Production device for preparing potassium tert-butoxide

Abstract

The utility model discloses a production device for preparing potassium tert-butoxide, which relates to the technical field of preparation of potassium tert-butoxide and comprises a bearing plate, a shell arranged in the bearing plate, a cooling tank arranged in the shell, a connecting cylinder connected to the top end of the cooling tank, a cooling mechanism arranged in the connecting cylinder and a reaction tank connected to the top end of the connecting cylinder. A reaction mechanism is arranged in the reaction tank; the cooling mechanism comprises a liquid injection pipe and a liquid conveying pipe, the liquid conveying pipe is connected between the reaction tank and the cooling tank, and the liquid injection pipe is arranged at the top of one side of the connecting cylinder; the cooling device has the beneficial effects that a reacted solution is guided into the cooling tank through the matching of the liquid conveying pipe and the electromagnetic valve, direct cooling in the reaction tank is avoided, cold water is added into the connecting cylinder through the matching of the first switch valve and the liquid injection pipe, cooling is carried out in the solution circulation process, the cooling speed is increased, and the cooling effect is improved. And through cooperation of the fan and the cold air pipe, the solution is further cooled, so that the cooling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a production device, in particular to a production device for preparing potassium tert-butoxide, belonging to the technical field of potassium tert-butoxide preparation. Background Art

[0002] Potassium tert-butoxide is an important organic base, which is widely used in organic synthesis in chemical industry, medicine, pesticide, etc., such as transesterification, condensation, rearrangement, polymerization, ring opening and the production of heavy metal orthoesters. Potassium tert-butoxide is widely used in chemical industry, medicine, pesticide and other industries. During preparation, it is necessary to react metallic potassium with tert-butanol at a certain temperature, and the liquid after the reaction is cooled and discharged.

[0003] Among them, the "A Potassium Tert-Butoxide Synthesis Device" disclosed in the application number "CN202122342966.1" is also an increasingly mature technology, including a connected reaction distillation tower, a liquid potassium methanol storage tank and a tert-butanol storage tank for feeding the reaction distillation tower; the top discharge port of the reaction distillation tower is connected to the secondary distillation tower via a first condenser, and the bottom discharge port of the reaction distillation tower is connected to the drying tank via a receiving tank, and the top discharge port of the drying tank is connected to the tert-butanol storage tank via a cooling tower, and the bottom discharge port of the drying tank is connected to the feed port of the potassium tert-butoxide packaging tank via a pipeline; the top discharge port of the secondary distillation tower is connected to the methanol storage tank via a second condenser, and the lower discharge port of the secondary distillation tower is connected to the tert-butanol storage tank via a reboiler. The utility model can complete the reaction at the moment of feeding, and the generated methanol is promptly taken out of the reaction distillation tower by the tert-butanol fed in excess, thereby realizing continuous feeding, continuous reaction, and continuous distillation, reducing the loss caused by frequent opening of equipment, improving production efficiency, and reducing production costs. After further retrieval, the "a production device for preparing potassium tert-butoxide" disclosed in the application number "CN202122517529.9" includes a reactor and a storage box, the top of the reactor is fixedly connected with a sealing plate by screws, the top of the sealing plate is provided with a feeding hole, and a fixed pipe is fixedly connected inside the feeding hole. A fixing plate is fixedly connected to the top of the fixing tube, a first threaded hole is longitudinally penetrated at the top of the fixing plate, the bottom of the storage box is screwed inside the first threaded hole, a first sealing gasket is fixedly connected to the bottom of the storage box, the bottom end of the first sealing gasket contacts with the top of the fixing plate, a sealing plug is provided at the bottom of the storage box, the lower half of the sealing plug is provided with a conical structure, a sealing sleeve is provided on the outer sleeve of the sealing plug, a connecting rod is rotatably connected to the top of the sealing plug, and an external thread is provided on the outer upper side of the connecting rod; it can prevent the metal potassium flakes from contacting with the air during the falling process, prevent the metal potassium flakes from being oxidized and wasted, and ensure the quality and quantity of potassium tert-butoxide production.

