Equipment for preparing chloroacetaldehyde dialkyl alcohol
By using a combination of a reflux pipe and a feed pump in the chlorination reactor, the problems of complex reactor structure and media leakage were solved, and a highly efficient process for preparing chloroacetaldehyde dialkyl alcohol was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-03-06
AI Technical Summary
Existing equipment for preparing chloroacetaldehyde dialkyl alcohols has a complex structure, and the medium inside the chlorination reactor is prone to leakage.
By using a combination of a reflux pipe and a feed pump, the medium inside the chlorination reactor is extracted and discharged back in through the reflux pipe, eliminating the need for a stirring mechanism, simplifying the structure of the chlorination reactor, improving reaction efficiency, and enhancing sealing.
The structure of the chlorination reactor has been simplified, the operating cost has been reduced, and the reaction efficiency has been improved, while media leakage has been avoided.
Smart Images
Figure CN223969945U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chloroacetaldehyde dialkyl acetal preparation technology, and in particular to an apparatus for preparing chloroacetaldehyde dialkyl acetal. Background Technology
[0002] Chloroacetaldehyde dimethyl acetal (systematic name: 2-chloro-1,1-dimethoxyethane) is widely used in the synthesis of fragrances, pharmaceuticals, and pesticides, and is also an important organic synthesis reagent. As an important organic compound, it has wide applications in organic synthesis, chemical separation, analytical chemistry, pharmaceuticals, and pesticides.
[0003] The existing technology for preparing dimethyl chloroacetaldehyde typically includes a chlorination reactor and a reaction vessel. The raw materials are reacted in the chlorination reactor before entering the reaction vessel. A transfer pump is usually used to transfer the medium from the chlorination reactor to the reaction vessel. To ensure uniform mixing of the medium in the chlorination reactor, a stirring mechanism is usually installed inside the chlorination reactor to agitate the medium. Although this type of chlorination reactor has high reaction efficiency, the need for a stirring mechanism makes the reactor structure complex and may cause leakage of the medium inside the chlorination reactor.
[0004] Therefore, the existing equipment for preparing chloroacetaldehyde dialkyl alcohol has technical problems such as complex structure and easy leakage of the medium in the chlorination reactor. Summary of the Invention
[0005] This invention provides an apparatus for preparing chloroacetaldehyde dialkyl alcohol, which solves the technical problems of complex structure and easy leakage of media in the chlorination reactor in the prior art for preparing chloroacetaldehyde dialkyl alcohol.
[0006] Some implementation schemes for solving the above-mentioned technical problems include:
[0007] An apparatus for preparing chloroacetaldehyde dialkyl alcohol includes a chlorination reaction assembly and a reaction vessel assembly, wherein the chlorination reaction assembly supplies materials to the reaction vessel assembly via a feeding assembly;
[0008] The chlorination reaction assembly includes a raw material tank, a cooler, a chlorine gas tank, and a chlorination reactor. The raw material in the raw material tank enters the chlorination reactor through the cooler, and the chlorine gas tank is connected to the chlorination reactor.
[0009] The feeding assembly includes a feeding pump and a feeding pipe. The feeding pipe includes a reflux pipe communicating with the chlorination reaction and a discharge pipe communicating with the reactor assembly. Both the discharge pipe and the reflux pipe are connected to the feeding pump through a control valve. The medium output by the feeding pump enters the chlorination reactor through the reflux pipe, or the medium output by the feeding pump enters the reactor assembly through the discharge pipe.
[0010] The reactor assembly includes a reactor body and a mixing tank, which is connected to the reactor body.
[0011] Preferably, a stirring assembly is provided inside the reactor body.
[0012] Preferably, the reactor body includes a shell, and the stirring assembly includes a driver and a stirrer, with the driver disposed outside the shell and the stirrer located inside the shell.
