High-purity preparation device for synthesizing acetonitrile

Abstract

The utility model provides a high-purity preparation device for synthesizing acetonitrile. The high-purity synthetic acetonitrile preparation device comprises a reaction kettle body, a cover plate is in contact with the top of the reaction kettle body in an attached mode, a plurality of sets of fasteners are installed between the cover plate and the top of the reaction kettle body, a first feeding pipe and a second feeding pipe are installed at the top of the cover plate, a second magnet is placed at the bottom in the reaction kettle body, and the second magnet is arranged in the reaction kettle body. A protruding block is installed on the top of the second magnet. According to the high-purity preparation device for synthesizing acetonitrile provided by the utility model, ammonium acetate and a metal oxide catalyst can be stirred to accelerate a dehydration reaction so as to obtain acetonitrile through interaction of components such as the motor, the circular block, the rectangular plate, the telescopic rod, the magnet I, the magnet II, the convex block and the stirring blades; compared with a traditional paddle stirrer which enables paddles to rotate through mechanical transmission to stir ammonium acetate and a metal oxide catalyst, the device guarantees the sealing performance, and the preparation process is safer.

Description

TECHNICAL FIELD

[0001] The utility model relates to acetonitrile high purity preparation technical field especially relates to a kind of device of synthetic acetonitrile high purity preparation. BACKGROUND

[0002] For the synthesis of acetonitrile, the commonly used reaction is prepared by ammonia acetate dehydration reaction. The reaction container usually adopts stainless steel material pressure-resistant reactor. This material can withstand high temperature and certain pressure in the reaction process, and has good chemical stability, and will not react with reactants and products.

[0003] The existing reactor is equipped with a stirring device. The stirrer is mainly a paddle stirrer. Its main components are that the reactor is externally provided with a driving device (motor). The output end of the driving device is connected with a transmission rod, and the transmission rod penetrates into the inside of the reactor. The transmission rod outside wall located in the inside of the reactor is installed with stirring blades. Since the transmission rod penetrates from the outside into the inside of the reactor, the sealing property of the reactor cannot be guaranteed.

[0004] Therefore, it is necessary to provide a device for synthesizing acetonitrile with high purity to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of device for synthesizing acetonitrile with high purity, solve the problem that the sealing property of reactor cannot be guaranteed.

[0006] To solve the above technical problems, the device for synthesizing acetonitrile with high purity provided by the utility model comprises: a reaction kettle body, a cover plate is attached to the top of the reaction kettle body, a plurality of sets of fasteners are installed between the cover plate and the top of the reaction kettle body, a feed pipe one and a feed pipe two are respectively installed on the top of the cover plate, a magnet two is placed in the bottom of the reaction kettle body, a protruding block is installed on the top of the magnet two, a plurality of sets of stirring blades are uniformly installed on the outer wall of the protruding block, a supporting assembly is installed on the bottom of the reaction kettle body, a connecting plate is installed on the supporting assembly, an installation plate is installed between the two connecting plates, a motor is installed on the bottom of the installation plate, the output end of the motor penetrates through the installation plate, and a circular block is installed on the output end of the motor, a limiting groove is formed in the side wall of the circular block, a limiting block is inserted and connected in the inner wall of the limiting groove, a limiting assembly is installed between the outer wall of the limiting block and the outer wall of the circular block, a rectangular plate is installed on the top of the limiting block, an extension rod is installed on the top of the rectangular plate, a magnet one is installed on the top of the extension rod, a handle is installed on the bottom of the magnet one, the top of the magnet one is attached to the bottom of the reaction kettle body, a spring is installed between the bottom of the reaction kettle body and the top of the rectangular plate, and the spring is sleeved on the outside of the extension rod.

[0007] Preferably, the limiting assembly comprises a ring-shaped ring, the ring-shaped ring is rotatably connected with the lower end outer wall of the circular block, the outer wall of the ring-shaped ring is provided with a limiting plate, and the inner wall of the limiting plate is in abutting contact with the outer wall of the limiting block.

