Tubular reaction device for preparing glutaraldehyde

Abstract

The invention relates to the field of glutaraldehyde production, and discloses a tubular reaction device for preparing glutaraldehyde, the tubular reaction device comprises a kettle body, an upper partition plate horizontally arranged at the top of the kettle body and a lower partition plate horizontally arranged at the bottom of the kettle body, and a plurality of long-strip-shaped reaction tubes are uniformly arranged between the upper partition plate and the lower partition plate in a communicating manner; a plurality of rotating shafts in one-to-one correspondence with the reaction tubes are vertically and rotatably arranged at the top of the kettle body, stirring pieces matched with the reaction tubes are arranged at the bottoms of the rotating shafts, and a rotating mechanism for driving the rotating shafts to rotate is arranged at the top end of the kettle body; the reaction kettle has the effect of improving the temperature rise and heat dissipation efficiency of the reaction liquid.

Description

Technical Field

[0001] The invention relates to the technical field of glutaraldehyde production, in particular to a tubular reaction device for preparing glutaraldehyde. Background Art

[0002] Glutaraldehyde solution is an extremely important fine chemical product, widely used in oil fields, papermaking, metal processing and other fields. Glutaraldehyde is also an intermediate in organic synthesis, a tanning agent in the leather industry, and a protein cross-linking agent. Glutaraldehyde is also widely used as a bactericidal disinfectant in the fields of medicine, health, and food industry. The synthesis methods of glutaraldehyde include oxidation method, pyridine method, pyran method, etc.

[0003] Among them, the pyran method uses pyran as a raw material and heats it under acidic conditions to synthesize glutaraldehyde, which is usually carried out directly in a reactor. However, since the reaction needs to be heated to a certain temperature, the reactor is relatively large, resulting in slow heating of the reaction liquid in the middle of the reactor and a long reaction time. At the same time, the reaction for synthesizing glutaraldehyde is an exothermic reaction. If the heat released during the reaction cannot be discharged in time, it will cause the local temperature to be too high, affecting the reaction yield. Therefore, a reaction device that can improve the heating and heat dissipation efficiency of the reaction liquid is needed. Summary of the invention

[0004] The object of the present invention is to provide a tubular reaction device for preparing glutaraldehyde, which has the effect of improving the heating efficiency and heat dissipation efficiency of the reaction liquid.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: it includes a kettle body, an upper partition horizontally arranged on the top of the kettle body, and a lower partition horizontally arranged on the bottom of the kettle body, a plurality of long strip reaction tubes are evenly connected between the upper partition and the lower partition, a heating cavity is formed between the outer wall of the reaction tube and the kettle body, a heating tube connected to the heating cavity is arranged on the kettle body, a liquid inlet pipe is connected to the bottom of the kettle body, a liquid outlet pipe is connected to the top of the kettle body, a liquid outlet cavity is formed between the upper partition and the top of the kettle body, a liquid inlet cavity is formed between the lower partition and the bottom of the kettle body, a plurality of rotating shafts corresponding to the reaction tubes are vertically rotated at the top of the kettle body, a stirring member matching the reaction tubes is arranged at the bottom of the rotating shaft, and a rotating mechanism for driving the plurality of rotating shafts to rotate is arranged at the top of the kettle body.

[0006] By adopting the above technical scheme, when producing glutaraldehyde, firstly, hot water is passed from the heating pipe into the heating cavity to preheat the liquid inlet pipe, and then the mixed pyran and acid water reaction liquid is passed from the liquid inlet pipe into the liquid inlet cavity, and then the reaction liquid is transported upward from the bottom of multiple reaction tubes. During the process of the reaction liquid being transported upward in the reaction tubes, the heating cavity heats the reaction tubes in a water bath so that the pyran in the reaction liquid reacts to produce glutaraldehyde and methanol. At the same time, the rotating mechanism drives the multiple rotating shafts and the stirring elements to rotate, and stirs the reaction liquid in the reaction tubes, so that the reaction liquid is further mixed in the reaction tubes, and the forward reaction is promoted. At the same time, the heat generated during the reaction process is also rapidly diffused to the heating cavity under the stirring action of the stirring element, and the reaction liquid after the reaction enters the liquid outlet cavity from the top of the reaction tube and is discharged from the liquid outlet pipe; by setting the reaction tubes, the heating mechanism and the stirring element, the reaction liquid is heated to a temperature of 100 °C and the temperature of 100 °C is 400 °C. The large reaction chamber in the previous whole kettle body is replaced by a small reaction chamber in a slender reaction tube. At the same time, a heating chamber is provided to facilitate water bathing of each reaction tube at the same time. The cross-sectional area of ​​the reaction tube is greatly reduced relative to the cross-sectional area of ​​the kettle body, thereby greatly improving the heating efficiency of the reaction liquid in the reaction tube and shortening the heating time. In addition, a stirring member is provided to guide the reaction liquid in the reaction tube, promote further mixing of the reaction liquid, and facilitate the forward progress of the reaction liquid. At the same time, the stirring of the stirring member improves the heat exchange efficiency between the reaction liquid and the heating chamber, which can promote rapid heating of the reaction liquid and quickly discharge the heat generated by the reaction, thereby improving the heat dissipation efficiency, thereby facilitating the temperature of the reaction liquid to always remain within the required range, reducing the occurrence of side reactions, thereby shortening the reaction time and improving the yield of the reaction.

