A reaction kettle for producing phosphorus pentachloride

Abstract

The utility model discloses a kind of reaction kettles for producing phosphorus pentachloride, including kettle body, the kettle body bottom is equipped with support leg for supporting it, kettle cover is detachably equipped on the kettle body top, feeding pipe is equipped on the kettle cover, the kettle body bottom is equipped with discharge pipe, first valve is equipped on the discharge pipe, annular gas distribution pipe is equipped on the kettle body inside bottom wall, further including lifting cylinder, lifting shaft, helical blade, stirring blade and inner wall cleaning assembly, cylinder shaft is equipped on the lifting cylinder top, the lifting cylinder is rotated and arranged on kettle cover by cylinder shaft, discharge port is equipped on the lifting cylinder upper portion, opening is equipped on the lifting cylinder bottom, the lifting shaft is rotated and arranged in lifting cylinder and passes out from opening portion. The utility model relates to the technical field of phosphorus pentachloride production, specifically provides a kind of reaction kettles for producing phosphorus pentachloride, which is uniformly stirred, gas is reasonably distributed, inner wall is self-cleaning and convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of phosphorus pentachloride production technology, specifically to a reaction vessel for producing phosphorus pentachloride. Background Technology

[0002] Phosphorus pentachloride is an important chemical intermediate widely used in the pharmaceutical, pesticide, and dye industries. Its production process typically involves the reaction of phosphorus with chlorine in a reactor. However, existing reactors for producing phosphorus pentachloride have the following shortcomings in practical applications: Traditional reactors have a simple stirring structure, which easily leads to uneven mixing of materials within the reactor and incomplete local reactions, affecting product purity and yield; during the reaction, some materials easily adhere to the reactor wall, forming a hardened insulating layer, which not only affects heat transfer efficiency but may also cause localized overheating and safety hazards, and is difficult to clean; chlorine and other reaction gases are difficult to diffuse evenly after introduction, resulting in insufficient contact with the phosphorus material and a low reaction rate. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a reaction vessel for the production of phosphorus pentachloride that features uniform stirring, reasonable gas distribution, self-cleaning inner wall, and convenient maintenance.

[0004] The technical solution adopted by this utility model is as follows: This utility model provides a reaction vessel for producing phosphorus pentachloride, including a vessel body, a support leg at the bottom of the vessel body for supporting it, a detachable vessel cover at the top of the vessel body, and a feeding pipe on the vessel cover.

[0005] The vessel body has a discharge pipe at the bottom, a first valve on the discharge pipe, and an annular gas distribution pipe on the inner bottom wall of the vessel body. It also includes a lifting cylinder, a lifting shaft, spiral blades, stirring blades, and an inner wall cleaning assembly. The lifting cylinder has a shaft at the top, and the lifting cylinder is rotatably mounted on the vessel cover via the shaft. The upper part of the lifting cylinder has a discharge port, and the bottom of the lifting cylinder has an opening. The lifting shaft is rotatably mounted inside the lifting cylinder and extends out through the opening. The spiral blades are sleeved on the lifting shaft, the stirring blades are located outside the lifting cylinder, and the inner wall cleaning assembly is located on the lifting cylinder.

[0006] Furthermore, a bracket is provided on the top of the vessel lid, and a motor is fixed on the bracket. One end of the lifting shaft rotates through the cylindrical shaft and is fixedly connected to the output shaft of the motor. A first pulley is sleeved on the lifting shaft. A driven shaft is rotatably provided on the bracket. A second pulley is sleeved on the driven shaft. A transmission belt is sleeved on the first pulley and the second pulley. A first gear is sleeved on the cylindrical shaft, and a second gear is sleeved on the driven shaft. The first gear and the second gear mesh.

[0007] Furthermore, the inner wall cleaning assembly includes an elastic telescopic rod and a scraper. The elastic telescopic rod is mounted on the lifting cylinder, and the scraper is mounted on the elastic telescopic rod and contacts the inner wall of the vessel.

