Quick-install detachable heat exchange tube polycondensation reactor

Abstract

This utility model discloses a quick-assembly detachable heat exchange tube polycondensation reactor, including a reactor, a detachable heat exchange device, and a stirring device. The reactor includes a reactor body, a reactor lid, and support legs. The reactor lid is detachably mounted on the top of the reactor body, and the support legs are located at the bottom of the reactor body for support. A discharge pipe with a discharge valve is also provided at the bottom of the reactor body. The stirring device is located on the reactor lid and is used to achieve uniform mixing and enhanced heat transfer of the materials inside the reactor. The detachable heat exchange device includes an upper tube sheet, a lower tube sheet, a tube bundle, a first connecting hose, and a second connecting hose. This utility model relates to the field of chemical reaction equipment technology, specifically providing a quick-assembly detachable heat exchange tube polycondensation reactor that is quick to assemble and disassemble, stably installed, provides efficient heat exchange, and is easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction equipment technology, specifically to a quick-installation, detachable heat exchange tube polycondensation reactor. Background Technology

[0002] Traditional polycondensation reactors often use fixed jackets or built-in non-removable heat exchange tubes for temperature control. However, in actual production, the heat exchange efficiency is reduced due to material adhesion and scaling on the inner wall of the heat exchange tubes. Furthermore, the non-removable structure makes cleaning and maintenance extremely difficult, requiring the entire reactor to be disassembled and shut down, which seriously affects the continuity of production. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a quick-installation detachable heat exchange tube polycondensation reactor that is quick to assemble and disassemble, stable to install, efficient in heat exchange, and easy to maintain.

[0004] The technical solution adopted by this utility model is as follows: This utility model is a quick-installation detachable heat exchange tube polycondensation reactor, including a reactor, a detachable heat exchange device, and a stirring device. The reactor includes a reactor body, a reactor cover, and support legs. The reactor cover is detachably mounted on the top of the reactor body, and the support legs are located at the bottom of the reactor body for support. A discharge pipe is also provided at the bottom of the reactor body, and a discharge valve is provided on the discharge pipe. The stirring device is located on the reactor cover to achieve uniform mixing and enhanced heat transfer of the materials inside the reactor. The detachable heat exchange device includes an upper tube sheet, a lower tube sheet, a tube bundle, a first connecting hose, and a second connecting hose. The tube bundle is located on the upper tube sheet, and the lower tube sheet is located on the tube bundle. The plate is annular and coaxially arranged with the vessel body. The upper tube plate has a flange. The vessel body has an annular mounting plate. The flange is placed on the annular mounting plate. The flange has a fixing hole. The annular mounting plate has a fixing threaded rod. The fixing threaded rod is inserted into the fixing hole. The fixing threaded rod is threadedly connected to a fixing nut. The upper tube plate has a second input pipe and a second output pipe. The vessel body has a first input pipe and a first output pipe. The two ends of the first connecting hose are respectively connected to the first input pipe and the second input pipe through a first quick-release connector. The two ends of the second connecting hose are respectively connected to the first output pipe and the second output pipe through a second quick-release connector.

[0005] Preferably, the upper tube sheet is provided with a collecting cavity and a reflux cavity, and the tube bundle is composed of several groups of U-shaped tubes arranged in a ring array. The two ends of the U-shaped tubes are respectively connected to the collecting cavity and the reflux cavity. The second input tube is connected to the collecting cavity, and the second output tube is connected to the reflux cavity.

[0006] Preferably, the stirring device includes a driving mechanism, a stirring shaft, and stirring blades. The driving mechanism is located on the vessel lid, the stirring shaft is located on the output shaft of the driving mechanism and extends rotatably into the vessel body and is coaxially arranged with the vessel body, and the stirring blades are located on the stirring shaft.

[0007] Preferably, the reactor body is provided with a support platform for supporting the lower tube sheet.

[0008] Preferably, the flange is provided with a clearance groove for the passage of the first input tube and the first output tube.

[0009] More preferably, the fixed threaded rods are provided in several groups, and the several groups of fixed threaded rods are arranged in a circular array. The number of fixed holes is equal to the number of fixed threaded rods and corresponds one-to-one.

[0010] More preferably, the vessel lid is detachably mounted on the top of the vessel body via flange bolts.