[0007] The present invention is further configured as follows: the rotating shaft includes a central rotating shaft located in the middle of the kettle body, a plurality of first rotating shafts distributed in a circle, and a plurality of second rotating shafts distributed in a circle located between the first rotating shaft and the central rotating shaft; the rotating mechanism includes a first gear arranged on the central rotating shaft and a second gear arranged on the second rotating shaft and meshing with the first gear; a reduction motor for driving the first gear to rotate is arranged on the top of the kettle body; a large gear ring is rotatably arranged on the kettle body, the second gear meshes with the inner side of the large gear ring; a third gear is arranged on the first rotating shaft, and the third gear meshes with the outer side of the large gear ring.

[0008] By adopting the above technical solution, during the reaction process, the reduction motor is turned on to drive the first gear to rotate, thereby driving the central shaft and the second gear to rotate. The second gear rotates while driving the second shaft and the large gear ring to rotate, and the large gear ring then drives the third gear to rotate, thereby realizing the rotation of the first shaft, the second shaft and the central shaft, and then realizing the rotation of the stirring elements in multiple reaction tubes; by setting the first gear, the second gear and the third gear, etc., through the meshing between the gears and the transmission of the large gear ring, the rotation of the stirring elements in all the reaction tubes is realized, and there is no need to set up multiple power devices, thereby achieving the purpose of saving energy.

[0009] The present invention is further configured as follows: the radius of the first gear is equal to the radius of the second gear.

[0010] By adopting the above technical solution, the radius of the first gear and the second gear are set to be the same, so that the rotation speed of the second rotating shaft is equal to that of the central rotating shaft. At the same time, the number of teeth on the third gear is matched with the inner teeth and outer teeth of the large gear ring, so that the rotation speed of the first rotating shaft is the same as that of the second rotating shaft, thereby achieving synchronous rotation of the first rotating shaft, the second rotating shaft and the central rotating shaft, and achieving synchronous rotation of multiple stirring elements, ensuring that the reaction of the reaction liquid in different reaction tubes can proceed normally.

[0011] The present invention is further configured as follows: the stirring member includes a plurality of stirring units connected end to end in sequence, the stirring units are movably fitted to the inner wall of the reaction tube, the stirring units include a plurality of first stirring plates and second stirring plates arranged in a scissor-fork manner, a plurality of first material passing holes are opened at the lower part of the first stirring plate, and a plurality of second material passing holes are opened at the top of the second stirring plate.

[0012] The present invention is further configured as follows: the second material passing hole is located directly above the adjacent first material passing hole.

[0013] By adopting the above technical scheme, a first stirring plate and a second stirring plate are arranged in a scissor-like distribution. When the rotating shaft drives the first stirring plate and the second stirring plate to rotate, the first stirring plate and the second stirring plate, which are respectively inclined, can guide the reaction liquid, so that the reaction liquid moves upward through the first material hole and the second material hole in a spiral shape. At the same time, since the first stirring plate and the second stirring plate will block a part of the reaction liquid, a part of the reaction liquid moves upward through the first material hole, and a part of the reaction liquid will be mixed with the subsequent reaction liquid under the obstruction of the first stirring plate and the second stirring plate and then move upward successively, so that the reaction liquid is mixed more evenly, which is beneficial to the reaction. Therefore, although the time required for the reaction liquid to pass through the reaction tube is extended, the reaction liquids before and after can be further mixed. At the same time, the reaction liquid is pushed by the first stirring plate and the second stirring plate distributed in a scissor-like manner, so that part of the reaction liquid can quickly rise through the first material hole and the second material hole, thereby ensuring the efficiency of the reaction.

