Rotary evaporation treatment device for waste sulfuric acid

Abstract

The invention relates to the field of industrial wastewater regeneration treatment and cyclic utilization in environmental protection, in particular to a waste sulfuric acid rotary evaporation treatment device which comprises a rotary evaporator and a gas-liquid separator mounted at the top of the rotary evaporator. According to the waste sulfuric acid rotary evaporation treatment device, when cleaning is needed, the scraping plate and the annular fin are automatically clamped, so that the annular fin has the effect of evaporating a waste sulfuric acid solution and also has the effect of driving the scraping plate to rotate, that is, the scraping plate can be driven to rotate under the condition that the bottom of the tank body is not provided with any opening; the bottom of the inner edge of the can body can be cleaned. Besides the effect of being clamped with the scraping plate, the triangular box can take out the waste sulfuric acid solution when the waste sulfuric acid solution is screwed out by the annular fin, so that the waste sulfuric acid solution can still be in contact with the annular fin, and equivalently, heat continuously acts on waste sulfuric acid.

Description

Technical Field

[0001] The present invention relates to the field of industrial wastewater regeneration and recycling in environmental protection, and in particular to a waste sulfuric acid rotary evaporation treatment device. Background Art

[0002] Sulfuric acid solutions are used in industrial production, and research into regenerating spent sulfuric acid solutions is a key area of ​​environmental protection research. Spent sulfuric acid solutions contain water, iron, copper, and other substances. When the spent sulfuric acid evaporates, the aqueous solution turns into vapor and is discharged, while some sulfates remain and adhere to the inner walls of the evaporation equipment.

[0003] Chinese patent application number: CN202410215732.6, title: A waste sulfuric acid resource rotary evaporation treatment device, which discloses a method of rotary evaporation, replacing the traditional vertical flow evaporation method. However, this will result in a large amount of sulfate being produced at the bottom of the tank, and because the bottom of the tank is in contact with the waste sulfuric acid for a long time, it must be an integrated structure and cannot be an openable structure, which makes cleaning more difficult. In addition, when the annular fins of this structure are used to rotate out the waste sulfuric acid solution, the heat cannot continue to act on the waste sulfuric acid, reducing the evaporation efficiency.

[0004] To this end, it is necessary to design a waste sulfuric acid rotary evaporation treatment device that can facilitate the cleaning of the inner bottom of the tank without designing any openings at the bottom of the tank body, and can still allow heat to act on the waste sulfuric acid when the annular fins rotate out the waste sulfuric acid solution. Summary of the Invention

[0005] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide a waste sulfuric acid rotary evaporation treatment device, which can facilitate the cleaning of the bottom of the inner edge of the tank without designing any openings at the bottom of the tank body, and can still allow heat to act on the waste sulfuric acid when the annular fins rotate out the waste sulfuric acid solution.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: the present invention provides a rotary evaporation treatment device for waste sulfuric acid, comprising a rotary evaporator and a gas-liquid separator installed on the top of the rotary evaporator, the gas-liquid separator being used to absorb water vapor evaporated in the rotary evaporator, the rotary evaporator comprising a tank body and annular fins capable of rotating and generating heat inside the tank body, a gap being left between the annular fins and the inner wall of the tank body, and a plurality of triangular boxes evenly distributed along the circumferential direction of each annular fin being provided on both sides.

[0007] Preferably, it also includes a horizontal pushing mechanism, an arc-shaped baffle and a scraper. The arc-shaped baffle is tightly attracted to the scraper by a strong magnet. The strong magnet is fixed on the arc-shaped baffle. The side of the tank body is provided with a guide box connected to its interior. The circumferential contour of the arc-shaped baffle contacts the inner contour of the guide box. The horizontal pushing mechanism is used to push the arc-shaped baffle toward the annular wing. A plurality of V-shaped blocks that are clamped with the end of the triangular box are fixed on the scraper. The plurality of V-shaped blocks are evenly distributed along the length direction of the scraper. When the V-shaped blocks are clamped with the triangular box, the inner contour of the arc-shaped baffle fits with the inner contour of the tank body.

