Raw material gasifying and mixing device for preparing aminocapronitrile by pressurizing method

Abstract

The raw material gasifying and mixing device comprises a reaction kettle, a rotating rod is rotatably mounted in the reaction kettle, two groups of fixed rods are symmetrically and fixedly connected to the outer wall of the rotating rod, one ends of the two groups of fixed rods are movably connected with movable rods in an inserted mode, and the other ends of the two groups of fixed rods are movably connected with the movable rods in an inserted mode. Two groups of movable rods are arranged in the reaction kettle, one ends of the two groups of movable rods are fixedly connected with a cleaning plate, and a water supply assembly for supplying water to the reaction kettle is arranged in the reaction kettle. According to the reaction kettle cleaning device, the rotating rod drives the two fixed rods to rotate, the two fixed rods drive the movable rods connected with the fixed rods to rotate correspondingly, then the cleaning plate rotates, the inner wall of the reaction kettle is cleaned through the cleaning plate, a top cover of the reaction kettle does not need to be taken down for cleaning, the operation is simple, and time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical industry, in particular to a raw material gasification and mixing device for preparing aminocapronitrile by a pressure method. Background Art

[0002] Aminocapronitrile (6-Aminocapronitrile) is an important organic chemical raw material, mainly used to produce 1,6-hexanediamine (HMDA), which is an important precursor of nylon 66. The preparation methods of aminocapronitrile mainly include gas phase method and liquid phase method, which involve the use of multiple catalysts and different reaction conditions.

[0003] The pressure-based preparation of aminocapronitrile typically involves a chemical reaction conducted under pressure, which can be either a liquid-phase or vapor-phase process. When using the liquid-phase process, caprolactam, an organic solvent (such as adiponitrile or methylglutaronitrile), and a catalyst (such as phosphoric acid or a phosphate) are first mixed in a specific mass ratio to form a mixed solution. The mixed solution is then added to a reactor and stirred and heated. When the mixed solution reaches a certain temperature, ammonia gas is introduced into the mixed solution to react. After the reaction, the reaction product is purified by distillation to obtain pure 6-aminocapronitrile. However, the reactor typically needs to be cleaned after use to facilitate its subsequent use. However, conventional reactors generally require the top cover to be removed and then cleaned, which is cumbersome and time-consuming. Therefore, a raw material vaporization and mixing device for the pressure-based preparation of aminocapronitrile is needed. Utility Model Content

[0004] The purpose of the utility model is to provide a raw material gasification mixing device for preparing aminocapronitrile by a pressure method, which does not require removing the top cover of the reactor for cleaning, is relatively simple, saves time, and solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A raw material gasification and mixing device for preparing aminocapronitrile by a pressure process comprises a reactor, an outer wall of the reactor is fixedly connected to an air inlet pipe, the outer wall of the air inlet pipe is provided with a first valve, the top of the reactor is fixedly connected to a material feed pipe, a rotating rod is rotatably installed inside the reactor, two groups of fixed rods are symmetrically fixedly connected to the outer wall of the rotating rod, one end of each of the two groups of fixed rods is movably plugged with a movable rod, one end of each of the two groups of movable rods is fixedly connected to a cleaning plate, and the cleaning plate is in contact with the inner wall of the reactor, and a water supply component for supplying water to the reactor is provided inside the reactor.

[0007] Preferably, the water supply assembly includes an annular tube, which is arranged at the inner top of the reactor, the bottom of the annular tube is connected to four groups of nozzles, the top of the annular tube is fixedly connected to a water inlet pipe, and the top end of the water inlet pipe passes through the reactor and is located above the reactor.

[0008] Preferably, the four groups of nozzles are fixedly connected to the bottom of the annular tube in an annular array, and the four groups of nozzles are all arranged at an angle.

[0009] Preferably, a movable cavity is opened at one end of the fixed rod, one end of the movable rod is movably inserted into the movable cavity, and a telescopic rod is fixedly installed inside the movable cavity, one end of the telescopic rod is fixedly connected to the movable rod, and a spring is provided on the outer wall of the telescopic rod.

[0010] Preferably, the top end of the rotating rod passes through the reactor and is fixedly connected to a driving motor, and four groups of stirring blades are symmetrically fixedly connected to the outer wall of the rotating rod.

[0011] Preferably, the rotating rod is located below the stirring blade and is symmetrically fixedly connected with two groups of trapezoidal plates, and the two groups of trapezoidal plates are both adapted to the inner bottom of the reactor.