[0014] The present invention is further configured as follows: a plurality of third material passing holes are provided at the lower portion of the second stirring plate, and a plurality of fourth material passing holes are provided at the top portion of the first stirring plate.

[0015] The present invention is further configured as follows: the fourth material passing hole is located directly above the adjacent third material passing hole.

[0016] By adopting the above technical solution, the third and fourth material through holes are set, which can promote the forward and backward reactions of the reaction liquid and increase the speed at which the reaction liquid moves upward through the first stirring plate and the second stirring plate, thereby shortening the time required for the reaction.

[0017] The present invention is further configured as follows: the stirring unit includes two first stirring plates and the second stirring plates arranged in a scissor-like manner, a first cavity is formed between the lower half of the first stirring plate and the lower half of the second stirring plate, a second cavity is formed between the lower half of the first stirring plate and the upper half of the second stirring plate, a third cavity is formed between the upper half of the first stirring plate and the lower half of the second stirring plate, and a fourth cavity is formed between the upper half of the first stirring plate and the upper half of the second stirring plate.

[0018] By adopting the above technical solution, after the reaction liquid enters the reaction tube, part of the reaction liquid enters the second cavity and the third cavity from the first cavity through the first material through hole and the third material through hole, and then the reaction liquid entering the second cavity and the third cavity rotates under the drive of the stirring member, which can accelerate the reaction between the raw materials in the reaction liquid, and then part of the reaction liquid enters the fourth cavity through the second cavity and the third cavity, and part of the reaction liquid is retained in the third cavity and the second cavity under the centrifugal force and the blocking effect of the first stirring plate and the second stirring plate, and is mixed and reacted with the subsequent reaction liquid, thereby achieving the purpose of promoting the mixing of the reaction liquid and promoting the reaction efficiency.

[0019] The present invention is further configured as follows: the first material through hole, the second material through hole, the third material through hole and the fourth material through hole are all in the shape of elongated strips.

[0020] By adopting the above technical solution, the first material through hole, the second material through hole, the third material through hole and the fourth material through hole are set to be long strips, increasing the area of ​​the reaction liquid passing through the first stirring plate and the second stirring plate, thereby increasing the efficiency of the reaction liquid passing through and avoiding the reaction liquid from staying in the reaction tube for too long.

[0021] The present invention is further configured such that: the first stirring plate and the second stirring plate are both made of heat-conducting material.

[0022] By adopting the above technical solution, the reaction liquid undergoes an exothermic reaction between the first stirring plate and the second stirring plate, and the heat generated by the reaction can be quickly heat exchanged with the hot water in the reaction tube and the heating chamber through the first stirring plate and the second stirring plate, thereby improving the heat dissipation efficiency of the reaction and avoiding excessively high local temperature of the reaction liquid that affects the yield.

[0023] The beneficial effects of the present invention are:

[0024] 1. By setting a reaction tube, a heating chamber and a stirring member, the large reaction chamber in the previous integral kettle body is replaced with a small reaction chamber in a slender reaction tube. At the same time, a heating chamber is set to facilitate water bathing of each reaction tube at the same time. The cross-sectional area of ​​the reaction tube is greatly reduced relative to the cross-sectional area of ​​the kettle body, thereby greatly improving the heating efficiency of the reaction liquid in the reaction tube and shortening the heating time. In addition, a stirring member is set to guide the reaction liquid in the reaction tube, promote further mixing of the reaction liquid, and facilitate the forward progress of the reaction liquid. At the same time, the stirring of the stirring member improves the heat exchange efficiency between the reaction liquid and the heating chamber, which can promote rapid heating of the reaction liquid and quickly discharge the heat generated by the reaction, thereby improving the heat dissipation efficiency, thereby facilitating the temperature of the reaction liquid to always remain within the required range, reducing the occurrence of side reactions, thereby shortening the reaction time and improving the reaction yield.

[0025] 2. By setting the first gear, the second gear and the third gear, etc., through the meshing between the gears and the transmission of the large gear ring, the rotation of the stirring members in all the reaction tubes is realized, and there is no need to set up multiple power devices, thereby achieving the purpose of energy saving.

