CN214765438U

CN214765438U - Continuous production device of azodiisobutyronitrile

Info

Publication number: CN214765438U
Application number: CN202120565763.6U
Authority: CN
Inventors: 王甫彬
Original assignee: Liaoning Shuangqi Fine Chemical Co ltd
Current assignee: Liaoning Shuangqi Fine Chemical Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-11-19
Anticipated expiration: 2031-03-19

Abstract

The utility model discloses a continuous production device of azodiisobutyronitrile, which comprises a kettle body, wherein a motor is fixedly arranged on the top surface of the kettle body, the output end of the motor penetrates through the kettle body and is connected with a stirring paddle in a rotating way, a ring pipe is arranged on the periphery of the upper part of the stirring paddle, an air hole is arranged on the inner ring of the ring pipe, and a feed inlet is arranged on the top surface of the kettle body on one side of the motor; the utility model discloses in, open the liquid pump through control panel, make the hose, the inside formation negative pressure suction of eduction tube and communicating pipe, make the internal upper strata liquid of cauldron (both azodiisobutyronitrile) see through the through-hole on rubber disc surface and inhale communicating pipe, until the internal upper strata liquid of cauldron by the leading-in corresponding storage household utensils of hose and eduction tube, make the internal upper strata liquid of cauldron can in time remove, reduce the condition that causes partial azodiisobutyronitrile to decompose because of the overchlorination, also can avoid the condition that excessive azodiisobutyronitrile influences stirring efficiency, be favorable to azodiisobutyronitrile's continuous production.

Description

Continuous production device of azodiisobutyronitrile

Technical Field

The utility model relates to an organic chemical production technical field especially relates to a continuous production device of azo-bis-isobutyronitrile.

Background

Azodiisobutyronitrile belongs to organic initiator type products, has wide application in the aspects of initiators and foaming agents, can be used as initiators of reactions of high polymer and organic free radicals such as polyvinyl chloride, polyvinyl acetate, polyacrylonitrile, polystyrene, polysiloxane and the like, and can also be used as foaming agents of plastic rubber and the like.

At present, the production of azobisisobutyronitrile by a chlorine introduction method is widely applied to organic chemical production, and in a chlorination reaction kettle for preparing azobisisobutyronitrile, the azobisisobutyronitrile generated by the reaction is not removed in time, so that not only is the azobisisobutyronitrile generated by the reaction easily decomposed by overchlorination, but also the yield is low, meanwhile, the azobisisobutyronitrile generated by the reaction floats on the upper part of the reaction kettle due to low density, and particularly, in the middle and later stages of the reaction, the floating amount of the azobisisobutyronitrile generated by the reaction is more and more, so that the stirring effect is obviously reduced, the reaction is more severe in the later stage of the reaction, and the floating azobisisobutyronitrile causes insufficient reaction of chlorine and hydrogenated azobisisobutyronitrile, so that the azobisisobutyronitrile generated by the reaction is easily overchlorinated to be decomposed, and the continuous production of the azobisisobutyronitrile is not facilitated.

Therefore, a continuous production device of azobisisobutyronitrile is provided, which has the advantages of continuous production and further solves the problems in the background art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a continuous production device of azodiisobutyronitrile.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a continuous production device of azo-bis-isobutyronitrile, includes the cauldron body, the top surface fastening of the cauldron body installs the motor, and the output of motor runs through the cauldron body and rotates and be connected with the stirring rake, the periphery on stirring rake upper portion is provided with the annular tube, and the inner circle of annular tube sets up there is the gas pocket, motor one side is located the top surface of the cauldron body and has seted up the feed inlet, and the top surface intercommunication that the motor opposite side is located the cauldron body has the draft tube, the one end of draft tube runs through cauldron body flange joint and has the hose, and the one end flange joint of hose has communicating pipe, the surface intercommunication of communicating pipe has the suction cover, and the bottom surface veneer of suction cover is connected with the rubber dish, the surface of rubber dish link up the suction cover and has seted up the through-hole, the surface mounting of suction tube has the liquid pump, the bottom surface intercommunication of the cauldron body has the bin outlet, and the surface mounting of bin outlet has the valve.

As a further description of the above technical solution: cauldron body side surface is provided with first circulating pipe, and the surface mounting of first circulating pipe has first air pump, cauldron body side surface is provided with the second circulating pipe, and the surface mounting of second circulating pipe has the second air pump, the one end of first circulating pipe and second circulating pipe all runs through cauldron body and annular pipe intercommunication, and the other end of first circulating pipe and second circulating pipe all communicates with cauldron body lower part surface.

