A refining and separating device for dimethyl disulfide production

Abstract

The utility model relates to dimethyl disulfide production technical field, the utility model provides a kind of refining separation device for dimethyl disulfide production, it includes: degassing tank and rectifying tower, rectifying tower is used to cooperate the refining of crude dimethyl disulfide of degassing tank, the top end of degassing tank is fixedly connected with support box, the middle part of support box is vertically rotatably connected with hollow shaft rod, and both sides of hollow shaft rod inside degassing tank are fixedly connected with positioning plate;Two support shaft rods, two support shaft rods are rotatably connected in one end of two positioning plates, and the outside of support shaft rod is fixedly connected with mounting frame, and the bottom of mounting frame is fixedly connected with liquid stirring roller;Adjusting assembly, adjusting assembly is assembled between two mounting frames. Through the above technical scheme, the technical problem that the lack of wide range of stirring measures in the prior art, resulting in crude dimethyl disulfide containing dissolved gas and other volatile impurities, is solved, and the transfer from liquid phase to gas phase is difficult to realize quickly.

Description

Technical Field

[0001] This utility model relates to the field of dimethyl disulfide production technology, specifically to a refining and separation device for dimethyl disulfide production. Background Technology

[0002] Dimethyl disulfide is an organic compound, a colorless to pale yellow liquid with a characteristic sulfurous odor. As an organic derivative of sulfur, dimethyl disulfide has wide applications in industrial and chemical synthesis.

[0003] Among them, the finished product dimethyl disulfide that meets the requirements for industrial or chemical applications is mainly obtained by degassing and distilling crude dimethyl disulfide.

[0004] However, in the degassing process of dimethyl disulfide, the lack of large-scale agitation measures results in the presence of dissolved gases and other volatile impurities in the crude dimethyl disulfide, making it difficult to quickly achieve the transfer from the liquid phase to the gas phase.

[0005] Based on this, we propose a refining and separation device for the production of dimethyl disulfide to solve the above problems. Utility Model Content

[0006] To overcome the above-mentioned defects, this utility model provides a refining and separation device for the production of dimethyl disulfide, which solves the technical problem in the prior art that the lack of large-scale stirring measures leads to the presence of dissolved gases and other volatile impurities in the crude dimethyl disulfide, making it difficult to quickly achieve the transfer from the liquid phase to the gas phase.

[0007] According to one aspect, at least one embodiment of the present invention provides a refining and separation apparatus for the production of dimethyl disulfide, comprising:

[0008] A degassing tank and a distillation column, wherein the distillation column is used in conjunction with the degassing tank to refine crude dimethyl disulfide; a support box is fixedly connected to the top of the degassing tank; a hollow shaft is vertically rotatably connected to the middle of the support box; and positioning plates are fixedly connected to both sides of the hollow shaft inside the degassing tank.

[0009] Two support shafts are rotatably connected to one end of two positioning plates, and a mounting frame is fixedly connected to the outer side of each support shaft. A stirring roller is fixedly connected to the bottom end of the mounting frame.

[0010] An adjustment assembly, which is mounted between two mounting frames, is used to change the agitation position of the agitation roller;

[0011] A transmission assembly, which is mounted on the top of the support box, is used to drive the stirring roller to rotate in conjunction with the hollow shaft.

[0012] For example, in a refining and separation apparatus for the production of dimethyl disulfide provided in at least one embodiment of this utility model, the regulating component includes:

[0013] A displacement rod is vertically slidably connected to the middle of a hollow shaft. A positioning frame is fixedly connected to one end of the displacement rod inside the degassing tank. Guide plates are fixedly connected to both ends of the top of the positioning frame. A guide groove is opened in the middle of the guide plate.

[0014] An eccentric plate is fixedly connected to the end of a support shaft, and the end of the eccentric plate away from the support shaft is movably connected to the corresponding guide groove.

[0015] A hydraulic cylinder is fixedly connected to the top of the support box. An adjustment frame is fixedly connected to the output end of the hydraulic cylinder, and the top end of the displacement rod is rotatably connected to the adjustment frame.

[0016] For example, in a refining and separation apparatus for the production of dimethyl disulfide provided in at least one embodiment of this utility model, the transmission component includes:

[0017] A drive motor is fixedly connected to the top of the support box. A drive spur gear is fixedly connected to the output end of the drive motor. A reduction spur gear is fixedly connected to the outer side of the hollow shaft, and the reduction spur gear meshes with the drive spur gear.

