A device for removing impurities in a reaction tank

Abstract

This invention relates to the chemical industry, specifically to a device for removing impurities from a reaction vessel. The device includes a removal cylinder coaxially fixed to the inner wall of the reaction vessel and capable of vertical movement along the inner wall. Removal modules are radially and uniformly arranged within the cylinder cavity. Each module includes a scraper and drive rods symmetrically arranged on either side of the scraper. The two drive rods are radially arranged within the removal cylinder and connected by a fan-shaped filter membrane. The two drive rods can move in opposite directions or backwards along the circumference of the removal cylinder to unfold or retract the filter membrane. When all filter membranes are unfolded, they cooperate to form a circular filter surface that completely covers the liquid surface of the reaction vessel. When the filter membrane is fully unfolded, the scraper is positioned above the filter membrane. When the filter membrane is retracted, the scraper can move vertically to scrape away impurities from the filter membrane surface. This invention can automatically remove impurities above the liquid surface in the reaction vessel, preventing impurities from affecting the reaction rate within the vessel.

Description

Technical Field

[0001] This invention relates to the chemical industry, specifically to a device for removing impurities from a reaction vessel. Background Technology

[0002] Reactors are widely used in industries such as petroleum, chemical, food, pharmaceutical, pesticide, and scientific research. They can be used to complete processes such as sulfidation, nitration, hydrogenation, hydrocarbonation, polymerization, and condensation. They are high-temperature resistant and corrosion-resistant reaction vessels.

[0003] When certain chemical reactions occur, impurities such as precipitates will form on the surface of the liquid in the reaction vessel. For example, in the copper electrolytic refining process, As and Sb ions in the electrolyte mainly exist as AsO3. -4 SbO3 -3 Or AsO3 -3 SbO3 -4 The presence of impurities in the reaction vessel can lead to the formation of floating precipitated anode mud during the reaction process, resulting in a decrease in the reaction rate. Various chemical reactions within the reaction vessel can also generate impurities on the liquid surface, affecting the normal reaction rate. These impurities are difficult to remove during the reaction process and therefore urgently need to be addressed. Summary of the Invention

[0004] To avoid and overcome the technical problems existing in the prior art, the present invention provides an impurity removal device for a reaction vessel. The present invention can automatically remove impurities above the liquid surface in the reaction vessel, preventing impurities from affecting the reaction rate within the vessel.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A device for removing impurities inside a reaction vessel includes a removal cylinder coaxially fixed to the inner wall of the reaction vessel and capable of vertically moving along the inner wall of the reaction vessel. The removal cylinder has removal modules evenly arranged radially inside its cavity.

[0007] The impurity removal module includes a scraper and drive rods symmetrically arranged on both sides of the scraper. The two drive rods are arranged radially along the impurity removal cylinder, and the rods are connected by a fan-shaped filter membrane. The two drive rods can move in opposite directions or backwards along the circumference of the impurity removal cylinder to unfold or retract the filter membrane. After all the filter membranes are unfolded, they cooperate to form a circular filter surface to completely cover the liquid surface of the reaction tank. When the filter membrane is fully unfolded, the scraper is located above the filter membrane. After the filter membrane is retracted, the scraper can move vertically to scrape off impurities from the surface of the filter membrane.

[0008] The impurity removal cylinder is equipped with a collection tank that moves up and down synchronously with the reaction vessel along the axial direction of the impurity removal cylinder. The collection tank is located below the impurity removal module and has an opening at the top to collect impurities scraped off the filter membrane. The impurity removal cylinder is also equipped with a high-pressure nozzle that sprays the impurities scraped off the filter membrane surface into the collection tank.

[0009] As a further aspect of the present invention: the scraper includes two sets of scrapers hinged to each other to form a V-shaped opening and closing structure. The hinge axis of the two scrapers is arranged radially along the impurity removal cylinder. The opening and closing direction of the two scrapers is towards the membrane surface of the filter membrane. The two scrapers are connected by a torsion spring so that the two scrapers can be spread apart to form an "eight" shape arrangement. After the two drive rods move towards each other to retract the filter membrane, the plate ends of the two scrapers abut against the membrane surface of the filter membrane.