[0026] 3. By setting the first stirring plate and the second stirring plate in a scissor-shaped distribution, when the rotating shaft drives the first stirring plate and the second stirring plate to rotate, the first stirring plate and the second stirring plate that are respectively inclined can guide the reaction liquid, so that the reaction liquid moves upward through the first material hole and the second material hole in a spiral shape. At the same time, since the first stirring plate and the second stirring plate will block a part of the reaction liquid, a part of the reaction liquid moves upward through the first material hole, and a part of the reaction liquid will be mixed with the subsequent reaction liquid under the obstruction of the first stirring plate and the second stirring plate and then move upward successively, so that the reaction liquid is mixed more evenly, which is conducive to the forward progress of the reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1It is a structural schematic diagram of an embodiment of a tubular reaction device for preparing glutaraldehyde according to the present invention;

[0029] Figure 2 yes Figure 1 A magnified schematic diagram

[0030] Figure 3 It is a partial cross-sectional structural schematic diagram of an embodiment of a tubular reaction device for preparing glutaraldehyde according to the present invention;

[0031] Figure 4 yes Figure 3 A magnified schematic diagram of B.

[0032] In the figure, 1, kettle body; 2, upper partition; 3, lower partition; 4, reaction tube; 5, heating cavity; 6, heating tube; 7, liquid inlet pipe; 8, liquid outlet pipe; 9, liquid outlet cavity; 10, liquid inlet cavity; 11, rotating shaft; 11a, central rotating shaft; 11b, first rotating shaft; 11c, second rotating shaft; 12, stirring member; 12a, first stirring plate; 12b, second stirring plate; 13, rotating mechanism; 13a, first gear; 13b, second gear; 14, reduction motor; 15, large gear ring; 16, third gear; 17, first feeding hole; 18, second feeding hole; 19, third feeding hole; 20, fourth feeding hole; 21, first cavity; 22, second cavity; 23, third cavity; 24, fourth cavity. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The present invention provides a tubular reaction device for preparing glutaraldehyde, such as Figures 1 to 4As shown, it includes a kettle body 1, an upper partition plate 2 horizontally arranged on the top of the kettle body 1, and a lower partition plate 3 horizontally arranged on the bottom of the kettle body 1, a plurality of long strip reaction tubes 4 are evenly connected between the upper partition plate 2 and the lower partition plate 3, a heating cavity 5 is formed between the outer wall of the reaction tube 4 and the kettle body 1, a heating tube 6 connected with the heating cavity 5 is arranged on the kettle body 1, a liquid inlet pipe 7 is connected to the bottom of the kettle body 1, a liquid outlet pipe 8 is connected to the top of the kettle body 1, a liquid outlet cavity 9 is formed between the upper partition plate 2 and the top of the kettle body 1, a liquid inlet cavity 10 is formed between the lower partition plate 3 and the bottom of the kettle body 1, a plurality of rotating shafts 11 corresponding to the reaction tubes 4 are vertically rotatably arranged on the top of the kettle body 1, a stirring member 12 matched with the reaction tubes 4 is arranged at the bottom of the rotating shaft 11, and a rotating mechanism 13 for driving the plurality of rotating shafts 11 to rotate is arranged at the top of the kettle body 1.

[0035] Furthermore, the rotating shaft 11 includes a central rotating shaft 11a located in the middle of the kettle body 1, a plurality of first rotating shafts 11b distributed in a circle, and a plurality of second rotating shafts 11c distributed in a circle between the first rotating shaft 11b and the central rotating shaft 11a. The rotating mechanism 13 includes a first gear 13a arranged on the central rotating shaft 11a and a second gear 13b arranged on the second rotating shaft 11c and meshing with the first gear 13a. A reduction motor 14 for driving the first gear 13a to rotate is arranged on the top of the kettle body 1. A large gear ring 15 is rotatably arranged on the kettle body 1, and the second gear 13b is meshed with the inner side of the large gear ring 15. A third gear 16 is arranged on the first rotating shaft 11b, and the third gear 16 is meshed with the outer side of the large gear ring 15.

[0036] Furthermore, the radius of the first gear 13a is equal to that of the second gear 13b.