[0018] For example, in a refining and separation device for the production of dimethyl disulfide provided in at least one embodiment of the present invention, a plurality of temperature-conducting shells are fixedly connected to the inner wall of the degassing tank, and an electric heating wire is fixedly connected inside each of the temperature-conducting shells.

[0019] For example, in a refining and separation device for the production of dimethyl disulfide provided in at least one embodiment of the present invention, a vacuum pump is fixedly connected to one side of the degassing tank, a transmission pipe is fixedly connected to the input end of the vacuum pump, and the end of the transmission pipe away from the vacuum pump is also connected to the degassing tank.

[0020] For example, in a refining and separation device for the production of dimethyl disulfide provided in at least one embodiment of the present invention, a pressure sensor is fixedly connected to the top of the degassing tank, and the detection end of the pressure sensor extends into the interior of the degassing tank.

[0021] For example, in a refining and separating device for the production of dimethyl disulfide provided in at least one embodiment of the present invention, a limiting groove is provided on the inner wall of the top end of the hollow shaft, a limiting strip is fixedly connected to the top end of the outer side of the displacement rod, and the limiting strip is also slidably connected inside the limiting groove.

[0022] For example, in a refining and separation device for the production of dimethyl disulfide provided in at least one embodiment of the present invention, a plurality of sealing grooves are provided on the outer side of the displacement rod, and a sealing ring is fixedly connected inside each of the sealing grooves.

[0023] The beneficial effects of the embodiments of this utility model are as follows:

[0024] In this invention, the structural cooperation of the hollow shaft, the stirring roller and the transmission assembly can increase the turbulence inside the liquid during the degassing process of crude dimethyl disulfide, which helps to break the bubbles inside the liquid, accelerate the release of dissolved gas, and greatly improve the degassing efficiency of crude dimethyl disulfide.

[0025] In this invention, by adjusting the components, the working position of the stirring roller can be adjusted in conjunction with the vertical displacement of the displacement rod, thereby reducing the blind spot of the stirring roller. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0027] Figure 1 This is a schematic diagram of a refining and separation device for the production of dimethyl disulfide in one embodiment of the present invention;

[0028] Figure 2 for Figure 1 A side view of the degassing tank structure in the embodiment;

[0029] Figure 3 for Figure 1 A schematic diagram of the internal structure of the degassing tank in the embodiment;

[0030] Figure 4 for Figure 2 A schematic diagram of the assembly structure of the stirring roller in the embodiment;

[0031] Figure 5 for Figure 4 A schematic diagram of the separation structure of the hollow shaft and the displacement rod in the embodiment;

[0032] Figure 6 for Figure 5 An assembly diagram of the eccentric plate in the embodiment;

[0033] Figure 7 for Figure 4A schematic diagram of the connection structure between the displacement rod and the adjusting frame in the embodiment;

[0034] Figure 8 for Figure 5 The embodiment shows the assembly diagram of the limiting strip.

[0035] In the diagram: 1. Degassing tank; 2. Distillation column; 3. Support box; 4. Hollow shaft; 5. Positioning plate; 6. Support shaft; 7. Mounting frame; 8. Stirring roller; 9. Adjustment assembly; 10. Transmission assembly; 11. Displacement rod; 12. Positioning frame; 13. Guide plate; 14. Guide channel; 15. Eccentric plate; 16. Hydraulic cylinder; 17. Adjustment frame; 18. Drive motor; 19. Drive spur gear; 20. Reduction spur gear; 21. Temperature-conducting shell; 22. Electric heating wire; 23. Vacuum pump; 24. Transmission pipe; 25. Pressure sensor; 26. Limiting groove; 27. Limiting strip; 28. Sealing ring. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0037] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0038] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] like Figures 1-8 As shown, it illustrates a refining and separation apparatus for the production of dimethyl disulfide according to one embodiment of the present invention, comprising:

[0043] Degassing tank 1 and distillation column 2. Distillation column 2 is used to refine crude dimethyl disulfide in conjunction with degassing tank 1. A support box 3 is fixedly connected to the top of degassing tank 1. A hollow shaft 4 is vertically rotatably connected to the middle of the support box 3. Positioning plates 5 are fixedly connected to both sides of the hollow shaft 4 inside degassing tank 1.

