Reaction kettle for recycling 3-hydroxypropionitrile

Abstract

The utility model relates to the technical field of 3-hydroxypropionitrile recovery, in particular to a reaction kettle for 3-hydroxypropionitrile recovery, which comprises a kettle body, a heat conduction component, a cyclic heating component and a stirring component, the heat conduction component is arranged inside the kettle body, and the cyclic heating component is connected with the heat conduction component. The outer wall of the reaction kettle is heated through the heat conduction side pipes, heat can be evenly distributed on the side face of the kettle body, meanwhile, the multiple heat conduction inner pipes are inserted into the reaction kettle in a penetrating mode, and the interior of a solution can be directly heated. The heat conduction side pipe and the heat conduction inner pipe are combined, the inside and the outside are heated at the same time through the external heat source, high efficiency of heat transfer is ensured, the external heat source can be quickly transferred to different areas of the reaction kettle through the pipeline system due to cooperation of the heat conduction side pipe and the heat conduction inner pipe, and heat is not limited to a certain part through the multi-pipeline structure. However, the heat is quickly spread into the whole reaction kettle through an omnibearing pipeline network, so that the heat conduction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of 3-hydroxypropionitrile recovery technology, and in particular to a reaction vessel for 3-hydroxypropionitrile recovery. Background Technology

[0002] 3-Hydroxypropionitrile is an important organic chemical intermediate commonly used in the synthesis of various chemicals. Its recovery process typically involves certain chemical reactions, which can be carried out in a reaction vessel.

[0003] Currently, most existing reactors for recovering 3-hydroxypropionitrile use distillation technology, which separates the various substances in the solution by utilizing their different boiling points. However, when heating the solution containing 3-hydroxypropionitrile, the side wall or bottom of the reactor is usually heated. When there is a large amount of solution inside the reactor, it is difficult to achieve uniform heating, resulting in low recovery efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that it is difficult to achieve uniform heating, resulting in low recycling efficiency. It provides a 3-hydroxypropionitrile recovery reactor with a multi-pipe structure, so that heat is not limited to a certain part, but is rapidly spread to the entire interior of the reactor through a comprehensive pipeline network.

[0005] To achieve the above objectives, this utility model provides a reaction vessel for the recovery of 3-hydroxypropionitrile, comprising:

[0006] The vessel comprises a vessel body, a heat-conducting component, a circulating heating component, and a stirring component. The heat-conducting component is disposed inside the vessel body. The circulating heating component is connected to the heat-conducting component, and the stirring component is disposed inside the heat-conducting component. The heat-conducting component includes a heat-conducting side tube and multiple heat-conducting inner tubes. The heat-conducting side tube is connected to the side wall of the vessel body. The heat-conducting side tube is connected to the heat-conducting inner tubes through a first connecting pipe. The multiple heat-conducting inner tubes are disposed inside the vessel body. Adjacent heat-conducting inner tubes are connected to each other through a second connecting pipe. One end of the heat-conducting side tube is connected to a liquid inlet pipe, and one end of the heat-conducting inner tube is connected to a liquid outlet pipe.

[0007] As a further description of the above technical solution: the heat-conducting side tube is a serpentine bend, and the plurality of heat-conducting inner tubes are arranged vertically, and the plurality of heat-conducting inner tubes are all annular heat-conducting tubes.

[0008] As a further description of the above technical solution: the circulating heating component includes a storage tank, and the storage tank is equipped with a liquid pump and a heating tank. The liquid pump is connected to the liquid inlet pipe through a drain pipe, and the storage tank is connected to the liquid outlet pipe through a return pipe.

[0009] As a further description of the above technical solution: the stirring assembly includes a drive motor, the lower part of which is connected to a stirring shaft, and a stirring rod and an auger are connected to the stirring shaft.

[0010] As a further description of the above technical solution: both sides of the drive motor are connected to forward and reverse motors, one end of the forward and reverse motors is connected to a gear, the gear meshes with a gear plate, the gear plate is connected inside the protective shell, and the lower part of the protective shell is connected to the vessel body.

[0011] As a further description of the above technical solution: a top cover is connected to the vessel body, and a packing pipe and a gas pipe are provided on the top cover.

[0012] As a further description of the above technical solution: a limiting rod is connected above the drive motor, the limiting rod is slidably connected to the limiting cylinder, and the upper part of the limiting cylinder is connected to the protective shell.

[0013] As a further description of the above technical solution: the stirring shaft is located inside the heat-conducting inner tube.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] This invention uses heat-conducting side pipes to heat the outer wall of the reactor, allowing heat to be evenly distributed along the sides of the vessel. Simultaneously, multiple heat-conducting inner pipes are inserted inside the reactor, directly heating the interior of the solution. This combination of external heat source and internal heating ensures highly efficient heat transfer. Due to the cooperation of the heat-conducting side pipes and inner pipes, the external heat source can be rapidly transferred to different areas of the reactor through this pipe system. This multi-pipe structure prevents heat from being confined to a single location, but rather rapidly spreads throughout the entire reactor via a comprehensive pipe network, thereby improving heat conduction efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the recycling reactor in one embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of a recycling reactor in one embodiment of the present invention;

[0018] Figure 3 for Figure 2 Schematic diagram of the stirring assembly;

[0019] Figure 4 for Figure 2 Schematic diagram of the middle tooth plate;

[0020] Figure 5 for Figure 2 A schematic diagram of the middle limiting cylinder.

