Reaction stirring shaft and vertical dynamic tubular reactor
By designing a reaction stirring shaft to prevent backflow and a vertical dynamic tubular reactor, the problems of safety hazards, low space utilization, difficult disassembly and assembly, serious backmixing, and large temperature difference in the existing technology have been solved, realizing efficient and safe reaction mixing and temperature monitoring, which is suitable for high-risk reactions.
Patent Information
- Application Number
- CN202423249336.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing dynamic tubular reactors have problems such as safety hazards, low space utilization, difficulty in disassembly and assembly, serious backmixing, large temperature difference and dead zone formation, which are especially obvious in vertical structures.
A reaction stirring shaft with anti-backflow function was designed, including a shaft body, stirring structure and clearance structure. Combined with the modular design of a vertical dynamic tubular reactor, an annular reaction zone, insulation layer and heat exchange jacket are adopted to ensure uniform material mixing and accurate temperature monitoring.
It improves the safety, space utilization and ease of operation of the reactor, reduces backmixing and temperature difference, shortens reaction time, and is suitable for high-risk reactions involving large amounts of gas production and solids with high requirements for mixing effect.
Smart Images
Figure CN223628634U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to chemical field especially, it is a kind of reaction stirring shaft and a vertical dynamic tubular reactor with the reaction stirring shaft. BACKGROUND
[0002] The purpose of dynamic tubular reactor is to replace the existing CSTR in laboratory.CSTR is to connect multiple reaction bottles through PFA tube, the depth of tube insertion is related to the retention time of reaction, and nitrogen is used as power source, when liquid level reaches the depth of tube insertion, liquid is pushed into the next bottle under the action of nitrogen, until the final product bottle, CSTR is mainly used for the reaction with solid participation or generation, to solve the problem of easy clogging of coil.CSTR scheme itself has certain safety problem, when reaction gas is serious, bottle plug is instantaneously bounced off, causing chemical reagent splashing, and there is risk of injury.
[0003] The dynamic tubular reactor with the same specification as CSTR in prior art has large volume, and occupies about 3 / 4 of fume hood size, so it is difficult to realize series connection of multiple devices, or multiple fume hoods are needed to realize series connection of multiple devices, which causes low space utilization of fume hood.The dynamic tubular reactor is mainly used for the reaction with solid participation or generation, so the device needs to be convenient to disassemble, however, the disassembly of device on the market requires high demand on experimental personnel, and the maintenance of a device needs more than half a day, which is easy to cause liquid leakage of device due to improper operation, and some devices even need to be returned to factory for maintenance, so the project is often terminated due to device problem, so it is not friendly to experimental personnel.
[0004] In addition, dynamic tubular reactor also needs to do some reactions with serious gas production, so accurate retention time must be solved.The dynamic tubular reactor in prior art is arranged in horizontal mode, and horizontal arrangement of dynamic tubular reactor is easy to cause unreacted material to be pushed out of reactor due to sudden gas production, so the problem of retention time cannot be solved.
[0005] With the progress of technology, vertical dynamic tubular reaction system appears, and the vertical dynamic tubular reaction system is a kind of mode that reaction jacket is arranged vertically, and material and heat exchange medium are fed from bottom to top, but the problem of vertical reactor is that back mixing is more serious, and by-product is generated when back mixing is serious, which is also the result that experimental personnel do not want to get.Due to the vertical structure of vertical dynamic tubular reaction system, new technical problem is caused, that is, large temperature difference is easy to form in vertical dynamic tubular reaction system, and dead zone is easy to form, thereby affecting experimental result. UTILITY MODEL CONTENT
[0006] A series of simplified concepts are introduced in the utility model content part, and the simplified concepts are simplified from the prior art in the field, which will be further described in detail in the specific embodiment part. The utility model content part of the utility model does not mean to attempt to limit the key features and necessary technical features of the claimed technical solution, and does not mean to attempt to determine the protection scope of the claimed technical solution.
[0007] The utility model wants to solve the technical problem to provide a kind of reaction stirring shaft with anti-reflux function, can be fully stirred to reactant, and a kind of vertical dynamic tubular reactor with the reaction stirring shaft.
[0008] To solve the above technical problems, the reaction stirring shaft provided by the utility model comprises:
[0009] Shaft body 1, upper and lower ends are formed with shaft sealing structure 2, and transmission structure 3 is formed above the upper end shaft sealing structure 2, and transmission structure 3 is used for external driving;
[0010] First stirring structure 4 is formed on shaft body 1, and it is used for stirring reaction material;
[0011] First let structure 5 is formed in the middle of shaft body 1.
[0012] Preferably, the reaction stirring shaft is further improved, and the first stirring structure 4 is formed as a stirring comb arranged on the shaft body 1.