[0044] Two support shafts 6 are rotatably connected to one end of two positioning plates 5 respectively. A mounting frame 7 is fixedly connected to the outside of the support shafts 6, and a stirring roller 8 is fixedly connected to the bottom end of the mounting frame 7.

[0045] Adjustment component 9, which is assembled between two mounting frames 7, is used to change the agitation position of the agitation roller 8;

[0046] Transmission assembly 10 is mounted on the top of support box 3 and is used to cooperate with hollow shaft 4 to drive the stirring roller 8 to rotate.

[0047] For example, such as Figure 1As shown, an injection pipe is fixedly connected to the top of the outer side of the degassing tank 1. Through the injection pipe, crude dimethyl disulfide can be conveniently introduced into the degassing tank 1. At the same time, an exhaust pipe is fixedly connected to the top of the degassing tank 1. Through the exhaust pipe, the gas can be concentrated and discharged from the degassing tank 1 for gas treatment. A discharge pipe is provided at the bottom of the degassing tank 1. Through the discharge pipe, the crude dimethyl disulfide inside the degassing tank 1 can be conveniently discharged. A transmission system is provided between the degassing tank 1 and the distillation column 2, so that the crude dimethyl disulfide can be sent into the distillation column 2 for purification.

[0048] More specifically, in this embodiment, the distillation column 2 includes:

[0049] Tower body: Made of stainless steel, aluminum or other corrosion-resistant materials, used to contain materials to be separated.

[0050] Packing: Packing is a solid material placed inside the tower, such as Raschig rings and Pall rings, which provide a large surface area for gas-liquid contact;

[0051] Heater: Located at the bottom of the tower, used to heat the material at the bottom of the tower, causing it to partially vaporize and providing rising steam.

[0052] Condenser: Located at the top of the column, it is used to condense the vapor coming out of the top of the column and recover the liquid product.

[0053] Reflux system: including reflux tank and reflux pump, used to return a portion of the condensate from the top of the column back into the column to maintain the liquid level and temperature inside the column.

[0054] Feeding system: Used to feed the degassed dimethyl disulfide into the tower.

[0055] Furthermore, from the bottom to the top of the column, the temperature gradually decreases, forming a temperature gradient due to the heat supplied by the heater and the heat removed by the condenser. Volatile components accumulate at the top because they are more easily vaporized and rise with the vapor. Less volatile components accumulate at the bottom because they are less easily vaporized and remain more in the liquid phase. The reflux liquid provides additional liquid phase, helping to maintain the gas-liquid balance within the column and increasing separation efficiency.

[0056] In summary, distillation column 2 is a mature existing technology, and will not be elaborated further here;

[0057] For example, such as Figure 3As shown, multiple temperature-conducting shells 21 are fixedly connected to the inner wall of the degassing tank 1. Each temperature-conducting shell 21 is fixedly connected to an electric heating wire 22. The electric heating wire 22 is mounted on the temperature-conducting shell 21. The heat generated by the electric heating wire 22 during operation can be introduced into the crude dimethyl disulfide in the degassing tank 1 through the temperature-conducting shell 21, thereby reducing its viscosity, accelerating gas release, and allowing the crude dimethyl disulfide to be preheated to near its boiling point after degassing before being introduced into the distillation column 2 for distillation.

[0058] More specifically, in order to obtain the real-time temperature of crude dimethyl disulfide, a temperature sensor is also installed inside the degassing tank 1.

[0059] For example, such as Figure 2 As shown, a vacuum pump 23 is fixedly connected to one side of the degassing tank 1. A transmission pipe 24 is fixedly connected to the input end of the vacuum pump 23, and the end of the transmission pipe 24 away from the vacuum pump 23 is also connected to the degassing tank 1. By setting up the vacuum pump 23, the vacuum level inside the degassing tank 1 can be adjusted in conjunction with the transmission pipe 24 until the gas release is reduced to an acceptable level.

[0060] For example, such as Figure 2 As shown, a pressure sensor 25 is fixedly connected to the top of the degassing tank 1, and the detection end of the pressure sensor 25 extends into the interior of the degassing tank 1. By setting the pressure sensor 25, the absolute pressure inside the degassing tank 1 can be measured, and the vacuum degree inside the degassing tank 1 can be calculated by the difference between the pressure sensor 25 and the atmospheric pressure.