[0012] Preferably, the bottom of the reactor is fixedly connected to a discharge pipe, and a second valve is provided on the outer wall of the discharge pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model allows external cleaning liquid to enter the interior of the reactor through the water supply component and can spray the inner wall of the reactor. Then, the rotating rod drives the two groups of fixed rods to rotate, and the two groups of fixed rods respectively drive the movable rods connected thereto to rotate, thereby rotating the cleaning plate, and the cleaning plate is used to clean the inner wall of the reactor. There is no need to remove the top cover of the reactor for cleaning, which is relatively simple and saves time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model;

[0017] Figure 3 This is a schematic structural diagram of a cutaway fixing rod of the present invention.

[0018] In the figure: 1. Reactor; 2. Air inlet pipe; 3. Feeding pipe; 4. Rotating rod; 5. Fixed rod; 6. Movable rod; 7. Cleaning plate; 8. Annular pipe; 9. Nozzle; 10. Water inlet pipe; 11. Movable chamber; 12. Telescopic rod; 13. Spring; 14. First valve; 15. Drive motor; 16. Stirring blade; 17. Trapezoidal plate; 18. Discharge pipe; 19. Second valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-3 , the utility model provides a technical solution:

[0021] A raw material gasification and mixing device for preparing aminocapronitrile by a pressure method comprises a reactor 1, an air inlet pipe 2 is fixedly connected to the outer wall of the reactor 1, a first valve 14 is provided on the outer wall of the air inlet pipe 2, the air inlet pipe 2 is used to connect to the external ammonia gas, a feed pipe 3 is fixedly connected to the top of the reactor 1, a rotating rod 4 is rotatably installed inside the reactor 1, two groups of fixed rods 5 are symmetrically fixedly connected to the outer wall of the rotating rod 4, one end of each of the two groups of fixed rods 5 is movably plugged with a movable rod 6, one end of each of the two groups of movable rods 6 is fixedly connected to a cleaning plate 7, and the cleaning plate 7 is fixedly connected to the reactor 1. The inner wall of the kettle 1 is fitted together, and a water supply assembly for supplying water to the reactor 1 is provided inside the reactor 1. The external cleaning liquid enters the interior of the reactor 1 through the water supply assembly and can spray the inner wall of the reactor 1. Then, the rotating rod 4 drives the two sets of fixed rods 5 to rotate, and the two sets of fixed rods 5 respectively drive the movable rods 6 connected thereto to rotate, thereby rotating the cleaning plate 7. The cleaning plate 7 is used to clean the inner wall of the reactor 1, and there is no need to remove the top cover of the reactor 1 for cleaning, which is relatively simple and saves time.

[0022] The water supply assembly includes an annular pipe 8, which is arranged at the inner top of the reactor 1. The bottom of the annular pipe 8 is connected to four groups of nozzles 9. The top of the annular pipe 8 is fixedly connected to a water inlet pipe 10, and the top end of the water inlet pipe 10 passes through the reactor 1 and is located above the reactor 1. By connecting the water inlet pipe 10 to an external pump, the cleaning liquid enters the interior of the annular pipe 8 through the water inlet pipe 10, and then is sprayed out through the four groups of nozzles 9 to spray and wet the interior of the reactor 1.

[0023] Four groups of nozzles 9 are fixedly connected to the bottom of the annular tube 8 in an annular array, so as to evenly spray and wet the interior of the reactor 1. The four groups of nozzles 9 are all arranged at an angle. It is worth noting that the water outlet ends of the four groups of nozzles 9 are all directed towards the inner wall of the reactor 1, so as to spray the inner wall of the reactor 1.

[0024] One end of the fixed rod 5 is provided with a movable cavity 11, one end of the movable rod 6 is movably inserted into the interior of the movable cavity 11, and a telescopic rod 12 is fixedly installed inside the movable cavity 11, one end of the telescopic rod 12 is fixedly connected to the movable rod 6, and a spring 13 is provided on the outer wall of the telescopic rod 12. The telescopic rod 12 is conducive to improving the stability of the movable rod 6, thereby improving the stability of the cleaning plate 7, and utilizing the rebound force of the spring 13, the cleaning plate 7 can be tightly fitted with the inner wall of the reactor 1, which is conducive to improving the cleaning effect of the reactor 1;

[0025] The top end of the rotating rod 4 passes through the reactor 1 and is fixedly connected to a drive motor 15. Four sets of stirring blades 16 are symmetrically fixedly connected to the outer wall of the rotating rod 4. The output end of the drive motor 15 drives the rotating rod 4 fixedly connected to it to rotate, and the rotating rod 4 drives the stirring blades 16 connected to it to rotate, thereby stirring the reaction materials inside the reactor 1 and improving the reaction efficiency.