[0037] Furthermore, the stirring member 12 includes a plurality of stirring units connected end to end in sequence, the stirring units are movably fitted to the inner wall of the reaction tube 4, the stirring units include a plurality of first stirring plates 12a and second stirring plates 12b arranged in a scissor-like manner, a plurality of first material passing holes 17 are opened at the lower part of the first stirring plate 12a, and a plurality of second material passing holes 18 are opened at the top of the second stirring plate 12b.

[0038] Furthermore, the second material passing hole 18 is located directly above the adjacent first material passing hole 17 .

[0039] Furthermore, a plurality of third material passing holes 19 are formed at the lower portion of the second stirring plate 12 b , and a plurality of fourth material passing holes 20 are formed at the top portion of the first stirring plate 12 a .

[0040] Furthermore, the fourth material passing hole 20 is located directly above the adjacent third material passing hole 19 .

[0041] Further, the stirring unit includes two first stirring plates 12a and second stirring plates 12b arranged in a scissor-like manner, a first cavity 21 is formed between the lower half of the first stirring plate 12a and the lower half of the second stirring plate 12b, a second cavity 22 is formed between the lower half of the first stirring plate 12a and the upper half of the second stirring plate 12b, a third cavity 23 is formed between the upper half of the first stirring plate 12a and the lower half of the second stirring plate 12b, and a fourth cavity 24 is formed between the upper half of the first stirring plate 12a and the upper half of the second stirring plate 12b.

[0042] Furthermore, the first material passage hole 17 , the second material passage hole 18 , the third material passage hole 19 and the fourth material passage hole 20 are all in the shape of elongated strips.

[0043] Furthermore, the first stirring plate 12a and the second stirring plate 12b are both made of heat-conducting material.

[0044] When producing glutaraldehyde, firstly, hot water is passed from the heating tube 6 into the heating cavity 5 to preheat the liquid inlet tube 7, and then the mixed pyran and acid water reaction liquid is passed from the liquid inlet tube 7 into the liquid inlet cavity 10, and then the reaction liquid is transported upward from the bottom of the multiple reaction tubes 4. During the upward transportation of the reaction liquid in the reaction tubes 4, the heating cavity 5 performs water bath heating on the reaction tubes 4 so that the pyran in the reaction liquid reacts to produce glutaraldehyde and methanol. At the same time, the rotating mechanism 13 drives the multiple rotating shafts 11 and the stirring member 12 to rotate, and the first stirring plate 12a and the second stirring plate 12b stir the reaction liquid in the reaction tube 4 so that the reaction liquid is further mixed in the reaction tube 4 to promote the forward reaction. At the same time, the heat generated during the reaction is also rapidly diffused to the heating cavity 5 under the stirring action of the stirring member 12, and the reaction liquid after the reaction enters the liquid outlet cavity 9 from the top of the reaction tube 4 and is discharged from the liquid outlet pipe 8. By setting The reaction tube 4, the heating chamber 5 and the stirring member 12, etc., replace the large reaction chamber in the previous overall kettle body 1 with a small reaction chamber in the slender reaction tube 4, and set the heating chamber 5 at the same time, so as to facilitate the water bathing of each reaction tube 4 at the same time. The cross-sectional area of ​​the reaction tube 4 is greatly reduced relative to the cross-sectional area of ​​the kettle body 1, thereby greatly improving the heating efficiency of the reaction liquid in the reaction tube 4 and shortening the heating time. In addition, the stirring member 12 is set to guide the reaction liquid in the reaction tube 4, promote further mixing of the reaction liquid, and facilitate the forward progress of the reaction liquid. At the same time, the stirring of the stirring member 12 improves the heat exchange efficiency between the reaction liquid and the heating chamber 5, can promote the rapid heating of the reaction liquid, and can also quickly discharge the heat generated by the reaction, thereby improving the heat dissipation efficiency, which is beneficial to the temperature of the reaction liquid always being kept within the required range, reducing the occurrence of side reactions, thereby shortening the reaction time and improving the reaction yield.

[0045] During the reaction process, the reduction motor 14 is turned on to drive the first gear 13a to rotate, thereby driving the central shaft 11a and the second gear 13b to rotate. The second gear 13b rotates while driving the second shaft 11c and the large gear ring 15 to rotate. The large gear ring 15 then drives the third gear 16 to rotate, thereby realizing the rotation of the first shaft 11b, the second shaft 11c and the central shaft 11a, and then realizing the rotation of the stirring members 12 in multiple reaction tubes 4; by setting the first gear 13a, the second gear 13b and the third gear 16, etc., through the meshing between the gears and the transmission of the large gear ring 15, the rotation of the stirring members 12 in all the reaction tubes 4 is realized, and there is no need to set up multiple power devices, thereby achieving the purpose of saving energy.

