Preparation device of isobornyl methacrylate

Abstract

The utility model is applicable to the technical field of reaction kettles, and discloses a preparation device of isobornyl methacrylate, which comprises a reaction kettle, a first stirring mechanism, a spraying pipe and a feeding assembly. According to the reaction kettle disclosed by the utility model, the spraying pipe is arranged in the reaction kettle and is connected with the methacrylic acid feeding assembly, so that the methacrylic acid and the camphene are fed step by step, and the methacrylic acid can drop into the camphene from the spraying hole in a liquid drop form and is fully dispersed in the camphene under the stirring action of the first stirring mechanism; methacrylic acid is added into the reaction kettle and dissolved in camphene, so that the methacrylic acid can be fully and uniformly mixed with the camphene after being completely added into the reaction kettle, and when the methacrylic acid reacts with the camphene, the catalytic reaction speed is higher, the reaction time can be further shortened, and the generation of byproducts can be further reduced; and the yield of the isobornyl methacrylate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reactors, in particular to a device for preparing isobornyl methacrylate. Background Art

[0002] Isobornyl methacrylate is a monomer with excellent heat resistance, weather resistance, water resistance, abrasion resistance, and toxicity resistance. It is widely used in coatings, adhesives, optical resins, and other fields. Isobornyl methacrylate can be obtained by the esterification reaction of camphene and methacrylic acid under catalytic conditions.

[0003] When preparing isobornyl methacrylate, the reaction temperature is too high and can cause by-products to be generated. For this reason, the Chinese patent literature with the announcement number CN217450095U discloses a preparation device for isobornyl methacrylate, which is provided with a rectangular frame and a plurality of stuffing tubes on the blades of a stirring device, so that the stuffing tubes loaded with catalyst are away from the jacket of the reactor, thereby reducing the by-products generated due to the excessive local temperature during catalysis. However, a long reaction time can also cause by-products to be generated, and the preparation device of existing isobornyl methacrylate cannot further shorten the catalytic reaction time of amphene and methacrylic acid, so that the productive rate of isobornyl methacrylate still needs to be improved.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0005] The utility model provides a device for preparing isobornyl methacrylate, aiming to improve the existing device for preparing isobornyl methacrylate so as to further improve the yield of isobornyl methacrylate.

[0006] In order to achieve the above purpose, the solution provided by the utility model is:

[0007] The preparation device of isobornyl methacrylate comprises a reactor and a first stirring mechanism rotatably arranged in the reactor, a jacket is provided between the inner wall and the outer wall of the reactor, and a feeding port is provided on the top of the reactor for adding camphene. The preparation device also comprises:

[0008] A spray pipe is provided inside the reactor and is arc-shaped or ring-shaped, with a plurality of discharge holes provided at the bottom of the spray pipe;

[0009] A feeding component is connected to the spraying pipe and is used to provide methacrylic acid into the spraying pipe.

[0010] Optionally, when the spray pipe is arc-shaped, a plurality of spray pipes are provided, and the plurality of spray pipes together form a ring structure.

[0011] Optionally, the spray pipe is detachably connected to a discharge branch pipe, and the feeding assembly includes a raw material storage tank, a feeding pipe connected to the raw material storage tank, and a metering pump provided on the feeding pipe.

[0012] Optionally, the inner wall of the reactor is provided with a plurality of spoilers.

[0013] Optionally, the device for preparing isobornyl methacrylate further includes a second stirring mechanism and a second driving mechanism, wherein the second stirring mechanism is rotatably arranged at the bottom of the reactor, the second driving mechanism is fixed to the outer bottom of the reactor, and the output shaft of the second driving mechanism is transmission-connected to the second stirring mechanism.

[0014] Optionally, the first stirring mechanism includes a vertically arranged stirring rod, a rectangular frame connected to the stirring rod, and a plurality of filling tubes arranged on the rectangular frame; the rectangular frame is provided with limiting holes and limiting grooves on both sides in the vertical direction, and the limiting holes and limiting grooves are respectively used to limit the two ends of the filling tube.