[0008] Preferably, the supporting assembly comprises a ring-shaped plate one, the ring-shaped plate one is fixedly connected with the bottom of the reaction kettle body, a plurality of groups of supporting columns are uniformly arranged on the bottom of the ring-shaped plate one, a ring-shaped plate two is arranged on the bottom of the plurality of groups of supporting columns, and the outer walls of the two groups of supporting columns are fixedly connected with the two groups of connecting plates.

[0009] Preferably, the reaction kettle body is internally provided with a ring-shaped bin, the inner wall of the ring-shaped bin is provided with a heat-conducting wire, the outer wall of the reaction kettle body is provided with a control device, and the control device is electrically connected with the heat-conducting wire.

[0010] Preferably, the outer wall of the upper end of the reaction kettle body is provided with a liquid inlet pipe, the outer wall of the lower end of the reaction kettle body is provided with a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are in communication with the inside of the ring-shaped bin.

[0011] Preferably, a sealing ring is arranged at the connecting position of the cover plate and the top of the reaction kettle body.

[0012] Compared with the related art, the device for preparing high-purity synthetic acetonitrile has the following advantages

[0013] Advantages:

[0014] The device for preparing high-purity synthetic acetonitrile can stir ammonium acetate and metal oxide catalyst to accelerate dehydration reaction to obtain acetonitrile, and compared with the traditional paddle stirrer which rotates the paddle to stir ammonium acetate and metal oxide catalyst through mechanical transmission, the device ensures the sealing property and makes the preparation process safer. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A preferred embodiment structure of the device for preparing high-purity synthetic acetonitrile is shown in the structure diagram.

[0016] Figure 2 A preferred embodiment structure of the device for preparing high-purity synthetic acetonitrile is shown in the structure diagram. Figure 1 A preferred embodiment structure of the device for preparing high-purity synthetic acetonitrile is shown in the structure diagram.

[0017] Figure 3 A preferred embodiment structure of the device for preparing high-purity synthetic acetonitrile is shown in the structure diagram. Figure 1 A preferred embodiment structure of the device for preparing high-purity synthetic acetonitrile is shown in the structure diagram.

[0018] Figure 4 A preferred embodiment structure of the device for preparing high-purity synthetic acetonitrile is shown in the structure diagram. Figure 2 A preferred embodiment structure of the device for preparing high-purity synthetic acetonitrile is shown in the structure diagram.

[0019] Figure 5 For Figure 3 B part enlarged view as shown.

[0020] Figure label: 1, reactor body, 2, control device, 3, liquid inlet pipe, 4, fastener, 5, feed pipe one, 6, cover plate, 7, feed pipe two, 8, liquid outlet pipe, 9, mounting plate, 10, motor, 11, support assembly, 111, annular plate one, 112, support column, 113, annular plate two, 12, sealing ring, 13, annular bin, 14, heat-conducting wire, 15, protrusion, 16, magnet one, 17, connecting plate, 18, magnet two, 19, stirring blade, 20, telescopic rod, 21, spring, 22, handle, 23, circular block, 24, limiting assembly, 241, annular ring, 242, limiting plate, 25, limiting block, 26, limiting groove, 27, rectangular plate. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and embodiments.