[0061] For example, such as Figures 4-7 As shown, the adjustment component 9 includes:

[0062] The displacement rod 11 is vertically slidably connected to the middle of the hollow shaft rod 4. One end of the displacement rod 11 located inside the degassing tank 1 is fixedly connected to a positioning frame 12. Both ends of the top of the positioning frame 12 are fixedly connected to guide plates 13. A guide groove 14 is opened in the middle of the guide plate 13.

[0063] Eccentric plate 15 is fixedly connected to the end of the support shaft 6, and the end of eccentric plate 15 away from the support shaft 6 is also movably connected to the corresponding guide groove 14.

[0064] Hydraulic cylinder 16 is fixedly connected to the top of support box 3. The output end of hydraulic cylinder 16 is fixedly connected to adjustment frame 17, and the top of displacement rod 11 is also rotatably connected to adjustment frame 17.

[0065] For example, such as Figure 8As shown, a limiting groove 26 is provided on the inner wall of the top of the hollow shaft 4. A limiting strip 27 is fixedly connected to the top of the outer side of the displacement rod 11, and the limiting strip 27 is also slidably connected inside the limiting groove 26. Through the structural cooperation of the limiting groove 26 and the limiting strip 27, the vertical displacement of the displacement rod 11 can be guided. Since the limiting strip 27 is located inside the limiting groove 26, when the hollow shaft 4 rotates, the displacement rod 11 can be driven to rotate synchronously with the help of the limiting strip 27, thus avoiding motion interference.

[0066] For example, such as Figure 8 As shown, multiple sealing grooves are provided on the outer side of the displacement rod 11, and a sealing ring 28 is fixedly connected inside each sealing groove. The sealing ring 28 is assembled through the sealing groove. After the displacement rod 11 slides along the hollow shaft 4, the sealing ring 28 can seal the connection gap between the displacement rod 11 and the hollow shaft 4, thereby achieving dynamic sealing after the displacement rod 11 is adjusted, and preventing the leakage of substances in the degassing tank 1. Here, the material of the sealing ring 28 can be rubber.

[0067] For example, such as Figure 7 As shown, the transmission assembly 10 includes:

[0068] A drive motor 18 is fixedly connected to the top of the support box 3. A drive spur gear 19 is fixedly connected to the output end of the drive motor 18. A reduction spur gear 20 is fixedly connected to the outer side of the hollow shaft 4, and the reduction spur gear 20 meshes with the drive spur gear 19.

[0069] In this embodiment, a PLC controller is also included, and the hydraulic cylinder 16, drive motor 18, electric heating wire 22, temperature sensor, vacuum pump 23 and pressure sensor 25 are all electrically connected to the PLC controller. Through the configuration of the PLC controller, the above components can be centrally controlled, which greatly improves the overall integration.

[0070] Working principle: First, a crude dimethyl disulfide transfer system is established between the degassing tank 1 and the distillation column 2. Then, the crude dimethyl disulfide is introduced into the degassing tank 1 and concentrated. The electric heating wire 22 is activated, and the heat generated by the electric heating wire 22 is used to introduce the crude dimethyl disulfide into the degassing tank 1 through the temperature conducting shell 21. The viscosity of the crude dimethyl disulfide is reduced by raising its temperature. The vacuum pump 23 can be activated to adjust the vacuum level inside the degassing tank 1 through the transfer pipe 24 until the gas release is reduced to an acceptable level. Then, the drive motor 18 is activated, which causes the drive spur gear 19 to drive the reduction spur gear 20. This drives the stirring roller 8 to revolve along the hollow shaft 4 through the hollow shaft 4 and the positioning plate 5. This stirs the crude dimethyl disulfide in the degassing tank 1, increases the turbulence inside the liquid, helps to break the bubbles inside the liquid, accelerates the release of dissolved gas, prevents local overheating, and ensures uniform temperature distribution.

