Reactor for urotropine production

Abstract

The utility model relates to the technical field of urotropine production, and discloses a reactor for urotropine production, which comprises a reactor, a mother liquor inlet pipe and a discharge box are respectively arranged on the side wall of the reactor, the mother liquor inlet pipe and the discharge box are respectively positioned on two sides of the reactor, a first air inlet piece is arranged in the reactor, and a second air inlet piece is arranged in the reactor. The gas inlet piece I comprises a central column, a ventilation channel I, a hollow connecting pipe I, a hollow column, a gas hole I and a gas inlet pipe I. In the production and use process of urotropine, the gas inlet piece I is an ammonia gas inlet, the gas inlet piece II is a formaldehyde gas inlet, and the urotropine is generated through condensation reaction of ammonia gas and formaldehyde gas; through the arrangement of the gas inlet piece I and the gas inlet piece II, ammonia gas and formaldehyde gas are uniformly mixed and fully reacted, and in the reaction process, the driving piece drives the central column to rotate, so that the reaction efficiency of the ammonia gas and the formaldehyde gas is improved, and the device has the characteristics of high practicability and uniform mixing.

Description

TECHNICAL FIELD

[0001] The utility model relates to the production technology field of urotropine, specifically to a reactor for urotropine production. BACKGROUND

[0002] Urotropine is an important chemical product, which can be used as a curing agent for phenolic plastic, a catalyst for aminoplastics and a promoter for rubber vulcanization, and can be used as a shrinkage inhibitor for textile production, a preservative for food processing and a diuretic for medicine. Formaldehyde and ammonia are used as raw materials for the industrial production of urotropine.

[0003] Currently, the production of urotropine mainly adopts a gas phase method. Formaldehyde gas and ammonia gas undergo ammoniation reaction in a urotropine mother liquor environment, and then urotropine is extracted from the mother liquor to obtain the product through crystallization and filtration by a mother liquor circulation filtration device. Ammonia gas is easily soluble in water, so it is necessary to prevent the problem of mother liquor backflow caused by ammonia gas dissolution during production. In addition, the position where ammonia gas dissolves in the mother liquor will release a large amount of heat, which promotes the synthesis reaction of urotropine in the local direction, but from the overall point of view, this local intense boiling reaction causes the formaldehyde gas and ammonia gas to not mix uniformly, and the two gases volatilize in gaseous form under this temperature and boiling state, which affects the yield and efficiency of the final product. Therefore, it is necessary to design a reactor for urotropine production that has strong practicability and uniform mixing. SUMMARY

[0004] The utility model aims to provide a reactor for urotropine production to solve the problems in the background art.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a reactor for urotropine production, comprising a reactor, a mother liquor inlet pipe and a discharge box are arranged on the side wall of the reactor, the mother liquor inlet pipe and the discharge box are located on both sides of the reactor, an air inlet part one is arranged in the reactor, the air inlet part one comprises a center column, an air passage one, a hollow connecting pipe one, a hollow column, an air hole one and an air inlet pipe one, the center column is movably installed at the middle position in the reactor, the hollow column is evenly arranged around the center column, the air holes one are evenly distributed on the side wall of the hollow column, the air passage one is arranged in the center column, the hollow connecting pipe one and the center column are communicated through the air passage one, the center column extends out of the lower end face of the reactor, and the air inlet pipe one is movably installed at the lower end of the center column, a driving part is arranged on the upper end of the reactor, and the driving part controls the rotation of the center column, an air inlet part two is arranged outside the reactor, the air inlet part two is arranged at the bottom of the reactor, an exhaust pipe is fixedly installed on the upper end of the reactor, and a sealing cover one is threadedly connected to the exhaust pipe.

