Variable volume supercritical extraction apparatus and method of use thereof

Abstract

The application discloses a variable-volume supercritical extraction device and a use method. The extraction kettle comprises a top cover, a kettle body, a top filter cover, an extrusion device and a pushing device. The kettle body is open at both upper and lower ends, the upper end of the kettle body is in sealing connection with the top cover, and the lower end is in sealing connection with the extrusion device. A temperature control layer is arranged outside the kettle body, and a kettle cavity is formed inside the kettle body. The top filter cover is in sealing connection with the kettle body. An inlet pipeline is arranged at the bottom of the kettle body. An upper gas outlet pipeline is arranged at the upper end of the side wall of the kettle body. The upper gas outlet pipeline is in communication with the inner cavity of the top filter cover. The extrusion device comprises a thrusting circular table, a push rod and a filter plate. The thrusting circular table is movably arranged in the kettle cavity, the push rod is connected with the thrusting circular table, and the filter plate is arranged on the thrusting circular table. The upper end of the inlet pipeline is arranged between the thrusting circular table and the filter plate. The extrusion device is connected with the pushing device. The application has the advantages of simple structure, convenient operation, no need of an inner material cylinder, convenient loading and unloading, saving of manpower and material resources, and wide application in the field of supercritical extraction.

Description

Technical Field

[0001] This invention belongs to the technical field of physical separation devices or equipment, specifically relating to a variable volume supercritical extraction device and its usage method. Background Technology

[0002] Supercritical fluids refer to substances in a state above their critical temperature and critical pressure. At this state, pressurizing a gas will not cause it to liquefy; instead, its density will increase, exhibiting properties similar to a liquid while retaining its gaseous characteristics. Supercritical fluids combine the advantages of both gases and liquids. Their density is close to that of liquids, resulting in strong dissolving power, while their viscosity is similar to that of gases, and their diffusion coefficient is much greater than that of ordinary liquids, which is beneficial for mass transfer. Furthermore, supercritical fluids have zero surface tension, allowing them to easily penetrate and diffuse into the micropores of the extractant. Therefore, supercritical fluids possess excellent dissolving and mass transfer characteristics, quickly reaching mass transfer equilibrium with the extractant and achieving effective separation of substances.

[0003] Supercritical fluid extraction (SFE) technology is one of the main directions for future oil extraction. Current literature reports that its oil extraction process has many advantages, including being "green and environmentally friendly, low-cost, and easy to implement," and it has even been adopted by some oil production companies for producing high-end oils. However, despite being around for decades, this technology has not yet been widely adopted. In traditional supercritical fluid extraction, the extractant flows from bottom to top along the extraction vessel, with the inlet located at the bottom and the outlet on the top cover or the side of the upper part of the vessel. Although numerous studies have reported improvements to the supercritical fluid extraction process, including the effects of extraction pressure, temperature, carbon dioxide flow rate, and time on extraction yield, these efforts have largely failed to overcome the persistent problem of low production efficiency in supercritical fluid extraction.

[0004] As the extractant flows from bottom to top through the extraction vessel, it carries the material upwards. Under the influence of gravity, the material then falls back downwards. Therefore, the material remains in a loose state, resulting in short contact time between the extractant and the material, limited dissolving capacity, and difficulty in achieving saturation before output. Consequently, the extraction time is extremely long. Furthermore, because the extraction volume of the existing extraction vessel cannot be changed, all gases inside the vessel must be released after extraction, which is too time-consuming and significantly impacts production efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of existing supercritical extraction devices, such as the loose structure of raw materials during the extraction process, which leads to the rapid escape of the extractant and the reduction of extraction efficiency, as well as the problem of excessive residual gas in the vessel after extraction and long venting time. The present invention provides a variable volume supercritical extraction vessel with reasonable design, simple structure, high extraction efficiency and convenient operation.

[0006] The present invention also provides a method for using a variable volume supercritical extraction device.

[0007] The technical solution adopted to solve the above technical problems is:

[0008] A variable volume supercritical extraction device includes a top cover, a vessel body, a top filter cover, a squeezing device, and a propulsion device.

