Amination reaction device for synthesizing cyanophenyl product

Abstract

The invention discloses an amination reaction device for synthesizing cyanophenyl products, and relates to the field of cyanophenyl product production, the amination reaction device comprises a reaction kettle, a support and a motor, the support is fixed at the upper end of the reaction kettle, the motor is fixed on the support, a driving gear and a stirring mechanism are fixed on an output shaft of the motor, the stirring mechanism comprises an air cylinder, and the air cylinder is fixed on the support. The air cylinder is fixed to an output shaft of the motor, a driving rubber wheel is fixed to the output end of the air cylinder, and a movable block is connected to the lower end of the driving rubber wheel through a bearing. According to the amination reaction device for synthesizing the cyanophenyl product, the stirring mechanism capable of automatically adjusting the speed is adopted, so that the stirring speed of materials can be adjusted according to actual production and mixing requirements of different products, the adaptability of the device is improved, and in the amination reaction process of the same product, when the temperature or the pressure in the reaction kettle is too high, the stirring speed can be adjusted; by reducing the stirring speed, the reaction rate of the raw materials is reduced, so that normal operation of the device is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of the production of benzonitrile products, and particularly to an amination reaction device for synthesizing benzonitrile products. Background Art

[0002] Benzonitrile products are widely used in medicine, agriculture, and industry. During the production process of benzonitrile products, amination reactions are required, which are characterized by introducing amino groups into molecules. In amination reactions, amination reaction kettles are often used for the reactions. To ensure the mixing reaction of raw materials, stirring and mixing are required through a stirring device; In the actual use process of existing amination reaction devices, the rotation speed of the stirring device is fixed, resulting in a relatively fixed mixing reaction rate of raw materials. Since the amination reaction is an exothermic reaction, in the actual use process, when the stirring rate is too fast, the collision frequency between molecules increases, the reaction speed accelerates, resulting in an increase in temperature and pressure inside the reaction kettle, which may cause an explosion and pose certain safety hazards. When the stirring rate is too slow, it will affect the uniformity of the distribution of raw materials, thus affecting the product quality and may also produce by-products or impurities. Summary of the Invention

[0003] The purpose of the present invention is to provide an amination reaction device for synthesizing benzonitrile products to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: an amination reaction device for synthesizing benzonitrile products, including a reaction kettle, a support, and a motor. The upper end of the reaction kettle is fixed with a support, and the support is fixed with a motor. The output shaft of the motor is fixed with a driving gear and a stirring mechanism. The stirring mechanism includes a cylinder, the cylinder is fixed on the output shaft of the motor, the output end of the cylinder is fixed with a driving rubber wheel, the lower end of the driving rubber wheel is connected to a movable block through a bearing, one end of the connecting rod is rotatably connected to the movable block, the other end of the connecting rod is rotatably connected to a connecting block, the connecting block is connected to a rotating shaft through a bearing, the rotating shaft is connected to a movable plate through a bearing, the movable plate is slidably connected in a partition, the upper end of the movable plate is fixed with a driven rubber wheel, and the driven rubber wheel is of a conical structure and contacts the driving rubber wheel to achieve transmission. A stirring rod is rotatably connected to the rotating shaft, and a torsion spring is connected between the stirring rod and the rotating shaft. Gravity balls are fixed on the stirring rod.

[0005] Preferably, a feed pipe is installed on the reaction kettle, and the lower end of the feed pipe penetrates through the partition, and the partition is fixed inside the reaction kettle. At the same time, a discharge valve port is installed at the lower end of the reaction kettle. A thermometer and a pressure gauge are also installed on the reaction kettle to monitor the temperature and pressure inside the reaction kettle. Through the functions of the feed pipe and the discharge valve port, the entry and exit of materials can be facilitated, thus providing a basic guarantee for the normal operation of the device.