[0006] According to the technical scheme, the air inlet part two comprises an arc-shaped air inlet ring, an air inlet channel two, a hollow connecting pipe two, air holes two and an air inlet pipe two, the arc-shaped air inlet ring is sleeved on the reactor outside through the hollow connecting pipe two, the hollow connecting pipe two is uniformly distributed in a fan shape between the reactor and the arc-shaped air inlet ring, the air holes two are penetrated in the side wall of the reactor, the air holes two and the hollow connecting pipe two are arranged in one-to-one correspondence, the hollow connecting pipe two is communicated with the inside of the reactor through the air holes two, the air inlet pipe two is fixedly installed on one side of the arc-shaped air inlet ring, the air inlet channel two is arranged in the arc-shaped air inlet ring, and the hollow connecting pipe two and the air inlet pipe two are communicated through the air inlet channel two.

[0007] According to the technical scheme, the discharge box comprises a discharge port, an external connection box, a baffle and a discharge pipe, the discharge port is penetrated in the side wall of the reactor, the external connection box is fixedly installed at one end of the discharge port, a discharging port is penetrated in the lower end of the external connection box, the baffle is movably installed in the discharging port, the discharge pipe is fixedly installed at one end of the external connection box, a control valve is fixedly installed on the discharge pipe, and an inclined landslide is arranged in the reactor.

[0008] According to the technical scheme, the driving part comprises a driving motor, a driving gear, a driven gear, a connecting shaft and a protection box, the connecting shaft is movably installed on the upper end of the reactor, the lower end of the connecting shaft extends into the reactor and is fixedly connected with the central column, the driven gear is fixedly installed on the upper end of the connecting shaft, the driving motor is fixedly installed at the edge of the upper end of the reactor and the output end is fixedly installed with the driving gear, the driving gear is engaged with the driven gear, and the protection box is fixedly installed on the upper end of the reactor, wherein the driving motor, the driving gear, the driven gear and the connecting shaft are located in the protection box.

[0009] According to the technical scheme, the reactor is provided with a supplementary material inlet pipe, the supplementary material inlet pipe is located above the discharge box, the supplementary material inlet pipe comprises a sealing cover two, a feeding bin and a hollow connecting pipe three, the feeding bin is arranged on one side of the reactor through the hollow connecting pipe three, and the sealing cover two is screw-connected on the upper end of the feeding bin.

[0010] According to the technical scheme, the reactor comprises a base, a kettle body and a top cover, the base, the kettle body and the top cover are sequentially arranged from bottom to top, the base, the kettle body and the top cover are fixedly connected through fastening bolts, and the front and rear side walls of the kettle body are provided with transparent observation windows.

[0011] According to the technical scheme, the kettle body is uniformly distributed with supporting legs at the lower end, and rubber shock-absorbing pads are fixedly installed at the lower end of the supporting legs.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] (1) the application is in the production and use process of urotropine, the air inlet piece one is ammonia gas inlet, the air inlet piece two is formaldehyde gas inlet, and urotropine is generated through the condensation reaction of ammonia gas and formaldehyde gas, the setting of the air inlet piece one and the air inlet piece two makes ammonia gas and formaldehyde gas mix evenly, fully react, and in the reaction process, the center column is rotated through the driving piece, the reaction efficiency of ammonia gas and formaldehyde gas is improved;

[0014] (2) in the gas phase production of urotropine, adding appropriate catalyst can significantly improve the reaction efficiency, according to the demand, adding appropriately, when adding, opening the sealing cover two, through the feeding bin, it can be conveniently added;

[0015] (3) through the setting of the base, the kettle body and the top cover, the reactor can be conveniently disassembled, the kettle body is cleaned, the kettle body is conveniently cleaned through the transparent observation window, and the production process of urotropine is monitored. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model.In the drawings:

[0017] Figure 1 It is the first three-dimensional schematic view of the utility model;

[0018] Figure 2 It is the second three-dimensional schematic view of the utility model;

[0019] Figure 3 It is the third three-dimensional schematic view of the utility model;

[0020] Figure 4 It is the fourth three-dimensional schematic view of the utility model;

[0021] Figure 5 It is the fifth three-dimensional schematic view of the utility model;

[0022] Figure 6 It is the local three-dimensional schematic view of the utility model;