[0009] The vessel body is open at both the top and bottom. The upper end of the vessel body is sealed to the top cover, and the lower end is sealed to the extrusion device. A temperature control layer is provided on the outside of the vessel body, and a vessel cavity is formed inside the vessel body. The top filter cover is sealed to the vessel body. An inlet pipeline is provided at the bottom of the vessel body. An upper air outlet pipeline is provided at the upper end of the side wall of the vessel body. The upper air outlet pipeline is connected to the inner cavity of the top filter cover.

[0010] The extrusion device includes a thrust frustum, a push rod, and a filter plate; the thrust frustum is movably disposed in the reactor cavity, the push rod is connected to the thrust frustum, and the filter plate is disposed on the thrust frustum; the upper end of the inlet pipeline is disposed between the thrust frustum and the filter plate;

[0011] The extrusion device is connected to the propulsion device.

[0012] As a further improvement of the present invention, a plurality of grooves are also provided on the inner wall of the vessel; the grooves are arc-shaped grooves;

[0013] The side wall of the vessel is equipped with a side outlet pipeline, and both the upper gas outlet pipeline and the side outlet pipeline are connected to the main outlet pipeline;

[0014] A filter belt is provided on one side of the groove, and the other side is connected to the side outlet pipeline.

[0015] As a further improvement of the present invention, the groove is an annular groove, and several annular grooves are respectively arranged in the middle and above parts of the vessel body.

[0016] As a further improvement of the present invention, the lower part of the top filter cover is a filter screen; the upper air outlet pipeline is connected to the internal cavity of the top filter cover.

[0017] As a further improvement of the present invention, the upper surface of the thrust cone is provided with a plurality of arc-shaped support ribs, and the filter plate is disposed on the support ribs; an air inlet is provided at the center of the thrust cone, the gap between the support ribs is connected to the air inlet, and the inlet pipeline is connected to the air inlet.

[0018] As a further improvement of the present invention, the temperature control layer is a water bath layer, and the water bath layer is provided with a water inlet and a water outlet.

[0019] As a further improvement of the present invention, the inlet pipeline is located inside the push rod, and its upper end extends to the upper surface of the thrust cylinder.

[0020] As a further improvement of the present invention, the vessel body is mounted on a support frame, and the propulsion device is mounted below the support frame.

[0021] As a further improvement of the present invention, it also includes a separation vessel, wherein the upper gas outlet pipeline is connected to the separation vessel; the separation vessel is provided with an exhaust port and a liquid outlet.

[0022] A method of using a variable volume supercritical extraction device includes the following steps:

[0023] Close all outlet pipeline valves, open the temperature control layer, open the top cover, place the thrust frustum to the lowest point inside the vessel, and begin loading the material, piling it up tightly from bottom to top.

[0024] Open the outlet pipeline, and the thrust frustum continues to move upward, squeezing the material. Under the pressure of the thrust frustum, some of the target components in the material pass through the top filter cover and flow out from the extraction vessel outlet. When no more target components flow out of the extraction vessel outlet, all pipeline outlets are closed.

[0025] The thrust truncated cone maintains the material in a compacted state. The inlet pipeline is opened to allow air to enter and the pressure is increased. The outlet pipeline valve is adjusted to maintain the pressure and start dynamic extraction. When the outlet extract flow rate drops significantly to close to 0 and the thrust truncated cone can no longer move upward, the air intake is stopped and the extraction ends.

[0026] Release the residual gas in the vessel. When the pressure gauge pointer in the vessel reaches 0, open the top cover, remove the top filter cover, and continue to move the thrust frustum upward to push out the slag.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] This invention employs a thrust frustum to pressurize the material inside the extraction vessel from bottom to top. This, combined with the extractant (carbon dioxide) entering the vessel, propels the material upwards. This achieves overall upward movement of the material and a good seal between the material and the vessel wall, keeping the material constantly compressed. This prevents ineffective escape of the extractant, enabling supercritical pressing extraction with higher efficiency. Simultaneously, the upward movement of the thrust frustum significantly reduces the effective volume of the extraction vessel, greatly shortening the gas venting time after extraction and improving production efficiency.