[0013] Preferably, the stirrer includes a stirring shaft driven by the driver, the stirring shaft is provided with stirring blades, the rotation axis of the stirring blades coincides with the axis of the stirring shaft, and the stirrer also includes stirring plates, the rotation axis of the stirring plates is not parallel to the axis of the stirring shaft.
[0014] Preferably, the rotation axis of the stirring blade is perpendicular to the axis of the stirring shaft.
[0015] Preferably, the housing is provided with a mounting bracket, the mounting bracket is rotatably connected to a rotating shaft, the stirring blade is disposed on the rotating shaft, and the rotating shaft is driven by the stirring shaft.
[0016] Preferably, the stirring shaft is provided with a driving gear, and the rotating shaft is provided with a driven gear that meshes with the driving gear.
[0017] Preferably, there are at least three rotating shafts, each equipped with a stirring blade, and all the rotating shafts are evenly arranged around the stirring shaft in the circumference.
[0018] Preferably, the mounting bracket includes an inner ring and an outer ring, the inner ring being rotatably connected to the stirring shaft, the outer ring being mounted on the inner wall of the housing, one end of the rotating shaft being rotatably connected to the outer ring, and the other end of the rotating shaft being rotatably connected to the inner ring.
[0019] Preferably, the inner ring is provided with a through hole, the stirring shaft passes through the through hole, a bearing is provided between the stirring shaft and the through hole, a bearing is provided between the rotating shaft and the inner ring, and a bearing is provided between the rotating shaft and the outer ring.
[0020] Compared with the prior art, the present invention has the following advantages:
[0021] 1. By setting up a reflux pipe and a feed pump, the feed pump can extract the medium from the chlorination reactor and then discharge it back into the chlorination reactor through the reflux pipe. The medium entering the chlorination reactor through the reflux pipe can impact the medium stored in the chlorination reactor, thereby keeping the medium in the chlorination reactor in a non-static state and thus improving the reaction efficiency of the chlorination reactor.
[0022] 2. By installing a reflux pipe and a feed pump, the feed pump utilizes the reflux pipe to circulate the medium within the chlorination reactor, eliminating the need for a stirring mechanism. This simplifies the reactor's structure and reduces operating costs. Furthermore, the absence of a stirring mechanism eliminates the need for other structures on the reactor, resulting in better sealing performance and minimizing the risk of media leakage. Attached Figure Description
[0023] For illustrative purposes, several embodiments of the present invention are illustrated in the following figures. These figures are incorporated herein by reference and form part of the detailed description. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring the concept of the subject matter of the present invention.
[0024] Figure 1 This is a schematic diagram of the present invention.
[0025] Figure 2 This is a schematic diagram of the internal structure of the reactor body.
[0026] Figure 3 This is a schematic diagram of the reactor body.
[0027] Figure 4 This is a schematic diagram of the stirring assembly.
[0028] Figure 5 This is a schematic diagram showing how the drive gear is positioned on the stirring shaft.
[0029] Figure 6 This is a schematic diagram of how the rotating shaft is installed on the mounting bracket.
[0030] As shown in the figure:
[0031] 1. Chlorination reaction assembly; 11. Raw material tank; 12. Cooler; 13. Chlorine tank; 131. Chlorination reactor.
[0032] 2. Reactor assembly, 21. Reactor body, 22. Batching tank, 23. Stirring assembly, 231. Shell, 232. Driver, 233. Stirrer, 234. Stirring shaft, 235. Stirring blade, 236. Stirring plate, 24. Mounting bracket, 241. Inner ring, 242. Outer ring, 25. Rotating shaft, 26. Driving gear, 27. Driven gear.
[0033] 3. Feeding assembly; 31. Feeding pump; 32. Return pipe; 33. Discharge pipe; 34. Control valve. Detailed Implementation
[0034] The specific embodiments shown below are intended to describe various configurations of the subject matter of this invention and are not intended to represent the only configuration in which the subject matter of this invention can be practiced. The specific embodiments include detailed descriptions intended to provide a thorough understanding of the subject matter of this invention. However, it will be clear and apparent to those skilled in the art that the subject matter of this invention is not limited to the specific details shown herein and can be practiced without these specific details.
