Pre-reaction kettle

Abstract

The utility model discloses a pre-reaction kettle which comprises a pre-reaction kettle body, a cold water circulating tank is arranged at the top of the inner wall of the pre-reaction kettle body, an upper cooling pipe and a lower cooling pipe are sequentially arranged on the bottom surface of the cold water circulating tank, a stirring shaft is arranged in the center of the interior of the pre-reaction kettle body, a paddle is arranged above the stirring shaft, and a water outlet is formed in the middle of the stirring shaft. A hot water collecting tank is arranged below the outer part of the pre-reaction kettle body, and a cold water inlet is formed in one side of the outer part of the hot water collecting tank. According to the pre-reaction kettle, the upper cooling pipe and the lower cooling pipe are arranged inside the pre-reaction kettle body, so that cooling liquid can be circularly conveyed from inside to outside, and when the internal temperature is too high, the cooling liquid can be quickly circulated into the pre-reaction kettle body, raw materials inside the pre-reaction kettle body are cooled firstly, and the cooling effect is good; and then external raw materials are cooled, and the cooling speed is increased, so that the internal pressure is reduced, and explosion is avoided.

Description

Technical Field

[0001] The utility model relates to the field related to phosphorus pentafluoride processing, in particular to a pre-reaction kettle. Background Art

[0002] Phosphorus pentafluoride is a phosphorus-halogen compound. The oxidation number of the phosphorus atom is +5. It contains a three-center four-electron bond. Phosphorus pentafluoride is a colorless, foul-smelling gas at room temperature and pressure. It is highly irritating to the skin, eyes, and mucous membranes. It is a highly active compound and will hydrolyze violently in humid air to produce toxic and corrosive white smoke of hydrogen fluoride. Phosphorus pentafluoride is used as a catalyst for polymerization reactions.

[0003] The prior art still has certain deficiencies in the pre-reactor used in phosphorus pentafluoride processing. Since phosphorus pentafluoride releases heat during the reaction, excessive heat can easily cause internal overpressure. In severe cases, it can cause explosion, which is dangerous. The traditional method is usually to install a cooling tank on the outside of the tank body, and the coolant can only circulate in the tank body, resulting in a slow cooling speed and poor cooling effect. Utility Model Content

[0004] The utility model aims to provide a pre-reactor to solve the problem in the background technology that phosphorus pentafluoride releases heat during the reaction, the heat is too high, which easily causes internal overpressure, and in severe cases, explosion, which is dangerous. The traditional method is usually to install a cooling tank on the outside of the tank body, and the coolant can only circulate in the tank body, the cooling speed is slow, and the cooling effect is poor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pre-reactor, comprising a pre-reactor body, a cold water circulation groove is provided at the top position of the inner wall of the pre-reactor body, an upper cooling pipe and a lower cooling pipe are provided in sequence on the bottom surface of the cold water circulation groove, a stirring shaft is provided at the center position inside the pre-reactor body, a paddle is provided above the stirring shaft, a hot water collection groove is provided at the lower position outside the pre-reactor body, a cold water inlet is provided on one side of the outside of the hot water collection groove, a hot water outlet is provided on the other side of the bottom end of the hot water collection groove, a discharge port is provided at the center position of the bottom end of the pre-reactor body, a sealing cover is provided at the top end of the pre-reactor body, a driving motor is provided at the center position of the top of the sealing cover, a support frame is provided at the lower part of the outside of the pre-reactor body, and the bottom end of the support frame is connected to a fixed bottom plate.

[0006] In a further embodiment, the positions of the upper cooling tube and the lower cooling tube are arranged in a staggered structure, and the height of the upper cooling tube is half of the height of the lower cooling tube.

[0007] In a further embodiment, the positions of the blades and the upper cooling tubes and the lower cooling tubes are arranged in a staggered structure, and the blades are arranged in four rows, and each row is provided with eight blades.

[0008] In a further embodiment, the top ends of the upper cooling tube and the lower cooling tube are connected to the cold water circulation tank by welding, the lower ends of the upper cooling tube and the lower cooling tube are connected to the interior of the hot water collection tank, and the shapes of the upper cooling tube and the lower cooling tube are both set to a U-shaped structure.

[0009] In a further embodiment, the lower end of the stirring shaft is connected to the interior of the pre-reactor body via a balancing tripod, and the stirring shaft and the balancing tripod are rotatably connected via a coordinated rotating sleeve.