[0008] Preferably, an elastic seat is provided between the arc baffle and the push plate of the horizontal pushing mechanism, the external pulling mechanism is fixedly installed on the arc baffle, and an insertion shaft is inserted between the push plate, the arc baffle and the scraper. The external pulling mechanism is used to pull the insertion shaft out of the scraper in the opposite direction when the push plate moves toward the arc baffle. An extension column is provided on the arc baffle, and a circular baffle is fixedly provided on one end of the extension column that passes through the insertion shaft. When the V-shaped clamping block is clamped with the triangular box, one side of the circular baffle contacts the end of the guide slide box.

[0009] Preferably, the outward pulling mechanism includes an articulated rod, a swivel seat, a sliding column and a spring. A baffle is provided on the outer edge of the plug-in shaft. The spring is used to exert elastic force on the plug-in shaft baffle close to the arc-shaped baffle. The baffle is fixedly connected to the sliding column. A waist-shaped hole is provided on the articulated rod for the sliding column to slide. The middle part of the articulated rod is hinged to the swivel seat, and one end of the articulated rod is in contact with the push plate.

[0010] Preferably, the elastic seat includes a guide column and spring 2, one end of the guide column is fixedly connected to the arc baffle, the other end of the guide column passes through the push plate, and a limit plate is fixedly provided on the other end of the guide column, and spring 2 is used to apply an elastic force to the push plate away from the arc baffle.

[0011] Preferably, the horizontal pushing mechanism includes an electric push rod and a second hinged rod, and the side of the push plate is provided with an extension plate hinged to one end of the second hinged rod, and the other end of the second hinged rod is hinged to the output end of the electric push rod.

[0012] Preferably, the rotary evaporator and the gas-liquid separator are both in multiple groups, and two symmetrical liquid exchange pipes are fixedly provided on each tank body, and a gate mechanism is connected between the two liquid exchange pipes.

[0013] Preferably, the rotary evaporator includes a hollow rotating shaft and a rotary drive mechanism. The hollow rotating shaft is located in the middle of the tank body and is rotatably connected to the middle of the tank body. An air outlet hole communicating with the interior of the annular wing is provided on the hollow rotating shaft. The rotary drive mechanism is fixedly mounted on the rotary evaporator, and the rotating end of the rotary drive mechanism is fixedly connected to the hollow rotating shaft.

[0014] Preferably, the inner sides of each of the two V-shaped clamping blocks are clamped to two sides of one of the annular wings.

[0015] Preferably, a plurality of dividing guide bars are provided on the outer edge of the end portion of the annular wing, and the plurality of dividing guide bars are staggered with the plurality of triangular boxes.

[0016] The beneficial effects of the present invention are as follows: the waste sulfuric acid rotary evaporation processing device can automatically engage the scraper with the annular fin when cleaning is required, so that the annular fin not only evaporates the waste sulfuric acid solution but also drives the scraper to rotate. That is, when no opening is designed at the bottom of the tank body, the bottom of the inner edge of the tank body can be cleaned. In addition to engaging with the scraper, the triangular box can also carry out the waste sulfuric acid solution when the annular fin is rotated out, so that the waste sulfuric acid solution can still be in contact with the annular fin, which is equivalent to heat continuously acting on the waste sulfuric acid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is the front view of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 3 This is a front view of the present invention with the end cap removed.

[0021] Figure 4 A partial cross-sectional view of the present invention Figure 1 .

[0022] Figure 5 A partial cross-sectional view of the present invention Figure 2 .

[0023] Figure 6 A cross-sectional view of a rotary evaporator.

[0024] Figure 7 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0025] Figure 8 A partial cross-sectional view of the present invention Figure 3 .

[0026] Figure 9 It is a schematic diagram of the three-dimensional structure of the horizontal pushing mechanism.

[0027] Figure 10It is a schematic diagram of the three-dimensional structure of the scraper and the annular wing in the clamping state.

[0028] Figure 11 Schematic diagram of the three-dimensional structure of the rotary evaporator.

[0029] Figure 12 Schematic diagram of the three-dimensional structure of the rotary evaporator.