[0035] Understandably, in this document, relational terms such as “first” and “second” are intended to distinguish one entity or operation from another, and are not intended to expressly or imply any actual relationship or order between these entities or operations.
[0036] The terms “comprising,” “including,” or any other variations thereof are intended to cover a 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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0037] Reference Figures 1 to 6 As shown, an apparatus for preparing chloroacetaldehyde dialkyl alcohol includes a chlorination reaction assembly 1 and a reaction vessel assembly 2, wherein the chlorination reaction assembly 1 supplies materials to the reaction vessel assembly 2 through a feeding assembly 3;
[0038] The chlorination reaction assembly 1 includes a raw material tank 11, a cooler 12, a chlorine tank 13, and a chlorination reactor 131. The raw material in the raw material tank 11 enters the chlorination reactor 131 through the cooler 12, and the chlorine tank 13 is connected to the chlorination reactor 131.
[0039] The feeding assembly 3 includes a feeding pump 31 and a feeding pipe. The feeding pipe includes a reflux pipe 32 communicating with the chlorination reaction and a discharge pipe 33 communicating with the reactor assembly 2. The discharge pipe 33 and the reflux pipe 32 are both connected to the feeding pump 31 through a control valve 34. The medium output by the feeding pump 31 enters the chlorination reactor 131 through the reflux pipe 32, or the medium output by the feeding pump 31 enters the reactor assembly 2 through the discharge pipe 33.
[0040] The reactor assembly 2 includes a reactor body 21 and a mixing tank 22, which communicates with the reactor body 21.
[0041] The preparation method of chloroacetaldehyde dialkyl acetal is not limited and can refer to existing technology. The equipment provided by this utility model is used to complete part or all of the manufacturing process of chloroacetaldehyde dialkyl acetal.
[0042] Cooler 12 is a common refrigeration device in the prior art, and its working principle and specific structure are in accordance with the prior art.
[0043] Reference Figures 2 to 6 As shown, in some embodiments, when the raw materials and chlorine react in the chlorination reactor 131, the control valve 34 closes the discharge pipe 33 and opens the return pipe 32. At this time, the feed pump 31 operates to extract the medium in the chlorination reactor 131 and then return it to the inside of the chlorination reactor 131 through the return pipe 32, realizing the return of the medium. This keeps the medium in the chlorination reactor 131 in a non-static state, which is beneficial to improving the reaction efficiency of the chlorination reactor 131.
[0044] After the reaction in the chlorination reactor 131 is complete, the control valve 34 can close the reflux pipe 32 and open the discharge pipe 33, allowing the medium in the chlorination reactor 131 to react in the reactor assembly 2 via the discharge pipe 33. Alternatively, during this process, both the discharge pipe 33 and the reflux pipe 32 can be opened, so that a portion of the medium output by the feed pump 31 enters the reactor assembly 2, while the other portion continues to flow back to the chlorination reactor 131, preventing the medium in the chlorination reactor 131 from becoming stagnant.
[0045] The control valve 34 can be a solenoid valve. The control valve 34 can be controlled by a controller, or it can be manually controlled. The control method of the control valve 34 is not limited.
[0046] In some embodiments, the medium within the reactor assembly 2 should also have high reaction efficiency to improve production efficiency. For example, a stirring assembly 23 is provided inside the reactor body 21.
[0047] Reference Figures 2 to 6As shown, in some embodiments, the reactor body 21 includes a shell 231, and the stirring assembly 23 includes a driver 232 and a stirrer 233. The driver 232 is disposed outside the shell 231, and the stirrer 233 is located inside the shell 231. The driver 232 can be a motor, which can be fixed to the shell 231 by screws or other means.