[0029] Furthermore, a sealing layer is provided between the thrust frustum and the inner wall of the extraction vessel in this invention, which can effectively prevent the extractant from flowing through the gap between the inner wall of the extraction vessel and the bottom cover of the thrust frustum, and has the characteristics of simple operation and convenient installation.

[0030] To further improve the extraction efficiency in the later stages of extraction, this invention employs filter belt or filter ring technology, with a filtration area larger than that of a standalone outlet pipeline, resulting in a significant increase in filtration area and extraction efficiency.

[0031] This invention has a simple structure, is easy to operate, requires no internal material cylinder, and is convenient for loading and unloading materials, saving manpower and resources. It can be widely applied to the field of supercritical extraction. Attached Figure Description

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic diagram of the variable volume supercritical extraction device of the present invention.

[0034] Figure 2 This is a partial cross-sectional view of the variable volume supercritical extraction device of the present invention.

[0035] Figure 3 yes Figure 2 A magnified view of the upper part.

[0036] Figure 4 yes Figure 2 Enlarged view of the central section.

[0037] Figure 5 This is a schematic diagram of a thrust frustum.

[0038] Figure 6 This is a top view of the thrust frustum.

[0039] Explanation of reference numerals in the attached drawings: 100, top cover; 200, vessel body; 300, support frame; 400, extrusion device; 500, propulsion device; 600, separation vessel;

[0040] 101. Kettle lid; 102. Top filter lid; 103. Filter screen;

[0041] 203. Upper exhaust pipe; 202. Drain outlet; 204. Temperature control layer; 205. Filter belt; 206. First side outlet pipe; 207. Reactor cavity; 208. Second side outlet pipe; 209. Main outlet pipe; 210. Water inlet; 201. Inlet pipe;

[0042] 401. Thrust frustum; 402. Push rod; 403. Filter plate; 404. Support rib; 405. Discharge port;

[0043] 601. Vent; 602. Drain. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0045] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] Example 1

[0048] like Figures 1 to 2 The present invention provides a variable volume supercritical extraction device, comprising a top cover 100, a vessel body 200, a top filter cover 102, a squeezing device 400, and a propulsion device 500.

[0049] The top filter cover 102 has a seal around its perimeter where it contacts the inner wall of the vessel to prevent material from flowing upwards and clogging the pipeline.

[0050] The vessel body 200 has openings at both the top and bottom, and smooth inner walls. The upper end of the vessel body 200 is sealed to the top cover 100, and the lower end is sealed to the extrusion device 400. A temperature control layer 204 is provided on the outside of the vessel body 200, and a vessel cavity 207 is formed inside the vessel body 200. An upper air outlet pipe 203 is provided on the upper end of the side wall of the vessel body 200, and an inlet pipe 201 is provided at the bottom of the vessel body 200.

[0051] The extrusion device 400 includes a thrust frustum 401, a push rod 402, and a filter plate 403; the thrust frustum 401 is movably disposed in the vessel cavity 207, the push rod 402 is connected to the thrust frustum 401, and the filter plate 403 is disposed on the thrust frustum 401; the end of the bottom outlet pipeline 211 is disposed between the thrust frustum 401 and the filter plate 403; the extrusion device 400 is connected to the propulsion device 500.

[0052] The working principle is as follows: open the outlet pipeline valve, start the water bath temperature control, open the top cover 100, and move the thrust frustum 401 down to the lowest point inside the vessel. The material to be extracted (such as soybeans, rapeseed, or peanuts) is loaded tightly into the extraction vessel from bottom to top. After filling, the top filter cover 102 is installed, and the top cover 100 is closed. The thrust frustum 401 begins to slowly and continuously move upward, continuously compacting the material. When no extract flows out of the outlet of the upper gas outlet line 203, the valve of the inlet line 201 is opened to start the introduction of CO2 gas (extractant). The booster pump pressurizes the extraction vessel, and dynamic extraction begins. When the outlet extract flow rate decreases significantly (even to 0) and the thrust frustum 401 can no longer move upward, the gas intake is stopped, and the extraction ends. The residual gas in the vessel is released from the upper gas outlet line 203. When the pressure gauge pointer of the vessel body 200 is 0, the top cover 100 is opened, and the thrust frustum 401 continues to move upward, pushing out the top filter cover 102 and the residue. This extraction is complete.