[0006] Preferably, a protective sleeve is installed outside the reactor, and a water outlet is installed at the lower end of the protective sleeve. A spraying mechanism is installed on the protective sleeve, and a water cooling mechanism is also installed on the protective sleeve. The protective sleeve can protect the water in the spray pipe of the spraying mechanism to prevent water stains from splashing out. Coupled with the function of the water outlet, it can provide a basic guarantee for the recovery of cooling water.

[0007] Preferably, the spraying mechanism includes a rotating rod, a driven gear, a driving gear, a toothed ring, a water guide pipe, a water distribution ring and a nozzle. The rotating rod is connected to the bracket by a bearing, and one end of the rotating rod is fixed to the driven gear, and the driven gear is meshed and driven with the driving gear. Through the transmission between the driving gear and the driven gear, it can provide a basic driving force for the rotation of the rotating rod.

[0008] Preferably, the other end of the rotating rod is fixed to the driving gear, and the driving gear is engaged with the toothed ring to achieve transmission. When the rotating rod rotates, coupled with the transmission between the driving gear and the toothed ring, it can provide a basic driving force for the up and down reciprocating movement of the toothed ring.

[0009] Preferably, a water guide pipe is fixed to the lower end of the toothed ring, and the water guide pipe is slidably connected to the protective sleeve. A water pipe joint is provided on the water guide pipe. When the toothed ring moves, coupled with the sliding guiding function between the water guide pipe and the protective sleeve, it can ensure the stability of the movement of the toothed ring.

[0010] Preferably, the lower end of the water guide pipe is fixed to the water distribution ring, and nozzles are fixed at equal angles on the water distribution ring. The nozzles are arranged on the side of the reactor. Through the functions of the water distribution ring and the nozzles, the spraying of cooling water can be realized, thereby providing a basic guarantee for cooling the reactor.

[0011] Preferably, the water cooling mechanism includes a water storage ring, an installation ring, a vertical rod, a sealing plug, a cross rod, a guiding rod and a spring. The water storage rings are fixed to the outside of the reactor at equal intervals, and the cross section of the water storage ring is an arc structure. Through the function of the water storage ring, the storage of cooling water can be realized, thereby ensuring the contact time between the cooling water and the reactor, and further ensuring the water cooling effect of the reactor.

[0012] Preferably, the installation ring is arranged inside the protective sleeve, and vertical rods are fixed at equal angles on the lower end face of the installation ring. Sealing plugs are fixed at equal intervals on the vertical rods. At the same time, the sealing plugs cooperate with the openings on the water storage ring to achieve sealing. Through the cooperation and separation of the sealing plugs and the openings on the water storage ring, the release of the cooling water in the water storage ring can be realized, thereby providing a basic guarantee for replacing the cooling water in the water storage ring.

[0013] Preferably, cross bars are fixedly arranged on the side of the mounting ring at equal angles. The cross bars are located above the water distribution ring, and guide rods are fixedly arranged on the cross bars. The guide rods are slidably connected with the protective sleeve. A spring is fixedly arranged between the cross bars and the protective sleeve. The force generated by the contact between the water distribution ring and the cross bars can provide a basic force for the movement of the mounting ring, the vertical rod and the sealing plug, thus providing a basic guarantee for the release of the cooling water in the water storage ring. With the elastic action of the spring, it can provide a basic guarantee for the automatic reset of the mounting ring, the vertical rod and the sealing plug.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The amination reaction device for synthesizing benzonitrile products adopts a stirrer mechanism with automatic speed regulation. It can not only adjust the stirring speed of the materials according to the actual production and mixing requirements of different products to improve the adaptability of the device, but also reduce the stirring speed when the temperature or pressure in the reaction kettle is too high or too large during the amination reaction of the same product, so as to reduce the reaction rate of the raw materials and ensure the normal operation of the device. When adjusting the stirring speed of the stirring rod, with the cooperation of the connecting rod and the movable plate, the position of the stirring rod can be adjusted synchronously. Therefore, no matter what the rotation speed and the unfolding angle of the stirring rod are, the stirring rod can always ensure sufficient stirring of the materials on the inner and outer peripheries of the reaction kettle. 2. The amination reaction device for synthesizing benzonitrile products adopts a spray-type water cooling mechanism instead of the traditional spiral pipe water cooling mechanism, which can better realize the water cooling and heat exchange function of the reaction kettle. By moving the spray head up and down, the water cooling area can be increased to ensure the water cooling effect. With the cooperation of the water storage ring, the cooling water can be stored to increase the contact time between the cooling water and the reaction kettle, further ensuring the water cooling and heat exchange effect. With the cooperation of the linked sealing mechanism, the release of the cooling water in the water storage ring can be realized, which is convenient for replacing the cooling water in the water storage ring and ensuring the water cooling effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view three-dimensional structure schematic diagram of the whole device of the present invention; Figure 2 is a front view sectional three-dimensional structure schematic diagram of the whole device of the present invention; Figure 3 is a front view three-dimensional structure schematic diagram of the composition of the stirring mechanism of the present invention; Figure 4 is a bottom view three-dimensional structure schematic diagram of the composition of the stirring mechanism of the present invention; Figure 5 is a three-dimensional structure schematic diagram of the composition of the spraying mechanism of the present invention; Figure 6 is a three-dimensional structure schematic diagram of the composition of the water cooling mechanism of the present invention; Figure 7 of the present invention Figure 6Schematic enlarged structure diagram at position A in [the figure].