[0013] Preferably, the reaction stirring shaft is further improved and comprises:
[0014] Second stirring structure 6 is formed on the shaft body 1 below the first stirring structure 4, and it is used for pushing reaction material upwards.
[0015] Preferably, the reaction stirring shaft is further improved, and the second stirring structure 6 is formed as a spiral blade.
[0016] Preferably, the reaction stirring shaft is further improved and comprises:
[0017] Third stirring structure 7 is located on the shaft body 1 above the second stirring structure 6, and is arranged in the second stirring structure 6 in vertical direction, and it is used for preventing reaction material from flowing upwards.
[0018] Preferably, the reaction stirring shaft is further improved, and the third stirring structure 7 is formed as a spaced arrangement of anti-falling baffle.
[0019] To solve the above technical problems, the utility model provides a vertical dynamic tubular reactor, which has the reaction stirring shaft of any one of the above, and further comprises:
[0020] A shell 8 for providing a closed reaction space;
[0021] A reaction stirring shaft 9, the lower end of which is supported by a shaft sealing structure 2 in a lower bearing 10 at the bottom of the shell 8, and the upper end of which is supported by a shaft sealing structure 2 in an upper bearing 11 at the top of the shell 8, and the transmission structure 3 of which extends out of the top of the shell 8 to be connected to an external drive;
[0022] A heat exchange interlayer 12 formed between the reaction stirring shaft 9 and the shell 8 and located close to one side of the inner wall of the shell 8, for providing a temperature environment required by the reaction;
[0023] A heat preservation layer 13 covering the shell 8;
[0024] A reaction liquid inlet 14 formed at the lower part of the shell 8;
[0025] A product outlet 15 formed at the upper part of the shell 8;
[0026] A temperature monitoring point 16 formed on the shell 8 and aligned with the first accommodating structure 5, for monitoring the temperature of the closed reaction space.
[0027] Preferably, the heat exchange interlayer 12 around the temperature monitoring point 16 is formed with a second accommodating structure, and a gap is formed between the temperature monitoring point 16 and the heat exchange interlayer 12 around it.
[0028] The working principle of the reaction stirring shaft of the utility model is as follows:
[0029] The lower end of the shaft body of the reaction stirring shaft of the utility model is welded with spiral blades, and the upper end is welded with comb teeth in the radial direction, and anti-falling baffles are welded between comb teeth of different lengths. When there are solid particles or suspensions in the reaction liquid, the lower end of the reaction liquid enters the reaction cavity, the spiral blades of the rotating shaft rotate at high speed to generate an upward pushing force, which pushes the materials to the comb tooth area. The rapid rotation of the comb teeth makes the mixing effect of the two materials very good. Due to the effect of gravity, the liquid tends to fall, and the anti-falling baffles prevent the falling at this time. In addition, the upward pushing force of the spiral effectively solves the problem of the reaction sensitive to back mixing. At the same time, the temperature monitoring point directly measures the temperature of the reaction liquid by penetrating the heat exchange layer, and the temperature monitoring point is arranged at the middle part of the reaction cavity. The middle part is the flow area of the reaction liquid, so the measured temperature is more accurate.
[0030] The reaction stirring shaft of the utility model effectively solves the problem of the reaction sensitive to back mixing through the design of the first stirring structure, the second stirring structure and the third stirring structure. The combination of the first stirring structure, the second stirring structure and the third stirring structure effectively solves the problem of material deposition causing shaft obstruction without affecting the mixing effect.
[0031] It should be noted that the first stirring structure, the second stirring structure and the third stirring structure of the reaction stirring shaft of the utility model are preferentially combined for use, and can also be used alone, and the difference is only that the technical effects are slightly different.
[0032] The vertical dynamic tubular reactor has the advantages of small size, convenient operation, high mass and heat transfer effect, greatly shortened reaction time, and high suitability for high-risk reactions with high mixing effect requirement, sensitivity to back mixing, large gas production, solid participation or generation.
[0033] The vertical dynamic tubular reactor forms an annular reaction zone between the inner surface of the reaction cavity and the reaction stirring shaft through structural design, and the heat exchange layer is designed on the side close to the inner wall of the shell by arranging the heat preservation layer, so that the heat exchange area is enlarged to improve the heat exchange efficiency due to the relatively large radius of the side close to the inner wall of the shell.
[0034] The vertical dynamic tubular reactor is designed with two accommodation structures, so that the temperature monitoring point is closer to the middle part of the shaft body, and there is a gap between the heat exchange interlayer, so that the temperature measurement is more accurate. BRIEF DESCRIPTION OF DRAWINGS
[0035] The utility model drawings are intended to show the general characteristics of the methods, structures and / or materials used in the specific exemplary embodiments according to the utility model, and to supplement the description in the specification. However, the utility model drawings are not drawn to scale and may not accurately reflect the precise structure or performance characteristics of any given embodiment, and the utility model drawings should not be interpreted as limiting or restricting the scope of values or attributes covered by the exemplary embodiments according to the utility model. The utility model will be further described in detail in combination with the drawings and specific embodiments:
[0036] Figure 1 is the whole structure schematic diagram of the reaction stirring shaft of the first embodiment of the utility model.