[0004] However, the above method still has the following defects in actual use: the solution after the reaction needs to be cooled and then discharged, and direct cooling in the reaction tank consumes the heat of the reaction tank, and the cooling efficiency is low, resulting in low preparation efficiency. Therefore, the utility model provides a production device for preparing potassium tert-butoxide. Utility Model Content

[0005] The utility model aims to provide a production device for preparing potassium tert-butoxide, so as to solve the problem of low cooling efficiency caused by direct cooling in a reaction tank proposed in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a production device for preparing potassium tert-butoxide, comprising a carrying plate, a supporting foot is provided at the bottom end of the carrying plate, a shell is provided inside the carrying plate, a cooling tank is provided inside the shell, a connecting cylinder is connected to the top of the cooling tank, a cooling mechanism is provided inside the connecting cylinder, a reaction tank is connected to the top of the connecting cylinder, and a reaction mechanism is provided inside the reaction tank; the reaction mechanism comprises a stirring shaft and a mounting frame, the top of the stirring shaft is rotatably connected to the middle part of the top of the reaction tank through a bearing, the outer wall of the stirring shaft is connected to a stirring plate, and the stirring A circulation hole is opened on the side of the mixing plate, the mounting frame is connected to the middle of the top of the reaction tank, a motor is arranged inside the mounting frame, and the transmission shaft of the motor is connected to the top of the stirring shaft; the cooling mechanism includes an injection pipe, a semiconductor refrigeration sheet and an infusion pipe, the infusion pipe is connected between the reaction tank and the cooling tank, a solenoid valve is arranged on the top of one side of the connecting tube, a first switch valve is arranged in the middle of the injection pipe, the semiconductor refrigeration sheet is arranged on the top of the other side of the connecting tube, and the cooling surface of the semiconductor refrigeration sheet is located inside the connecting tube.

[0007] As a preferred technical solution of the utility model, an insulation shell is provided on the outside of the reaction tank, a heating rod is provided on the inside of the insulation shell, a first temperature controller is provided on the inner wall of the top of the reaction tank, and the heating rod is electrically connected to the power supply through the first temperature controller.

[0008] As a preferred technical solution of the utility model, the top of the connecting tube is connected to a heat insulation plate, and the infusion tube passes through the heat insulation plate.

[0009] As a preferred technical solution of the utility model, a mounting plate is connected to the top of one side of the shell, a fan is provided at the top of the mounting plate, an air outlet of the fan is connected to a cold air duct, one end of the cold air duct extends to the interior of the shell, a vent is provided on one side of the top of the shell, a second temperature controller is provided on the inner wall of the top of the cooling tank, and the fan is electrically connected to the power supply through the second temperature controller.

[0010] As an optimal technical solution of the utility model, one side of the top of the reaction tank is connected to a liquid inlet pipe, the top of the liquid inlet pipe is threadedly connected to a sealing cover, the other side of the top of the reaction tank is connected to a feed pipe, and the top of the feed pipe is connected to a sealing plate through a hinge.

[0011] As a preferred technical solution of the utility model, the inner wall of the bottom end of the reaction tank is connected with a first liquid guide plate.

[0012] As a preferred technical solution of the utility model, the inner wall of the bottom end of the cooling tank is connected to a second liquid guide plate, the middle of the bottom end of the cooling tank is connected to a liquid outlet pipe, and the middle of the liquid outlet pipe is provided with a second switch valve.

[0013] Compared with the related art, the production device for preparing potassium tert-butoxide provided by the utility model has the following beneficial effects:

[0014] 1. Through the cooperation of the infusion tube and the solenoid valve, the reacted solution is introduced into the cooling tank to avoid direct cooling in the reaction tank. Through the cooperation of the first switch valve and the injection tube, cold water is added to the connecting cylinder to cool the solution during its circulation to speed up the cooling speed. Through the cooperation of the fan and the cold air pipe, the solution is further cooled, thereby improving the cooling efficiency;

[0015] 2. The tert-butyl alcohol and the metallic potassium are uniformly mixed by the cooperation of the stirring shaft and the stirring plate to make them fully react. The reaction tank is kept at the reaction temperature by the cooperation of the heating rod and the first temperature controller to ensure the normal reaction of the reactants. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0019] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at B.