[0010] As a further embodiment of the present invention: the impurity removal module further includes a second guide rail formed on the wall of the impurity removal cylinder in the vertical direction, and the scraper is fixed on the second guide rail by a drive seat so that it can slide vertically along the second guide rail.

[0011] As a further embodiment of the present invention: the high-pressure nozzle is fixed on the drive seat and located below the scraper. The high-pressure nozzle can spray high-speed airflow radially along the impurity removal cylinder. When the scraper moves downward in the vertical direction, the scraper and the membrane surface of the filter membrane enclose each other to form a gradually narrowing impurity storage cavity. One end of the impurity storage cavity faces the high-pressure nozzle, and the other end faces the cavity of the collection tank.

[0012] As a further aspect of the present invention: along the vertical downward movement direction, the injection speed of the high-pressure nozzle gradually increases, and when the scraper moves to the lowest point, the opening on the side of the impurity storage cavity adjacent to the high-pressure nozzle is located within the injection range of the high-pressure nozzle.

[0013] As a further embodiment of the present invention: the impurity removal module further includes first guide rails symmetrically arranged on both sides of the second guide rail, both first guide rails being arranged circumferentially along the wall of the impurity removal cylinder, and the two drive rods being fixed on the corresponding first guide rails so that they can move in opposite directions or in opposite directions along the first guide rails.

[0014] As a further embodiment of the present invention: the bottom of the impurity removal cylinder is provided with connecting rods evenly arranged radially and connected and fixed to the collection tank through the connecting rods; a fixed shaft is fixed inside the reaction tank and passes through the collection tank axially; the collection tank and the fixed shaft slide in axial direction.

[0015] As a further embodiment of the present invention: the collection tank has uniformly opened guide holes on its body to allow the reaction liquid to flow outward, and the fixed shaft has uniformly arranged impurity removal nozzles located above the surface of the reaction liquid and capable of extracting the reaction liquid along the circumferential direction, with the nozzles of the impurity removal nozzles facing the inner wall of the collection tank.

[0016] As a further embodiment of the present invention: the bottom of the collection tank is conical with the tip pointing downwards, and impurity suction nozzles are evenly arranged circumferentially on the fixed shaft below the impurity removal nozzles, with the mouth of the impurity suction nozzles facing the bottom surface of the collection tank.

[0017] As a further embodiment of the present invention: the impurity removal cylinder is slidably fitted with the wall of the reaction vessel in the vertical direction, and hydraulic lifting rods are evenly arranged circumferentially inside the reaction vessel. The impurity removal cylinder is fixed to the extension end of the hydraulic lifting rods and is thus driven to rise and fall by the hydraulic lifting rods.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In removing impurities above the liquid surface in a reaction tank, the present invention first lowers the impurity removal cylinder below the liquid surface, then moves the drive rods in each impurity removal module in opposite directions, thereby unfolding the filter membrane below the liquid surface. At this time, the filter membranes of each impurity removal module can cooperate with each other to cover the liquid surface of the reaction tank. Then, the impurity removal cylinder is raised to above the liquid surface in the reaction tank. As the filter membrane passes through the liquid surface, it filters out impurities such as sediment. When the impurity removal cylinder rises to a predetermined height, it drives the two sets of drive rods in the impurity removal module to move towards each other, thereby causing the filter membrane to enter a U-shaped retracted state. After the filter membrane retracts, the scraper moves from bottom to top to scrape away impurities on the surface of the filter membrane on both sides of the scraper, causing the impurities on the surface of the filter membrane to continuously collect downwards. After collection, they are discharged into the collection tank by the airflow ejected from the high-pressure nozzle, thus completing a complete impurity removal operation. When it is necessary to start the next impurity removal operation, the impurity removal cylinder is lowered back above the liquid surface in the reaction tank, and the drive rods and scrapers are reset, and the above process is repeated.