[0037] Figure 2 is the whole structure schematic diagram of the reaction stirring shaft of the second embodiment of the utility model.
[0038] Figure 3 is the whole structure schematic diagram of the reaction stirring shaft of the third embodiment of the utility model Figure 1 .
[0039] Figure 4 is the whole structure schematic diagram of the reaction stirring shaft of the third embodiment of the utility model Figure 2 .
[0040] Figure 5It is the fourth embodiment vertical dynamic tubular reactor section view structure schematic diagram of the utility model.
[0041] Mark explanation:
[0042] Shaft body 1
[0043] Rotating shaft sealing structure
[0044] Transmission structure 3
[0045] First stirring structure 4
[0046] First let structure 5
[0047] Second stirring structure 6
[0048] Third stirring structure 7
[0049] Shell 8
[0050] Reaction stirring shaft 9
[0051] Lower bearing 10
[0052] Upper bearing 11
[0053] Heat exchange interlayer 12
[0054] Heat preservation layer 13
[0055] Reaction liquid inlet 14
[0056] Product outlet 15
[0057] Temperature monitoring point 16
[0058] Heat exchange medium inlet 17
[0059] Heat exchange medium outlet 18
[0060] Second let structure 19. Specific implementation
[0061] The advantages and technical effects of the present application can be fully understood by those skilled in the art from the disclosure of the present application. The present application can be implemented or applied in different specific embodiments, and each detail in the present application can be applied based on different viewpoints, and various modifications or changes can be made without departing from the general design idea of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. The exemplary embodiments of the present application can be implemented in various different forms, and should not be interpreted as being limited to the specific embodiments described herein. It should be understood that the embodiments are provided to make the disclosure of the present application complete and complete, and to fully convey the technical solutions of the exemplary embodiments to those skilled in the art. It should be understood that when an element is referred to as being "connected" or "coupled" to another element, the element can be directly connected or coupled to the other element, or there can be an intermediate element. However, when an element is referred to as being "directly connected" or "directly coupled" to another element, there is no intermediate element. In all the drawings, the same reference signs always represent the same elements. As used herein, the term "and / or" includes any combination and all combinations of one or more related listed items.
[0062] First embodiment
[0063] Reference Figure 1 As shown in the drawings, the present application provides a reaction stirring shaft, comprising:
[0064] The shaft body 1 is formed with a rotating shaft sealing structure 2 at both upper and lower ends, and a transmission structure 3 is formed above the rotating shaft sealing structure 2 at the upper end, and the transmission structure 3 is used for external driving.
[0065] The first stirring structure 4 is formed on the shaft body 1, which is used for stirring the reaction material.
[0066] The first displacement structure 5 is formed in the middle of the shaft body 1.
[0067] Preferably, the first stirring structure 4 is formed as a stirring comb arranged on the shaft body 1.
[0068] Moreover, it should be understood that, although the terms "first," "second," etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of example embodiments of the present application.
[0069] A second embodiment;
[0070] Referring to Figure 2 The present application provides a reaction stirring shaft, which is a further improvement on the basis of the first embodiment, and the same parts will not be described again, and further comprises:
[0071] A second stirring structure 6 is formed on the shaft body 1 below the first stirring structure 4, which is used to push the reaction material upward;
[0072] Preferably, the second stirring structure 6 is formed as a spiral blade.
[0073] A third embodiment;
[0074] The present application provides a reaction stirring shaft, which is a further improvement on the basis of the first embodiment or the second embodiment, and the same parts will not be described again, and further comprises:
[0075] A third stirring structure 7 is arranged on the shaft body 1 above the second stirring structure 6 and is arranged in the second stirring structure 6 in a vertical direction, which is used to prevent the reaction material from flowing upward.
[0076] The third stirring structure 7 is added on the basis of the first embodiment, and reference is made to Figure 3 The present application provides a reaction stirring shaft, which is a further improvement on the basis of the first embodiment or the second embodiment, and the same parts will not be described again, and further comprises:
[0077] The third stirring structure 7 is added on the basis of the second embodiment, and reference is made to Figure 4 The present application provides a reaction stirring shaft, which is a further improvement on the basis of the first embodiment or the second embodiment, and the same parts will not be described again, and further comprises:
[0078] Preferably, in the third embodiment, the first stirring structure 4 is formed as a stirring comb arranged on the shaft body 1;
[0079] The second stirring structure 6 is formed as a spiral blade;
[0080] The third stirring structure 7 is formed as a spaced-apart anti-falling baffle.