[0020] In the figure: 1. bearing plate; 2. support foot; 3. shell; 4. connecting tube; 5. reaction mechanism; 6. cooling mechanism; 7. reaction tank; 8. cooling tank; 9. liquid inlet pipe; 10. sealing cover; 11. feeding pipe; 12. sealing plate; 13. first liquid guide plate; 14. second liquid guide plate; 15. liquid outlet pipe; 16. second switch valve; 501. stirring shaft; 502. stirring plate; 503. flow hole; 504. mounting frame; 505. motor; 506. insulation shell; 507. heating rod; 508. first temperature controller; 601. liquid injection pipe; 602. semiconductor refrigeration plate; 603. infusion tube; 604. solenoid valve; 605. first switch valve; 606. insulation plate; 607. mounting plate; 608. fan; 609. cold air pipe; 610. vent; 611. second temperature controller. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1:

[0023] See also Figure 1-4 The utility model provides a production device for preparing potassium tert-butoxide, comprising a carrying plate 1, a supporting leg 2 is fixedly provided at the bottom end of the carrying plate 1, four supporting legs 2 are provided and are equidistantly provided at the bottom end of the carrying plate 1, a shell 3 is fixedly provided inside the carrying plate 1, a cooling tank 8 is fixedly provided inside the shell 3, a connecting tube 4 is fixedly connected to the top end of the cooling tank 8, a cooling mechanism 6 is provided inside the connecting tube 4, a reaction tank 7 is fixedly connected to the top end of the connecting tube 4, and a reaction mechanism 5 is provided inside the reaction tank 7;

[0024] The reaction mechanism 5 includes a stirring shaft 501 and a mounting frame 504. The top of the stirring shaft 501 is rotatably connected to the middle of the top of the reaction tank 7 through a bearing. The outer wall of the stirring shaft 501 is fixedly connected to a stirring plate 502. A plurality of stirring plates 502 are provided and are equidistantly arranged on the outer wall of the stirring shaft 501. A flow hole 503 is opened on the side of the stirring plate 502. A plurality of flow holes 503 are provided and are equidistantly arranged on the side of the stirring plate 502. The mounting frame 504 is fixedly connected to the middle of the top of the reaction tank 7. A motor 505 is fixedly provided inside the mounting frame 504. The transmission shaft of the motor 505 is fixedly connected to the top of the stirring shaft 501.

[0025] A heat preservation shell 506 is fixedly provided on the outside of the reaction tank 7, a heating rod 507 is fixedly provided inside the heat preservation shell 506, a plurality of heating rods 507 are provided, and are arranged inside the heat preservation shell 506 at equal distances, a first temperature controller 508 is fixedly provided on the inner wall at the top of the reaction tank 7, the heating rod 507 is electrically connected to the power supply through the first temperature controller 508, the first temperature controller 508 monitors the temperature inside the reaction tank 7, and the heating rod 507 heats the temperature inside the reaction tank 7 to provide an accurate reaction temperature for the preparation process;

[0026] A liquid inlet pipe 9 is fixedly connected to one side of the top of the reaction tank 7, and a sealing cover 10 is threadedly connected to the top of the liquid inlet pipe 9. A feed pipe 11 is fixedly connected to the other side of the top of the reaction tank 7, and a sealing plate 12 is connected to the top of the feed pipe 11 through a hinge. Reactants are added into the reaction tank 7 through the liquid inlet pipe 9 and the feed pipe 11, and the sealing cover 10 and the sealing plate 12 prevent foreign impurities from entering the reaction tank 7;

[0027] The inner wall at the bottom of the reaction tank 7 is fixedly connected with a first liquid guide plate 13, through which all the solution in the reaction tank 7 is discharged;

[0028] Specifically, firstly, the tert-butyl alcohol solution is introduced into the liquid inlet pipe 9, and the metallic potassium is placed into the feed pipe 11, and then the sealing cover 10 and the sealing plate 12 are covered to prevent foreign matter from entering the reaction tank 7, and then the temperature detection range of the first temperature controller 508 of model REX-C100 is set. When the detected temperature is low, the first temperature controller 508 controls the heating rod 507 to heat the inside of the reaction tank 7. When the detected temperature is high, the heating rod 507 is turned off, and then the motor 505 is started to rotate the stirring shaft 501, drive the stirring plate 502 to rotate, so that the reactants are evenly mixed, thereby fully reacting.