[0016] In the figure: 1, reaction kettle; 101, feed pipe; 102, partition board; 103, discharge valve port; 2, protective sleeve; 201, water outlet; 3, support; 4, motor; 5, driving gear; 6, stirring mechanism; 601, cylinder; 602, driving rubber wheel; 603, movable block; 604, connecting rod; 605, connecting block; 606, rotating shaft; 607, movable plate; 608, driven rubber wheel; 609, stirring rod; 610, gravity ball; 7, spraying mechanism; 701, rotating rod; 702, driven gear; 703, driving gear; 704, toothed ring; 705, water guide pipe; 706, water distribution ring; 707, nozzle; 8, water cooling mechanism; 801, water storage ring; 802, mounting ring; 803, vertical rod; 804, sealing plug; 805, cross bar; 806, guide rod; 807, spring. Specific embodiments

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figures 1-7 , the present invention provides a technical solution: an amination reaction device for synthesizing benzonitrile products, including a reaction kettle 1, a support 3 and a motor 4. A support 3 is fixed at the upper end of the reaction kettle 1, and a motor 4 is fixed on the support 3. A driving gear 5 and a stirring mechanism 6 are fixed on the output shaft of the motor 4. The stirring mechanism 6 includes a cylinder 601, the cylinder 601 is fixed on the output shaft of the motor 4, a driving rubber wheel 602 is fixed at the output end of the cylinder 601, a movable block 603 is connected to the lower end of the driving rubber wheel 602 by a bearing, one end of a connecting rod 604 is rotatably connected to the movable block 603, the other end of the connecting rod 604 is rotatably connected to a connecting block 605, the connecting block 605 is connected to a rotating shaft 606 by a bearing, the rotating shaft 606 is connected to a movable plate 607 by a bearing, the movable plate 607 is slidably connected in the partition board 102, a driven rubber wheel 608 is fixed at the upper end of the movable plate 607, and the driven rubber wheel 608 is of a conical structure, and the driven rubber wheel 608 is in contact with the driving rubber wheel 602 to achieve transmission. A stirring rod 609 is rotatably connected to the rotating shaft 606, and a torsion spring is connected between the stirring rod 609 and the rotating shaft 606. A gravity ball 610 is fixed on the stirring rod 609.