[0030] Explanation of the accompanying drawings: 1. Rotary evaporator; 1a. Annular wing; 1a1. Triangular box; 1a2. Dividing guide bar; 1b. Hollow rotating shaft; 1c. Tank body; 1c1. Guide slide box; 1c2. Liquid exchange tube; 1d. Rotary drive mechanism; 2. Gas-liquid separator; 3. Gate mechanism; 4. Horizontal pushing mechanism; 4a. Sliding plate; 4b. Electric push rod; 4c. Articulated rod 2; 5. Arc baffle; 5a. Strong magnet; 6. Scraper; 6a. V-shaped block; 7. Elastic seat; 7a. Guide column; 7b. Spring 2; 8. Outer pulling mechanism; 8a. Articulated rod; 8b. Rotating seat; 8c. Sliding column; 8d. Spring 1; 9. Circular baffle; 10. Insert shaft. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Embodiment: The present invention provides a waste sulfuric acid rotary evaporation treatment device, such as Figure 1-12As shown, the rotary evaporator 1 includes a rotary evaporator 1 and a gas-liquid separator 2 mounted on the top of the rotary evaporator 1. The gas-liquid separator 2 is used to absorb the water vapor evaporated in the rotary evaporator 1. A diaphragm pump connected to the water outlet of the gas-liquid separator 2 is provided at the bottom of the rotary evaporator 1. The diaphragm pump sucks the water flow in the gas-liquid separator 2 away and also has the effect of extracting air from the gas-liquid separator 2. The sucked water flow will be transported to the cooling tower. The rotary evaporator 1 includes a tank body 1c and an annular fin 1a that can rotate and generate heat inside the tank body 1c. There is a gap between the annular fin 1a and the inner wall of the tank body 1c. Each annular fin 1a is provided on both sides with a plurality of triangular boxes 1a1 evenly distributed along its circumference. The annular fin 1a rotates to heat the waste sulfuric acid in the tank body 1c, evaporating the water vapor in the waste sulfuric acid through the annular fin 1a. However, since the liquid level of the waste sulfuric acid only accounts for one-third of the height of the tank body 1c, the upper half of the annular fin 1a cannot contact the waste sulfuric acid during rotation. To this end, by providing a triangular box 1a1, the waste sulfuric acid is stored during the rotation of the annular fin 1a and released during the upward rotation process, thereby increasing the contact time between the waste sulfuric acid and the annular fin 1a and accelerating evaporation. It should be explained that the annular fin 1a is made of corrosion-resistant material, and its material can be tantalum, platinum, titanium, etc. Among them, during evaporation, sulfate crystals such as iron sulfate (Fe2(SO4)3) and copper sulfate (CuSO4) are produced. These crystals are by-products and easily adhere to the inner wall of the tank body 1c.

[0033] S1 represents the inflow and outflow direction of hot gas. The arrows in S2 represent the addition and discharge of waste sulfuric acid solution. S3 represents the flow direction of steam after evaporation.

[0034] In order to process the crystallization on the inner wall, it also includes a horizontal pushing mechanism 4, an arc-shaped baffle 5 and a scraper 6. The arc-shaped baffle 5 is tightly attracted to the scraper 6 by a strong magnet 5a. The strong magnet 5a is fixed on the arc-shaped baffle 5. The side of the tank body 1c is provided with a guide box 1c1 connected to its interior. The circumferential contour of the arc-shaped baffle 5 contacts the inner contour of the guide box 1c1. The horizontal pushing mechanism 4 is used to push the arc-shaped baffle 5 toward the annular wing 1a. The scraper 6 is fixed with a plurality of V-shaped blocks 6a that are clamped with the end of the triangular box 1a1. The plurality of V-shaped blocks 6a are evenly distributed along the length direction of the scraper 6. When the V-shaped blocks 6a are clamped with the triangular box 1a1, the inner contour of the arc-shaped baffle 5 fits with the inner contour of the tank body 1c. At this point, the outer contour of the scraper 6 conforms to the inner contour of the tank 1c, and because the V-shaped block 6a engages the triangular box 1a1, the subsequent rotation of the annular wing 1a drives the scraper 6 through the triangular box 1a1, and the scraper 6 scrapes the inner wall of the tank 1c. After cleaning, the annular wing 1a drives the scraper 6 back to this position. Through the suction between the scraper 6 and the curved baffle 5, the horizontal push mechanism 4 pulls the curved baffle 5 outward, which in turn drives the scraper 6 outward.

[0035] During the rotation, the opening of the arc-shaped baffle 5 is blocked to ensure that the interior thereof is a closed structure, and the scraper 6 will not separate from the annular wing 1a during the rotation.