[0008] Furthermore, the elastic telescopic rod includes a sleeve, a sliding rod, and a spring. The sleeve is disposed on the lifting cylinder, the spring is disposed inside the sleeve, the sliding rod is disposed on the spring and slidably connected to the sleeve, and the scraper is disposed on the sliding rod.

[0009] Furthermore, the upper part of the lifting cylinder is provided with a defoaming paddle.

[0010] Furthermore, the annular gas distribution pipe is provided with an air inlet pipe, which extends out from the bottom wall of the vessel body, and a second valve is provided on the air inlet pipe.

[0011] Furthermore, the lid is fixed to the top of the vessel body with bolts.

[0012] Furthermore, the inner wall cleaning assembly is provided in two symmetrical sets.

[0013] The beneficial effects of this utility model by adopting the above structure are as follows:

[0014] Even and thorough mixing: The material at the bottom of the vessel is lifted to the top of the elevator cylinder by the lifting shaft and the spiral blades. After being discharged through the outlet, it is mixed with the material in the vessel. With the rotation of the stirring blades on the outside of the elevator cylinder, a mixed flow field is formed in an up-and-down circulation, which significantly improves the uniformity of the material and ensures a complete reaction.

[0015] Self-cleaning and anti-scaling inner wall: The symmetrically arranged inner wall cleaning components rotate with the lifting cylinder. Under the spring force of the elastic telescopic rod, the scraper is always in close contact with the inner wall of the vessel, which can scrape off the material attached to the inner wall in real time, avoid scale deposition, reduce manual cleaning costs, and ensure heat transfer efficiency.

[0016] Uniform gas distribution: The annular gas distribution pipe evenly introduces the reaction gas from the bottom of the vessel. The gas bubbles diffuse fully during the material stirring process, resulting in a large contact area with the material, a high reaction rate, and reduced local excessive generation of impurities.

[0017] Defoaming and reaction stabilization: The defoaming paddle at the top of the lifting cylinder can effectively break up the foam generated during the reaction, prevent foam overflow or affect gas contact, and stabilize the reaction environment. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0020] Figure 2 This is an exploded view of an embodiment of the present utility model;

[0021] Figure 3 This is a front view of an embodiment of the present utility model;

[0022] Figure 4 This is a left view of an embodiment of the present utility model;

[0023] Figure 5 This is a top view of an embodiment of the present utility model;

[0024] Figure 6 for Figure 4 A sectional view along section AA;

[0025] Figure 7 for Figure 6 A sectional view along section BB.

[0026] The components are as follows: 1. Kettle body; 2. Lifting cylinder; 3. Lifting shaft; 4. Spiral blade; 5. Stirring blade; 6. Inner wall cleaning assembly; 7. Kettle cover; 8. Support leg; 9. Feeding pipe; 10. Discharge pipe; 11. First valve; 12. Annular air distribution pipe; 13. Support; 14. Cylinder shaft; 15. Discharge port; 16. Motor; 17. First pulley; 18. Second pulley; 19. Transmission belt; 20. First gear; 21. Second gear; 22. Elastic telescopic rod; 23. Scraper; 24. Sleeve; 25. Sliding rod; 26. Spring; 27. Defoaming paddle; 28. Air inlet pipe; 29. ​​Second valve; 30. Driven shaft; 31. Bolt. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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.

[0029] like Figures 1-7As shown, this utility model discloses a reaction vessel for producing phosphorus pentachloride, comprising a vessel body 1, a support leg 8 at the bottom of the vessel body 1 for supporting it, a detachable vessel cover 7 at the top of the vessel body 1, a feeding pipe 9 on the vessel cover 7, a discharge pipe 10 at the bottom of the vessel body 1, a first valve 11 on the discharge pipe 10, an annular gas distribution pipe 12 on the inner bottom wall of the vessel body 1, and also including a lifting cylinder 2, a lifting shaft 3, spiral blades 4, stirring blades 5, and an inner wall cleaning assembly 6. A cylinder shaft 14 is located at the top of the lifting cylinder 2. 2. The lifting cylinder 2 is rotatably mounted on the lid 7 via the cylinder shaft 14. The upper part of the lifting cylinder 2 is provided with a discharge port 15, and the bottom of the lifting cylinder 2 is provided with an opening. The lifting shaft 3 is rotatably mounted inside the lifting cylinder 2 and passes through the opening. The spiral blade 4 is sleeved on the lifting shaft 3, and the stirring blade 5 is provided outside the lifting cylinder 2. The upper part of the lifting cylinder 2 is provided with a defoaming paddle 27. The annular air distribution pipe 12 is provided with an air inlet pipe 28, which passes through the bottom wall of the lid 1. The air inlet pipe 28 is provided with a second valve 29. The lid 7 is fixed to the top of the lid 1 by bolts 31.