[0053] Preferably, it also includes a separation vessel 600, wherein the upper gas outlet pipeline 203 and the main outlet pipeline 209 are both connected to the separation vessel 600; the separation vessel 600 is provided with an exhaust port 601 and a liquid drain port 602.

[0054] Example 2

[0055] Based on Example 1, such as Figure 2 As shown, the inner wall of the vessel body 200 is also provided with several grooves and several side outlet pipelines; the grooves are arc-shaped grooves, one side of the groove is provided with a filter belt 205, and the other side is connected to the first side outlet pipeline 206. All side outlet pipelines 206 are connected to the main outlet pipeline 209.

[0056] The second operating method is as follows: Open all outlet pipelines of the extraction vessel, activate the water bath temperature control, open the top cover 100, and lower the thrust frustum 401 to the lowest point inside the vessel. Check that the filter belt 205 located on the inner wall of the vessel body 200 is flat. Begin loading, ensuring that the material is packed tightly in layers from bottom to top inside the extraction vessel. After filling, install the top filter cover 102 and close the top cover 100. The thrust frustum 401 begins to slowly and continuously move upward, continuously compacting the material. When no extractant flows out of the upper gas outlet 203, the outlet pipeline valve connected to the filter belt 205 is closed, and CO2 gas (extractant) begins to enter through the inlet pipeline 211 valve. The booster pump pressurizes the extraction vessel, and dynamic extraction begins. When the outlet extractant flow rate decreases significantly (even to 0), the first side outlet pipeline 206 is opened to continue dynamic extraction. When the outlet extractant flow rate decreases significantly (even to 0), and the thrust frustum 401 can no longer move upward, the gas intake is stopped, and the extraction ends. The residual gas in the vessel is released from the upper gas outlet 203. When the pressure gauge pointer of the vessel body 200 is 0, the top cover 100 is opened, and the thrust frustum 401 continues to move upward, pushing out the top filter cover 102 and the residue. This extraction is complete.

[0057] Example 3

[0058] Based on Example 2, such as Figure 4 As shown, the inner wall of the vessel body 200 is also provided with several grooves and several side outlet pipelines; the grooves are arc-shaped grooves, one side of which is provided with a filter belt 205, and the other side is connected to the first side outlet pipeline 206 and the second side outlet pipeline 208. All side outlet pipelines are connected to the main outlet pipeline 209.

[0059] Preferably, the groove is an annular groove, and several annular grooves are respectively arranged in the middle and above of the vessel body 200. In this embodiment, the side outlet pipeline includes a first side outlet pipeline 206 and a second side outlet pipeline 208, requiring that the port areas of the first side outlet pipeline 206 and the second side outlet pipeline 208 are smaller than the area of ​​the groove.

[0060] Open all outlet pipelines of the extraction vessel, activate the water bath temperature control, open the top cover 100, and lower the thrust frustum 401 to the lowest point inside the vessel. Check that the filter belt 205 located on the inner wall of the vessel body 200 is flat. Begin loading, ensuring the material is packed tightly in layers from bottom to top inside the extraction vessel. After filling, install the top filter cover 102 and close the top cover 100. The thrust frustum 401 begins to slowly and continuously move upward, continuously compacting the material. When no extractant flows out of the outlet of the upper gas outlet 203, the outlet pipeline valve connected to the filter belt 205 is closed, and CO2 gas (extractant) begins to enter through the inlet pipeline 201 valve. The booster pump pressurizes the extraction vessel, and dynamic extraction begins. When the outlet extractant flow rate decreases significantly (even to 0), the first side outlet pipeline 206 is opened to continue dynamic extraction. When the outlet extractant flow rate decreases significantly (even to 0), the second side outlet pipeline 208 is opened. When the outlet extractant flow rate decreases significantly (even to 0), and the thrust frustum 401 can no longer move upward, the gas intake is stopped, the extraction ends, and the residual gas in the vessel is released. When the pressure in the vessel body 200 is 0, the top cover 100 is opened, and the thrust frustum 401 continues to move upward, pushing out the top filter cover 102 and the residue. This extraction is complete.