[0036] An elastic seat 7 is provided between the arc-shaped baffle 5 and the push plate 4a of the horizontal pushing mechanism 4, so that the push plate 4a and the arc-shaped baffle 5 maintain a constant distance between them, and at the same time, the two are connected. The external pulling mechanism 8 is fixedly mounted on the arc-shaped baffle 5. An insertion shaft 10 is inserted between the push plate 4a, the arc-shaped baffle 5, and the scraper 6. The external pulling mechanism 8 is used to pull the insertion shaft 10 in the opposite direction and extract it from the scraper 6 when the push plate 4a moves toward the arc-shaped baffle 5. The arc-shaped baffle 5 is provided with an extension column, and a circular baffle 9 is fixedly provided on the end of the extension column that passes through the insertion shaft 10. When the horizontal pushing mechanism 4 pushes the push plate 4a horizontally, the elastic seat 7 will push the arc-shaped baffle 5 and the scraper 6 to move horizontally. When the V-shaped block 6a is engaged with the triangular box 1a1, one side of the circular baffle 9 contacts the end of the guide slide box 1c1. As the push plate 4a continues to push, the push plate 4a will pull out the plug shaft 10 through the external pulling mechanism 8, so that the plug shaft 10 and the scraper 6 are separated. Only then are the scraper 6 and the arc-shaped baffle 5 completely separated, and the scraper 6 can rotate. By providing the plug shaft 10, the movement of the scraper 6 is guided and limited during the horizontal movement of the scraper 6 to prevent it from shaking. And after the scraper 6 is used, when it needs to be pulled out horizontally, the plug shaft 10 can be first inserted into the hole of the scraper 6 to position the scraper 6 and ensure that the scraper 6 can be received in the guide slide box 1c1.

[0037] The pull-out mechanism 8 comprises a hinged rod 8a, a pivot seat 8b, a slide post 8c, and a spring 8d. A baffle is located on the outer edge of the shaft 10. Spring 8d acts as an elastic force to prevent the shaft 10 from approaching the curved baffle 5. The baffle is fixedly connected to the slide post 8c. The hinged rod 8a has a waist-shaped hole for the slide post 8c to slide. The middle of the hinged rod 8a is hinged to the pivot seat 8b, and one end of the hinged rod 8a contacts the push plate 4a. When the push plate 4a begins to compress the pull-out mechanism 8, it pushes the hinged rod 8a to rotate along the pivot seat 8b, which in turn pushes the slide post 8c to move, thereby withdrawing the shaft 10 from the scraper 6. Simultaneously, when the shaft 10 is in position, it compresses spring 8d. When the push plate 4a returns to its original position, the elastic force of spring 8d pushes the shaft 10 back into the scraper 6, simultaneously resetting the pull-out mechanism 8.

[0038] The elastic seat 7 includes a guide post 7a and a second spring 7b. One end of the guide post 7a is fixedly connected to the arc-shaped baffle 5, and the other end of the guide post 7a passes through the push plate 4a. A limit plate is fixedly provided on the other end of the guide post 7a. The second spring 7b is used to apply an elastic force to the push plate 4a away from the arc-shaped baffle 5. The second spring 7b is mounted on the guide post 7a, with one end of the second spring 7b contacting the push plate 4a and the other end of the second spring 7b contacting the arc-shaped baffle 5. The second spring 7b ensures the spacing between the push plate 4a and the arc-shaped baffle 5, while the limit plate ensures the maximum spacing between the two.

[0039] The horizontal push mechanism 4 includes an electric push rod 4b and a second hinge rod 4c. An extension plate is hingedly connected to one end of the second hinge rod 4c on the side of the push plate 4a. The other end of the second hinge rod 4c is hingedly connected to the output end of the electric push rod 4b. By lifting the electric push rod 4b upward, the push plate 4a slides horizontally within the guide box 1c1.

[0040] The rotary evaporator 1 and gas-liquid separator 2 are both arranged in multiple groups. Two symmetrical liquid exchange tubes 1c2 are fixedly mounted on each tank 1c, with a gate mechanism 3 connected between the two liquid exchange tubes 1c2. The waste sulfuric acid in each 1c is automatically evaporated, and the multiple 1cs are connected to each other to ensure that the sulfuric acid in the multiple 1cs can mix with each other. When the solution in one sulfuric acid tank becomes concentrated, the solution in another dilute sulfuric acid tank can quickly mix with it, thereby improving evaporation efficiency.