[0048] In some embodiments, the stirrer 233 includes a stirring shaft 234 driven by the driver 232, the stirring shaft 234 is provided with stirring blades 235, the rotation axis of the stirring blades 235 coincides with the axis of the stirring shaft 234, and the stirrer 233 also includes a stirring plate 236, the rotation axis of the stirring plate 236 is not parallel to the axis of the stirring shaft 234.
[0049] Understandably, the stirring blade 235 rotates around the first axis and the stirring plate 236 rotates around the second axis. The first axis and the second axis are not parallel, which makes the medium in the reactor body 21 more turbulent, thereby making the medium in the reactor body 21 have better mixing efficiency, thus improving the reaction efficiency of the medium in the reactor body 21.
[0050] In some embodiments, the rotation axis of the stirring blade 236 is perpendicular to the axis of the stirring shaft 234.
[0051] The housing 231 is provided with a mounting bracket 24, and the mounting bracket 24 is rotatably connected to a rotating shaft 25. The stirring blade 236 is disposed on the rotating shaft 25, and the rotating shaft 25 is driven by the stirring shaft 234.
[0052] The stirring shaft 234 is provided with a driving gear 26, and the rotating shaft 25 is provided with a driven gear 27 that meshes with the driving gear 26.
[0053] There are at least three rotating shafts 25, and each rotating shaft 25 is provided with a stirring plate 236. All the rotating shafts 25 are evenly arranged around the stirring shaft 234.
[0054] Reference Figures 2 to 6 As shown, in some embodiments, the mounting bracket 24 includes an inner ring 241 and an outer ring 242. The inner ring 241 is rotatably connected to the stirring shaft 234, the outer ring 242 is mounted on the inner wall of the housing 231, one end of the rotating shaft 25 is rotatably connected to the outer ring 242, and the other end of the rotating shaft 25 is rotatably connected to the inner ring 241.
[0055] The outer ring 242 can be fixed to the inner wall of the housing 231. For example, a fixing ring can be provided on the inner wall of the housing 231, and the fixing ring can be an integral structure with the housing 231. The outer ring 242 can be fixed to the fixing ring with screws, or the outer ring 242 can be welded to the fixing ring.
[0056] The inner ring 241 can rotate relative to the stirring shaft 234, but it cannot move axially relative to the stirring shaft 234. Therefore, a bearing can be provided between the inner ring 241 and the stirring shaft 234, and the bearing can be a radial thrust bearing.
[0057] In some embodiments, the inner ring 241 is provided with a through hole, the stirring shaft 234 passes through the through hole, a bearing is provided between the stirring shaft 234 and the through hole, a bearing is provided between the rotating shaft 25 and the inner ring 241, and a bearing is provided between the rotating shaft 25 and the outer ring 242.
[0058] Both the inner ring 241 and the outer ring 242 are provided with shaft holes that mate with the rotating shaft 25.
[0059] In some embodiments, the stirring blade 235 and the stirring shaft 234 can be an integral structure. The stirring plate 236 can be an integral structure with the rotating shaft 25.
[0060] The inner ring 241 and the outer ring 242 can be connected together by a rotating shaft 25.
[0061] The above describes the subject matter technical solution of this utility model and its corresponding details. It is understood that the above description is only some implementation schemes of the subject matter technical solution of this utility model, and some details may be omitted in the specific implementation.
[0062] Furthermore, in some embodiments of the above utility model, multiple embodiments may be combined; however, due to space limitations, all such combinations will not be listed here. Those skilled in the art can freely combine the above embodiments according to their needs to achieve a better application experience.
[0063] When implementing the subject matter technical solution of this utility model, those skilled in the art can obtain other detailed configurations or drawings based on the subject matter technical solution and the accompanying drawings. Obviously, these details are still within the scope of the subject matter technical solution of this utility model without departing from it.