[0061] like Figure 5 and Figure 6 As shown, the upper surface of the thrust frustum 401 is provided with a plurality of arc-shaped support ribs 404, and the filter plate 403 is provided on the support ribs 404; the center of the thrust frustum 401 is provided with an air inlet 405, and the inlet pipeline 201 is connected to the air inlet 405.

[0062] In a preferred embodiment, the temperature control layer 204 is a water bath layer, which is provided with a water inlet 210 and a drain outlet 202. Of course, the temperature control layer 204 of the present invention can also be implemented in other ways, such as an electric heating layer, which is precisely controlled by a temperature control element. For cost considerations, a water bath layer is more convenient.

[0063] In a preferred embodiment, the top filter cover 102 is designed as a cone shape with a higher center and lower edges. Of course, the top filter cover 102 of the present invention can also be implemented in other ways, such as a flat disc without curvature or a frustum without a point.

[0064] In a preferred embodiment, the bottom outlet line 211 is partially disposed inside the push rod 402, with its upper end extending to the upper surface of the thrust frustum 401. Alternatively, the inlet line 211 of the present invention can also be disposed outside the push rod 402, with its upper end extending to the upper surface of the thrust frustum 401.

[0065] In a preferred embodiment, the vessel body 200 is mounted on the support frame 300, and the propulsion device 500 is mounted below the support frame 300.

[0066] In a preferred embodiment, the propulsion device 500 is a hydraulic jack. Of course, the propulsion device 500 of the present invention can also be other driving devices, such as an electric motor drive.

[0067] Instructions for use:

[0068] 1. The upper end of the extraction vessel body 200 is provided with a vessel cover 101 and a top filter cover 102. The vessel body 200 is provided with a temperature-controlled water bath layer. The air inlet 201 is located at the lower part of the vessel body 200 for air intake. The bottom of the vessel body 200 is provided with a thrust frustum 401, an annular seal and a hydraulic propulsion device 500, which can move up and down inside the vessel. The gas flow path follows the bottom inlet and top outlet. Several annular (including semi-annular) filter belts 205 are provided along the inner wall of the vessel body 200. The filter belts 205 are connected to the outlet pipeline, and the outlet pipeline is provided with a valve.

[0069] 2. Equipment usage:

[0070] Open all outlet pipelines, activate the water bath temperature control, open the top cover 100, and lower the thrust frustum 401 to the lowest point inside the vessel. Check that the filter belt 205 located on the inner wall of the vessel body 200 is flat. Begin loading, ensuring the material is packed tightly in layers from bottom to top inside the extraction vessel. After filling, install the top filter cover 102 and close the top cover 100. The thrust frustum 401 begins to slowly and continuously move upward, continuously compacting the material. When no extractant flows out of the outlet of the upper gas outlet 203, the outlet pipeline valve connected to the filter belt 205 is closed, and CO2 gas (extractant) begins to enter through the inlet pipeline 201 valve. The booster pump pressurizes the extraction vessel, and dynamic extraction begins. When the outlet extractant flow rate decreases significantly (even to 0), the first side outlet pipeline 206 is opened to continue dynamic extraction. When the outlet extractant flow rate decreases significantly (even to 0), the second side outlet pipeline 208 is opened. When the outlet extractant flow rate decreases significantly (even to 0), and the thrust frustum 401 can no longer move upward, the gas intake is stopped, the extraction ends, and the residual gas in the vessel is released. When the pressure in the vessel body 200 is 0, the top cover 100 is opened, and the thrust frustum 401 continues to move upward, pushing out the top filter cover 102 and the residue. This extraction is complete.

[0071] It should be noted that in the description of this invention, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0072] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the foregoing claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the applicant has not considered that subject matter as part of the disclosed inventive subject matter.