[0019] A feed pipe 101 is installed on the reactor 1, and the lower end of the feed pipe 101 penetrates through the partition plate 102, and the partition plate 102 is fixed inside the reactor 1. At the same time, a discharge valve port 103 is installed at the lower end of the reactor 1. A thermometer and a pressure gauge are also installed on the reactor 1 to monitor the temperature and pressure inside the reactor 1; When using the amination reaction device for synthesizing the benzonitrile product, as Figures 1-4 shown, the raw materials to be reacted are injected into the reactor 1 through the feed pipe 101. At this time, the discharge valve port 103 is in a closed state. At this time, the motor 4 is started synchronously. The motor 4 can drive the cylinder 601 and the driving rubber wheel 602 to rotate. With the frictional transmission between the driving rubber wheel 602 and the driven rubber wheel 608, the rotating shaft 606 can be rotated, so as to drive the stirring rod 609 to rotate. With the rotational centrifugal action of the gravity ball 610, the stirring rod 609 is expanded by a certain angle. The stirring action of the raw materials can be realized through the stirring rod 609, which is convenient for the amination reaction of the raw materials. During the actual use of the device, when it is necessary to adjust the rotation speed of the stirring rod 609, only need to control the cylinder 601 to expand and contract, so as to drive the driving rubber wheel 602 to move. Taking the extension of the cylinder 601 as an example, when the cylinder 601 extends and drives the driving rubber wheel 602 to move downward, the movable block 603 is driven to move downward synchronously. With the transmission of the connecting rod 604, the connecting block 605 and the rotating shaft 606 are moved, so that the driven rubber wheel 608 moves synchronously, and the driven rubber wheel 608 and the driving rubber wheel 602 always remain in contact. At this time, the diameter of the contact position between the driving rubber wheel 602 and the driven rubber wheel 608 increases, so that the rotation speed of the driven rubber wheel 608 and the rotating shaft 606 decreases, thereby reducing the stirring speed of the stirring rod 609 for the raw materials. And because the rotation speed of the rotating shaft 606 decreases, the centrifugal force received by the gravity ball 610 at this time decreases. With the action of the torsion spring, the inclination angle of the stirring rod 609 decreases, further reducing the stirring range of the stirring rod 609, thereby effectively reducing the mixing rate of the raw materials. On the contrary, when the cylinder 601 contracts, the rotation speed of the rotating shaft 606 increases and the centrifugal force received by the gravity ball 610 increases, so that the inclination angle of the stirring rod 609 increases under the centrifugal action of the gravity ball 610, thereby increasing the stirring area of the stirring rod 609 for the raw materials, and then increasing the mixing rate of the raw materials; A protective sleeve 2 is installed outside the reactor 1, and a water outlet 201 is installed at the lower end of the protective sleeve 2. A spraying mechanism 7 is installed on the protective sleeve 2, and a water cooling mechanism 8 is also installed on the protective sleeve 2. The spraying mechanism 7 includes a rotating rod 701, a driven gear 702, a driving gear 703, a toothed ring 704, a water guide pipe 705, a water distribution ring 706 and a nozzle 707. The rotating rod 701 is connected to the bracket 3 by a bearing, and one end of the rotating rod 701 is fixed to the driven gear 702, and the driven gear 702 is meshed and driven with the driving gear 5. The other end of the rotating rod 701 is fixed to the driving gear 703, and the driving gear 703 is engaged with the toothed ring 704 to realize transmission. The lower end of the toothed ring 704 is fixed with a water guide pipe 705, and the water guide pipe 705 is slidably connected to the protective sleeve 2, and a water pipe joint is provided on the water guide pipe 705. The lower end of the water guide pipe 705 is fixed to the water distribution ring 706, and nozzles 707 are fixed at equal angles on the water distribution ring 706, and the nozzles 707 are arranged on the side of the reactor 1. The water cooling mechanism 8 includes a water storage ring 801, an installation ring 802, a vertical rod 803, a sealing plug 804, a cross rod 805, a guide rod 806 and a spring 807. The water storage rings 801 are fixed on the outside of the reactor 1 at equal intervals, and the cross section of the water storage ring 801 is an arc-shaped structure. The installation ring 802 is arranged inside the protective sleeve 2, and vertical rods 803 are fixed at equal angles on the lower end surface of the installation ring 802, and sealing plugs 804 are fixed at equal intervals on the vertical rods 803, and the sealing plugs 804 are matched with the openings on the water storage ring 801 to realize sealing. Cross rods 805 are fixed at equal angles on the side of the installation ring 802, and the cross rods 805 are located above the water distribution ring 706, and guide rods 806 are fixed on the cross rods 805, and the guide rods 806 are slidably connected to the protective sleeve 2, and springs 807 are fixed between the cross rods 805 and the protective sleeve 2; During the operation of the device, such as Figures 1-7As shown in the figure, since the amination reaction of the raw materials in the reaction kettle 1 is an exothermic reaction, cooling is required. At this time, the cooling water delivery pipe is connected to the water inlet joint of the water guide pipe 705, and water is sent into the water guide pipe 705 through a water pump. The water outlet 201 is connected to the cooling water tank through a conduit to realize the recycling of cooling water. The cooling water enters the nozzle 707 through the guiding action of the water guide pipe 705 and the water distribution ring 706 and sprays outwards. The sprayed cooling water contacts the outer wall of the reaction kettle 1, thereby realizing the primary water cooling and heat dissipation function of the reaction kettle 1. With the cooperation of the protective sleeve 2, it can effectively prevent water mist from splashing outwards. When the motor 4 is started, it synchronously drives the driving gear 5 to rotate. With the transmission between the driving gear 5 and the driven gear 702 and the transmission between the transmission gear 703 and the toothed ring 704, the water guide pipe 705, the water distribution ring 706 and the nozzle 707 can move up and down orderly, thereby increasing the contact area between the cooling water and the outer wall of the reaction kettle 1 and further ensuring the water cooling effect of the outer wall of the reaction kettle 1. After the water sprayed by the nozzle 707 contacts the outer wall of the reaction kettle 1, part of the cooling water is received and stored by the water storage ring 801. By contacting the outer wall of the reaction kettle 1 with the cooling water stored in the water storage ring 801, the contact time between the cooling water and the outer wall of the reaction kettle 1 can be increased, and the heat exchange effect of the cooling water can be improved. During the up and down movement of the water distribution ring 706, when the water distribution ring 706 moves up to contact the cross bar 805, the cross bar 805 is forced to move up with the water distribution ring 706, thereby driving the mounting ring 802, the vertical rod 803 and the sealing plug 804 to move up. With the sliding guiding action between the guiding rod 806 and the protective sleeve 2, the stability of the upward movement of the mounting ring 802, the vertical rod 803 and the sealing plug 804 can be ensured. At this time, the spring 807 is forced to contract. When the sealing plug 804 moves up to separate from the opening on the water storage ring 801, the cooling water stored in the water storage ring 801 is discharged into the protective sleeve 2 through the opening on the water storage ring 801 and flows back into the cooling water tank through the water outlet 201 and the conduit. When the water distribution ring 706 moves down and separates from the cross bar 805, at this time, under the action of the spring 807, the sealing plug 804 is matched with the opening on the water storage ring 801 to realize sealing. At this time, the cooling water sprayed by the nozzle 707 enters the water storage ring 801 again for storage to realize heat exchange, thereby realizing the automatic replacement function of the cooling water in the water storage ring 801, and further effectively ensuring the heat dissipation effect of the device. This is the working principle of the amination reaction device for the synthesis of benzonitrile products.