Claims
1. An apparatus for the production of chloroacetaldehyde bisalkyl acetal, characterized by: The utility model provides a chlorination reaction assembly (1) and reaction kettle assembly (2) including, wherein, the chlorination reaction assembly (1) is fed to the reaction kettle assembly (2) through feed assembly (3), the chlorination reaction assembly (1) includes raw material tank (11), cooler (12), chlorine tank (13) and chlorination reactor (131), and the raw material in raw material tank (11) passes through cooler (12) and enters chlorination reactor (131), and chlorine tank (13) communicates with chlorination reactor (131), the feed assembly (3) includes feed pump (31) and feed pipe, the feed pipe includes return pipe (32) and discharge pipe (33) that communicate with the chlorination reaction and the reaction kettle assembly (2), discharge pipe (33), return pipe (32) all communicate with feed pump (31) through control valve (34), and the medium that feed pump (31) exports enters chlorination reactor (131) through return pipe (32), or the medium that feed pump (31) exports enters the reaction kettle assembly (2) through discharge pipe (33), the reaction kettle assembly (2) includes reaction kettle body (21), and the reaction kettle assembly (2) further includes batching tank (22), and batching tank (22) communicates with reaction kettle body (21).
2. The apparatus for producing chloroacetaldehyde bisalkyl acetal according to claim 1, characterized by: The reaction kettle body (21) is provided with a stirring assembly (23).
3. The apparatus for producing chloroacetaldehyde bisalkyl acetal according to claim 2, characterized by: The reaction kettle body (21) includes a housing (231), and the stirring assembly (23) includes a driver (232) and a stirrer (233), the driver (232) is arranged outside the housing (231), and the stirrer (233) is located in the housing (231).
4. The apparatus for producing chloroacetaldehyde bisalkyl acetal according to claim 3, characterized by: The stirrer (233) includes a stirring shaft (234), the stirring shaft (234) is driven by the driver (232), the stirring shaft (234) is provided with stirring blades (235), the rotation axis of the stirring blades (235) coincides with the axis of the stirring shaft (234), and the stirrer (233) further includes stirring blades (236), and the rotation axis of the stirring blades (236) is not parallel to the axis of the stirring shaft (234).
5. The apparatus for producing chloroacetaldehyde bisalkyl acetal according to claim 4, characterized by: The rotation axis of the stirring blades (236) is perpendicular to the axis of the stirring shaft (234).
6. The apparatus for producing chloroacetaldehyde bisalkyl acetal according to claim 5, characterized by: The housing (231) is provided with a mounting frame (24), the mounting frame (24) is rotationally connected with a rotating shaft (25), the stirring blades (236) are arranged on the rotating shaft (25), and the rotating shaft (25) is driven by the stirring shaft (234).
7. The apparatus for producing chloroacetaldehyde bisalkyl acetal according to claim 6, characterized by: The stirring shaft (234) is provided with a driving gear (26), and the rotating shaft (25) is provided with a driven gear (27) engaged with the driving gear (26).
8. The apparatus for producing chloroacetaldehyde bisalkyl acetal according to claim 7, characterized by: The rotating shaft (25) has at least three, each rotating shaft (25) is provided with the stirring blades (236), and all rotating shafts (25) are uniformly arranged around the circumference of the stirring shaft (234).
9. The apparatus for producing chloroacetaldehyde bisalkyl acetal of claim 6, wherein: The mounting frame (24) comprises an inner ring (241) and an outer ring (242), the inner ring (241) is rotationally connected with the stirring shaft (234), the outer ring (242) is mounted on the inner wall of the shell (231), one end of the rotating shaft (25) is rotationally connected with the outer ring (242), the other end of the rotating shaft (25) is rotationally connected with the inner ring (241).
10. The apparatus for producing chloroacetaldehyde bisalkyl acetal according to claim 9, characterized by: The inner ring (241) is provided with a through hole, the stirring shaft (234) passes through the through hole, a bearing is arranged between the stirring shaft (234) and the through hole, a bearing is arranged between the rotating shaft (25) and the inner ring (241), and a bearing is arranged between the rotating shaft (25) and the outer ring (242).