[0020] 2. The scraper of the present invention consists of two sets of hinged scrapers. Under the elastic force of the torsion spring, it can always be kept in an open state to form an "eight" shape. When the scraper slides down the second guide rail, the ends of the two sets of scrapers can fully abut against the filter membrane surface on both sides, thereby continuously scraping away impurities from the filter membrane surface from top to bottom, completing the scraping and collection of impurities.

[0021] 3. To prevent impurities on the filter membrane from flowing away from the collection tank, this invention includes a high-pressure nozzle positioned below the scraper on the drive base. The high-pressure nozzle sprays a high-speed airflow radially. As the high-pressure nozzle moves downward synchronously with the scraper, it blows the scraped impurities into the collection tank along the impurity storage cavity. The gas sprayed by the high-pressure nozzle is an inert gas or a reactive gas. As the high-pressure nozzle moves downward with the scraper, its spray velocity gradually increases, causing the scraped impurities to continuously move towards the collection tank. When the scraper reaches its lowest point, the spray velocity of the high-pressure nozzle reaches its maximum. At this point, the opening of the impurity storage cavity adjacent to the high-pressure nozzle is located within the projection range of the high-pressure nozzle orifice. Under the influence of the high-speed jet, the scraped impurities are collected into the impurity storage cavity, whose diameter gradually decreases, and discharged into the collection tank along the impurity storage cavity, achieving complete recovery of the impurities.

[0022] 4. The collection tank of the present invention has an open top and uniformly distributed guide holes on the tank body. During the synchronous lifting and lowering process with the impurity removal cylinder, it can filter impurities in the dead corners of the center of each fan-shaped filter membrane. Since the impurity removal nozzle is set on the fixed shaft at a predetermined height, it can draw the reaction liquid in the reaction tank and spray it into the reaction tank. The impurities collected in the collection tank are gathered to the bottom of the collection tank by the flushing of the reaction liquid. After the reaction liquid has flushed the collection tank, it flows back into the reaction tank. The impurities are collected at the bottom of the collection tank. After the collected impurities are sucked in by the negative pressure of the impurity suction nozzle, they are discharged to the outside of the reaction tank through the pipeline to achieve the effect of removing impurities. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2a This is a schematic diagram of the scraping module in its first working state according to the present invention.

[0025] Figure 2b This is a schematic diagram of the scraping module in its second working state in this invention.

[0026] Figure 2c This is a schematic diagram of the scraping module in its third working state in this invention.

[0027] Figure 3 This is a schematic diagram of the structure of the collection tank in this invention.

[0028] Figure 4 This is a schematic diagram of the scraper structure in this invention.

[0029] In the picture:

[0030] 1. Reaction vessel; 11. Fixed shaft;

[0031] 111. Impurity removal nozzle; 112. Impurity suction nozzle; 12. Hydraulic lifting rod;

[0032] 2. Impurity removal cylinder; 3. Impurity removal module;

[0033] 31. Drive rod; 32. First guide rail;

[0034] 33. Second guide rail; 34. Drive base;

[0035] 35. Scraper; 351. Scraper blade; 352. Torsion spring;

[0036] 36. High-pressure nozzle; 37. Filter membrane;

[0037] 4. Collection tank; 41. Connecting rod. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1-4 In this embodiment of the invention, a device for removing impurities inside a reaction vessel includes a sealed reaction vessel 1. An impurity removal cylinder 2 is arranged on the inner wall of the reaction vessel 1, and the diameter of the impurity removal cylinder 2 matches the inner diameter of the reaction vessel 1. A hydraulic telescopic rod 12 is fixed to the inner wall of the reaction vessel 1, and the telescopic end of the hydraulic telescopic rod 12 is connected and fixed to the top of the impurity removal cylinder 2, thereby driving the impurity removal cylinder 2 to slide vertically along the wall of the reaction vessel 1.