[0030] The top of the vessel lid 7 is provided with a bracket 13, on which a motor 16 is fixed. One end of the lifting shaft 3 rotates through the cylindrical shaft 14 and is fixedly connected to the output shaft of the motor 16. A first pulley 17 is sleeved on the lifting shaft 3. A driven shaft 30 is rotatably provided on the bracket 13. A second pulley 18 is sleeved on the driven shaft 30. A transmission belt 19 is sleeved on the first pulley 17 and the second pulley 18. A first gear 20 is sleeved on the cylindrical shaft 14. A second gear 21 is sleeved on the driven shaft 30. The first gear 20 and the second gear 21 mesh.

[0031] The inner wall cleaning assembly 6 is mounted on the lifting cylinder 2, and two sets of the inner wall cleaning assembly 6 are symmetrically arranged. The inner wall cleaning assembly 6 includes an elastic telescopic rod 22 and a scraper 23. The elastic telescopic rod 22 is mounted on the lifting cylinder 2, and the scraper 23 is mounted on the elastic telescopic rod 22 and contacts the inner wall of the vessel body 1. The elastic telescopic rod 22 includes a sleeve 24, a sliding rod 25 and a spring 26. The sleeve 24 is mounted on the lifting cylinder 2, the spring 26 is located inside the sleeve 24, the sliding rod 25 is mounted on the spring 26 and is slidably connected to the sleeve 24, and the scraper 23 is mounted on the sliding rod 25.

[0032] In practical use, phosphorus raw material is added through the feeding pipe 9, the kettle lid 7 is closed, and the bolts 31 are tightened for sealing. The second valve 29 is opened, and chlorine gas is introduced into the kettle body through the air inlet pipe 28 and the annular gas distribution pipe 12. The motor 16 is started, driving the lifting shaft 3 to rotate. The spiral blades 4 lift the material at the bottom of the kettle body upward and discharge it through the outlet 15 of the lifting cylinder 2. At the same time, the lifting shaft 3 drives the driven shaft 30 to rotate through the first pulley 17 and the transmission belt 19. The second gear 21 meshes with the first gear 20 to drive the lifting cylinder 2 to rotate. The stirring blades 5 rotate synchronously to stir the material, and the defoaming paddle 27 breaks the reaction foam. When the lifting cylinder 2 rotates, the scraper 23 of the inner wall cleaning component 6 adheres tightly to the inner wall of the kettle body under the elastic force of the spring 26, scraping off the attached material and preventing scaling. After the reaction is completed, the motor 16 and the second valve 29 are closed, the first valve 11 is opened, and the product is discharged through the discharge pipe 10. The bolts 31 are loosened periodically to open the kettle lid 7 for easy maintenance and repair of the internal components.

[0033] In summary, the lifting shaft 3 drives the spiral blades 4 to lift the material at the bottom of the vessel to the upper part of the lifting cylinder 2. After being discharged through the outlet 15, it mixes with the material inside the vessel. Combined with the rotating stirring blades 5 on the outside of the lifting cylinder 2, a circulating mixing flow field is formed, significantly improving material uniformity and ensuring a complete reaction. The symmetrically arranged inner wall cleaning components 6 rotate with the lifting cylinder 2. The scraper 23, under the elastic force of the spring 26 of the elastic telescopic rod 22, remains in close contact with the inner wall of the vessel, effectively scraping away material adhering to the inner wall in real time, preventing scale buildup, reducing manual cleaning costs, and ensuring heat transfer efficiency. The annular gas distribution pipe 12 evenly introduces the reaction gas from the bottom of the vessel. The gas bubbles diffuse fully during material stirring, resulting in a large contact area with the material, a high reaction rate, and reduced localized excessive impurity generation. The defoaming paddle 27 at the top of the lifting cylinder 2 effectively breaks up the foam generated during the reaction, preventing foam overflow or interference with gas contact and stabilizing the reaction environment.