[0015] Optionally, the filling tube includes a filling tube body and limiting portions provided at both ends of the filling tube body, the outer diameter of the limiting portions is smaller than the outer diameter of the filling tube body, and the limiting portions are respectively engaged with the limiting hole and the limiting groove;

[0016] The rectangular frame includes two horizontal plates, a first vertical plate with a limiting hole, and a second vertical plate with a limiting groove; the second vertical plate is integrally formed with the two horizontal plates, and the first vertical plate is detachably connected to the two horizontal plates.

[0017] Optionally, the device for preparing isobornyl methacrylate further includes a temperature sensor, which is inserted into the reactor.

[0018] Beneficial effects:

[0019] The utility model provides a preparation device for isobornyl methacrylate. A spray pipe is arranged in a reaction kettle and connected to a methacrylic acid feeding assembly, thereby realizing step-by-step feeding of methacrylic acid and camphene. Methacrylic acid can drip downward from the spray hole into the camphene in the form of droplets and be fully dispersed in the camphene under the stirring action of a first stirring mechanism, thereby dissolving the camphene. Therefore, after the methacrylic acid is completely added into the reaction kettle, the methacrylic acid can be fully and evenly mixed with the camphene. When the methacrylic acid reacts with the camphene, the catalytic reaction speed is faster and the reaction time can be further shortened. Therefore, the generation of by-products can be further reduced, and the yield of isobornyl methacrylate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a device for preparing isobornyl methacrylate provided by the utility model.

[0021] Figure 2 3 is a diagram showing the relative positions of the spray pipe and the first stirring mechanism.

[0022] Figure 3 It is a structural schematic diagram of one form of the spray pipe.

[0023] Figure 4 It is a structural breakdown diagram of the rectangular frame.

[0024] Description of Figure Numbers:

[0025] 1-reactor; 101-jacket; 102-feeding port;

[0026] 2 - first stirring mechanism; 21 - stirring rod; 22 - rectangular frame; 221 - horizontal plate; 222 - first vertical plate; 223 - second vertical plate; 2221 - limiting hole; 2231 - limiting groove; 23 - filling tube; 231 - filling tube body; 232 - limiting portion;

[0027] 3- injection pipe; 301- discharge hole;

[0028] 4-feeding assembly; 401-raw material storage tank; 402-feeding pipe; 403-metering pump;

[0029] 5-discharging branch pipe; 6-spoiler;

[0030] 7- second stirring mechanism; 701- stirring blade;

[0031] 8-second driving mechanism; 9-temperature sensor; 10-first driving mechanism. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0035] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0036] See also Figures 1 to 4 The utility model provides a preparation device for isobornyl methacrylate, comprising a reaction kettle 1, a first stirring mechanism 2, a spray pipe 3 and a feeding assembly 4.

[0037] Wherein, the first stirring mechanism 2 rotates and is located in the reactor 1, and the first stirring mechanism 2 comprises a rectangular frame 22 and a stuffing tube 23 arranged on the rectangular frame 22. Catalyst is loaded in the stuffing tube 23. Between the inner wall and the outer wall of the reactor 1, a chuck 101 is provided. A heating tube can be installed in the chuck 101, and the heat-conducting medium (such as thermal oil) of the heat that can be circulated can provide the required heat for catalytic reaction for the reactor 1 inside when the reactor 1 is working. The top of the reactor 1 is also provided with a charging port 102, utilizes charging port 102 to add the amphene of solid shape in the reactor 1, after the amphene of the required consumption to be produced has been added, charging port 102 is sealed, then the first stirring mechanism 2 is opened, amphene and the reactor 1 are broken up.

[0038] Wherein, spray pipe 3 is located at reactor 1 inside, and spray pipe 3 is arc-shaped or annular, and the bottom of spray pipe 3 is provided with a plurality of discharge holes 301. Feed assembly 4 is connected with spray pipe 3, to provide methacrylic acid in spray pipe 3. After methacrylic acid enters spray pipe 3, methacrylic acid drips downwards in amphene by discharge hole 301 with drop shape, and is fully dispersed in amphene under the stirring action of first stirring mechanism 2, and amphene is dissolved, therefore after methacrylic acid is added in reactor 1 fully, methacrylic acid can fully mix with amphene, when methacrylic acid and amphene react, catalytic reaction speed is faster, and the reaction times can further shorten, therefore can further reduce the generation of by product, the productive rate of isobornyl methacrylate is improved.

