A vinyl sulfate capturing device

Abstract

The utility model belongs to evaporative condensing equipment technical field, concretely is a kind of vinyl sulfate trapping device, including cylinder, is provided with the jacket for passing in cooling medium in cylinder outside, the cylinder and jacket are made of stainless steel;Stripping device is provided in the inside of cylinder, the stripping device includes rotating shaft, is provided with scraper assembly on rotating shaft, the scraper assembly includes support and stripping blade, the stripping blade is fixed on rotating shaft by support;Stripping blade is close to the side of scraping portion of cylinder inner wall, the scraping portion is contacted with cylinder inner wall, and scraping portion is special-shaped structure.The utility model in the steel jacket pipe is used as cylinder, solid and durable, cylinder inside is equipped with stripping device, can automatically strip the solid product on the inner wall of cylinder, realizes connection production, improves production efficiency;The shape of the scraping portion of stripping blade is special-shaped, and it has certain elasticity, can be well combined with inner wall, guarantees stripping effect.

Description

Technical Field

[0001] This utility model relates to the field of evaporation and condensation equipment technology, specifically to a vinyl sulfate collection device. Background Technology

[0002] In chemical production, especially in the synthesis of fine chemicals and pharmaceutical intermediates, evaporation and sublimation are frequently used to separate and purify substances. For the gases produced by evaporation, traditional condensation and recovery processes are typically carried out in inclined or vertically installed shell-and-tube heat exchangers. The standard operation involves condensing the target component into a liquid, which then flows away automatically under gravity, restoring the condenser surface to its condensation function, thus enabling continuous operation. This "condensation-flow-recovery" model is suitable for most liquefiable materials.

[0003] However, the aforementioned purification techniques are not well-suited for special materials that directly sublimate from a gaseous state to a solid state during cooling, especially thermally unstable solids like vinyl sulfate. Vinyl sulfate has a melting point of 99°C, but it begins to decompose significantly at 120°C. Therefore, when recovering it from a high-temperature gas mixture, it cannot be condensed into a liquid first and then cooled to a solid; it must be directly sublimated into a solid on the inner wall of the collector. This presents a key challenge: the condensed solid adheres to the inner wall, and if not removed promptly, it forms an insulating layer, causing a sharp decrease in heat transfer efficiency. This prevents the subsequent vinyl sulfate from being effectively cooled, leading to decomposition and deterioration (visually manifested as a change in color from yellow to black).

[0004] In existing technologies, multiple simple traps connected in parallel and used alternately are typically employed in conjunction with scraped evaporators for the purification of vinyl sulfate. Specifically, under a high vacuum environment, vinyl sulfate gas generated by the scraped evaporator is fed into a simple trap, which is a large-diameter jacketed glass tube installed at an angle. A cooling medium (such as cold water) is circulated through the jacket. The high-temperature gas containing vinyl sulfate passes through the glass tube, and upon cooling, the vinyl sulfate gas sublimates into a solid on the inner wall. However, since there is no built-in automatic stripping mechanism, the operator needs to visually observe the solid deposition inside the tube. When the deposited vinyl sulfate solid begins to change color due to deteriorated heat transfer, the gas flow into the trap is stopped. Then, this device is removed from the system, and the solid on the inner wall is manually dissolved and cleaned using a solvent (such as acetone or ethanol). The solution is collected in a designated container, and the trap is reinstalled for future use. To maintain the continuous operation of the scraped evaporator, multiple (e.g., three or more) such traps must be configured to work in parallel. When one trap is saturated with solid deposits and stops cleaning, another trap is put into operation, thus enabling cyclical switching.

[0005] However, the purification process of vinyl sulfate using the above methods results in a small amount of material collected per batch, requiring frequent switching between multiple collection devices, which is cumbersome and inefficient. Furthermore, the collection devices are made of glass, which has poor temperature resistance and is easily damaged. Therefore, this application aims to provide a collection device that can instantly and automatically remove solid vinyl sulfate from the inner wall of a container, enabling continuous, stable, and efficient production. Utility Model Content

[0006] The purpose of this invention is to overcome some shortcomings of the existing technology and provide a vinyl sulfate collection device that can achieve the effects of "self-peeling, continuous operation, and high pressure resistance".