As a further description of the above technical solution: and check valves are arranged on the surfaces of the lower parts of the first circulating pipe and the second circulating pipe.

As a further description of the above technical solution: the surface of the lower part of the kettle body is communicated with an air inlet pipe, and a manual valve is arranged on the surface of the air inlet pipe.

As a further description of the above technical solution: the material sucking covers are provided with two, and the ends, far away from the rubber disc, of the two material sucking covers are communicated with the communicating pipe.

As a further description of the above technical solution: the cauldron body surface is provided with control panel, and control panel's output respectively with first air pump, motor, liquid pump and second air pump electric connection.

The utility model discloses following beneficial effect has:

the utility model discloses in, open the liquid pump through control panel, make the hose, the inside formation negative pressure suction of eduction tube and communicating pipe, make the internal upper strata liquid of cauldron (both azodiisobutyronitrile) permeate through the through-hole on rubber disc surface and inhale communicating pipe, lead to in the corresponding storage household utensils by hose and eduction tube until the internal upper strata liquid of cauldron, make the internal upper strata liquid of cauldron can in time remove, reduce the condition that causes partial azodiisobutyronitrile to decompose because of the perchlorination, also can avoid excessive azodiisobutyronitrile to influence the condition of stirring efficiency, be favorable to azodiisobutyronitrile's continuous production, and flange joint's hose between eduction tube and the communicating pipe can carry out the adaptability according to the reaction liquid level and stretch out and draw back, guarantee the continuous contact of rubber disc and upper strata liquid level, be favorable to the absorption of upper strata liquid;

the utility model discloses in, through set up the ring pipe on the internal side upper portion of cauldron, and the ring pipe respectively with first circulating pipe and second circulating pipe, open first air pump and second air pump through control panel, make and remain chlorine on the internal side upper portion of cauldron and inhale first circulating pipe and second circulating pipe by the gas pocket of ring pipe inner circle, make first circulating pipe and second circulating pipe let in the reaction liquid of the cauldron body with inspiratory chlorine once more, increase the reaction efficiency of chlorine and reaction liquid, avoid the chlorine that lets in and the circumstances that the contact of reaction liquid is insufficient and produce a large amount of waste gas.

Drawings

FIG. 1 is a schematic view of the internal structure of a kettle of a continuous azodiisobutyronitrile production device of the present invention;

FIG. 2 is a schematic view of a material suction cover structure of a continuous azodiisobutyronitrile production apparatus of the present invention;

FIG. 3 is a schematic view of the structure of a circular pipe of the continuous azodiisobutyronitrile production apparatus of the present invention.

Illustration of the drawings:

1. a kettle body; 2. an annular tube; 3. a first circulation pipe; 4. a first air pump; 5. a stirring paddle; 6. a discharge outlet; 7. a feed inlet; 8. a motor; 9. a hose; 10. a liquid pump; 11. a draft tube; 12. a second circulation pipe; 13. a communicating pipe; 14. a second air pump; 15. a material suction cover; 16. a control panel; 17. a rubber disc; 18. a through hole; 19. and (4) air holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

According to the embodiment of the utility model, a continuous production device of azo-bis-isobutyronitrile is provided.