[0046] By setting the radius of the first gear 13a and the second gear 13b to be the same, the rotation speed of the second rotating shaft 11c is equal to that of the central rotating shaft 11a. At the same time, the number of teeth on the third gear 16 is matched with the inner teeth and outer teeth of the large ring gear 15, so that the rotation speed of the first rotating shaft 11b and the second rotating shaft 11c is the same, thereby achieving synchronous rotation of the first rotating shaft 11b, the second rotating shaft 11c and the central rotating shaft 11a, and achieving synchronous rotation of multiple stirring members 12, ensuring that the reaction of the reaction liquid in different reaction tubes 4 can proceed normally.

[0047] By setting the first stirring plate 12a and the second stirring plate 12b distributed in a scissor-like manner, when the rotating shaft 11 drives the first stirring plate 12a and the second stirring plate 12b to rotate, the first stirring plate 12a and the second stirring plate 12b, which are respectively inclined, can guide the reaction liquid, so that the reaction liquid moves upward through the first material hole 17 and the second material hole 18 in a spiral shape. At the same time, since the first stirring plate 12a and the second stirring plate 12b will block a part of the reaction liquid, a part of the reaction liquid moves upward through the first material hole 17, and a part of the reaction liquid will be mixed with the subsequent reaction liquid under the obstruction of the first stirring plate 12a and the second stirring plate 12b and then move upward successively, so that the reaction liquid is mixed more evenly, which is conducive to the reaction. Therefore, although the time required for the reaction liquid to pass through the reaction tube 4 is extended, the reaction liquids before and after can be further mixed. At the same time, the reaction liquid is pushed by the first stirring plate 12a and the second stirring plate 12b distributed in a scissor-like manner, so that part of the reaction liquid can quickly rise through the first material hole 17 and the second material hole 18, thereby ensuring the efficiency of the reaction.

[0048] By providing the third material through hole 19 and the fourth material through hole 20, the forward and backward reactions of the reaction liquid are promoted while the speed at which the reaction liquid moves upward through the first stirring plate 12a and the second stirring plate 12b is increased, thereby shortening the time required for the reaction.

[0049] After the reaction liquid enters the reaction tube 4, part of the reaction liquid enters the second cavity 22 and the third cavity 23 from the first cavity 21 through the first material hole 17 and the third material hole 19. Then, the reaction liquid entering the second cavity 22 and the third cavity 23 rotates under the drive of the stirring member 12, which can accelerate the reaction between the raw materials in the reaction liquid. Then, part of the reaction liquid enters the fourth cavity 24 through the second cavity 22 and the third cavity 23. Part of the reaction liquid is retained in the third cavity 23 and the second cavity 22 under the centrifugal force and the blocking effect of the first stirring plate 12a and the second stirring plate 12b, and is mixed and reacted with the subsequent reaction liquid, thereby achieving the purpose of promoting the mixing of the reaction liquid and promoting the reaction efficiency.

[0050] By setting the first material through hole 17, the second material through hole 18, the third material through hole 19 and the fourth material through hole 20 as long strips, the area of ​​the reaction liquid passing through the first stirring plate 12a and the second stirring plate 12b is increased, thereby increasing the efficiency of the reaction liquid passing through and avoiding the reaction liquid from staying in the reaction tube 4 for too long.

[0051] By setting the first stirring plate 12a and the second stirring plate 12b to be made of heat-conducting materials, the reaction liquid undergoes an exothermic reaction between the first stirring plate 12a and the second stirring plate 12b, and the heat generated by the reaction can be quickly heat-exchanged with the hot water in the reaction tube 4 and the heating chamber 5 through the first stirring plate 12a and the second stirring plate 12b, thereby improving the heat dissipation efficiency of the reaction and preventing the local temperature of the reaction liquid from being too high and affecting the yield.