[0040] The impurity removal cylinder 2 has openings at both the top and bottom, and multiple sets of impurity removal modules 3 are radially arranged on its cylinder wall, preferably six sets. Each impurity removal module 3 includes a second guide rail 33 vertically formed on the cylinder wall of the impurity removal cylinder 2, and a drive seat 34 mounted on the second guide rail 33 and capable of sliding vertically along it. Two sets of first guide rails 32 are symmetrically arranged on both sides of the second guide rail 33. The first guide rails 32 are arranged circumferentially along the cylinder wall of the impurity removal cylinder 2 and are pneumatically or chain-driven arc-shaped guide rails. Both the first guide rails 32 and the second guide rails 33 are made of corrosion-resistant material.

[0041] Both sets of first guide rails 32 are fixed with drive rods 31 by mounting bases. The drive rods 31 are arranged radially along the impurity removal cylinder 2 and are in a suspended rod shape. The rods of the two sets of drive rods 31 are connected by filter membranes 37. The filter membrane 37 is a fan-shaped filter membrane, which forms a 60° angle when fully unfolded. The filter membrane 37 is made of water-permeable material so that the reaction liquid can pass through, thereby filtering out impurities such as precipitates. When all six sets of impurity removal modules 3 have their filter membranes 37 fully unfolded, they cooperate to form a circular filter surface, which can completely cover the liquid surface of the reaction tank 1. When the filter membranes 37 are unfolded, as... Figure 2a As shown, the membrane surface is horizontal.

[0042] After the two sets of drive rods 31 move towards each other along the first guide rail 32, as... Figure 2b As shown, the filter membrane 37 is retracted, and the retracted filter membrane 37 is curled into a U-shape. Since the scraper 35 is fixed on the second guide rail 33 by the drive seat 34, the scraper 35 is arranged above the membrane surface of the filter membrane 37. When the filter membrane 37 is retracted, the scraper 35 slides down along the second guide rail 33 to scrape off the sediment and other impurities on the membrane surface of the filter membrane 37.

[0043] The scraper 35 includes two sets of scrapers 351 hinged to each other. The hinge axis of the scrapers 351 is arranged radially along the impurity removal cylinder 2, so that the two sets of scrapers 351 can form a V-shaped opening and closing action after being engaged. The opening and closing direction of the V-shape is towards the membrane surface of the filter membrane 37. In order to keep the two sets of scrapers 351 in an open state at all times, the two sets of scrapers 351 are connected by a torsion spring 352, so that the two sets of scrapers 351 can be opened to form an "eight"-shaped arrangement. The length of the scraper 351 is not less than the membrane surface length of the filter membrane 37.

[0044] like Figure 2b In the state shown, when the filter membrane 37 is retracted, the two sets of scrapers 351 of the scraper 35 are kept in an open state by the elastic force of the torsion spring 352, so that the surface of the scraper 351 is in full contact with the membrane surface of the filter membrane 37. At this time, driving the scraper 35 to move vertically downward can scrape away impurities from the surface of the filter membrane 37 from top to bottom.

[0045] As the scraper 35 continues to move downwards, the two sets of scrapers 351 and the membrane surface of the filter membrane 37 below the scrapers 351 enclose each other to form a cylindrical impurity storage cavity. Because the scraper 35 continues to move downwards, the diameter of the impurity storage cavity gradually narrows. Figure 2c As shown, impurities are continuously collected into the impurity storage cavity, whose diameter gradually narrows.

[0046] To facilitate the collection of scraped impurities, connecting rods 41 are arranged radially on the wall of the impurity removal cylinder 2. These connecting rods 41, when engaged, support and fix the collection tank 4, ensuring that the collection tank 4 is arranged axially along the impurity removal cylinder 2. The top of the collection tank 4 is open. After the filter membrane 37 is rolled up into a U-shape, one side of the U-shaped opening is located above the tank body of the collection tank 4, allowing the impurities scraped from the filter membrane 37 to flow directly into the collection tank 4.