[0039] like Figure 2 As shown, optionally, when the spray pipe 3 is arc-shaped, a plurality of spray pipes 3 are provided, and the plurality of spray pipes 3 together form an annular structure. This can make the dripping area of ​​methacrylic acid dripping in the reactor 1 cover a wide range, just like the annular spray pipe 3, and the methacrylic acid can be fully and evenly mixed with camphene.

[0040] like Figure 2 As shown, the spray pipe 3 is optionally detachably connected to a discharge branch pipe 5, allowing the reactor lid 1 to be separated from the reactor body 1. Furthermore, when the spray pipe 3 is curved, the number of discharge branches 5 matches the number of spray pipes 3. Compared to a circular spray pipe 3, the curved design of the spray pipe 3 reduces the length of the spray pipe 3 and reduces the internal space. Consequently, once methacrylic acid enters the spray pipe 3, proper control of the methacrylic acid flow rate ensures that the methacrylic acid can simultaneously drip out of the spray pipe 3 through multiple discharge holes 301.

[0041] like Figure 1 As shown, the feed assembly 4 optionally includes a raw material storage tank 401, a feed pipe 402, and a metering pump 403. The raw material storage tank 401 is used to store methacrylic acid. The feed pipe 402 is connected to the discharge port at the bottom of the raw material storage tank 401 and is also connected to multiple discharge branches 5, allowing the methacrylic acid to be delivered to the injection pipe 3. The metering pump 403 is installed on the feed pipe 402 to provide driving force for the delivery of methacrylic acid. When a weight sensor located outside the reactor 1 detects that the amount of methacrylic acid added to the reactor 1 has reached the production range, the metering pump 403 automatically shuts down, preventing further delivery of methacrylic acid to the injection pipe 3.

[0042] like Figure 1 As shown, the inner wall of the reactor 1 is optionally provided with a plurality of spoilers 6. For example, the spoilers 6 can be arranged upward and away from the inner wall of the reactor 1. The spoilers 6 can form turbulent flow and avoid eddies during the stirring process, thereby enhancing the stirring effect and ensuring that the methacrylic acid is fully and evenly mixed with the camphene.

[0043] like Figure 1 As shown, optionally, the preparation device of isobornyl methacrylate also includes a second stirring mechanism 7 and a second driving mechanism 8. The second stirring mechanism 7 is rotatably arranged at the bottom of the reactor 1. The second driving mechanism 8 can be a motor, which is fixed to the outer bottom of the reactor 1, and the output shaft of the second driving mechanism 8 is transmission-connected to the second stirring mechanism 7 to drive the second stirring mechanism 7 to perform stirring operation.

[0044] By arranging the second stirring mechanism 7 at the bottom of the reactor 1, the second stirring mechanism 7 can effectively guide the raw materials at the bottom upward when working, which helps to reduce the stirring dead angle in the reactor 1 and promote the full and uniform mixing of methacrylic acid and camphene.

[0045] like Figure 1 and Figure 2 As shown, optionally, the first stirring mechanism 2 includes a vertically arranged stirring rod 21, the aforementioned rectangular frame 22 connected to the stirring rod 21, and a plurality of stuffing tubes 23 provided on the rectangular frame 22. The rectangular frame 22 is provided with a limiting hole 2221 and a limiting groove 2231 on both sides in the vertical direction. The limiting hole 2221 and the limiting groove 2231 are respectively used to limit the ends of the stuffing tube 23, so that the stuffing tube 23 can be reliably connected to the rectangular frame 22. When the stirring rod 21 drives the rectangular frame 22 to rotate, the stuffing tube 23 will not be thrown out of the rectangular frame 22.

[0046] like Figure 2 and Figure 4 As shown, optionally, the filling tube 23 includes a filling tube body 231 and a limiting portion 232 provided at both ends of the filling tube body 231, the outer diameter of the limiting portion 232 is smaller than the outer diameter of the filling tube body 231, and the limiting portion 232 is respectively engaged with the limiting hole 2221 and the limiting groove 2231, so that the rectangular frame 22 can prevent the filling tube body 231 from moving, so that the filling tube 23 is reliably connected to the rectangular frame 22.

[0047] like Figure 4 As shown, further, the rectangular frame 22 includes two horizontal plates 221, a first vertical plate 222 with a limiting hole 2221, and a second vertical plate 223 with a limiting groove 2231; the second vertical plate 223 is integrally formed with the two horizontal plates 221, and the second vertical plate 223 is fixedly connected to the stirring rod 21, and the first vertical plate 222 is detachably connected to the two horizontal plates 221.

