Oximation reaction kettle for producing naphahydroxamic acid
By introducing a heat exchange chamber and a sealing ring scraper structure into the oxime reaction vessel, the problem of scaling in the heat exchange gap was solved, achieving efficient cleaning and stable production of the oxime reaction vessel, and improving the production efficiency and quality of naphthylhydroxyoxime acid.
Patent Information
- Application Number
- CN202520416268.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-10
AI Technical Summary
After prolonged use, existing oxime reaction vessels are prone to scaling in the heat exchange gaps, which affects the heat exchange effect and leads to a decrease in the production efficiency and quality of naphthyl hydroxamic acid. Furthermore, there is a lack of effective cleaning components.
An oxime reaction vessel with a heat exchange chamber and a sealing ring was designed. The sealing ring drives a vertical scraper to rotate and clean the dirt. Combined with a limiting plate and a drain pipe, the inner wall of the heat exchange chamber is cleaned. The stirring operation is performed by a stirring motor and stirring blades.
It effectively cleans the inner wall of the heat exchange chamber, maintains the heat exchange effect, ensures the stability of naphtholic hydroxamic acid production and product quality, and reduces maintenance difficulty and production costs.
Smart Images
Figure CN223888023U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oxime reaction vessel technology, and more specifically, to an oxime reaction vessel for the production of naphthylhydroxyoxime acid. Background Technology
[0002] The production of naphtholic hydroxamic acid is mainly achieved through an oximation reaction, which involves reacting a specific alcohol or ketone compound with hydroxylamine or its salt in the presence of a catalyst. In this process, the reaction vessel is a key piece of equipment, and its design directly affects reaction efficiency, product quality, and production costs.
[0003] There are many types of oxime reaction vessels for preparing naphtholic hydroxamic acid on the market. Most of them are equipped with a corresponding outer cylinder with a gap between the inner and outer cylinders. By conveying heat exchange medium to this gap, the cooling or heating effects can be achieved.
[0004] However, the gap in most oxime reaction vessels is generally sealed. With prolonged heat exchange, scale easily forms on the inner wall of this gap. Conventional oxime reaction vessels lack components for cleaning this scale, leading to increasingly larger deposits. This increased scale negatively impacts the heat exchange efficiency of the subsequent heat exchange medium, further hindering the preparation of naphthylhydroxamic acid and causing inconvenience to users. Therefore, we propose an oxime reaction vessel for the production of naphthylhydroxamic acid. Utility Model Content
[0005] The purpose of this invention is to provide an oxime reaction vessel for the production of naphthyl hydroxamic acid, so as to solve the defects mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An oxime reaction vessel for the production of naphtholic hydroxamic acid includes a reaction vessel body. An outer cylinder is fixedly installed on the outside of the reaction vessel body. A heat exchange chamber with its top connected to the outside is provided between the outer cylinder and the reaction vessel body. A heat exchange medium inlet pipe connected to the heat exchange chamber is fixedly installed on the bottom cylinder of the outer cylinder. A heat exchange medium outlet pipe connected to the heat exchange chamber is fixedly installed on the top cylinder of the outer cylinder. A sealing ring is fitted on the top cylinder of the reaction vessel body. The sealing ring is rotatably connected to the reaction vessel body and abuts against the top surface of the outer cylinder. Two symmetrical vertical scrapers are fixedly installed on the bottom surface of the sealing ring. The vertical scrapers are located inside the heat exchange chamber. Multiple equidistant ring-shaped limiting plates are fixedly installed on the top cylinder of the outer cylinder. Multiple protrusions are fixedly installed on the annular side of the sealing ring. The protrusions are fixedly installed on the limiting plates by fastening bolts.
[0008] Preferably, the two vertical scrapers abut against the inner and outer walls of the heat exchange chamber, respectively, and the depth of the vertical scrapers is equal to the depth of the heat exchange chamber.
[0009] Preferably, a feed pipe is fixedly installed on the top surface of the reactor body, a discharge pipe is fixedly installed on the bottom of the reactor body, and a discharge valve is fixedly installed on the discharge pipe.
[0010] Preferably, a plurality of support legs are fixedly installed at the bottom of the outer cylinder, and a support base is fixedly installed at the bottom end of the support legs.
[0011] Preferably, a drain pipe connected to the heat exchange chamber is fixedly installed on the bottom cylinder of the outer cylinder, and a drain valve is fixedly installed on the drain pipe.
[0012] Preferably, a collar is fixedly installed on the top surface of the sealing ring, and the collar is fitted onto the reactor body and rotatably connected to the reactor body.
[0013] Preferably, a handle is fixedly installed on the top surface of the sealing ring, and the handle is arranged vertically.