[0047] To prevent impurities on the filter membrane 37 from flowing away from the collection tank 4, a high-pressure nozzle 36 is arranged on the drive base 34 below the scraper 35. The high-pressure nozzle 36 sprays a high-speed airflow radially, and while moving downward synchronously with the scraper 35, it blows the scraped impurities into the collection tank 4 along the impurity storage cavity. The gas sprayed by the high-pressure nozzle 36 is an inert gas or a reactive gas. As the high-pressure nozzle 36 moves downward with the scraper 35, the spray velocity of the high-pressure nozzle 36 gradually increases, thereby causing the scraped impurities to continuously move towards the collection tank 4. When the scraper 35 moves to its lowest point, the spray velocity of the high-pressure nozzle 36 reaches its maximum. At this time, along the radial direction of the impurity removal cylinder 2, the opening on the side of the impurity storage cavity adjacent to the high-pressure nozzle 36 is within the projection range of the nozzle orifice of the high-pressure nozzle 36. Affected by the high-speed jet, the scraped impurities are discharged into the collection tank 4 along the impurity storage cavity.

[0048] To further remove impurities collected in the collection tank 4, a fixed shaft 11 is arranged axially inside the reaction tank 1. The fixed shaft 11 passes through the collection tank 4 axially, so that the collection tank 4 slides with the fixed shaft 11 when it rises and falls with the impurity removal cylinder 2.

[0049] A purification nozzle 111 is installed on the fixed shaft 11 at a predetermined height. A liquid extraction pipeline is pre-arranged inside the fixed shaft 11 to extract the reaction liquid in the reaction tank 1 and transport it to the purification nozzle 111. The purification nozzle 111 is evenly arranged around the fixed shaft 11, so that after the collection tank 4 rises to the predetermined height with the purification cylinder 2, the reaction liquid is sprayed into the collection tank 4, and the impurities collected in the collection tank 4 are collected to the bottom of the collection tank 4 by the flushing of the reaction liquid.

[0050] The collection tank 4 has evenly spaced guide holes. After the reaction liquid sprayed by the impurity removal nozzle 111 rinses the collection tank 4, it flows back into the reaction tank 1 through the guide holes. To facilitate the collection of impurities in the collection tank 4, the bottom of the tube of the collection tank 4 is designed as a cone with the tip pointing downwards, so that the impurities can be collected at the bottom of the collection tank 4 after rinsing.

[0051] The fixed shaft 11 is also equipped with an impurity suction nozzle 112 located below the impurity removal nozzle 111. When the collection tank 4 rises to the predetermined height, the mouth of the impurity suction nozzle 112 faces the bottom surface of the collection tank 4. After it is started, it can suck up the impurities that have gathered at the bottom of the collection tank 4 through negative pressure to achieve the effect of removing impurities.

[0052] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0053] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0054] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0055] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0056] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A device for removing impurities from a reaction vessel, characterized in that, Includes a cleaning cylinder (2) that is coaxially fixed on the inner wall of the reaction vessel (1) and can move vertically along the inner wall of the reaction vessel (1), and cleaning modules (3) are evenly arranged radially inside the cylinder cavity of the cleaning cylinder (2). The impurity removal module (3) includes a scraper (35) and drive rods (31) symmetrically arranged on both sides of the scraper (35). The two drive rods (31) are arranged radially along the impurity removal cylinder (2). The rods of the two drive rods (31) are connected by a fan-shaped filter membrane (37). The two drive rods (31) can move in opposite directions or backward along the circumference of the impurity removal cylinder (2) to unfold or retract the filter membrane (37). After each filter membrane (37) is unfolded, they cooperate to form a circular filter surface to completely cover the liquid surface of the reaction tank (1). When the filter membrane (37) is fully unfolded, the scraper (35) is located above the filter membrane (37). After the filter membrane (37) is retracted, the scraper (35) can move in the vertical direction to scrape off the impurities on the surface of the filter membrane (37). The impurity removal cylinder (2) is arranged along the axial direction of the reaction vessel (1) with a collection tank (4) that moves up and down synchronously with the impurity removal cylinder (2). The collection tank (4) is arranged below the impurity removal module (3) and has an opening at the top to collect impurities scraped off the filter membrane (37). The impurity removal cylinder (2) is also equipped with a high-pressure nozzle (36) that sprays the impurities scraped off the surface of the filter membrane into the collection tank (4). The scraper (35) includes two sets of scrapers (351) hinged to each other to form a V-shaped opening and closing structure. The hinge axis of the two scrapers (351) is arranged radially along the impurity removal cylinder (2). The opening and closing direction of the two scrapers (351) is towards the membrane surface of the filter membrane (37). The two scrapers (351) are connected by a torsion spring (352) so that the two scrapers (351) can be opened to form an "eight" shape. The two drive rods ( 31) After the two scrapers (351) move towards each other to retract the filter membrane (37), the plate ends of the two scrapers (351) abut against the membrane surface of the filter membrane (37); the two sets of drive rods (31) in the impurity removal module (3) move towards each other, so that the filter membrane (37) enters the U-shaped retracted state. After the filter membrane (37) is retracted, the scraper (35) moves from top to bottom to scrape off the impurities on the surface of the filter membrane (37) on both sides of the scraper (35), so that the impurities on the surface of the filter membrane (37) continue to collect downwards. The impurity removal module (3) also includes a second guide rail (33) opened on the wall of the impurity removal cylinder (2) in the vertical direction. The scraper (35) is fixed on the second guide rail (33) by the drive seat (34) so ​​that it can slide vertically along the second guide rail (33). The impurity removal module (3) also includes first guide rails (32) symmetrically arranged on both sides of the second guide rail (33). Both first guide rails (32) are arranged circumferentially along the wall of the impurity removal cylinder (2). The two drive rods (31) are respectively fixed on the corresponding first guide rails (32) so that they can move in opposite directions or in opposite directions along the first guide rails (32).