[0010] In a further embodiment, a water supply port, a water inlet and a feed port are sequentially arranged at the outer ring position of the top of the sealing cover, an annular spray pipe is arranged inside the sealing cover, a spray hole is arranged on the bottom surface of the annular spray pipe, and the annular spray pipe is connected to the water inlet by welding.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, an upper cooling pipe and a lower cooling pipe are arranged inside the pre-reactor body. The upper cooling pipe and the lower cooling pipe are arranged inside, so that the coolant can be circulated and transported from the inside to the outside. When the internal temperature is too high, the coolant can be quickly circulated to the inside, and the internal raw materials are first cooled and cooled, and then the external raw materials are cooled and cooled, so as to speed up the cooling speed, thereby reducing the internal pressure and avoiding explosion. The upper cooling pipe and the lower cooling pipe are uniformly provided with coolant by a cold water circulation tank. The cold water circulation tank can play two roles: one is to provide coolant to the upper cooling pipe and the lower cooling pipe, and the other is to cool the upper half of the tank body. The cooling pipe is arranged in two upper and lower parts, so that raw materials at different heights can be cooled and cooled, the cooling area range is expanded, and the cooling effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the internal structure of a pre-reactor of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the stirring shaft of the utility model;

[0015] Figure 3 It is a top view of the pre-reaction kettle body of the utility model;

[0016] Figure 4 It is a side view of the cold water circulation tank of the utility model;

[0017] Figure 5 A bottom view of the sealing cover of the utility model;

[0018] Figure 6 This is a front view of a pre-reactor of the utility model.

[0019] In the figure: 1. driving motor; 2. sealing cover; 3. water supply port; 4. water inlet; 5. feed port; 6. pre-reactor body; 7. cold water circulation tank; 8. upper cooling pipe; 9. lower cooling pipe; 10. hot water collecting tank; 11. cold water inlet; 12. discharge port; 13. hot water outlet; 14. support frame; 15. fixed bottom plate; 16. stirring shaft; 17. paddle; 18. balancing tripod; 19. coordination sleeve; 20. annular spray pipe; 21. spray hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-6 The utility model provides an embodiment: a pre-reactor, comprising a pre-reactor body 6, a cold water circulation groove 7 is provided at the top position of the inner wall of the pre-reactor body 6, an upper cooling pipe 8 and a lower cooling pipe 9 are provided in sequence on the bottom surface of the cold water circulation groove 7, a stirring shaft 16 is provided at the center position inside the pre-reactor body 6, a paddle 17 is provided above the stirring shaft 16, a hot water collecting groove 10 is provided at the lower position outside the pre-reactor body 6, a cold water inlet 11 is provided on one side of the outside of the hot water collecting groove 10, a hot water outlet 13 is provided on the other side of the bottom end of the hot water collecting groove 10, a discharge port 12 is provided at the center position of the bottom end of the pre-reactor body 6, a sealing cover 2 is provided at the top end of the pre-reactor body 6, a driving motor 1 is provided at the center position of the top of the sealing cover 2, a support frame 14 is provided at the lower part of the outside of the pre-reactor body 6, and the bottom end of the support frame 14 is connected to the fixed bottom plate 15.

[0022] The cold water circulation tank 7 is used to collect the cold and hot liquids and evenly distribute them to the upper cooling tube 8 and the lower cooling tube 9. The upper cooling tube 8 and the lower cooling tube 9 are used for circulating the coolant to cool the inside. The stirring shaft 16 is used to stir and mix the raw materials. The paddle 17 increases the stirring force and stirring area to increase the mixing speed. The hot water collection tank 10 is used to collect the coolant discharged from the upper cooling tube 8 and the lower cooling tube 9. The sealing cover 2 is used to seal the top of the pre-reactor body 6. The support frame 14 is used to support the pre-reactor body 6 firmly.

[0023] The positions of the upper cooling pipe 8 and the lower cooling pipe 9 are set to a staggered structure, and the height of the upper cooling pipe 8 is half of the height of the lower cooling pipe 9. The staggered structure allows the upper cooling pipe 8 and the lower cooling pipe 9 to be installed in different positions without hindering the operation of the stirring shaft 16. The top ends of the upper cooling pipe 8 and the lower cooling pipe 9 are connected to the cold water circulation tank 7 by welding, and the lower ends of the upper cooling pipe 8 and the lower cooling pipe 9 are connected to the interior of the hot water collection tank 10, and the shapes of the upper cooling pipe 8 and the lower cooling pipe 9 are set to a U-shaped structure. The welding connection is used to increase the firmness and sealing of the top ends of the upper cooling pipe 8 and the lower cooling pipe 9 and the cold water circulation tank 7.