[0014] Preferably, a stirring motor is fixedly installed on the top surface of the reactor body, and a vertically arranged stirring shaft is fixedly installed at the end of the output shaft of the stirring motor, and stirring blades are fixedly installed on the stirring shaft.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This utility model has a heat exchange chamber for introducing heat exchange medium for heat exchange operation. The top of the heat exchange chamber is connected to the outside, and the sealing ring can rotate. As the sealing ring rotates, it drives the vertical scraper to rotate, which can scrape off the dirt on the inner wall of the heat exchange chamber, thus achieving the effect of cleaning the inner wall of the heat exchange chamber.
[0017] 2. This utility model facilitates fixed installation through the setting of limiting plate and protrusion, and also facilitates normal heat exchange operation in the heat exchange chamber through the setting of drain pipe and drain valve, and can perform normal stirring operation through the setting of stirring motor and stirring blade. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model;
[0020] Figure 3 This is one of the partial structural schematic diagrams of this utility model;
[0021] Figure 4 This is a second schematic diagram of a partial structure of this utility model;
[0022] Figure 5 This is the third partial structural schematic diagram of this utility model;
[0023] The meanings of the labels in the diagram are as follows:
[0024] 1. Reactor body; 10. Feed pipe; 11. Discharge pipe; 12. Discharge valve;
[0025] 2. Outer cylinder; 20. Heat exchange chamber; 21. Heat exchange medium discharge pipe; 22. Heat exchange medium inlet pipe; 23. Support leg; 231. Support base; 24. Limiting plate; 25. Drain pipe; 251. Drain valve;
[0026] 3. Sealing ring; 30. Collar ring; 31. Handle; 32. Protrusion; 33. Vertical scraper;
[0027] 4. Stirring motor; 40. Stirring shaft; 41. Stirring blades. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.
[0029] Please see Figures 1-5 This utility model provides a technical solution: an oxime reaction vessel for the production of naphtholic hydroxamic acid, including a reaction vessel body 1, an outer cylinder 2 fixedly installed on the outside of the reaction vessel body 1, a heat exchange chamber 20 with its top connected to the outside between the outer cylinder 2 and the reaction vessel body 1, a heat exchange medium inlet pipe 22 connected to the heat exchange chamber 20 fixedly installed on the bottom cylinder of the outer cylinder 2, and a heat exchange medium outlet pipe 21 connected to the heat exchange chamber 20 fixedly installed on the top cylinder of the outer cylinder 2, so as to realize the heat exchange medium being introduced into the heat exchange chamber 20 for heat exchange operation, thereby achieving the effect of cooling or heating;
[0030] Specifically, a sealing ring 3 is fitted on the top cylinder of the reactor body 1. The sealing ring 3 is rotatably connected to the reactor body 1. The sealing ring 3 rests against the top surface of the outer cylinder 2. Two symmetrical vertical scrapers 33 are fixedly installed on the bottom surface of the sealing ring 3. The vertical scrapers 33 are located inside the heat exchange chamber 20. The two vertical scrapers 33 rest against the inner and outer walls of the heat exchange chamber 20 respectively. The depth of the vertical scrapers 33 is equal to the depth of the heat exchange chamber 20, so that the heat exchange chamber 20 can be scraped and cleaned as the vertical scrapers 33 rotate.
[0031] Specifically, multiple limiting plates 24 arranged in a ring at equal intervals are fixedly installed on the top cylinder of the outer cylinder 2, and multiple protrusions 32 are fixedly installed on the annular side of the sealing ring 3. The protrusions 32 are fixedly installed on the limiting plates 24 by fastening bolts, so as to enable the sealing ring 3 to be fixedly installed.
[0032] In this embodiment, a feed pipe 10 is fixedly installed on the top surface of the reactor body 1, and a discharge pipe 11 is fixedly installed on the bottom of the reactor body 1. A discharge valve 12 is fixedly installed on the discharge pipe 11 for normal feeding and discharging operations.
[0033] Specifically, multiple support legs 23 are fixedly installed at the bottom of the outer cylinder 2, and support bases 231 are fixedly installed at the bottom of the support legs 23 to provide stable support.
[0034] Furthermore, a drain pipe 25 connected to the heat exchange chamber 20 is fixedly installed on the bottom cylinder of the outer cylinder 2, and a drain valve 251 is fixedly installed on the drain pipe 25 to enable the drain operation.
[0035] In addition, a collar 30 is fixedly installed on the top surface of the sealing ring 3. The collar 30 is fitted onto the reactor body 1 and rotatably connected to the reactor body 1, making the sealing ring 3 more stable when rotating.
[0036] It is worth noting that a handle 31 is fixedly installed on the top surface of the sealing ring 3. The handle 31 is set vertically and is used for gripping and operation.