[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , wherein, Figure 1 is a preferred embodiment of the structure schematic view of the device for preparing high-purity acetonitrile synthesis provided by the utility model; Figure 2 is the structure schematic view of the internal structure of the reactor body shown in Figure 1 ; Figure 3 is the structure schematic view of the stirring blade structure shown in Figure 1 ; Figure 4 is the A part enlarged schematic view shown in Figure 2 ; Figure 5 is the B part enlarged schematic view shown in Figure 3The B part enlarged view. The device for synthesizing acetonitrile high purity preparation includes: the reaction kettle body 1, the top of the reaction kettle body 1 is in contact with the cover plate 6, a plurality of sets of fasteners 4 are installed between the cover plate 6 and the top of the reaction kettle body 1, the top of the cover plate 6 is respectively installed with the feed pipe one 5 and the feed pipe two 7, the magnet two 18 is placed in the bottom of the reaction kettle body 1, the top of the magnet two 18 is installed with the lug 15, the outer wall of the lug 15 is uniformly installed with a plurality of sets of stirring blades 19, the bottom of the reaction kettle body 1 is installed with the support assembly 11, the support assembly 11 is installed with the connecting plate 17, the mounting plate 9 is installed between the two connecting plates 17, the motor 10 is installed at the bottom of the mounting plate 9, the output end of the motor 10 penetrates through the mounting plate 9, and the output end of the motor 10 is installed with the circular block 23, the side wall of the circular block 23 is provided with the limiting groove 26, the limiting groove 26 penetrates through the top of the circular block 23, the limiting groove 26 is inserted and connected with the limiting block 25, the limiting block 25 is installed between the outer wall of the limiting block 25 and the outer wall of the circular block 23, the limiting block 25 is installed with the rectangular plate 27, the top of the rectangular plate 27 is installed with the telescopic rod 20, the top of the magnet one 16 is installed with the telescopic rod 20, the bottom of the magnet one 16 is installed with the handle 22, the top of the magnet one 16 is in contact with the bottom of the reaction kettle body 1, the spring 21 is installed between the bottom of the reaction kettle body 1 and the top of the rectangular plate 27, and the spring 21 is sleeved on the outside of the telescopic rod 20.

[0023] The limiting assembly 24 includes an annular ring 241, the annular ring 241 is rotatably connected with the lower end outer wall of the circular block 23, the outer wall of the annular ring 241 is installed with a limiting plate 242, the inner wall of the limiting plate 242 is in contact with the outer wall of the limiting block 25, the limiting plate 242 is arc-shaped, rotating the annular ring 241 makes the limiting plate 242 away from the entering end of the limiting groove 26, thereby facilitating the limiting block 25 to be taken out from the inside of the limiting groove 26.

[0024] The support assembly 11 includes an annular plate one 111, the annular plate one 111 is fixedly connected with the bottom of the reaction kettle body 1, a plurality of sets of support columns 112 are uniformly installed at the bottom of the annular plate one 111, an annular plate two 113 is installed at the bottom of the plurality of sets of support columns 112, and the outer walls of the two sets of support columns 112 are fixedly connected with the two connecting plates 17.

[0025] The side wall of the reaction kettle body 1 is provided with an annular bin 13, the inner wall of the annular bin 13 is installed with heat conducting wire 14, the outer wall of the reaction kettle body 1 is installed with a control device 2, the control device 2 is electrically connected with the heat conducting wire 14, the annular bin 13 is filled with heat preservation liquid, the control device 2 can control the temperature of the heat conducting wire 14 to rise, thereby heating the heat preservation liquid, which is used for increasing the temperature of the inner wall of the reaction kettle body 1.

[0026] The upper end outer wall of the reaction kettle body 1 is provided with a liquid inlet pipe 3, and the lower end outer wall of the reaction kettle body 1 is provided with a liquid outlet pipe 8, both of which are communicated with the inside of the annular bin 13, and the heat preservation liquid is delivered into the inside of the annular bin 13 through the liquid inlet pipe 3, and the heat preservation liquid is conveniently discharged through the liquid outlet pipe 8.

[0027] The connecting part of the cover plate 6 and the top of the reaction kettle body 1 is provided with a sealing ring 12, which can not only ensure that the reaction kettle body 1 and the cover plate 6 form a sealing device, but also has certain corrosion resistance.