[0026] The rotating rod 4 is located below the stirring blade 16 and is symmetrically fixed with two sets of trapezoidal plates 17. The two sets of trapezoidal plates 17 are adapted to the inner bottom of the reactor 1. When the rotating rod 4 rotates, it drives the two sets of trapezoidal plates 17 to rotate. The two sets of trapezoidal plates 17 are used to stir the reaction materials at the bottom of the reactor 1, thereby more comprehensively stirring the reaction materials inside the reactor 1.

[0027] The bottom of the reactor 1 is fixedly connected to a discharge pipe 18 , and a second valve 19 is provided on the outer wall of the discharge pipe 18 . When the second valve 19 is opened, the reaction product is discharged through the discharge pipe 18 .

[0028] Working principle: When the utility model is used, the external cleaning liquid enters the interior of the reactor 1 through the water supply component, and can spray the inner wall of the reactor 1, and then the two groups of fixed rods 5 are driven to rotate by the rotating rod 4, and the two groups of fixed rods 5 respectively drive the movable rods 6 connected thereto to rotate, thereby rotating the cleaning plate 7, and the cleaning plate 7 is used to clean the inner wall of the reactor 1. There is no need to remove the top cover of the reactor 1 for cleaning, which is relatively simple and saves time.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A raw material gasification and mixing device for preparing aminocapronitrile by a pressure process, comprising a reactor (1), characterized in that: An air inlet pipe (2) is fixedly connected to the outer wall of the reactor (1), a first valve (14) is provided on the outer wall of the air inlet pipe (2), a feed pipe (3) is fixedly connected to the top of the reactor (1), a rotating rod (4) is rotatably installed inside the reactor (1), two groups of fixed rods (5) are symmetrically fixedly connected to the outer wall of the rotating rod (4), one end of each of the two groups of fixed rods (5) is movably connected to a movable rod (6), one end of each of the two groups of movable rods (6) is fixedly connected to a cleaning plate (7), and the cleaning plate (7) is in contact with the inner wall of the reactor (1), and a water supply component for supplying water to the reactor (1) is provided inside the reactor (1).

2. A raw material gasification mixing device for preparing aminocapronitrile by a pressure process according to claim 1, characterized in that: The water supply assembly comprises an annular pipe (8), the annular pipe (8) being arranged at the inner top of the reactor (1), the bottom of the annular pipe (8) being connected to four groups of nozzles (9), the top of the annular pipe (8) being fixedly connected to a water inlet pipe (10), and the top end of the water inlet pipe (10) passing through the reactor (1) and being located above the reactor (1).

3. A raw material gasification mixing device for preparing aminocapronitrile by a pressure process according to claim 2, characterized in that: The four groups of nozzles (9) are fixedly connected to the bottom of the annular tube (8) in an annular array, and the four groups of nozzles (9) are all arranged at an angle.

4. A raw material gasification mixing device for preparing aminocapronitrile by a pressure process according to claim 1, characterized in that: One end of the fixed rod (5) is provided with a movable cavity (11), one end of the movable rod (6) is movably inserted into the movable cavity (11), and a telescopic rod (12) is fixedly installed inside the movable cavity (11), one end of the telescopic rod (12) is fixedly connected to the movable rod (6), and a spring (13) is provided on the outer wall of the telescopic rod (12).

5. A raw material gasification mixing device for preparing aminocapronitrile by a pressure process according to claim 1, characterized in that: The top end of the rotating rod (4) passes through the reactor (1) and is fixedly connected to a driving motor (15). Four groups of stirring blades (16) are symmetrically fixedly connected to the outer wall of the rotating rod (4).

6. A raw material gasification mixing device for preparing aminocapronitrile by a pressure process according to claim 5, characterized in that: The rotating rod (4) is located below the stirring blade (16) and is symmetrically fixedly connected to two groups of trapezoidal plates (17). Both groups of trapezoidal plates (17) are adapted to the inner bottom of the reactor (1).

7. A raw material gasification mixing device for preparing aminocapronitrile by a pressure process according to claim 1, characterized in that: The bottom of the reactor (1) is fixedly connected to a discharge pipe (18), and a second valve (19) is provided on the outer wall of the discharge pipe (18).

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