[0037] It is worth noting that a stirring motor 4 is fixedly installed on the top surface of the reactor body 1, and a vertically arranged stirring shaft 40 is fixedly installed at the end of the output shaft of the stirring motor 4. A stirring blade 41 is fixedly installed on the stirring shaft 40 to enable stirring operation.
[0038] When using the oxime reaction vessel for the production of naphtholic hydroxamic acid, the discharge valve 12 is closed, and the raw materials for the production of naphtholic hydroxamic acid are transported into the reaction vessel body 1 through the feed pipe 10. The heat exchange medium inlet pipe 22 and the heat exchange medium outlet pipe 21 are connected to the external heat exchange medium conveying pipeline. The stirring motor 4 is started and put into operation. When the stirring motor 4 is working, the output shaft on it rotates, which drives the stirring shaft 40 and the stirring blades 41 to rotate, thereby realizing the stirring operation.
[0039] When cleaning is required inside the heat exchange chamber 20, unscrew the fastening bolts on the protrusion 32, and then rotate the sealing ring 3 around the reactor body 1. As the sealing ring 3 rotates, it can drive the vertical scraper 33 to rotate. The vertical scraper 33 scrapes off the dirt on the wall of the heat exchange chamber 20. At this time, open the drain valve 251, and the dirt in the heat exchange chamber 20 can be discharged outward from the drain pipe 25 along the fluid.
[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An oxime reaction vessel for the production of naphtholic hydroxamic acid, comprising a reaction vessel body (1), characterized in that: An outer cylinder (2) is fixedly installed on the outside of the reactor body (1). A heat exchange chamber (20) with its top connected to the outside is provided between the outer cylinder (2) and the reactor body (1). A heat exchange medium inlet pipe (22) connected to the heat exchange chamber (20) is fixedly installed on the bottom cylinder of the outer cylinder (2). A heat exchange medium outlet pipe (21) connected to the heat exchange chamber (20) is fixedly installed on the top cylinder of the outer cylinder (2). A sealing ring (3) is fitted on the top cylinder of the reactor body (1). The sealing ring (3) is connected to the outer cylinder (20) with the heat exchange medium outlet pipe (21) connected to the heat exchange chamber (20). The reactor bodies (1) are rotatably connected. The sealing ring (3) abuts against the top surface of the outer cylinder (2). Two symmetrical vertical scrapers (33) are fixedly installed on the bottom surface of the sealing ring (3). The vertical scrapers (33) are located inside the heat exchange chamber (20). Multiple equidistant limit plates (24) are fixedly installed on the top cylinder of the outer cylinder (2). Multiple protrusions (32) are fixedly installed on the annular side of the sealing ring (3). The protrusions (32) are fixedly installed on the limit plates (24) by fastening bolts.
2. The oxime reaction vessel for the production of naphtholic hydroxamic acid according to claim 1, characterized in that: The two vertical scrapers (33) respectively abut against the inner and outer walls of the heat exchange chamber (20), and the depth of the vertical scrapers (33) is equal to the depth of the heat exchange chamber (20).
3. The oxime reaction vessel for the production of naphtholic hydroxamic acid according to claim 1, characterized in that: A feed pipe (10) is fixedly installed on the top surface of the reactor body (1), and a discharge pipe (11) is fixedly installed on the bottom of the reactor body (1). A discharge valve (12) is fixedly installed on the discharge pipe (11).
4. The oxime reaction vessel for the production of naphtholic hydroxamic acid according to claim 1, characterized in that: The bottom of the outer cylinder (2) is fixedly equipped with multiple support legs (23), and the bottom end of the support legs (23) is fixedly equipped with a support base (231).
5. The oxime reaction vessel for the production of naphtholic hydroxamic acid according to claim 1, characterized in that: A drain pipe (25) connected to the heat exchange chamber (20) is fixedly installed on the bottom cylinder of the outer cylinder (2), and a drain valve (251) is fixedly installed on the drain pipe (25).
6. The oxime reaction vessel for the production of naphtholic hydroxamic acid according to claim 1, characterized in that: A collar (30) is fixedly installed on the top surface of the sealing ring (3), and the collar (30) is fitted on the reactor body (1) and rotatably connected to the reactor body (1).
7. The oxime reaction vessel for the production of naphtholic hydroxamic acid according to claim 1, characterized in that: A handle (31) is fixedly installed on the top surface of the sealing ring (3), and the handle (31) is arranged vertically.
8. The oxime reaction vessel for the production of naphtholic hydroxamic acid according to claim 1, characterized in that: A stirring motor (4) is fixedly installed on the top surface of the reactor body (1). A stirring shaft (40) is fixedly installed at the end of the output shaft of the stirring motor (4) in a vertical position. A stirring blade (41) is fixedly installed on the stirring shaft (40).