is installed at the sampling port joint position.

[0014] Compared with the related art, the visual separation kettle for supercritical extraction provided by the utility model has the following advantages:

[0015] Beneficial effects:

[0016] 1. The device is provided with a spoiler which is inclined and has a plurality of spoiler holes. The opposite sides of the spoiler are in contact with the opposite inner walls of the kettle body, so that during use, the majority of spoiler holes provided on the spoiler divide the liquid into a plurality of small streams to form a multi-channel flow, making the flow of the extraction fluid in the separation kettle more complex and diversified, forming a multi-channel turbulence, making the separation of the extraction product faster and more complete, and improving the overall extraction rate.

[0017] 2. By setting a visual window, the visual window is connected to the kettle body through a connecting device. The connection structure of this part forms a high-pressure resistant self-tightening sealing structure, which can meet the visual function under high-pressure environmental conditions.

[0018] 3. By providing two visual windows, a vacuum cavity is provided between the two visual windows. There are no gas molecules in the vacuum cavity, so the heat conduction path is greatly reduced, making the vacuum cavity have a lower thermal conductivity, which can effectively prevent the transfer of heat and improve the overall extraction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the visual separation kettle for supercritical extraction provided by the utility model;

[0020] Figure 2 Another perspective schematic diagram of the visual separation kettle for supercritical extraction provided by the utility model;

[0021] Figure 3 A cross-sectional view of a visual separation kettle for supercritical extraction provided by the utility model;

[0022] Figure 4 for Figure 3 The enlarged view of point A is shown;

[0023] Figure 5 for Figure 3 The enlarged view of point B is shown;

[0024] Figure 6 A schematic diagram of the installation of the separation kettle and kettle cover provided by the utility model;

[0025] Figure 7 This is a schematic diagram of the internal structure of the kettle cover provided by the utility model.

[0026] Numbers in the figure: 1. separation kettle; 2. kettle cover; 3. viewing window; 4. sealing bushing; 5. air inlet connector; 6. air inlet pipeline; 7. air outlet connector; 8. sampling port connector; 9. sampling valve; 10. kettle body heating jacket; 11. heating rod; 12. heating coil; 13. fixing screw; 14. spoiler; 15. kettle body sealing ring; 16. sealing gasket; 17. support plate. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0028] Please refer to Figure 1-Figure 7 ,in, Figure 1 This is a schematic diagram of the overall structure of the visual separation kettle for supercritical extraction provided by the utility model; Figure 2 Another perspective schematic diagram of the visual separation kettle for supercritical extraction provided by the utility model; Figure 3 A cross-sectional view of a visual separation kettle for supercritical extraction provided by the utility model; Figure 4 for Figure 3 The enlarged view of point A is shown; Figure 5 for Figure 3 The enlarged view of point B is shown;

[0029] Figure 6 A schematic diagram of the installation of the separation kettle and kettle cover provided by the utility model; Figure 7 The utility model provides a schematic diagram of the internal structure of the kettle cover.

[0030] In the specific implementation process, Figure 1-Figure 7 As shown, a visual separation kettle for supercritical extraction includes a kettle body, two visual windows 3 are arranged on the top of the kettle body, a vacuum cavity is arranged between the two visual windows 3, the outer side walls of the two visual windows 3 are detachably connected to the inner side wall of the upper end of the kettle body through a connecting device, and a spoiler 14 is also arranged inside the kettle body, the spoiler 14 is inclined, and a plurality of spoiler holes are arranged on the spoiler 14, and the opposite sides of the spoiler 14 are in contact with the opposite inner side walls of the kettle body;

[0031] The connecting device includes a sealing bushing 4 and a plurality of bolts. The outer side walls of the two viewing windows 3 are fixedly connected to the inner side walls of the sealing bushing 4. The sealing bushing 4 is installed inside the kettle cover 2 by means of a plurality of bolts.

[0032] In the specific use process, by setting the spoiler 14, the spoiler 14 is inclined, and a plurality of spoiler holes are provided on the spoiler 14, and the opposite side of the spoiler 14 is in contact with the opposite inner wall of the kettle body, so that in the use process, the majority of spoiler holes opened by the spoiler 14 divide the liquid into a plurality of small streams to form a multi-channel flow, so that the flow of the extraction fluid in the separation kettle 1 is more complex and diversified, and a multi-channel turbulence can be formed, so that the extraction product is separated more quickly and fully, and the overall extraction rate is improved;