[0052] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0053] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A tubular reaction device for preparing glutaraldehyde, characterized in that: The invention comprises a kettle body (1), an upper baffle (2) horizontally arranged at the top of the kettle body (1), and a lower baffle (3) horizontally arranged at the bottom of the kettle body (1); a plurality of long strip reaction tubes (4) are evenly connected between the upper baffle (2) and the lower baffle (3); a heating cavity (5) is formed between the outer wall of the reaction tube (4) and the kettle body (1); a heating tube (6) connected to the heating cavity (5) is arranged on the kettle body (1); a liquid inlet pipe (7) is connected to the bottom of the kettle body (1); and a liquid inlet pipe (8) is connected to the top of the kettle body (1). A liquid outlet pipe (8) is arranged, a liquid outlet cavity (9) is formed between the upper partition plate (2) and the top of the kettle body (1), a liquid inlet cavity (10) is formed between the lower partition plate (3) and the bottom of the kettle body (1), a plurality of rotating shafts (11) corresponding to the reaction tubes (4) are arranged vertically at the top of the kettle body (1), a stirring member (12) matching the reaction tubes (4) is arranged at the bottom of the rotating shafts (11), and a rotating mechanism (13) for driving the plurality of rotating shafts (11) to rotate is arranged at the top of the kettle body (1).

2. A tubular reaction device for preparing glutaraldehyde according to claim 1, characterized in that: The rotating shaft (11) comprises a central rotating shaft (11a) located in the middle of the kettle body (1), a plurality of first rotating shafts (11b) distributed in a circumferential manner, and a plurality of second rotating shafts (11c) distributed in a circumferential manner and located between the first rotating shaft (11b) and the central rotating shaft (11a); the rotating mechanism (13) comprises a first gear (13a) arranged on the central rotating shaft (11a) and a second gear (13b) arranged on the second rotating shaft (11c) and meshing with the first gear (13a); a reduction motor (14) for driving the first gear (13a) to rotate is arranged on the top of the kettle body (1); a large gear ring (15) is rotatably arranged on the kettle body (1), the second gear (13b) meshing with the inner side of the large gear ring (15); a third gear (16) is arranged on the first rotating shaft (11b), and the third gear (16) meshing with the outer side of the large gear ring (15).

3. A tubular reaction device for preparing glutaraldehyde according to claim 2, characterized in that: The radius of the first gear (13a) and the radius of the second gear (13b) are equal.

4. A tubular reaction device for preparing glutaraldehyde according to claim 1, characterized in that: The stirring member (12) comprises a plurality of stirring units connected end to end in sequence, the stirring units being movably fitted to the inner wall of the reaction tube (4), the stirring units comprising a plurality of first stirring plates (12a) and second stirring plates (12b) arranged in a scissor-like manner, a plurality of first material passing holes (17) being provided at the bottom of the first stirring plate (12a), and a plurality of second material passing holes (18) being provided at the top of the second stirring plate (12b).

5. A tubular reaction device for preparing glutaraldehyde according to claim 4, characterized in that: The second material passing hole (18) is located directly above the adjacent first material passing hole (17).

6. A tubular reaction device for preparing glutaraldehyde according to claim 5, characterized in that: A plurality of third material passing holes (19) are provided at the bottom of the second stirring plate (12b), and a plurality of fourth material passing holes (20) are provided at the top of the first stirring plate (12a).

7. A tubular reaction device for preparing glutaraldehyde according to claim 6, characterized in that: The fourth material passing hole (20) is located directly above the adjacent third material passing hole (19).

8. A tubular reaction device for preparing glutaraldehyde according to claim 4, characterized in that: The stirring unit comprises two first stirring plates (12a) and second stirring plates (12b) arranged in a scissor-like manner, wherein a first cavity (21) is formed between the lower half of the first stirring plate (12a) and the lower half of the second stirring plate (12b), a second cavity (22) is formed between the lower half of the first stirring plate (12a) and the upper half of the second stirring plate (12b), a third cavity (23) is formed between the upper half of the first stirring plate (12a) and the lower half of the second stirring plate (12b), and a fourth cavity (24) is formed between the upper half of the first stirring plate (12a) and the upper half of the second stirring plate (12b).

9. A tubular reaction device for preparing glutaraldehyde according to claim 6, characterized in that: The first material passing hole (17), the second material passing hole (18), the third material passing hole (19) and the fourth material passing hole (20) are all in the shape of elongated strips.

10. A tubular reaction device for preparing glutaraldehyde according to claim 4, characterized in that: The first stirring plate (12a) and the second stirring plate (12b) are both made of heat-conducting material.

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