[0011] Preferably, the top of the vessel lid is provided with several sets of connecting pipes.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] This system enables rapid assembly and disassembly of heat exchange tubes, significantly reducing maintenance costs: When removing the detachable heat exchanger, only the first and second quick-release connectors need to be removed; then the fixing nuts need to be unscrewed; finally, the upper tube sheet, tube bundle, and lower tube sheet can be removed as a whole. The entire process does not require disassembling the reactor body, greatly shortening maintenance time, significantly improving production continuity, and reducing downtime losses for the enterprise.

[0014] High heat exchange uniformity ensures reaction quality: The tube bundle adopts a U-shaped tube structure with a ring array distribution, which is evenly arranged around the stirring shaft. Combined with the independent collection and return chambers in the tube sheet, it ensures that the heat exchange medium is evenly distributed in each group of U-shaped tubes. The stirring blades stir the material, enhance the contact between the material and the tube bundle, effectively avoid material decomposition or incomplete local reaction caused by local overheating, and improve the purity and molecular weight uniformity of the polymer product.

[0015] Stable and reliable installation with strong safety: The tube bundle is fixed at both ends through the cooperation of the flange of the upper tube sheet and the annular mounting plate, and the lower tube sheet and the support platform. It has high installation accuracy and strong vibration resistance, avoiding tube bundle shaking and collision caused by stirring or medium flow.

[0016] With strong structural adaptability and compatibility with multiple process requirements: the multiple sets of connecting pipes on the top of the kettle lid can be flexibly connected to process pipelines such as raw material feeding, vacuum suction, and inert gas protection, adapting to different types of polycondensation reactions. Attached Figure Description

[0017] 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:

[0018] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0019] Figure 2 This is an exploded view of an embodiment of the present utility model;

[0020] Figure 3 This is a front view of an embodiment of the present utility model;

[0021] Figure 4 This is a left view of an embodiment of the present utility model;

[0022] Figure 5 This is a top view of an embodiment of the present utility model;

[0023] Figure 6 for Figure 4 A sectional view along section AA;

[0024] Figure 7 for Figure 6 A sectional view along section BB.

[0025] Figure 8 for Figure 6 Enlarged view of section A;

[0026] Figure 9 for Figure 7 Enlarged view of section B.

[0027] Among them, 1. Reactor, 2. Detachable heat exchanger, 3. Stirring device, 11. Reactor body, 12. Reactor cover, 13. Support leg, 14. Flange bolt, 21. Upper tube sheet, 22. Lower tube sheet, 23. Tube bundle, 24. First connecting hose, 25. Second connecting hose, 26. Fixed threaded rod, 27. Fixed nut, 31. Drive mechanism, 32. Stirring shaft, 33. Stirring blade, 111. Discharge pipe, 11 2. Discharge valve; 113. Annular mounting plate; 114. First input pipe; 115. First output pipe; 116. Support platform; 121. Connecting pipe; 211. Collecting chamber; 212. Return chamber; 213. Flange; 214. Second input pipe; 215. Second output pipe; 231. U-shaped pipe; 241. First quick-release connector; 251. Second quick-release connector; 2131. Fixing hole; 2132. Clearance groove. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] like Figures 1-9 As shown, the present invention relates to a quick-installation detachable heat exchange tube polycondensation reactor, comprising a reactor 1, a detachable heat exchange device 2, and a stirring device 3. The reactor 1 includes a reactor body 11, a reactor cover 12, and support legs 13. The reactor cover 12 is detachably mounted on the top of the reactor body 11, and the support legs 13 are located at the bottom of the reactor body 11 for support. The bottom of the reactor body 11 is also provided with a discharge pipe 111, and a discharge valve 112 is provided on the discharge pipe 111. The stirring device 3 is located on the reactor cover 12. The reactor cover 12 is detachably mounted on the top of the reactor body 11 by flange bolts 14. Several sets of connecting pipes 121 are provided on the top of the reactor cover 12.