[0023] In the figure: 1-reactor, 11-base, 12-kettle body, 121-transparent observation window, 122-supporting leg, 123-rubber damping pad, 13-top cover, 2-mother liquor inlet pipe, 3-discharge box, 31-discharge port, 32-external box, 33-baffle, 34-discharge pipe, 4-gas inlet part one, 41-center column, 42-gas passage one, 43-hollow connecting pipe one, 44-hollow column, 45-gas hole one, 46-gas inlet pipe one, 5-driving part, 51-driving motor, 52-driving gear, 53-driven gear, 54-connecting shaft, 55-protection box, 6-gas part two, 61-arc-shaped gas inlet ring, 62-gas passage two, 63-hollow connecting pipe two, 64-gas hole two, 65-gas inlet pipe two, 7-gas outlet pipe, 71-sealing cover one, 8-inclined landslide, 9-accessory inlet pipe, 91-sealing cover two, 92-feeding bin, 93-hollow connecting pipe three. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Please refer to Figures 1-6 The utility model provides technical scheme: a reactor for urotropine production, including reactor 1, the reactor 1 side wall is equipped with mother liquor inlet pipe 2 and discharge box 3 respectively, mother liquor inlet pipe 2 and discharge box 3 are located on the both sides of reactor 1 respectively, the reactor 1 is equipped with gas inlet part one 4, gas inlet part one 4 includes center column 41, gas passage one 42, hollow connecting pipe one 43, hollow column 44, gas hole one 45 and gas inlet pipe one 46, center column 41 is movably installed in the middle position in the reactor 1, hollow column 44 is evenly arranged in the periphery of center column 41, gas hole one 45 is evenly distributed in the side wall of hollow column 44, gas passage one 42 is set in center column 41, hollow connecting pipe one 43 and center column 41 are communicated through gas passage one 42, the lower end of center column 41 extends out of the lower end surface of reactor 1 and movably installs gas inlet pipe one 46, the upper end of reactor 1 is equipped with driving part 5 and driving part 5 controls the rotation of center column 41, the reactor 1 is equipped with gas inlet part two 6, gas inlet part two 6 is arranged in the bottom of reactor 1, the upper end of reactor 1 is fixedly installed with gas outlet pipe 7 and sealing cover one 71 is threadedly connected on gas outlet pipe 7;

[0026] The application adopts gas phase method to produce urotropine in the production and use of urotropine. The mother liquor inlet pipe 2 is connected with the external liquid supply end. The mother liquor such as water, ethanol, acetone and the like is introduced into the mother liquor inlet pipe 2. The gas inlet part one 4 is the ammonia gas inlet. The gas inlet part two 6 is the formaldehyde gas inlet. The urotropine is generated by the condensation reaction of ammonia gas and formaldehyde gas. The gas inlet part one 4 includes a center column 41, a gas passage one 42, a hollow connecting pipe one 43, a hollow column 44, a gas hole one 45 and a gas inlet pipe one 46. The gas inlet pipe one 46 is connected with the external ammonia gas supply device. The gas inlet pipe one 46 can be fixedly connected with the external ammonia gas supply device to ensure the stability of the placement. The ammonia gas flows through the center column 41, the gas passage one 42, the hollow connecting pipe one 43, the hollow column 44 and the gas hole one 45 in sequence through the gas inlet pipe one 46 and is uniformly distributed in the reactor 1 through the gas hole one 45. The gas inlet part two 6 is the formaldehyde gas inlet. The formaldehyde gas is transported into the interior through the gas inlet part two 6 to uniformly mix the ammonia gas and the formaldehyde gas. The reaction is fully carried out. The center column 41 is driven to rotate by the driving part 5 in the reaction process to improve the reaction efficiency of the ammonia gas and the formaldehyde gas. A little excess ammonia gas (for example, 1:1.1 to 1:1.2) is used in the reaction process to ensure the complete reaction and improve the yield. The specific molar ratio can be appropriately adjusted according to the experimental conditions and the specific conditions of the equipment.