[0024] The positions of the blades 17 and the upper cooling tube 8 and the lower cooling tube 9 are set in a staggered structure, and the blades 17 are arranged in four rows, and each row is provided with eight blades 17. The staggered structure can prevent the blades 17 from colliding with the upper cooling tube 8 and the lower cooling tube 9.

[0025] The lower end of the stirring shaft 16 is connected to the interior of the pre-reactor body 6 through a balancing tripod 18, and the stirring shaft 16 and the balancing tripod 18 are rotatably connected through a coordinated rotating sleeve 19. The balancing tripod 18 is used to support the lower end of the stirring shaft 16 firmly, so that it rotates more smoothly.

[0026] The outer ring position of the top of the sealing cover 2 is provided with a water supply port 3, a water inlet 4 and a feed port 5 in sequence, and an annular spray pipe 20 is provided inside the sealing cover 2, and a spray hole 21 is provided on the bottom surface of the annular spray pipe 20, and the annular spray pipe 20 is connected to the water inlet 4 by welding. The annular spray pipe 20 is used to expand the spraying area, so that the cleaning liquid is evenly sprayed inside, which makes it easier to clean the inside.

[0027] Working principle: When in use, add the raw materials from the feed port 5, and then add water from the water supply port 3. The driving motor 1 converts electrical energy into mechanical energy to drive the stirring shaft 16, so that the paddle 17 rotates to stir the internal raw materials and make them react. When the internal temperature is high, the coolant is added to the cold water circulation tank 7 through the cold water inlet 11, and the cold water circulation tank 7 is evenly distributed to the upper cooling pipe 8 and the lower cooling pipe 9, so that the coolant flows from the inside to the outside to cool the inside. The coolant is collected by the hot water collection tank 10, and the outside is also cooled. It is discharged to the required device through the hot water outlet 13, and the processed raw materials are discharged through the discharge port 12. If internal cleaning is required, the cleaning liquid is added to the annular spray pipe 20 through the water inlet 4, and sprayed evenly on the inside through the spray hole 21, and then the inside is stirred and cleaned by the stirring shaft 16.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A pre-reactor, comprising a pre-reactor body (6), characterized in that: A cold water circulation groove (7) is provided at the top position of the inner wall of the pre-reactor body (6), and an upper cooling pipe (8) and a lower cooling pipe (9) are provided in sequence on the bottom surface of the cold water circulation groove (7). A stirring shaft (16) is provided at the center position inside the pre-reactor body (6), and a paddle (17) is provided above the stirring shaft (16). A hot water collection groove (10) is provided at the lower position outside the pre-reactor body (6), a cold water inlet (11) is provided on one side of the outside of the hot water collection groove (10), and a hot water outlet (13) is provided on the other side of the bottom end of the hot water collection groove (10). A discharge port (12) is provided at the center position of the bottom end of the pre-reactor body (6), a sealing cover (2) is provided at the top end of the pre-reactor body (6), and a driving motor (1) is provided at the center position of the top of the sealing cover (2). A support frame (14) is provided at the lower position outside the pre-reactor body (6), and the bottom end of the support frame (14) is connected to a fixed bottom plate (15).

2. A pre-reactor according to claim 1, characterized in that: The positions of the upper cooling tube (8) and the lower cooling tube (9) are arranged in a staggered structure, and the height of the upper cooling tube (8) is half the height of the lower cooling tube (9).

3. A pre-reactor according to claim 1, characterized in that: The positions of the paddles (17) and the upper cooling tube (8) and the lower cooling tube (9) are arranged in a staggered structure; the paddles (17) are arranged in four rows in total, and each row is provided with eight paddles (17).

4. A pre-reactor according to claim 1, characterized in that: The top ends of the upper cooling pipe (8) and the lower cooling pipe (9) are connected to the cold water circulation tank (7) by welding, the lower ends of the upper cooling pipe (8) and the lower cooling pipe (9) are connected to the inside of the hot water collection tank (10), and the outer shapes of the upper cooling pipe (8) and the lower cooling pipe (9) are both set to be U-shaped structures.

5. A pre-reactor according to claim 1, characterized in that: The lower end of the stirring shaft (16) is connected to the interior of the pre-reactor body (6) via a balancing tripod (18), and the stirring shaft (16) and the balancing tripod (18) are rotatably connected via a coordinated rotating sleeve (19).

6. A pre-reactor according to claim 1, characterized in that: A water supply port (3), a water inlet (4) and a feed port (5) are sequentially arranged at the outer ring position of the top of the sealing cover (2); an annular spray pipe (20) is arranged inside the sealing cover (2); a spray hole (21) is arranged on the bottom surface of the annular spray pipe (20); and the annular spray pipe (20) is connected to the water inlet (4) by welding.

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