[0033] In a specific implementation, by setting a visual window 3, the visual window 3 is connected to the kettle body through a connecting device, and the connection structure of this part forms a high-pressure resistant self-tightening sealing structure, which can meet the visual function under high-pressure environmental conditions, and by setting the number of visual windows 3 to two, a vacuum cavity is set between the two visual windows 3, and there are no gas molecules in the vacuum cavity, so the heat conduction path is greatly reduced, so that the vacuum cavity has a lower thermal conductivity, which can effectively prevent the transfer of heat and improve the overall extraction effect;

[0034] The arrangement of the bolts makes it possible to separate the two viewing windows 3 from the kettle cover 2. The detachable manner makes the maintenance and cleaning of the viewing mirror more convenient and quick, without the need to disassemble the entire sealing cover, thus reducing maintenance costs and time;

[0035] The above-mentioned two visual windows 3 are provided. When the pressure in the separation kettle 1 is too high and the visual window 3 is damaged, the two visual windows 3 can improve the safety of the overall equipment during use;

[0036] Among them, the material of the visual window 3 is high-pressure resistant sapphire material, which ensures higher safety of the overall equipment operation;

[0037] The kettle body comprises a separation kettle 1 and a kettle cover 2. The kettle cover 2 is arranged on the separation kettle 1. The kettle cover 2 is threadedly connected to the separation kettle 1 and can be directly tightened or opened manually. The operation is simple and quick. A support plate 17 is fixedly connected to the outside of the separation kettle 1. The upper end of the support plate 17 fits with the bottom end of the kettle cover 2. A kettle body heating sleeve 10 is also arranged on the outer wall of the separation kettle 1. The kettle body heating sleeve 10 is specifically made of quartz fiber material. A plurality of heating rods 11 are arranged inside the kettle body heating sleeve 10. The plurality of heating rods 11 are connected to the kettle body heating sleeve 10 by fixing screws 13.

[0038] The above-mentioned separation kettle 1 and kettle cover 2 are both forged from C276 Hastelloy or SUS316 stainless steel alloy and mechanically processed after being enhanced by heat treatment process. They have excellent properties such as corrosion resistance, high temperature resistance, and high pressure resistance, which can greatly improve the durability of the overall equipment.

[0039] It should be noted that the multiple heating rods 11 are used to provide a stable temperature environment for the separation kettle 1. The heating jacket is arranged on the outer surface of the separation kettle 1. The heating rods 11 are fixed with the aid of fixing screws 13. The multiple heating rods 11 are used for temperature compensation to avoid the occurrence of large temperature differences.

[0040] The heating rod 11 is specifically a PTC auxiliary heating rod 11. The PTC material has the characteristic that the resistance increases with the increase of temperature. This characteristic makes the resistance increase and the current decrease when the temperature rises, thereby avoiding safety hazards such as overheating and fire. This self-stable heating characteristic enables the PTC heating rod 11 to automatically control the resistance value and realize temperature self-control.

[0041] An air outlet connector 7 is provided on one side of the separation kettle 1, an air inlet connector 5 is provided on the side of the separation kettle 1 close to the air outlet connector 7, an air inlet pipeline 6 is installed on the end of the air inlet connector 5 away from the separation kettle 1, and a heating coil 12 is provided on the outer wall of the air inlet pipeline 6;

[0042] The outlet connector 7 and the inlet connector 5 are arranged at right angles to each other, and by providing a spoiler 14, after the extraction fluid enters the separation kettle 1, a multi-channel turbulence is formed, so that the extraction product is separated more quickly and more fully. After the complete separation, part of the extraction product flows along the inner wall of the kettle body to the sampling port, and the other part flows down along the surface of the spoiler 14, and finally gathers at the sampling port connector 8 to flow out and be collected;

[0043] The heating coil 12 designed on the air intake line 6 is used to heat the air intake line 6 through which the supercritical fluid flows, thereby improving fluidity;

[0044] The heating coil 12 is specifically made of flexible carbon fiber. Carbon fiber is a pure black body material. During the electric-heat conversion process, the visible light radiation is very small. The electric-heat conversion efficiency is as high as more than 95%, which is much higher than traditional metal wire, halogen and other materials, and can effectively reduce energy consumption.