[0041] The rotary evaporator 1 includes a hollow rotating shaft 1b and a rotary drive mechanism 1d. The hollow rotating shaft 1b is located in the middle of the tank body 1c and is rotatably connected to the middle of the tank body 1c. The hollow rotating shaft 1b is provided with an air outlet that communicates with the interior of the annular fins 1a. The rotary drive mechanism 1d is fixedly mounted on the rotary evaporator 1, and the rotating end of the rotary drive mechanism 1d is fixedly connected to the hollow rotating shaft 1b. When the rotary drive mechanism 1d is operated, the rotary drive mechanism 1d drives the hollow rotating shaft 1b to rotate, and the hollow rotating shaft 1b drives the multiple annular fins 1a to rotate. One end of the hollow rotating shaft 1b is connected to the hot air supply device, while the other end of the hollow rotating shaft 1b is directly connected to the cooling device, or can be connected to the hollow rotating shaft 1b on another rotary evaporator 1.

[0042] The tank body 1c is a motor connected to the hollow rotating shaft 1b through a sprocket set, so that the tank body 1c can drive the hollow rotating shaft 1b to rotate.

[0043] Each of the two V-shaped blocks 6a is clamped on both sides of one of the annular fins 1a. By this clamping mode, the scraper 6 can be more stable and tight between the annular fins 1a, and when the annular fins 1a rotates, the scraper 6 is prevented from being separated therefrom.

[0044] The outer edge of the annular wing 1a is provided with a plurality of dividing strips 1a2, which are staggered with the plurality of triangular boxes 1a1. The dividing strips 1a2 ensure that when the solution in the triangular boxes 1a1 flows out, it will flow toward the center along the guiding effect of the dividing strips 1a2, rather than flowing directly along the edges.

[0045] During use, waste sulfuric acid is added to 1c. The annular vanes 1a rotate, evaporating the waste sulfuric acid. The vapor enters the gas-liquid separator 2, while the sulfate adheres to the inner wall of the rotary evaporator 1. A horizontal push mechanism 4 then pushes the scraper 6 to engage the annular vanes 1a, sealing the guide box 1c1 with the curved baffle 5. The scraper 6 then cleans the inner wall of the tank 1c. During the rotation, aqueous solution is added to 1c. Once cleaned, the sulfuric acid is discharged along with the aqueous solution.

[0046] This waste sulfuric acid rotary evaporation device automatically engages the scraper 6 with the annular fin 1a when cleaning is required. This allows the annular fin 1a to not only evaporate the waste sulfuric acid solution but also drive the scraper 6 in rotation. This allows the bottom edge of the tank to be cleaned without any openings at the bottom of the tank. Furthermore, the triangular box 1a1, in addition to engaging with the scraper 6, also removes the waste sulfuric acid solution as the annular fin rotates, allowing the waste sulfuric acid solution to remain in contact with the annular fin, effectively applying heat to the waste sulfuric acid.

[0047] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A waste sulfuric acid rotary evaporation treatment device, characterized in that: The invention comprises a rotary evaporator (1) and a gas-liquid separator (2) installed on the top of the rotary evaporator (1). The gas-liquid separator (2) is used to absorb water vapor evaporated in the rotary evaporator (1). The rotary evaporator (1) comprises a tank body (1c) and an annular fin (1a) capable of rotating and generating heat inside the tank body (1c). A gap is left between the annular fin (1a) and the inner wall of the tank body (1c). Both sides of each annular fin (1a) are provided with a plurality of triangular boxes (1a1) evenly distributed along the circumference thereof.

2. A waste sulfuric acid rotary evaporation treatment device according to claim 1, characterized in that, In order to process the crystals on the inner wall, the invention also includes a horizontal pushing mechanism (4), an arc-shaped baffle (5) and a scraper (6). The arc-shaped baffle (5) is tightly attracted to the scraper (6) by a strong magnet (5a). The strong magnet (5a) is fixedly arranged on the arc-shaped baffle (5). A guide box (1c1) connected to the inside of the tank body (1c) is arranged on the side of the tank body (1c). The circumferential contour of the arc-shaped baffle (5) contacts the inner contour of the guide box (1c1). The horizontal pushing mechanism (4) is used to push the arc-shaped baffle (5) toward the annular wing (1a). A plurality of V-shaped blocks (6a) that are clamped with the end of the triangular box (1a1) are fixedly arranged on the scraper (6). The plurality of V-shaped blocks (6a) are evenly distributed along the length direction of the scraper (6). When the V-shaped blocks (6a) are clamped with the triangular box (1a1), the inner contour of the arc-shaped baffle (5) fits the inner contour of the tank body (1c).