[0029] Embodiment 2:

[0030] The cooling mechanism 6 includes a liquid injection pipe 601, a semiconductor cooling sheet 602 and a liquid infusion pipe 603. The liquid infusion pipe 603 is fixedly connected between the reaction tank 7 and the cooling tank 8. A solenoid valve 604 is fixedly arranged on the top of the liquid infusion pipe 603. The liquid injection pipe 601 is fixedly arranged on the top of one side of the connecting tube 4. A first switch valve 605 is fixedly arranged in the middle of the liquid injection pipe 601. The semiconductor cooling sheet 602 is fixedly arranged on the top of the other side of the connecting tube 4. The cooling surface of the semiconductor cooling sheet 602 is located inside the connecting tube 4.

[0031] The top of the connecting tube 4 is fixedly connected with a heat-insulating plate 606, and the infusion tube 603 passes through the heat-insulating plate 606, and the heat is isolated by the heat-insulating plate 606 to reduce heat consumption;

[0032] A mounting plate 607 is fixedly connected to the top of one side of the shell 3, a fan 608 is fixedly provided on the top of the mounting plate 607, a cold air duct 609 is fixedly connected to the air outlet of the fan 608, one end of the cold air duct 609 extends to the inside of the shell 3, a vent 610 is provided on one side of the top of the shell 3, a plurality of vents 610 are provided, and they are equidistantly arranged on one side of the top of the shell 3, a second temperature controller 611 is fixedly provided on the inner wall of the top of the cooling tank 8, the fan 608 is electrically connected to the power supply through the second temperature controller 611, cold air is introduced into the shell 3 through the fan 608, and the heat of the solution is taken out from the vent 610, and the second temperature controller 611 monitors the temperature inside the cooling tank 8;

[0033] A second liquid guide plate 14 is fixedly connected to the inner wall of the bottom end of the cooling tank 8, a liquid outlet pipe 15 is fixedly connected to the middle of the bottom end of the cooling tank 8, a second switch valve 16 is fixedly provided in the middle of the liquid outlet pipe 15, and the second liquid guide plate 14 facilitates the complete discharge of the solution;

[0034] Specifically, first open the first switch valve 605, and introduce cold water into the connecting tube 4 through the injection tube 601, then open the solenoid valve 604, and introduce the reacted solution into the cooling tank 8 through the infusion tube 603. During the circulation of the solution, the cold water absorbs the heat of the solution, and under the action of the semiconductor refrigeration sheet 602, the refrigeration effect is guaranteed. Then, the temperature detection range of the second temperature controller 611 with model REX-C100 is set. When the detected temperature is high, start the fan 608, and introduce cold air into the outer shell 3 to bring the heat out from the vent 610. When the detected temperature is room temperature, turn off the fan 608 to quickly cool the reaction solution.

[0035] When in use, first set the temperature detection range of the first temperature controller 508 and the second temperature controller 611, both of which are REX-C100 models, and then introduce the tert-butyl alcohol solution into the liquid inlet pipe 9, and put the metallic potassium into the feed pipe 11, and then cover the sealing cover 10 and the sealing plate 12 to prevent foreign matter from entering the reaction tank 7, and then start the motor 505 to rotate the stirring shaft 501, drive the stirring plate 502 to rotate, so that the reactants are evenly mixed, so as to fully react. When the temperature in the reaction tank 7 is lower than the detection range of the first temperature controller 508, the first temperature controller 508 controls the heating rod 507 to heat the inside of the reaction tank 7. When the detected temperature is high, the heating rod 507 is turned off to provide suitable temperature conditions for the preparation process;