[0045] The opposite sides of the bottom of the separation kettle 1 are arranged in an arc shape, and the inner side wall of the arc shape can accelerate the fluidity of the extraction product, so that the product can be collected more fully and quickly. A sampling port joint 8 is also arranged at the bottom of the separation kettle 1, and a sampling valve 9 is installed at the end of the sampling port joint 8 away from the separation kettle 1, and a sampling port sealing gasket 16 is installed at the sampling port joint 8; the sampling port sealing gasket arranged therein is used to completely fill the dead volume of the joint to prevent the extraction product from remaining;

[0046] The sampling valve 9 mentioned above is a straight-through large-diameter fluid valve, which plays a throttling role in pressurized sampling and collection to prevent splashing, and can also make the fluid flow better and the collection more efficient;

[0047] A sealing groove is provided at the upper end of the separation kettle 1, and a kettle body sealing ring 15 is provided inside the sealing groove. The upper end of the kettle body sealing ring 15 is fitted with the bottom end of the kettle cover 2;

[0048] During specific use, the kettle body sealing ring 15 can be composite fiber or polytetrafluoroethylene or graphite composite or fluororubber. During the manual rotation of the kettle cover 2, when the inner plane of the kettle cover 2 completely coincides with the upper plane of the separation kettle 1, the kettle body sealing ring 15 will be completely compressed to fill the entire sealing groove, thereby achieving high-pressure sealing, and the sealing groove structure can effectively avoid the problem of extrusion deformation or damage of the seal.

[0049] The working principle of the utility model is as follows: during the specific use of the device, when the front end fluid flows into the separation kettle 1 from the air inlet line 6, the heating coil 12 assists in heating to improve the fluid fluidity and prevent the accumulation and residue of the extraction product; the fluid enters the separation kettle 1 and impacts the spoiler 14, forming a diffuse turbulent flow in the inner volume, thereby effectively separating on the inner wall of the separation kettle and the spoiler 14 and flowing and accumulating to the sampling port at the bottom of the kettle. The inner bottom wall of the separation kettle with a funnel-shaped design makes it easier for the extraction product to flow and converge, and it can be directly collected after the sampling valve 9 is opened, completing the extraction and separation function;

[0050] The sampling valve 9 here can be directly connected to the collecting bottle to collect and store the extraction product.

[0051] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0052] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A visual separation kettle for supercritical extraction, characterized in that: The invention comprises a kettle body, wherein two visual windows (3) are arranged on the top of the kettle body, a vacuum cavity is arranged between the two visual windows (3), the outer side walls of the two visual windows (3) are detachably connected to the inner side wall of the upper end of the kettle body through a connecting device, and a spoiler (14) is also arranged inside the kettle body, wherein the spoiler (14) is arranged in an inclined manner, a plurality of spoiler holes are arranged on the spoiler (14), and the opposite sides of the spoiler (14) are in contact with the opposite inner side walls of the kettle body.

2. The visual separation kettle for supercritical extraction according to claim 1, characterized in that: The kettle body comprises a separation kettle (1) and a kettle cover (2), wherein the kettle cover (2) is arranged on the separation kettle (1), the kettle cover (2) and the separation kettle (1) are threadedly connected, a support plate (17) is fixedly connected to the outside of the separation kettle (1), the upper end of the support plate (17) is in contact with the bottom end of the kettle cover (2), and the outer side wall of the separation kettle (1) is also provided with a kettle body heating jacket (10).

3. The visual separation kettle for supercritical extraction according to claim 2, characterized in that: A plurality of heating rods (11) are arranged inside the kettle body heating jacket (10), and the plurality of heating rods (11) are connected to the kettle body heating jacket (10) via fixing screws (13).

4. The visual separation kettle for supercritical extraction according to claim 3, characterized in that: The connecting device comprises a sealing bushing (4) and a plurality of bolts, the outer side walls of the two viewing windows (3) are fixedly connected to the inner side wall of the sealing bushing (4), and the sealing bushing (4) is installed inside the kettle cover (2) via the plurality of bolts.

5. The visual separation kettle for supercritical extraction according to claim 4, characterized in that: An air outlet joint (7) is provided on one side of the separation kettle (1), an air inlet joint (5) is provided on the side of the separation kettle (1) close to the air outlet joint (7), an air inlet pipeline (6) is installed on the end of the air inlet joint (5) away from the separation kettle (1), and a heating coil (12) is provided on the outer wall of the air inlet pipeline (6).

6. The visual separation kettle for supercritical extraction according to claim 5, characterized in that: The opposite sides of the bottom of the separation kettle (1) are arranged in an arc shape. A sampling port connector (8) is also arranged at the bottom of the separation kettle (1). A sampling valve (9) is installed at one end of the sampling port connector (8) away from the separation kettle (1).

7. The visual separation kettle for supercritical extraction according to claim 6, characterized in that: The upper end of the separation kettle (1) is provided with a sealing groove, and a kettle body sealing ring (15) is provided inside the sealing groove. The upper end of the kettle body sealing ring (15) is in contact with the bottom end of the kettle cover (2).

8. The visual separation kettle for supercritical extraction according to claim 7, characterized in that: A sampling port sealing gasket (16) is installed at the sampling port joint (8).

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