3. A waste sulfuric acid rotary evaporation treatment device as claimed in claim 2, characterized in that: An elastic seat (7) is provided between the arc baffle (5) and the push plate (4a) of the horizontal pushing mechanism (4); an external pulling mechanism (8) is fixedly installed on the arc baffle (5); an insertion shaft (10) is inserted between the push plate (4a), the arc baffle (5) and the scraper (6); the external pulling mechanism (8) is used to pull the insertion shaft (10) out of the scraper (6) in the opposite direction when the push plate (4a) moves toward the arc baffle (5); an extension column is provided on the arc baffle (5); a circular baffle (9) is fixedly provided at one end of the extension column passing through the insertion shaft (10); when the V-shaped clamping block (6a) is clamped with the triangular box (1a1), one side of the circular baffle (9) contacts the end of the guide slide box (1c1).

4. A waste sulfuric acid rotary evaporation treatment device as claimed in claim 3, characterized in that: The external pulling mechanism (8) includes a hinged rod (8a), a rotating seat (8b), a sliding column (8c) and a spring (8d). A baffle is provided on the outer edge of the plug shaft (10). The spring (8d) is used to exert elastic force on the baffle of the plug shaft (10) to approach the arc baffle (5). The baffle is fixedly connected to the sliding column (8c). A waist-shaped hole for sliding the sliding column (8c) is provided on the hinged rod (8a). The middle part of the hinged rod (8a) is hinged to the rotating seat (8b), and one end of the hinged rod (8a) contacts the push plate (4a).

5. A waste sulfuric acid rotary evaporation treatment device as claimed in claim 3, characterized in that: The elastic seat (7) includes a guide column (7a) and a second spring (7b), one end of the guide column (7a) is fixedly connected to the arc-shaped baffle (5), the other end of the guide column (7a) passes through the push plate (4a), and a limit plate is fixedly provided on the other end of the guide column (7a), and the second spring (7b) is used to apply an elastic force to the push plate (4a) away from the arc-shaped baffle (5).

6. A waste sulfuric acid rotary evaporation treatment device as claimed in claim 3, characterized in that: The horizontal pushing mechanism (4) comprises an electric push rod (4b) and a second hinge rod (4c); an extension plate hinged to one end of the second hinge rod (4c) is provided on the side of the push plate (4a); and the other end of the second hinge rod (4c) is hinged to the output end of the electric push rod (4b).

7. A waste sulfuric acid rotary evaporation treatment device according to claim 1, characterized in that: The rotary evaporator (1) and the gas-liquid separator (2) are both in multiple groups. Two symmetrical liquid exchange pipes (1c2) are fixedly provided on each tank body (1c), and a gate mechanism (3) is connected between the two liquid exchange pipes (1c2).

8. A waste sulfuric acid rotary evaporation treatment device according to claim 1, characterized in that: The rotary evaporator (1) comprises a hollow rotary shaft (1b) and a rotary drive mechanism (1d); the hollow rotary shaft (1b) is located in the middle of a tank body (1c), and the hollow rotary shaft (1b) is rotatably connected to the middle of the tank body (1c); an air outlet hole communicating with the interior of an annular wing (1a) is provided on the hollow rotary shaft (1b); the rotary drive mechanism (1d) is fixedly mounted on the rotary evaporator (1); and a rotating end of the rotary drive mechanism (1d) is fixedly connected to the hollow rotary shaft (1b).

9. A waste sulfuric acid rotary evaporation treatment device according to claim 2, characterized in that: The inner sides of each of the two V-shaped clamping blocks (6a) are clamped to the two sides of one of the annular wings (1a).

10. The waste sulfuric acid rotary evaporation treatment device according to claim 1, characterized in that: A plurality of splitting guide bars (1a2) are provided on the outer edge of the end portion of the annular wing (1a), and the plurality of splitting guide bars (1a2) and the plurality of triangular boxes (1a1) are distributed in an alternating manner.

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