Referring to the drawings and the detailed description, the present invention will be further explained, as shown in fig. 1-3, a continuous production apparatus for azobisisobutyronitrile according to an embodiment of the present invention comprises a kettle body 1, a motor 8 is tightly mounted on the top surface of the kettle body 1, the output end of the motor 8 penetrates through the kettle body 1 and is rotatably connected with a stirring paddle 5, a ring pipe 2 is disposed on the periphery of the upper portion of the stirring paddle 5, the inner ring of the ring pipe 2 is provided with an air hole 19, a feed inlet 7 is disposed on the top surface of the kettle body 1 on one side of the motor 8, a draft pipe 11 is communicated with the top surface of the kettle body 1 on the other side of the motor 8, one end of the draft pipe 11 penetrates through the kettle body 1 and is flange-connected with a hose 9, one end of the hose 9 is flange-connected with a communicating pipe 13, the surface of the communicating pipe 13 is communicated with a draft cover 15, the bottom surface of the draft cover 15 is glued and connected with a rubber disc 17, the surface of the rubber disc 17 penetrates through the draft cover 15 and is provided with a through hole 18, the surface of the draft tube 11 is provided with a liquid pump 10, the bottom surface of the kettle body 1 is communicated with the discharge port 6, the surface of the discharge port 6 is provided with a valve, the liquid pump 10 is opened through a control panel 16, so that negative pressure suction is formed inside the hose 9, the draft tube 11 and the communicating tube 13, and the upper layer liquid (azodiisobutyronitrile) in the kettle body 1 is sucked into the communicating tube 13 through a through hole 18 on the surface of a rubber disc 17 (the corrosion-resistant rubber disc 17 can suspend the suction cover 15 on the liquid level of the reaction liquid) until the upper layer liquid in the kettle body 1 is guided into a corresponding storage vessel through the hose 9 and the draft tube 11, so that the upper layer liquid in the kettle body 1 can be removed in time, the condition that partial azodiisobutyronitrile is decomposed due to over-chlorination is reduced, the condition that the excessive azodiisobutyronitrile affects the stirring efficiency can be avoided, the continuous production of the azodiisobutyronitrile is facilitated, and the hose 9 connected by flanges between the draft tube 11 and the communicating tube 13 can be adaptively extended according to the liquid level of the reaction liquid Shrinking (namely, the length of the hose 9 is long enough to enable the material suction cover 15 to be continuously in a state of absorbing the liquid level of the reaction liquid), ensuring that the rubber disc 17 is continuously contacted with the liquid level of the upper layer liquid, and being beneficial to absorbing the upper layer liquid, wherein the motor 8 is started through the control panel 16, so that the output end of the motor 8 drives the stirring paddle 5 to rotate, and the reactants are conveniently and uniformly mixed;

in one embodiment, a first circulation pipe 3 is provided on one side surface of the autoclave body 1, a first air pump 4 is installed on the surface of the first circulation pipe 3, a second circulation pipe 12 is provided on one side surface of the autoclave body 1, and the surface of the second circulating pipe 12 is provided with a second air pump 14, one end of the first circulating pipe 3 and one end of the second circulating pipe 12 penetrate through the kettle body 1 and are communicated with the annular pipe 2, and the other ends of the first circulating pipe 3 and the second circulating pipe 12 are both communicated with the surface of the lower part of the kettle body 1, the first air pump 4 and the second air pump 14 are started through the control panel 16, so that chlorine gas remained at the upper part of the inner side of the kettle body 1 is sucked into the first circulating pipe 3 and the second circulating pipe 12 through the air holes 19 at the inner ring of the annular pipe 2, the first circulating pipe 3 and the second circulating pipe 12 can introduce the sucked chlorine into the reaction liquid of the kettle body 1 again, so that the reaction efficiency of the chlorine and the reaction liquid is increased, and the condition that the introduced chlorine is not fully contacted with the reaction liquid to generate a large amount of waste gas is avoided.

In one embodiment, the lower surfaces of the first circulation pipe 3 and the second circulation pipe 12 are each provided with a check valve by which the reaction liquid can be prevented from flowing backward.

In one embodiment, the surface of the lower part of the kettle body 1 is communicated with an air inlet pipe, the surface of the air inlet pipe is provided with a manual valve, chlorine is convenient to enter through the air inlet pipe, and the manual valve is convenient to stop the chlorine in the chlorine entering process.

In one embodiment, two suction covers 15 are provided, and one ends of the two suction covers 15 far away from the rubber disc 17 are both communicated with the communicating pipe 13, so that the suction efficiency of the supernatant liquid can be increased through the two suction covers 15.

In one embodiment, a control panel 16 is disposed on an outer surface of the autoclave body 1, an output end of the control panel 16 is electrically connected to the first air pump 4, the motor 8, the liquid pump 10 and the second air pump 14, respectively, the control panel 16 is convenient to control the opening of the first air pump 4, the motor 8, the liquid pump 10 and the second air pump 14, and a control circuit of the control panel 16 can be implemented by simple programming of a person skilled in the art, which belongs to common knowledge in the art, and is only used without modification, so that a detailed description of a control mode and circuit connection is omitted.