2. The impurity removal device for a reaction vessel according to claim 1, characterized in that, The high-pressure nozzle (36) is fixed on the drive seat (34) and located below the scraper (35). The high-pressure nozzle (36) can spray high-speed airflow radially along the impurity removal cylinder (2). When the scraper (35) moves downward in the vertical direction, the scraper (35) and the membrane surface of the filter membrane (37) enclose each other to form a gradually narrowing impurity storage cavity. One end of the impurity storage cavity faces the high-pressure nozzle (36), and the other end faces the cavity of the collection tank (4).

3. The impurity removal device for a reaction vessel according to claim 2, characterized in that, As the vertical movement direction increases, the spray speed of the high-pressure nozzle (36) gradually increases. When the scraper (35) moves to the lowest point, the opening on the side of the impurity storage cavity adjacent to the high-pressure nozzle (36) is located within the spray range of the high-pressure nozzle (36).

4. The impurity removal device for a reaction vessel according to claim 2 or 3, characterized in that, The bottom of the impurity removal cylinder (2) is evenly arranged with connecting rods (41) along the radial direction and is connected and fixed to the collection tank (4) through the connecting rods (41). The reaction tank (1) is fixed with a fixed shaft (11) that passes through the collection tank (4) along the axial direction. The collection tank (4) and the fixed shaft (11) slide together along the axial direction.

5. The impurity removal device for a reaction vessel according to claim 4, characterized in that, The collection tank (4) has uniformly opened guide holes on its body to allow the reaction liquid to flow outward. The fixed shaft (11) has uniformly arranged impurity removal nozzles (111) located above the surface of the reaction liquid and capable of extracting the reaction liquid. The nozzles of the impurity removal nozzles (111) face the inner wall of the collection tank (4).

6. The impurity removal device for a reaction vessel according to claim 5, characterized in that, The bottom of the collection tank (4) is conical with the tip pointing downwards. The fixed shaft (11) is also uniformly arranged with impurity suction nozzles (112) below the impurity removal nozzles (111) along the circumference. The mouth of the impurity suction nozzles (112) faces the bottom of the collection tank (4).

7. A device for removing impurities from a reaction vessel according to any one of claims 1 to 3, characterized in that, The impurity removal cylinder (2) slides in a vertical direction with the tank wall of the reaction vessel (1). Hydraulic lifting rods (12) are evenly arranged in the circumferential direction inside the reaction vessel (1). The impurity removal cylinder (2) is fixed to the extension end of the hydraulic lifting rods (12) and is thus driven to rise and fall by the hydraulic lifting rods (12).

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