Claims

1. A variable volume supercritical extraction device, characterized in that, It includes a top cover (100), a vessel body (200), a top filter cover (102), an extrusion device (400), and a propulsion device (500). The vessel body (200) has openings at both the top and bottom. The upper end of the vessel body (200) is sealed to the top cover (100), and the lower end is sealed to the extrusion device (400). A temperature control layer (204) is provided on the outside of the vessel body (200), and a vessel cavity (207) is formed inside the vessel body (200). The top filter cover (102) is sealed to the vessel body (200). An inlet pipeline (201) is provided at the bottom of the vessel body (200). An upper exhaust pipeline (203) is provided on the upper end of the side wall of the vessel body (200). The upper exhaust pipeline (203) is connected to the inner cavity of the top filter cover (102). The extrusion device (400) includes a thrust frustum (401), a push rod (402), and a filter plate (403); the thrust frustum (401) is movably disposed in the vessel cavity (207), the push rod (402) is connected to the thrust frustum (401), and the filter plate (403) is disposed on the thrust frustum (401); the upper end of the inlet pipeline (201) is disposed between the thrust frustum (401) and the filter plate (403); The extrusion device (400) is connected to the propulsion device (500); The inner wall of the vessel body (200) is also provided with several grooves; The side wall of the vessel body (200) is provided with side outlet pipelines (206, 208), and the upper gas outlet pipeline (203) and the side outlet pipelines (206, 208) are both connected to the main outlet pipeline (209); A filter belt (205) is provided on one side of the groove, and the other side is connected to the side outlet pipeline (206, 208); The groove is an annular groove, and several annular grooves are respectively arranged in the middle and above of the vessel body (200); the lower part of the top filter cover (102) is a filter screen (103); the upper air outlet pipeline (203) is connected to the internal cavity of the top filter cover (102); Valves are installed on the upper air outlet pipeline (203), the inlet pipeline (201), and the side outlet pipelines (206, 208); The inlet pipeline (201) is partially located inside the push rod (402), with its upper end extending to the upper surface of the thrust frustum (401).

2. The variable volume supercritical extraction device according to claim 1, characterized in that, The upper surface of the thrust frustum (401) is provided with multiple arc-shaped support ribs (404), and the filter plate (403) is provided on the support ribs (404); the center of the thrust frustum (401) is provided with an air inlet (405), the gap between the support ribs (404) is connected to the air inlet (405), and the inlet pipeline (201) is connected to the air inlet (405).

3. The variable volume supercritical extraction device according to claim 1, characterized in that, The temperature control layer (204) is a water bath layer, which is provided with a water inlet (210) and a drain outlet (202).

4. The variable volume supercritical extraction device according to claim 1, characterized in that, The vessel body (200) is mounted on the support frame (300), and the propulsion device (500) is mounted below the support frame (300).

5. The variable volume supercritical extraction device according to claim 1, characterized in that, It also includes a separation vessel (600), the upper gas outlet pipeline (203) is connected to the separation vessel (600); the separation vessel (600) is provided with an exhaust port (601) and a liquid outlet (602).

6. The method of using the variable volume supercritical extraction device according to claim 1, characterized in that, Includes the following steps: All outlet pipeline valves are closed, the temperature control layer (204) is opened, the top cover (100) is opened, the thrust frustum (401) is placed at the lowest point inside the vessel, and the material is loaded from bottom to top, with the material being loaded tightly. Open the outlet pipeline, and the thrust frustum (401) continues to move upward, squeezing the material. Under the pressure of the thrust frustum, some of the target components in the material pass through the top filter cover (102) and flow out from the extraction vessel outlet. When no more target components flow out from the extraction vessel outlet, all pipeline outlets are closed. The thrust truncated cone (401) maintains the material compaction state, opens the inlet pipeline (201) to introduce air, increases the pressure, adjusts the outlet pipeline valve to maintain the pressure, and starts dynamic extraction. When the outlet extract flow rate is significantly reduced to close to 0 and the thrust truncated cone (401) cannot move upward, the air intake is stopped and the extraction ends. Release the residual gas in the vessel. When the pressure gauge pointer of the vessel body (200) is 0, open the top cover (100), take out the top filter cover (102), and the thrust frustum (401) continues to move upward to push out the slag.

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