[0071] The hydraulic cylinder 16 can be activated, and the adjusting frame 17 can be used to drive the displacement rod 11 to move vertically at the hollow shaft 4, thereby changing the position of the positioning frame 12 inside the degassing tank 1. Since the end of the eccentric plate 15 away from the support shaft 6 is also movably connected inside the guide channel 14, when the position of the positioning frame 12 changes, the eccentric plate 15 can be pressed or pushed by the guide plate 13. Since the eccentric plate 15 is supported by the support shaft 6, it can drive the stirring roller 8 to rotate through the support shaft 6 and the mounting frame 7, adjusting the angle between the stirring roller 8 and the positioning plate 5, thereby changing the working position of the stirring roller 8 and reducing the blind spot of the stirring roller 8. After the crude dimethyl disulfide is degassed, the degassed crude dimethyl disulfide is sent to the distillation column 2 through the transmission system, so as to refine the crude dimethyl disulfide through the distillation column 2 and realize the purification of dimethyl disulfide.

[0072] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A refining separation device for dimethyl disulfide production, characterized by, include: A degassing tank (1) and a distillation column (2) are provided. The distillation column (2) is used in conjunction with the degassing tank (1) to form crude dimethyl disulfide. A support box (3) is fixedly connected to the top of the degassing tank (1). A hollow shaft (4) is vertically rotatably connected to the middle of the support box (3). Positioning plates (5) are fixedly connected to both sides of the hollow shaft (4) inside the degassing tank (1). Two support shafts (6) are rotatably connected to one end of two positioning plates (5), and a mounting frame (7) is fixedly connected to the outside of the support shafts (6). A stirring roller (8) is fixedly connected to the bottom end of the mounting frame (7). Adjustment component (9), which is mounted between two mounting frames (7), is used to change the stirring position of the stirring roller (8); The transmission assembly (10) is mounted on the top of the support box (3) and is used to cooperate with the hollow shaft (4) to drive the stirring roller (8) to rotate.

2. The refining and separating device for dimethyl disulfide production according to claim 1, characterized in that, The adjustment component (9) includes: The displacement rod (11) is vertically slidably connected to the middle of the hollow shaft (4). The displacement rod (11) is fixedly connected to a positioning frame (12) at one end inside the degassing tank (1). Both ends of the top of the positioning frame (12) are fixedly connected to guide plates (13). A guide slot (14) is provided in the middle of the guide plate (13). An eccentric plate (15) is fixedly connected to the end of the support shaft (6), and the end of the eccentric plate (15) away from the support shaft (6) is also movably connected to the corresponding guide groove (14). The hydraulic cylinder (16) is fixedly connected to the top of the support box (3). The output end of the hydraulic cylinder (16) is fixedly connected to the adjustment frame (17), and the top of the displacement rod (11) is also rotatably connected to the adjustment frame (17).

3. The refining and separating device for dimethyl disulfide production according to claim 1, characterized in that, The transmission assembly (10) includes: A drive motor (18) is fixedly connected to the top of the support box (3). A drive spur gear (19) is fixedly connected to the output end of the drive motor (18). A reduction spur gear (20) is fixedly connected to the outer side of the hollow shaft (4), and the reduction spur gear (20) meshes with the drive spur gear (19).

4. The refining and separating device for dimethyl disulfide production according to claim 1, characterized in that, The inner wall of the degassing tank (1) is fixedly connected with a plurality of temperature-conducting shells (21), and an electric heating wire (22) is fixedly connected inside each of the temperature-conducting shells (21).

5. The refining and separating device for dimethyl disulfide production according to claim 1, characterized in that, A vacuum pump (23) is fixedly connected to one side of the degassing tank (1). A transmission pipe (24) is fixedly connected to the input end of the vacuum pump (23), and the end of the transmission pipe (24) away from the vacuum pump (23) is also connected to the degassing tank (1).

6. The refining and separating device for dimethyl disulfide production according to claim 1, characterized in that, A pressure sensor (25) is fixedly connected to the top of the degassing tank (1), and the detection end of the pressure sensor (25) extends into the interior of the degassing tank (1).

7. The refining and separating apparatus for dimethyl disulfide production according to claim 2, wherein The inner wall of the top of the hollow shaft (4) is provided with a limiting groove (26), and the top of the outer side of the displacement rod (11) is fixedly connected to a limiting strip (27), and the limiting strip (27) is also slidably connected inside the limiting groove (26).

8. The refining and separating apparatus for dimethyl disulfide production according to claim 2, wherein The displacement rod (11) has multiple sealing grooves on its outer side, and each sealing groove is fixedly connected with a sealing ring (28).

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