[0007] The technical solution of this utility model is: a vinyl sulfate collection device, including a cylinder, with a jacket for introducing a cooling medium outside the cylinder, both the cylinder and the jacket being made of stainless steel; a peeling device is provided inside the cylinder, the peeling device including a rotating shaft, a scraper assembly being provided on the rotating shaft, the scraper assembly including a bracket and a peeling scraper, the peeling scraper being fixed on the rotating shaft by the bracket; a scraping part is provided on the side of the peeling scraper near the inner wall of the cylinder, the scraping part contacting the inner wall of the cylinder, the scraping part having an irregular shape.

[0008] Furthermore, the scraping part is made of stainless steel.

[0009] Furthermore, the scraping part has a steel wire ball-like structure or a grater-like structure. The grater structure refers to a sheet structure with holes or cutting edges of a specific shape; preferably, the scraping part is a wavy or serrated thin sheet.

[0010] Furthermore, the scraping part is composed of multiple wavy thin plates arranged together, with one side of the thin plates adhering to the inner wall of the cylinder, and the thin plates being set at an angle to the inner wall of the cylinder.

[0011] Furthermore, the angle formed between the thin sheet and the inner wall of the cylinder ranges from 10 to 15 degrees, and the angle formed by each thin sheet can be the same or different.

[0012] Furthermore, there are multiple scraper assemblies, which are arranged in layers on the rotating shaft, and the scraper assemblies in the same layer have the same installation height.

[0013] Furthermore, the scraper assemblies of the same layer are evenly spaced on the rotating shaft, and the peeling blades of adjacent scraper assemblies are staggered vertically.

[0014] Furthermore, the peeling blades of adjacent scraper assemblies are provided with a certain overlap length, so that the working coverage areas of adjacent scraper assemblies overlap.

[0015] Furthermore, the rotating shaft is driven by a magnetic drive mechanism. This mechanism includes a driving magnetic rotor located outside the cylinder and a driven magnetic rotor located inside the cylinder and fixedly connected to the rotating shaft. The driving magnetic rotor is connected to a motor, and torque is transmitted between the driving and driven magnetic rotors through magnetic coupling, thereby driving the rotating shaft to rotate. The magnetic drive mechanism transforms the dynamic seal into a static seal, eliminating the need for the rotating shaft to penetrate the cylinder, thus maximizing its airtightness and enabling the achievement of an ultimate vacuum environment.

[0016] Compared with the prior art, the advantages of this utility model are as follows: This utility model uses a steel jacketed tube as the collection container, which is sturdy and durable. The container is equipped with a peeling device inside, which can automatically peel off the solid products on the inner wall of the container, realize connected production, and improve production efficiency. Moreover, the rotating shaft in the peeling device is magnetically driven, and the rotating shaft does not need to penetrate the container, ensuring that its airtightness and vacuum degree meet the working requirements. Furthermore, the material of the scraper assembly can be made of corrosion-resistant stainless steel, and the peeling side of the peeling scraper is irregularly shaped, such as steel wire ball, shaving (filament) shape, or wavy thin sheet. The peeling scraper has a certain degree of elasticity and can fit well with the inner wall to ensure the peeling effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a partial structure of Embodiment 1 of this utility model; In the diagram: 1. Cylinder; 2. Jacket; 3. Rotating shaft; 4. Support; 5. Peeling scraper. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to specific embodiments. Methods or functional components not specifically described in the embodiments are all prior art. Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as commonly understood by those skilled in the art.

[0019] Example 1

[0020] like Figure 1 As shown, this embodiment is a vinyl sulfate collection device, including a cylinder 1, with a jacket 2 for introducing a cooling medium outside the cylinder 1. Both the cylinder 1 and the jacket 2 are made of stainless steel. A peeling device is provided inside the cylinder 1. The peeling device includes a rotating shaft 3, and a scraper assembly is provided on the rotating shaft 3. The scraper assembly includes a bracket 4 and a peeling scraper 5. The peeling scraper 5 is fixed on the rotating shaft 3 by the bracket 4. A scraping part is provided on the side of the peeling scraper 5 near the inner wall of the cylinder 1. The scraping part is in contact with the inner wall of the cylinder 1 and is made of stainless steel with a steel wire ball structure.

[0021] In this embodiment, there are multiple scraper assemblies, which are arranged in layers on the rotating shaft 3, with the same installation height for scraper assemblies in the same layer. The scraper assemblies in the same layer are evenly spaced on the rotating shaft 3, and the positions of the peeling scrapers 5 of adjacent scraper assemblies are staggered vertically. The peeling scrapers 5 of adjacent scraper assemblies have a certain overlap length, so that the working coverage areas of adjacent scraper assemblies overlap.