[0031] The detachable heat exchanger 2 includes an upper tube sheet 21, a lower tube sheet 22, a tube bundle 23, a first connecting hose 24, and a second connecting hose 25. The tube bundle 23 is mounted on the upper tube sheet 21, and the lower tube sheet 22 is mounted on the tube bundle 23. The upper tube sheet 21 is annular and coaxially arranged with the vessel body 11. The upper tube sheet 21 has a flange 213. The vessel body 11 has an annular mounting plate 113, and the flange 213 is placed on the annular mounting plate 113. The flange 213 has a fixing hole 2131, and the annular mounting plate 113 has a fixing threaded rod 26, which is inserted into the fixing hole 2131. A fixing nut 27 is threadedly connected to the fixing threaded rod 26. The upper tube sheet 21 has a second input pipe 214 and a second output pipe 215. The vessel body 11 is provided with a first input pipe 114 and a first output pipe 115. The two ends of the first connecting hose 24 are respectively connected to the first input pipe 114 and the second input pipe 214 through the first quick-release connector 241. The two ends of the second connecting hose 25 are respectively connected to the first output pipe 115 and the second output pipe 215 through the second quick-release connector 251. Several sets of fixed threaded rods 26 are provided, and the several sets of fixed threaded rods 26 are arranged in a ring array. The number of fixing holes 2131 is equal to the number of fixed threaded rods 26 and corresponds one-to-one. The vessel body 11 is provided with a support platform 116 for supporting the lower tube plate 22. The flange 213 is provided with a clearance groove 2132 for the first input pipe 114 and the first output pipe 115 to pass through.

[0032] The upper tube sheet 21 is provided with a current collection cavity 211 and a return cavity 212. The tube bundle 23 is composed of several groups of U-shaped tubes 231 arranged in a ring array. The two ends of the U-shaped tubes 231 are connected to the current collection cavity 211 and the return cavity 212 respectively. The second input tube 214 is connected to the current collection cavity 211, and the second output tube 215 is connected to the return cavity 212.

[0033] The stirring device 3 includes a drive mechanism 31, a stirring shaft 32, and a stirring blade 33. The drive mechanism 31 is mounted on the lid 12. The stirring shaft 32 is mounted on the output shaft of the drive mechanism 31 and extends rotatably into the vessel body 11 and is coaxially mounted on the vessel body 11. The stirring blade 33 is mounted on the stirring shaft 32.

[0034] In practical use, the driving mechanism 31 drives the stirring shaft 32 to rotate, which in turn drives the stirring blades 33 to rotate and stir the material inside the vessel 11. The heat exchange medium is introduced through the first input pipe 114, passing sequentially through the first connecting hose 24 and the second input pipe 214 into the collecting chamber 211, and then evenly distributed to each group of U-shaped tubes 231. After exchanging heat with the material inside the vessel 11, it flows into the return chamber 212 and finally exits through the second output pipe 215, the second connecting hose 25, and the first output pipe 115, achieving efficient and uniform flow of the heat exchange medium. When the detachable heat exchange device 2 needs to be removed for maintenance, simply open the vessel cover 12, then remove the first quick-release connector 241 and the second quick-release connector 251, disconnect the first connecting hose 24 and the second connecting hose 25 from the upper tube sheet 21, then unscrew the fixing nut 27, and remove the upper tube sheet 21, tube bundle 23, and lower tube sheet 22 as a whole for maintenance. The operation is simple and convenient.

[0035] In summary, when disassembling the detachable heat exchanger 2, it is only necessary to first remove the first quick-release connector 241 and the second quick-release connector 251; then unscrew the fixing nut 27; and then take out the upper tube sheet 21, tube bundle 23 and lower tube sheet 22 as a whole. The entire process requires no disassembly of the reactor body, significantly reducing maintenance time, greatly improving production continuity, and minimizing downtime losses. The tube bundle 23 adopts a ring-array distribution of U-shaped tubes 231, evenly arranged around the stirring shaft 32. Combined with the independent collection chamber 211 and return chamber 212 within the upper tube sheet 21, it ensures that the heat exchange medium is evenly distributed within each group of U-shaped tubes 231. The stirring blades 33 stir the material, enhancing the contact between the material and the tube bundle 23, effectively preventing material decomposition or incomplete local reactions caused by local overheating, and improving the purity and molecular weight uniformity of the polymer product. The tube bundle 23 is fixed at both ends through the cooperation of the flange 213 of the upper tube sheet 21 and the annular mounting plate 113, and the lower tube sheet 22 and the support platform 116. This ensures high installation accuracy and strong vibration resistance, preventing the tube bundle 23 from shaking or colliding due to stirring or medium flow. The multiple sets of connecting pipes 121 on the top of the reactor cover 12 can flexibly connect to process pipelines such as raw material feeding, vacuum suction, and inert gas protection, adapting to different types of polycondensation reactions.