[0048] When the filling tubes 23 need to be removed from the rectangular frame 22, the reactor cover 1 is first removed from the reactor body 1 and the reactor cover 1 is moved to an open area using a crane or other lifting equipment. Since the first stirring mechanism 2 is lifted off the reactor body 1 along with the reactor cover 1, when the reactor cover 1 is moved to an open area, a worker can stand on one side of the rectangular frame 22 and remove the first vertical plate 222, thereby removing the filling tubes 23 from the rectangular frame 22 one by one.

[0049] like Figure 1 As shown, optionally, the preparation device of isobornyl methacrylate further includes a temperature sensor 9, which is inserted into the reactor 1 to monitor the temperature inside the reactor 1, thereby facilitating the control of the reaction between methacrylic acid and camphene.

[0050] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A device for preparing isobornyl methacrylate, comprising a reactor (1) and a first stirring mechanism (2) rotatably arranged in the reactor (1), wherein a jacket (101) is provided between the inner wall and the outer wall of the reactor (1), characterized in that: The top of the reactor (1) is provided with a charging port (102), and the charging port (102) is used to add camphene; the preparation device also includes: A spray pipe (3), the spray pipe (3) is arranged inside the reaction kettle (1), and the spray pipe (3) is arc-shaped or ring-shaped, and a plurality of discharge holes (31) are provided at the bottom of the spray pipe (3); A feeding component (4) is connected to the spraying pipe (3), and the feeding component (4) is used to provide methacrylic acid into the spraying pipe (3).

2. The preparation device of isobornyl methacrylate according to claim 1, characterized in that: When the spraying pipe (3) is arc-shaped, a plurality of spraying pipes (3) are provided, and the plurality of spraying pipes (3) together form a ring-shaped structure.

3. The preparation device of isobornyl methacrylate according to claim 2, characterized in that: The spray pipe (3) is detachably connected to a discharge branch pipe (5), and the feeding assembly (4) comprises a raw material storage tank (401), a feeding pipe (402) connected to the raw material storage tank (401), and a metering pump (403) provided on the feeding pipe (402).

4. The preparation device of isobornyl methacrylate according to claim 1, characterized in that: The inner wall of the reactor (1) is provided with a plurality of spoilers (6).

5. The preparation device of isobornyl methacrylate according to claim 1, characterized in that: The invention also comprises a second stirring mechanism (7) and a second driving mechanism (8), wherein the second stirring mechanism (7) is rotatably arranged at the bottom of the reaction kettle (1), and the second driving mechanism (8) is fixedly arranged at the outer bottom of the reaction kettle (1), and the output shaft of the second driving mechanism (8) is transmission-connected to the second stirring mechanism (7).

6. The preparation device of isobornyl methacrylate according to claim 1, characterized in that: The first stirring mechanism (2) comprises a vertically arranged stirring rod (21), a rectangular frame (22) connected to the stirring rod (21), and a plurality of stuffing tubes (23) arranged on the rectangular frame (22); the rectangular frame (22) is provided with a limiting hole (2221) and a limiting groove (2231) on both sides in the vertical direction, respectively, and the limiting hole (2221) and the limiting groove (2231) are respectively used to limit the two ends of the stuffing tube (23).

7. The preparation device of isobornyl methacrylate according to claim 6, characterized in that: The stuffing tube (23) comprises a stuffing tube body (231) and limiting portions (232) provided at both ends of the stuffing tube body (231); the outer diameter of the limiting portion (232) is smaller than the outer diameter of the stuffing tube body (231), and the limiting portion (232) is respectively engaged with the limiting hole (2221) and the limiting groove (2231); The rectangular frame (22) comprises two transverse plates (221), a first vertical plate (222) provided with a limiting hole (2221), and a second vertical plate (223) provided with a limiting groove (2231); the second vertical plate (223) and the two transverse plates (221) are integrally formed, and the first vertical plate (222) and the two transverse plates (221) are detachably connected.

8. The device for preparing isobornyl methacrylate according to claim 1, characterized in that: It also includes a temperature sensor (9), which is inserted into the reactor (1).

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