[0036] Then open the first switch valve 605, and introduce cold water into the connecting tube 4 through the injection tube 601, and then open the solenoid valve 604, and let the reacted solution enter the cooling tank 8 through the infusion tube 603. During the circulation of the solution, the cold water absorbs the heat of the solution, and under the action of the semiconductor refrigeration sheet 602, the refrigeration effect is guaranteed. The solution enters the cooling tank 8. When the temperature in the cooling tank 8 is higher than the detection temperature of the second temperature controller 611, start the fan 608, and introduce cold air into the outer shell 3 to bring the heat out from the vent 610 to further cool the solution. When the detected temperature is room temperature, turn off the fan 608, and finally open the second switch valve 16 to discharge the cooled solution.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production device for preparing potassium tert-butoxide, comprising a supporting plate (1), characterized in that: A support foot (2) is provided at the bottom end of the carrier plate (1), a shell (3) is provided inside the carrier plate (1), a cooling tank (8) is provided inside the shell (3), a connecting tube (4) is connected to the top end of the cooling tank (8), a cooling mechanism (6) is provided inside the connecting tube (4), a reaction tank (7) is connected to the top end of the connecting tube (4), and a reaction mechanism (5) is provided inside the reaction tank (7); The reaction mechanism (5) comprises a stirring shaft (501) and a mounting frame (504), the top of the stirring shaft (501) is rotatably connected to the middle of the top of the reaction tank (7) via a bearing, the outer wall of the stirring shaft (501) is connected to a stirring plate (502), the side of the stirring plate (502) is provided with a flow hole (503), the mounting frame (504) is connected to the middle of the top of the reaction tank (7), a motor (505) is provided inside the mounting frame (504), and the transmission shaft of the motor (505) is connected to the top of the stirring shaft (501); The cooling mechanism (6) comprises an injection pipe (601), a semiconductor cooling sheet (602) and a liquid infusion pipe (603); the liquid infusion pipe (603) is connected between the reaction tank (7) and the cooling tank (8); a solenoid valve (604) is provided at the top of the liquid infusion pipe (603); the injection pipe (601) is arranged at the top of one side of the connecting tube (4); a first switch valve (605) is provided in the middle of the injection pipe (601); the semiconductor cooling sheet (602) is arranged at the top of the other side of the connecting tube (4); and the cooling surface of the semiconductor cooling sheet (602) is located inside the connecting tube (4).

2. A production device for preparing potassium tert-butoxide according to claim 1, characterized in that: The outside of the reaction tank (7) is provided with a heat-insulating shell (506), the inside of the heat-insulating shell (506) is provided with a heating rod (507), the inner wall of the top end of the reaction tank (7) is provided with a first temperature controller (508), and the heating rod (507) is electrically connected to a power source via the first temperature controller (508).

3. A production device for preparing potassium tert-butoxide according to claim 1, characterized in that: The top of the connecting tube (4) is connected to a heat-insulating plate (606), and the infusion tube (603) passes through the heat-insulating plate (606).

4. A production device for preparing potassium tert-butoxide according to claim 1, characterized in that: A mounting plate (607) is connected to the top of one side of the outer shell (3), a fan (608) is provided at the top of the mounting plate (607), an air outlet of the fan (608) is connected to a cold air duct (609), one end of the cold air duct (609) extends to the interior of the outer shell (3), a vent (610) is provided on one side of the top of the outer shell (3), a second temperature controller (611) is provided on the inner wall of the top of the cooling tank (8), and the fan (608) is electrically connected to a power supply via the second temperature controller (611).

5. A production device for preparing potassium tert-butoxide according to claim 1, characterized in that: One side of the top of the reaction tank (7) is connected to a liquid inlet pipe (9), the top of the liquid inlet pipe (9) is threadedly connected to a sealing cover (10), and the other side of the top of the reaction tank (7) is connected to a feed pipe (11), the top of the feed pipe (11) is hingedly connected to a sealing plate (12).

6. A production device for preparing potassium tert-butoxide according to claim 1, characterized in that: The inner wall of the bottom end of the reaction tank (7) is connected to a first liquid guide plate (13).

7. A production device for preparing potassium tert-butoxide according to claim 1, characterized in that: The inner wall of the bottom end of the cooling tank (8) is connected to a second liquid guide plate (14), the middle of the bottom end of the cooling tank (8) is connected to a liquid outlet pipe (15), and the middle of the liquid outlet pipe (15) is provided with a second switch valve (16).

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