[0021] Legend:

[0022] 1. Kettle body; 2. Heat-conducting component; 3. Circulating heating component; 4. Stirring component; 5. Forward and reverse motors; 6. Gear; 7. Gear plate; 8. Protective shell; 9. Top cover; 10. Packing tube; 11. Gas pipe; 12. Limiting rod; 13. Limiting cylinder; 201. Heat-conducting side tube; 202. Heat-conducting inner tube; 203. First connecting pipe; 204. Second connecting pipe; 205. Liquid inlet pipe; 206. Liquid outlet pipe; 31. Storage tank; 32. Liquid pump; 33. Heating box; 34. Drain pipe; 35. Return pipe; 41. Drive motor; 42. Stirring shaft; 43. Stirring rod; 44. Screwdriver. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] like Figure 1-5As shown, the 3-hydroxypropionitrile recovery reactor of this utility model includes a reactor body 1, a heat-conducting component 2, a circulating heating component 3, and a stirring component 4. The heat-conducting component 2 is disposed inside the reactor body 1, the circulating heating component 3 is connected to the heat-conducting component 2, and the stirring component 4 is disposed inside the heat-conducting component 2. The heat-conducting component 2 includes a heat-conducting side tube 201 and multiple heat-conducting inner tubes 202. The heat-conducting side tube 201 is connected to the side wall of the reactor body 1, and the heat-conducting side tube 201 is connected to the heat-conducting inner tubes 202 through a first connecting pipe 203. The multiple heat-conducting inner tubes 202 are all disposed inside the reactor body 1, and adjacent heat-conducting inner tubes 202 are connected to each other through a second connecting pipe 204. One end of the heat-conducting side tube 201 is connected to an inlet pipe 205, and one end of the heat-conducting inner tube 202 is connected to an outlet pipe 206.

[0027] In this invention, the outer wall of the reactor is heated by the heat-conducting side pipe 201, allowing heat to be evenly distributed on the side of the reactor. Simultaneously, multiple heat-conducting inner pipes 202 are inserted inside the reactor, directly heating the interior of the solution. This combination of methods, using an external heat source to heat both the interior and exterior simultaneously, ensures highly efficient heat transfer. Due to the cooperation of the heat-conducting side pipe 201 and the heat-conducting inner pipes 202, the external heat source can be rapidly transferred to different areas of the reactor through this pipe system. This multi-pipe structure prevents heat from being confined to a single area, allowing it to spread rapidly throughout the entire reactor via a comprehensive pipe network, thus improving heat conduction efficiency. The multi-pipe heating design ensures a more even distribution of heat inside the reactor, avoiding temperature inhomogeneity. This uniform temperature distribution contributes to the stability of the reaction process, ensuring a consistent reaction rate and preventing localized overheating or overcooling, thereby improving reaction efficiency.

[0028] Specifically, the heat-conducting side tube 201 is a serpentine bend, and multiple heat-conducting inner tubes 202 are arranged vertically, all of which are annular heat-conducting tubes. By employing a serpentine bend design for the heat-conducting side tube 201 and annular heat-conducting tubes for the inner tubes 202, the surface area for heat conduction is increased, further improving heat exchange efficiency. Due to the serpentine bend structure, a longer heat conduction path can be provided within a limited space, thereby more effectively transferring external heat sources to the interior of the reactor and improving thermal energy utilization efficiency.

[0029] The vessel body 1 is connected to a top cover 9, and the top cover 9 is equipped with a packing pipe 10 and a gas pipe 11.

[0030] like Figure 1 and Figure 2As shown, specifically, the circulating heating component 3 includes a storage tank 31, inside which is a pump 32 and a heating tank 33. The pump 32 is connected to the inlet pipe 205 through a drain pipe 34, and the storage tank 31 is connected to the outlet pipe 206 through a return pipe 35. The heating tank 33 can heat the heat transfer medium inside the storage tank 31, and the pump 32 can pump the heat transfer medium into the heat transfer component 2. The heat transfer medium flows back to the storage tank 31 through the return pipe 35, realizing circulating heating and enhancing the heating effect.

[0031] like Figure 2 and Figure 3 As shown, specifically, the stirring assembly 4 includes a drive motor 41, which is connected to a stirring shaft 42 at its lower end. A stirring rod 43 and an auger 44 are connected to the stirring shaft 42. When the drive motor 41 operates, it can drive the stirring shaft 42 to rotate, which in turn drives the stirring rod 43 and the auger 44 to rotate. The rotation of the stirring rod 43 and the auger 44 can stir the solution inside the vessel 1, thereby accelerating the reaction evaporation efficiency.

[0032] The stirring shaft 42 is located inside the heat-conducting inner tube 202.