[0020] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0021] In this article, specific examples are used to illustrate the principles and implementation manners of the present invention. The descriptions of the above examples are only for helping to understand the method of the present invention and its core idea. The above is only the preferred implementation manner of the present invention. It should be noted that due to the limited nature of literal expression and objectively infinite specific structures, for those of ordinary skill in the art, without departing from the principles of the present invention, several improvements, refinements or changes can be made, or the above technical features can be combined in an appropriate manner; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. An amination reaction device for synthesizing a benzonitrile product, comprising a reaction kettle (1), a bracket (3) and a motor (4), wherein the bracket (3) is fixed on the upper end of the reaction kettle (1), and the motor (4) is fixed on the bracket (3), characterized in that: A driving gear (5) and a stirring mechanism (6) are fixed to the output shaft of the motor (4). The stirring mechanism (6) comprises a cylinder (601). The cylinder (601) is fixed to the output shaft of the motor (4). A driving rubber wheel (602) is fixed to the output end of the cylinder (601). A movable block (603) is connected to the lower end of the driving rubber wheel (602) through a bearing. The movable block (603) is rotatably connected to one end of a connecting rod (604). The other end of the connecting rod (604) is rotatably connected to a connecting block (605). The connecting block (605) is connected to a rotating shaft (606) through a bearing. The rotating shaft (606) is connected to a movable plate (607) through a bearing. The movable plate (607) is slidably connected to the partition (102). A driven rubber wheel (608) is fixed to the upper end of the movable plate (607). , and the driven rubber wheel (608) is a conical structure, and the driven rubber wheel (608) contacts the driving rubber wheel (602) to realize transmission, the rotating shaft (606) is rotatably connected to a stirring rod (609), and a torsion spring is connected between the stirring rod (609) and the rotating shaft (606), and a gravity ball (610) is fixed to the stirring rod (609), and the water cooling mechanism (8) comprises a water storage ring (801), and the water storage ring (801) is fixed at equal intervals on the outside of the reaction kettle (1), and the cross section of the water storage ring (801) is an arc structure; the mounting ring (802) is arranged in the protective sleeve (2), and the lower end surface of the mounting ring (802) is fixed with vertical rods (803) at equal angles, and sealing plugs (804) are fixed on the vertical rods (803) at equal intervals, and the sealing plugs (804) cooperate with the openings on the water storage ring (801) to realize sealing.