[0034] 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.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A reaction vessel for producing phosphorus pentachloride, comprising a vessel body (1), wherein the bottom of the vessel body (1) is provided with support legs (8) for supporting it, the top of the vessel body (1) is detachably provided with a vessel cover (7), the vessel cover (7) is provided with a feeding pipe (9), the bottom of the vessel body (1) is provided with a discharge pipe (10), the discharge pipe (10) is provided with a first valve (11), and the bottom wall of the vessel body (1) is provided with an annular gas distribution pipe (12), characterized in that: It also includes a lifting cylinder (2), a lifting shaft (3), a spiral blade (4), a stirring blade (5), and an inner wall cleaning assembly (6). The top of the lifting cylinder (2) is provided with a cylinder shaft (14). The lifting cylinder (2) is rotatably mounted on the kettle cover (7) via the cylinder shaft (14). The upper part of the lifting cylinder (2) is provided with a discharge port (15). The bottom of the lifting cylinder (2) is provided with an opening. The lifting shaft (3) is rotatably mounted inside the lifting cylinder (2) and passes through the opening. The spiral blade (4) is sleeved on the lifting shaft (3). The stirring blade (5) is located outside the lifting cylinder (2). The inner wall cleaning assembly (6) is located on the lifting cylinder (2).

2. The reaction vessel for producing phosphorus pentachloride according to claim 1, characterized in that: The top of the lid (7) is provided with a bracket (13), and a motor (16) is fixed on the bracket (13). One end of the lifting shaft (3) rotates through the cylindrical shaft (14) and is fixedly connected to the output shaft of the motor (16). A first pulley (17) is sleeved on the lifting shaft (3). A driven shaft (30) is rotatably provided on the bracket (13). A second pulley (18) is sleeved on the driven shaft (30). A transmission belt (19) is sleeved on the first pulley (17) and the second pulley (18). A first gear (20) is sleeved on the cylindrical shaft (14). A second gear (21) is sleeved on the driven shaft (30). The first gear (20) and the second gear (21) mesh.

3. The reaction vessel for producing phosphorus pentachloride according to claim 1, characterized in that: The inner wall cleaning assembly (6) includes an elastic telescopic rod (22) and a scraper (23). The elastic telescopic rod (22) is mounted on the lifting cylinder (2), and the scraper (23) is mounted on the elastic telescopic rod (22) and contacts the inner wall of the vessel body (1).

4. The reaction vessel for producing phosphorus pentachloride according to claim 3, characterized in that: The elastic telescopic rod (22) includes a sleeve (24), a sliding rod (25) and a spring (26). The sleeve (24) is located on the lifting cylinder (2). The spring (26) is located inside the sleeve (24). The sliding rod (25) is located on the spring (26) and is slidably connected to the sleeve (24). The scraper (23) is located on the sliding rod (25).

5. The reaction vessel for producing phosphorus pentachloride according to claim 1, characterized in that: The upper part of the lifting cylinder (2) is provided with a defoaming paddle (27).

6. The reaction vessel for producing phosphorus pentachloride according to claim 1, characterized in that: The annular gas distribution pipe (12) is provided with an air inlet pipe (28), which extends out from the bottom wall of the vessel body (1) and is provided with a second valve (29).

7. The reaction vessel for producing phosphorus pentachloride according to claim 1, characterized in that: The lid (7) is fixed to the top of the body (1) by bolts (31).

8. The reaction vessel for producing phosphorus pentachloride according to claim 1, characterized in that: The inner wall cleaning components (6) are symmetrically arranged in two sets.

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