The working principle is as follows:

when the device is used, the device is moved to a proper position, a power supply is switched on, then chlorine gas is introduced into the kettle body 1 through the air inlet pipe (the air inlet pipe is not marked in the figure, the specific installation position of the air inlet pipe is one side of the first circulating pipe 3 on the outer surface of the kettle body 1), the liquid pump 10 is started through the control panel 16, negative pressure suction is formed inside the hose 9, the suction pipe 11 and the communicating pipe 13, upper layer liquid (namely azodiisobutyronitrile) in the kettle body 1 is sucked into the communicating pipe 13 through the through hole 18 on the surface of the rubber disc 17 (the corrosion-resistant rubber disc 17 can suspend the suction cover 15 on the liquid surface of reaction liquid) until the upper layer liquid in the kettle body 1 is led into a corresponding storage vessel through the hose 9 and the suction pipe 11, the upper layer liquid in the kettle body 1 can be removed in time, the condition that partial azodiisobutyronitrile is decomposed due to overchlorination is reduced, and the condition that the stirring efficiency is influenced by the excessive azodiisobutyronitrile can be avoided, the continuous production of azodiisobutyronitrile is facilitated, the hose 9 connected between the suction pipe 11 and the communicating pipe 13 through the flange can be adaptively stretched according to the liquid level of the reaction liquid (namely, the length of the hose 9 is long enough to enable the suction cover 15 to be continuously in a state of adsorbing the liquid level of the reaction liquid), the continuous contact of the rubber disc 17 and the liquid level of the upper layer is guaranteed, the suction of the upper layer is facilitated, meanwhile, the first air pump 4 and the second air pump 14 are started through the control panel 16, chlorine gas remained on the upper portion of the inner side of the kettle body 1 is enabled to be sucked into the first circulating pipe 3 and the second circulating pipe 12 through the air holes 19 in the inner ring of the annular pipe 2, the sucked chlorine gas is enabled to be introduced into the reaction liquid of the kettle body 1 again through the first circulating pipe 3 and the second circulating pipe 12, the reaction efficiency of the chlorine gas and the reaction liquid is increased, and the condition that a large amount of waste gas is generated due to insufficient contact of the introduced chlorine gas and the reaction liquid is avoided.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a continuous production device of azobisisobutyronitrile, includes the cauldron body (1), its characterized in that: the top surface of the kettle body (1) is tightly provided with a motor (8), the output end of the motor (8) penetrates through the kettle body (1) and is connected with a stirring paddle (5) in a rotating manner, the periphery of the upper part of the stirring paddle (5) is provided with a ring pipe (2), the inner ring of the ring pipe (2) is provided with an air hole (19), one side of the motor (8) is positioned on the top surface of the kettle body (1) and is provided with a feed inlet (7), the other side of the motor (8) is positioned on the top surface of the kettle body (1) and is communicated with a draft pipe (11), one end of the draft pipe (11) penetrates through the kettle body (1) and is connected with a hose (9) in a flange manner, one end of the hose (9) is connected with a communicating pipe (13) in a flange manner, the surface of the communicating pipe (13) is communicated with a draft cover (15), the bottom surface of the draft cover (15) is connected with a rubber disc (17) in a gluing manner, the surface of the rubber disc (17) penetrates through the draft cover (15) and is provided with a through hole (18), the surface mounting of draft tube (11) has liquid pump (10), the bottom surface intercommunication of the cauldron body (1) has bin outlet (6), and the surface mounting of bin outlet (6) has the valve.

2. The continuous production apparatus of azobisisobutyronitrile according to claim 1, wherein: cauldron body (1) side surface is provided with first circulating pipe (3), and the surface mounting of first circulating pipe (3) has first air pump (4), cauldron body (1) side surface is provided with second circulating pipe (12), and the surface mounting of second circulating pipe (12) has second air pump (14), the one end of first circulating pipe (3) and second circulating pipe (12) all runs through cauldron body (1) and annular pipe (2) intercommunication, and the other end of first circulating pipe (3) and second circulating pipe (12) all with cauldron body (1) lower part surface intercommunication.

3. The continuous production apparatus of azobisisobutyronitrile according to claim 2, wherein: and check valves are arranged on the surfaces of the lower parts of the first circulating pipe (3) and the second circulating pipe (12).

4. The continuous production apparatus of azobisisobutyronitrile according to claim 1, wherein: the surface of the lower part of the kettle body (1) is communicated with an air inlet pipe, and a manual valve is arranged on the surface of the air inlet pipe.

5. The continuous production apparatus of azobisisobutyronitrile according to claim 1, wherein: two material sucking covers (15) are arranged, and one ends, far away from the rubber disc (17), of the two material sucking covers (15) are communicated with the communicating pipe (13).

6. The continuous production apparatus of azobisisobutyronitrile according to claim 2, wherein: the outer surface of the kettle body (1) is provided with a control panel (16), and the output end of the control panel (16) is respectively electrically connected with the first air pump (4), the motor (8), the liquid pump (10) and the second air pump (14).