[0081] A fourth embodiment;
[0082] Referring to Figure 5As shown, the utility model provides a vertical dynamic tubular reactor, it has the reaction stirring axle of any one of above -mentioned first embodiment ~ third embodiment, same part does not repeat, still include:
[0083] The shell 8 is used for providing the closed reaction space;
[0084] Reaction stirring axle 9, the shaft seal structure 2 of its lower end is supported in the lower bearing 10 of the inner bottom of shell 8, the shaft seal structure 2 of its upper end is supported in the upper bearing 11 of the inner top of shell 8, and its transmission structure 3 passes out the top of shell 8 and is connected to external drive, for example, the gear connection of transmission structure 3 gear wheel is driven externally;
[0085] Heat exchange interlayer 12, which is formed between the reaction stirring axle 9 and the shell 8 and located near the inner wall of the shell 8, is used to provide the temperature environment required for the reaction.
[0086] Preferably, the heat exchange medium inlet 17 is formed in the lower part of the shell 8, and the heat exchange medium outlet 18 is formed in the upper part of the shell 8.
[0087] Heat preservation layer 13, which is wrapped around the shell 8;
[0088] Reaction liquid inlet 14, formed in the lower part of the shell 8;
[0089] Product outlet 15, formed in the upper part of the shell 8;
[0090] Temperature monitoring point 16, formed on the shell 8, its position is aligned with the first let -go structure 5, it is used for monitoring the temperature of the closed reaction space;
[0091] Wherein, the heat exchange interlayer 12 around the temperature monitoring point 16 is formed with the second let -go structure 19, and a gap is formed between the temperature monitoring point 16 and the heat exchange interlayer 12 around it.
[0092] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0093] The utility model is described in detail through specific embodiments and examples above, but these do not constitute the limitation to the utility model. Many deformations and improvements can be made by those skilled in the art without departing from the principles of the utility model, and these should also be regarded as the protection scope of the utility model.
Claims
1. A reaction stir shaft characterized by, Comprising: a shaft body (1) with a rotating shaft sealing structure (2) formed at both ends of the shaft body (1), a driving structure (3) formed above the rotating shaft sealing structure (2) at the upper end of the shaft body (1) for external driving; a first stirring structure (4) formed on the shaft body (1) for stirring the reaction material; a first letting structure (5) formed in the middle of the shaft body (1).
2. The reaction stir shaft of claim 1, wherein, Further comprising: a second stirring structure (6) formed on the shaft body (1) below the first stirring structure (4) for pushing the reaction material upward.
3. The reaction stirring shaft according to claim 2, wherein: the first stirring structure (4) is formed as a stirring comb arranged on the shaft body (1); the second stirring structure (6) is formed as a spiral blade.
4. The reaction stir shaft of claim 1, wherein, Further comprising: a third stirring structure (7) arranged on the shaft body (1) above the second stirring structure (6) and spaced apart in the vertical direction in the second stirring structure (6) for preventing the reaction material from flowing upward.
5. The reaction stirring shaft according to claim 4, wherein: the third stirring structure (7) is formed as a spaced-apart anti-falling baffle.
6. The reaction stir shaft of claim 2, wherein, Further comprising: a third stirring structure (7) arranged on the shaft body (1) above the second stirring structure (6) and spaced apart in the vertical direction in the second stirring structure (6) for preventing the reaction material from flowing upward.
7. The reaction stirring shaft according to claim 6, wherein: the third stirring structure (7) is formed as a spaced-apart anti-falling baffle.
8. A vertical dynamic pipe reactor having a reaction stirring shaft according to any one of claims 1 to 7, characterized in that Further comprising: a housing (8) for providing a closed reaction space; a reaction stirring shaft (9) with its lower end shaft sealing structure (2) supported in the lower bearing (10) at the bottom of the housing (8), its upper end shaft sealing structure (2) supported in the upper bearing (11) at the top of the housing (8), and its driving structure (3) extending out of the top of the housing (8) to connect to the external driving; a heat exchange interlayer (12) formed between the reaction stirring shaft (9) and the housing (8) and located close to the inner wall of the housing (8) for providing the required temperature environment for the reaction; a heat preservation layer (13) wrapped around the housing (8); a reaction liquid inlet (14) formed at the lower part of the housing (8); a product outlet (15) formed at the upper part of the housing (8); a temperature monitoring point (16) formed on the housing (8) and aligned with the first letting structure (5) for monitoring the temperature of the closed reaction space.
9. The vertical dynamic tubular reactor according to claim 8, wherein: the heat exchange interlayer (12) around the temperature monitoring point (16) is formed with a second letting structure, and a gap is formed between the temperature monitoring point (16) and the heat exchange interlayer (12) around it.