[0028] The working principle of the device for preparing high-purity synthetic acetonitrile is as follows: ammonium acetate is sent into the inside of the reaction kettle body 1 through the feed pipe one 5, and the metal oxide catalyst (such as aluminum oxide) is sent into the inside of the reaction kettle body 1 through the feed pipe two 7, then the output end of the motor 10 drives the magnet one 16 to rotate continuously through the circular block 23, the rectangular plate 27 and the telescopic rod 20, and because the magnet one 16 and the magnet two 18 attract each other, the magnet two 18 drives the stirring blade 19 to continuously stir the ammonium acetate and the metal oxide catalyst while the magnet one 16 rotates, so that the dehydration reaction is accelerated to obtain acetonitrile, when the magnet one 16 needs to be replaced, the limiting assembly 24 is first opened, then the magnet one 16 is pulled down through the handle 22, at this time the telescopic rod 20 and the spring 21 are in a compressed state, when the magnet one 16 leaves the bottom of the reaction kettle body 1, the limiting block 25 is pulled out from the limiting groove 26, and the assembly above the rectangular plate 27 can be taken out.

[0029] Compared with the related art, the device for preparing high-purity synthetic acetonitrile has the following advantages

[0030] Advantages:

[0031] Through the interaction of the motor 10, the circular block 23, the rectangular plate 27, the telescopic rod 20, the magnet one 16, the magnet two 18, the protruding block 15 and the stirring blade 19, the ammonium acetate and the metal oxide catalyst can be stirred to accelerate the dehydration reaction to obtain acetonitrile, compared with the traditional paddle stirrer which rotates the paddle to stir the ammonium acetate and the metal oxide catalyst through mechanical transmission, the device ensures the sealing, and the preparation process is safer.

[0032] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion according to the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. An apparatus for the high-purity preparation of synthetic acetonitrile, characterized in that, include: The reactor body has a cover plate attached to its top. Several sets of fasteners are installed between the cover plate and the top of the reactor body. Feed pipe one and feed pipe two are respectively installed on the top of the cover plate. A magnet two is placed at the bottom of the reactor body, and a protrusion is installed on the top of the magnet two. Several sets of stirring blades are evenly installed on the outer wall of the protrusion. A support assembly is installed at the bottom of the reactor body, and a connecting plate is installed on the support assembly. An mounting plate is installed between two sets of connecting plates, and a motor is installed at the bottom of the mounting plate. The motor's output end... A circular block is installed at the output end of the motor through the mounting plate. A limit groove is formed on the side wall of the circular block. A limit block is inserted into the inner wall of the limit groove. A limit component is installed between the outer wall of the limit block and the outer wall of the circular block. A rectangular plate is installed on the top of the limit block. A telescopic rod is installed on the top of the rectangular plate. A magnet is installed on the top of the telescopic rod. A handle is installed at the bottom of the magnet. The top of the magnet is in close contact with the bottom of the reactor body. A spring is installed between the bottom of the reactor body and the top of the rectangular plate. The spring is sleeved on the outside of the telescopic rod.

2. The apparatus for preparing high-purity acetonitrile according to claim 1, characterized in that, The limiting component includes an annular ring, which is rotatably connected to the lower outer wall of the circular block. A limiting plate is installed on the outer wall of the annular ring, and the inner wall of the limiting plate is in close contact with the outer wall of the limiting block.

3. The apparatus for preparing high-purity acetonitrile according to claim 1, characterized in that, The support assembly includes an annular plate one, which is fixedly connected to the bottom of the reactor body. Several sets of support columns are evenly installed at the bottom of the annular plate one, and an annular plate two is installed at the bottom of the several sets of support columns. The outer walls of the two sets of support columns are fixedly connected to two sets of connecting plates.

4. The apparatus for preparing high-purity acetonitrile according to claim 1, characterized in that, An annular chamber is provided inside the side wall of the reactor body. A heat-conducting wire is installed on the inner wall of the annular chamber. A control device is installed on the outer wall of the reactor body. The control device is electrically connected to the heat-conducting wire.

5. The apparatus for preparing high-purity acetonitrile according to claim 4, characterized in that, An inlet pipe is installed on the upper outer wall of the reactor body, and an outlet pipe is installed on the lower outer wall of the reactor body. Both the inlet pipe and the outlet pipe are connected to the interior of the annular chamber.

6. The apparatus for preparing high-purity acetonitrile according to claim 1, characterized in that, A sealing ring is installed at the connection between the cover plate and the top of the reactor body.

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