[0027] Specifically, the gas inlet part two 6 includes an arc-shaped gas inlet ring 61, a gas passage two 62, a hollow connecting pipe two 63, a gas hole two 64 and a gas inlet pipe two 65. The arc-shaped gas inlet ring 61 is sleeved on the outside of the reactor 1 through the hollow connecting pipe two 63. The hollow connecting pipe two 63 is uniformly distributed between the reactor 1 and the arc-shaped gas inlet ring 61 in a fan shape. The gas hole two 64 is penetrated in the side wall of the reactor 1. The gas hole two 64 and the hollow connecting pipe two 63 are arranged one by one. The hollow connecting pipe two 63 is communicated with the inside of the reactor 1 through the gas hole two 64. The gas inlet pipe two 65 is fixedly installed on one side of the arc-shaped gas inlet ring 61. The gas passage two 62 is arranged in the arc-shaped gas inlet ring 61. The hollow connecting pipe two 63 and the gas inlet pipe two 65 are communicated through the gas passage two 62.

[0028] Through the arrangement of the arc-shaped gas inlet ring 61, the gas passage two 62, the hollow connecting pipe two 63, the gas hole two 64 and the gas inlet pipe two 65, the gas inlet pipe two 65 is connected with the external formaldehyde gas supply device. The formaldehyde gas flows through the arc-shaped gas inlet ring 61, the gas passage two 62, the hollow connecting pipe two 63 and the gas hole two 64 in sequence and is uniformly distributed in the bottom of the reactor 1 through the gas hole two 64. The ammonia gas and the formaldehyde gas are uniformly mixed to accelerate the reaction speed of the ammonia gas and the formaldehyde gas and improve the reaction efficiency.

[0029] Specifically, the discharge box 3 comprises a discharge port 31, an external box 32, a baffle 33 and a discharge pipe 34, the discharge port 31 is provided through the side wall of the reactor 1, the external box 32 is fixedly installed at one end of the discharge port 31, the lower end of the external box 32 is provided with a discharge port, and the baffle 33 is movably installed in the discharge port, the discharge pipe 34 is fixedly installed at one end of the external box 32, and a control valve is fixedly installed on the discharge pipe 34, and an inclined landslide 8 is provided in the reactor 1, and the inclined landslide 8 is arranged downwardly and downwardly towards the discharge port 31.

[0030] After the completion of the condensation reaction, the urotropine crystals obtained after the reaction are discharged through the discharge port 31, and the solution that is not completely reacted is discharged through the discharge pipe 34, the discharge pipe 34 is a elbow pipe, the pipe head is arranged downwardly, the opening and closing control is realized through the control valve, after the solution is discharged, the baffle 33 is pulled out to uniformly collect the urotropine crystals in the interior, the baffle 33 is controlled through an electromagnetic switch, the stability of the switch is improved, and the setting of the inclined landslide 8 avoids the internal production of material accumulation.

[0031] Specifically, the driving member 5 comprises a driving motor 51, a driving gear 52, a driven gear 53, a connecting shaft 54 and a protection box 55, the connecting shaft 54 is movably installed on the upper end of the reactor 1, the lower end of the connecting shaft 54 extends into the reactor 1 and is fixedly connected with the central column 41, the driven gear 53 is fixedly installed on the upper end of the connecting shaft 54, the driving motor 51 is fixedly installed on the upper end edge of the reactor 1 and the output end is fixedly installed with the driving gear 52, the driving gear 52 is engaged with the driven gear 53, and the protection box 55 is fixedly installed on the upper end of the reactor 1, and the driving motor 51, the driving gear 52, the driven gear 53 and the connecting shaft 54 are located in the protection box 55.

[0032] Through the setting of the driving motor 51, the driving gear 52, the driven gear 53, the connecting shaft 54 and the protection box 55, the driving motor 51 drives the driving gear 52, the driven gear 53, the connecting shaft 54 and the central column 41 to rotate in sequence, the driving motor 51, the driving gear 52, the driven gear 53 and the connecting shaft 54 are common technical means in the prior art, and will not be described in detail here, the protection box 55 plays a role in preventing dust and impurities, and is provided with an inspection door, so that periodic maintenance and repair can be realized.