[0022] In this embodiment, the rotating shaft 3 is driven by a magnetic drive mechanism. The magnetic drive mechanism includes a driving magnetic rotor disposed outside the cylinder 1 and a driven magnetic rotor disposed inside the cylinder 1 and fixedly connected to the rotating shaft 3. The driving magnetic rotor is connected to a motor, and torque is transmitted between the driving magnetic rotor and the driven magnetic rotor through magnetic coupling, thereby driving the rotating shaft 3 to rotate. The rotating shaft 3 is driven by magnetic force, changing from a dynamic seal to a static seal. The rotating shaft 3 does not need to penetrate the cylinder 1, and its airtightness is improved to the greatest extent, enabling an ultimate vacuum environment.

[0023] In this embodiment, the vinyl sulfate collection device is driven by a magnetic drive mechanism to rotate the rotating shaft 3, which in turn drives the scraper assembly to rotate synchronously. The scraping part on the peeling scraper 5 scrapes the inner wall of the cylinder 1, removing the solid vinyl sulfate from the inner wall of the cylinder 1. Since the scraping part is a steel wire ball structure, it has a certain elasticity and can stick tightly to the inner wall of the cylinder 1 to ensure the peeling effect.

[0024] Example 2

[0025] The difference between this example and Embodiment 1 is that in this embodiment, the scraping part is composed of multiple wavy thin sheets arranged together. One side of each sheet is attached to the inner wall of the cylinder 1, and the sheet and the inner wall of the cylinder 1 are set at an angle. The angle formed between the sheet and the inner wall of the cylinder 1 ranges from 10 to 15 degrees, and the angle formed by each sheet is different. Those skilled in the art can understand these differences from the textual description, therefore, no further drawings are provided.

[0026] The above are only some embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various combinations and modifications of the aforementioned technical features. Any improvements, modifications, equivalent substitutions, or applications of the structure or method of the present utility model to other fields to achieve the same effect without departing from the spirit and scope of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A vinyl sulfate collection device, comprising a cylinder, with a jacket outside the cylinder for introducing a cooling medium, characterized in that: Both the cylinder and the jacket are made of stainless steel. A peeling device is provided inside the cylinder. The peeling device includes a rotating shaft and a scraper assembly on the rotating shaft. The scraper assembly includes a bracket and a peeling scraper. The peeling scraper is fixed on the rotating shaft by the bracket. A scraping part is provided on the side of the peeling scraper near the inner wall of the cylinder. The scraping part is in contact with the inner wall of the cylinder and has an irregular shape.

2. The vinyl sulfate collection device according to claim 1, characterized in that: The scraping part is made of stainless steel.

3. The vinyl sulfate collection device according to claim 1, characterized in that: The scraping part has a steel wire ball-like structure or a shaving tool-like structure.

4. The vinyl sulfate collection device according to claim 1, characterized in that: The scraping part is a thin sheet that is wavy or serrated.

5. The vinyl sulfate collection device according to claim 4, characterized in that: The scraping part is composed of multiple wavy thin plates arranged together, with one side of the thin plate adhering to the inner wall of the cylinder, and the thin plate and the inner wall of the cylinder being set at an angle.

6. The vinyl sulfate collection device according to claim 5, characterized in that: The angle between the thin sheet and the inner wall of the cylinder ranges from 10 to 15 degrees, and the angle formed by each thin sheet may be the same or different.

7. The vinyl sulfate collection device according to claim 1, characterized in that: There are multiple scraper assemblies, which are arranged in layers on the rotating shaft, and the scraper assemblies in the same layer have the same installation height.

8. The vinyl sulfate collection device according to claim 7, characterized in that: The scraper assemblies of the same layer are evenly spaced on the rotating shaft, and the peeling blades of the adjacent scraper assemblies are staggered vertically.

9. The vinyl sulfate collection device according to claim 7, characterized in that: The peeling blades of adjacent scraper assemblies have a certain overlap length, so that the working coverage areas of adjacent scraper assemblies overlap.

10. The vinyl sulfate collection device according to claim 1, characterized in that: The rotating shaft is driven by a magnetic drive mechanism. The magnetic drive mechanism includes a driving magnetic rotor located outside the cylinder and a driven magnetic rotor located inside the cylinder and fixedly connected to the rotating shaft. The driving magnetic rotor is connected to a motor, and the driving magnetic rotor and the driven magnetic rotor transmit torque through magnetic coupling, thereby driving the rotating shaft to rotate.

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