2. The amination reaction device for synthesizing a benzonitrile product according to claim 1, characterized in that: The reactor (1) is provided with a feed pipe (101), the lower end of which passes through a partition (102), and the partition (102) is fixed in the reactor (1). A discharge valve (103) is provided at the lower end of the reactor (1). The reactor (1) is also provided with a temperature gauge and a pressure gauge for monitoring the temperature and pressure in the reactor (1).

3. The amination reaction device for synthesizing a benzonitrile product according to claim 1, characterized in that: A protective sleeve (2) is installed on the outside of the reaction kettle (1), a water outlet (201) is installed at the lower end of the protective sleeve (2), a spray mechanism (7) is installed on the protective sleeve (2), and a water cooling mechanism (8) is also installed on the protective sleeve (2).

4. The amination reaction device for synthesizing a benzonitrile product according to claim 3, characterized in that: The spray mechanism (7) comprises a rotating rod (701), a driven gear (702), a transmission gear (703), a gear ring (704), a water guide pipe (705), a water dividing ring (706) and a spray head (707); the rotating rod (701) is bearing-connected to the bracket (3); one end of the rotating rod (701) and the driven gear (702) are fixed to each other; and the driven gear (702) and the driving gear (5) are meshed and transmitted.

5. The amination reaction device for synthesizing a benzonitrile product according to claim 4, characterized in that: The other end of the rotating rod (701) is fixed to the transmission gear (703), and the transmission gear (703) cooperates with the gear ring (704) to realize transmission.

6. The amination reaction device for synthesizing a benzonitrile product according to claim 4, characterized in that: A water pipe (705) is fixed to the lower end of the toothed ring (704), the water pipe (705) and the protective sleeve (2) are slidably connected, and a water pipe joint is provided on the water pipe (705).

7. The amination reaction device for synthesizing a benzonitrile product according to claim 4, characterized in that: The lower end of the water guide pipe (705) is fixed to the water dividing ring (706), and a nozzle (707) is fixed at an equal angle on the water dividing ring (706), and the nozzle (707) is arranged on the side of the reaction kettle (1).

8. The amination reaction device for synthesizing a benzonitrile product according to claim 1, characterized in that: A cross bar (805) is fixed at an equal angle to the side of the mounting ring (802), and the cross bar (805) is located above the water dividing ring (706). A guide rod (806) is fixed to the cross bar (805), and the guide rod (806) is slidably connected to the protective sleeve (2). A spring (807) is fixed between the cross bar (805) and the protective sleeve (2).

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