[0033] Specifically, one side of the reactor 1 is provided with an auxiliary material inlet pipe 9 located above the discharge tank 3, the auxiliary material inlet pipe 9 comprises a sealing cover two 91 and a feeding bin 92, and a hollow connecting pipe three 93, the feeding bin 92 is arranged on one side of the reactor 1 through the hollow connecting pipe three 93, and the sealing cover two 91 is threadedly connected to the upper end of the feeding bin 92.

[0034] In the gas phase production of urotropine, the addition of appropriate catalysts can significantly improve the reaction efficiency. Commonly used catalysts include acid catalysts (such as sulfuric acid, hydrochloric acid), acidic salts (such as ammonium sulfate), metal ions (such as copper ions, zinc ions), organic acids (such as citric acid), and surfactants (such as sodium dodecyl sulfate). The selection of appropriate catalysts needs to consider factors such as reaction rate, yield, safety, environmental protection, and economy. According to the needs, appropriate addition is made, the sealing cover two 91 is opened, and the feeding bin 92 is conveniently added.

[0035] Specifically, the reactor 1 comprises a base 11, a kettle body 12, and a top cover 13, which are sequentially arranged from bottom to top, and are fixedly connected through fastening bolts. The front and rear sidewalls of the kettle body 12 are provided with transparent observation windows 121.

[0036] Through the arrangement of the base 11, the kettle body 12, and the top cover 13, the reactor 1 can be conveniently disassembled, and the inside of the kettle body 12 can be conveniently cleaned. The inside of the kettle body 12 is provided with temperature control equipment, which can control the temperature inside the reactor 1. Through the transparent observation windows 121, the inside of the kettle body 12 can be conveniently observed and cleaned, and the production process of urotropine can be monitored.

[0037] Specifically, the kettle body 12 is uniformly distributed with support legs 122 at the lower end, and the lower end of the support leg 122 is fixedly installed with a rubber shock pad 123.

[0038] The support legs 122 can support the kettle body 12. In the present application, the number of support legs 122 is three, and they are uniformly distributed in a circle to form a triangular stable support. The rubber shock pad 123 plays a supporting and damping role.

[0039] Working principle: in the application in the process of urotropin production, gas phase method is used to produce urotropin, the mother liquor inlet pipe 2 is connected with the external liquid supply end, the mother liquor such as water, ethanol, acetone and the like is input through the mother liquor inlet pipe 2, and the selection can be carried out according to the requirement, the gas inlet piece one 4 is the ammonia gas inlet, the gas inlet piece two 6 is the formaldehyde gas inlet, urotropin is generated through the condensation reaction of ammonia gas and formaldehyde gas, the ammonia gas and the formaldehyde gas are uniformly mixed through the setting of the gas inlet piece one 4 and the gas inlet piece two 6, the reaction is fully carried out, and in the reaction process, the center column 41 is driven to rotate by the driving piece 5, the reaction efficiency of the ammonia gas and the formaldehyde gas is improved.

[0040] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0041] Finally, it should be noted that: the above only the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or to the equivalent replacement of part of the technical features. Any modification, equivalent replacement, improvement and the like made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A reactor for the production of urotropine, comprising a reactor (1), characterized in that: The reactor (1) side wall is equipped with mother liquor inlet pipe (2) and discharge box (3) respectively, the mother liquor inlet pipe (2) and the discharge box (3) are located at the two sides of the reactor (1) respectively, the reactor (1) is equipped with air inlet part one (4), the air inlet part one (4) includes center column (41), ventilation channel one (42), hollow connecting pipe one (43), hollow column (44), air hole one (45) and air inlet pipe one (46), the center column (41) is movably installed in the middle position in the reactor (1), the hollow column (44) is uniformly arranged in the periphery of the center column (41), the air hole one (45) is uniformly distributed on the side wall of the hollow column (44), the ventilation channel one (42) is arranged in the center column (41), the hollow connecting pipe one (43) and the center column (41) are communicated through the ventilation channel one (42), the lower end of the center column (41) extends out of the lower end surface of the reactor (1) and movably installs the air inlet pipe one (46), the upper end of the reactor (1) is equipped with driving part (5) and the driving part (5) controls the rotation of the center column (41), the reactor (1) is equipped with air inlet part two (6) outside, the air inlet part two (6) is arranged at the bottom of the reactor (1), the upper end of the reactor (1) is fixedly installed with exhaust pipe (7) and the exhaust pipe (7) is threadedly connected with sealing cover one (71).