[0033] like Figure 3 and Figure 4 As shown, specifically, both sides of the drive motor 41 are connected to forward and reverse motors 5. One end of the forward and reverse motor 5 is connected to a gear 6, and the gear 6 meshes with a toothed plate 7. The toothed plate 7 is connected inside the protective shell 8, and the lower part of the protective shell 8 is connected to the vessel body 1. When the forward and reverse motors 5 work, they can drive the gear 6 to rotate, so that the gear 6 moves up and down on the toothed plate 7, which can drive the drive motor 41 and the stirring shaft 42 to rise and fall, and in turn drive the stirring rod 43 and the auger 44 to rise and fall. This allows the stirring rod 43 and the auger 44 to stir in the mixing tank 1 while also tumbling up and down, expanding the tumbling range and enhancing the stirring effect.

[0034] like Figure 2 and Figure 5 As shown, specifically, a limit rod 12 is connected above the drive motor 41, and the limit rod 12 is slidably connected to the limit cylinder 13. The upper part of the limit cylinder 13 is connected to the protective shell 8. The limit cylinder 13 can limit the limit rod 12, thereby enhancing the stability of the limit rod 12. The limit rod 12 can limit the drive motor 41, thereby enhancing the stability of the drive motor 41 when it is raised or lowered.

[0035] Working Principle: The outer wall of the reactor is heated by the heat-conducting side pipe 201, allowing heat to be evenly distributed along the side of the reactor. Simultaneously, multiple heat-conducting inner pipes 202 are inserted inside the reactor, directly heating the interior of the solution. This combination of external heat source and internal heating ensures highly efficient heat transfer. Due to the cooperation of the heat-conducting side pipe 201 and the heat-conducting inner pipes 202, the external heat source can be rapidly transferred to different areas of the reactor through this pipe system. This multi-pipe structure prevents heat from being confined to a single area, but rather rapidly spreads throughout the entire reactor via a comprehensive pipe network, thereby improving heat conduction efficiency. The multi-pipe heating design ensures more even heat distribution inside the reactor, avoiding temperature inhomogeneity. Uniform temperature distribution contributes to the stability of the reaction process, ensuring a consistent reaction rate and preventing localized overheating or overcooling, thus improving reaction efficiency.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A reaction vessel for recovering 3-hydroxypropionitrile, characterized in that, include: The vessel body (1); A heat-conducting component (2) is disposed inside the vessel body (1); A circulating heating component (3) is connected to the heat-conducting component (2); A stirring assembly (4) is disposed inside the heat-conducting assembly (2); The heat-conducting assembly (2) includes a heat-conducting side tube (201) and multiple heat-conducting inner tubes (202). The heat-conducting side tube (201) is connected to the side wall of the vessel body (1). The heat-conducting side tube (201) is connected to the heat-conducting inner tubes (202) through a first connecting pipe (203). Multiple heat-conducting inner tubes (202) are all arranged inside the vessel body (1). Adjacent heat-conducting inner tubes (202) are connected through a second connecting pipe (204). One end of the heat-conducting side tube (201) is connected to an inlet pipe (205), and one end of the heat-conducting inner tube (202) is connected to an outlet pipe (206).

2. The reactor for recovering 3-hydroxypropionitrile according to claim 1, characterized in that: The heat-conducting side tube (201) is a serpentine bend, and the multiple heat-conducting inner tubes (202) are arranged vertically, and the multiple heat-conducting inner tubes (202) are all annular heat-conducting tubes.

3. The reactor for recovering 3-hydroxypropionitrile according to claim 1, characterized in that: The circulating heating assembly (3) includes a storage tank (31), inside which is a liquid pump (32) and a heating tank (33). The liquid pump (32) is connected to the liquid inlet pipe (205) through a drain pipe (34), and the storage tank (31) is connected to the liquid outlet pipe (206) through a return pipe (35).

4. The reaction vessel for recovering 3-hydroxypropionitrile according to claim 1, characterized in that: The stirring assembly (4) includes a drive motor (41), which is connected to a stirring shaft (42) at the bottom. A stirring rod (43) and an auger (44) are connected to the stirring shaft (42).

5. The reaction vessel for recovering 3-hydroxypropionitrile according to claim 4, characterized in that: Both sides of the drive motor (41) are connected to a forward and reverse motor (5). One end of the forward and reverse motor (5) is connected to a gear (6). The gear (6) meshes with a toothed plate (7). The toothed plate (7) is connected inside the protective shell (8). The lower part of the protective shell (8) is connected to the vessel body (1).

6. The reaction vessel for recovering 3-hydroxypropionitrile according to claim 1, characterized in that: The vessel body (1) is connected to a top cover (9), and the top cover (9) is provided with a packing tube (10) and a gas tube (11).

7. The reactor for recovering 3-hydroxypropionitrile according to claim 5, characterized in that: A limiting rod (12) is connected above the drive motor (41), the limiting rod (12) is slidably connected to the limiting cylinder (13), and the upper part of the limiting cylinder (13) is connected to the protective shell (8).

8. The reactor for recovering 3-hydroxypropionitrile according to claim 4, characterized in that: The stirring shaft (42) is located inside the heat-conducting inner tube (202).

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