[0036] 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.

[0037] 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.

[0038] 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 quick-assembly detachable heat exchange tube polycondensation reactor, comprising a reactor (1), a detachable heat exchange device (2), and a stirring device (3), wherein the reactor (1) comprises a reactor body (11), a reactor cover (12), and support legs (13), the reactor cover (12) being detachably mounted on the top of the reactor body (11), the support legs (13) being mounted on the bottom of the reactor body (11) for supporting it, and a discharge pipe (111) being provided at the bottom of the reactor body (11), wherein a discharge valve (112) is provided on the discharge pipe (111), and the stirring device (3) is mounted on the reactor cover (12), characterized in that: The detachable heat exchange device (2) includes an upper tube sheet (21), a lower tube sheet (22), a tube bundle (23), a first connecting hose (24), and a second connecting hose (25). The tube bundle (23) is disposed on the upper tube sheet (21), and the lower tube sheet (22) is disposed on the tube bundle (23). The upper tube sheet (21) is annular and coaxially arranged with the vessel body (11). The upper tube sheet (21) is provided with a flange (213). The vessel body (11) is provided with an annular mounting plate (113). The flange (213) is placed on the annular mounting plate (113). The flange (213) is provided with a fixing hole (2131). The annular mounting plate (113) is provided with a fixing threaded rod (25). 6) The fixed threaded rod (26) is inserted into the fixed hole (2131). The fixed threaded rod (26) is connected to the fixed nut (27) by thread. The upper tube plate (21) is provided with a second input pipe (214) and a second output pipe (215). The vessel body (11) is provided with a first input pipe (114) and a first output pipe (115). The two ends of the first connecting hose (24) are respectively connected to the first input pipe (114) and the second input pipe (214) through the first quick-release connector (241). The two ends of the second connecting hose (25) are respectively connected to the first output pipe (115) and the second output pipe (215) through the second quick-release connector (251).

2. The quick-installation, detachable heat exchange tube polycondensation reactor according to claim 1, characterized in that: The upper tube sheet (21) is provided with a collecting cavity (211) and a return cavity (212). The tube bundle (23) is composed of several groups of U-shaped tubes (231) arranged in a ring array. The two ends of the U-shaped tubes (231) are connected to the collecting cavity (211) and the return cavity (212) respectively. The second input tube (214) is connected to the collecting cavity (211), and the second output tube (215) is connected to the return cavity (212).

3. The quick-installation, detachable heat exchange tube polycondensation reactor according to claim 1, characterized in that: The stirring device (3) includes a driving mechanism (31), a stirring shaft (32), and a stirring blade (33). The driving mechanism (31) is mounted on the lid (12). The stirring shaft (32) is mounted on the output shaft of the driving mechanism (31) and extends rotatably into the body (11) and is coaxially mounted on the body (11). The stirring blade (33) is mounted on the stirring shaft (32).

4. The quick-installation, detachable heat exchange tube polycondensation reactor according to claim 1, characterized in that: The vessel body (11) is provided with a support platform (116) for supporting the lower tube sheet (22).

5. The quick-installation, detachable heat exchange tube polycondensation reactor according to claim 1, characterized in that: The flange (213) is provided with a clearance groove (2132) for the passage of the first input pipe (114) and the first output pipe (115).

6. The quick-installation, detachable heat exchange tube polycondensation reactor according to claim 1, characterized in that: The fixed threaded rod (26) is provided in several groups, and the several groups of fixed threaded rods (26) are arranged in a ring array. The number of fixed holes (2131) is equal to the number of fixed threaded rods (26) and corresponds one-to-one.

7. The quick-installation, detachable heat exchange tube polycondensation reactor according to claim 1, characterized in that: The lid (12) is detachably mounted on the top of the vessel body (11) via flange bolts (14).

8. The quick-installation, detachable heat exchange tube polycondensation reactor according to claim 1, characterized in that: The top of the lid (12) is provided with several sets of connecting pipes (121).

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