2. A reactor for the production of urotropine according to claim 1, characterized in that: The air inlet part two (6) includes arc air inlet ring (61), air inlet channel two (62), hollow connecting pipe two (63), air hole two (64) and air inlet pipe two (65), the arc air inlet ring (61) is sleeved outside the reactor (1) through the hollow connecting pipe two (63), the hollow connecting pipe two (63) is evenly distributed in the form of a fan between the reactor (1) and the arc air inlet ring (61), the air hole two (64) is throughly arranged in the side wall of the reactor (1), the air hole two (64) and the hollow connecting pipe two (63) are one-to-one correspondence, the hollow connecting pipe two (63) is communicated with the inside of the reactor (1) through the air hole two (64), the air inlet pipe two (65) is fixedly installed on one side of the arc air inlet ring (61), the air inlet channel two (62) is arranged in the arc air inlet ring (61), the hollow connecting pipe two (63) and the air inlet pipe two (65) are communicated through the air inlet channel two (62).

3. A reactor for the production of urotropine according to claim 1, characterized in that: The discharge box (3) comprises a discharge port (31), an external box (32), a baffle (33) and a discharge pipe (34), the discharge port (31) is provided through the side wall of the reactor (1), the external box (32) is fixedly installed at one end of the discharge port (31), the lower end of the external box (32) is provided with a discharge port, and the baffle (33) is movably installed in the discharge port, the discharge pipe (34) is fixedly installed at one end of the external box (32), a control valve is fixedly installed on the discharge pipe (34), and the reactor (1) is provided with an inclined landslide (8), which is arranged inclined downward towards the discharge port (31).

4. The reactor for production of urotropin according to claim 1, characterized in that: The driving member (5) comprises a driving motor (51), a driving gear (52), a driven gear (53), a connecting shaft (54) and a protection box (55), the connecting shaft (54) is movably installed on the upper end of the reactor (1), the lower end of the connecting shaft (54) extends into the reactor (1) and is fixedly connected with the center column (41), the driven gear (53) is fixedly installed on the upper end of the connecting shaft (54), the driving motor (51) is fixedly installed on the upper end edge of the reactor (1), the output end is fixedly installed with the driving gear (52), the driving gear (52) is engaged with the driven gear (53), and the protection box (55) is fixedly installed on the upper end of the reactor (1). The driving motor (51), the driving gear (52), the driven gear (53) and the connecting shaft (54) are located in the protection box (55).

5. The reactor for production of urotropin according to claim 1, characterized in that: One side of the reactor (1) is provided with an auxiliary material inlet pipe (9), the auxiliary material inlet pipe (9) is located above the discharge box (3), the auxiliary material inlet pipe (9) comprises a sealing cover two (91), a feeding bin (92) and a hollow connecting pipe three (93), the feeding bin (92) is arranged on one side of the reactor (1) through the hollow connecting pipe three (93), and the sealing cover two (91) is threadedly connected to the upper end of the feeding bin (92).

6. The reactor for production of urotropin according to claim 1, characterized in that: The reactor (1) comprises a base (11), a kettle body (12) and a top cover (13), the base (11), the kettle body (12) and the top cover (13) are sequentially arranged from bottom to top, the base (11), the kettle body (12) and the top cover (13) are fixedly connected through fastening bolts, and the front and rear side walls of the kettle body (12) are provided with transparent observation windows (121).

7. A reactor for the production of urotropine according to claim 6, characterized in that: The kettle body (12) is uniformly distributed with support legs (122) at the lower end, and rubber shock pads (123) are fixedly installed at the lower end of the support legs (122).

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