Chlorination reaction device for preparing quinclorac
By setting up heat exchange tubes and chlorine supply channels in the reactor and utilizing the design of stirring blades, uniform heating and chlorine gas distribution were achieved, solving the problems of local overheating and slow reaction rate in the preparation of dichloroquinoline acid, and realizing a more efficient chlorination reaction.
Patent Information
- Application Number
- CN202520065567.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-13
AI Technical Summary
Existing reaction vessels are prone to localized overheating during the preparation of dichloroquinoline acid, and the reaction rate is relatively slow.
Uniform heating is achieved by setting up heat exchange tubes, and chlorine supply channels and gas outlets are opened on the stirring blades. The stirring shaft drives the chlorine gas to be evenly distributed in the material, and the addition of turbulence holes promotes bubble collapse to accelerate the reaction rate.
This avoids the risk of localized overheating, significantly accelerates the chlorination reaction rate, and improves reaction efficiency.
Smart Images
Figure CN223683507U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of reaction kettle, concretely relates to a chlorination reaction device for quinclorac preparation. BACKGROUND
[0002] Quinclorac is a hormone type quinoline carboxylic acid herbicide. Molecular formula C10H5Cl2NO2. Under the catalysis of ferric chloride and sulfone, o-nitrotoluene is chlorinated at 35~45 DEG C to obtain a mixture of chlorinated o-nitrotoluene, and 3-chloro-2-methyl nitrobenzene is separated out by refining; the product is reduced by hydrogenation to obtain 3-chloro-2-toluidine. Quinclorac is obtained by Surup cyclization, chlorination, oxidation and hydrolysis.
[0003] In the preparation process of quinclorac, a reaction kettle is often used for chlorination reaction, but the reaction kettle is heated by electric heating, which can easily cause local overheating. In order to avoid local overheating and speed up the reaction rate, a chlorination reaction device for quinclorac preparation is provided to solve the problem. SUMMARY
[0004] The utility model aims at providing a chlorination reaction device for quinclorac preparation to solve the above problems in the prior art.
[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a chlorination reaction device for quinclorac preparation, comprising: a reaction kettle body, a heat exchange pipe is arranged in the reaction kettle body, a kettle cover is threadedly connected to the top of the reaction kettle body, a motor is installed on the kettle cover, the output shaft of the motor penetrates into the reaction kettle body and is fixedly connected with a stirring shaft, two groups of stirring blades are fixedly connected outside the stirring shaft, the bottom of the stirring shaft is fixedly connected to one end of a rotary joint, the other end of the rotary joint is fixedly connected with an air inlet pipe, the stirring shaft and the stirring blades are provided with a first chlorine supply channel and a second chlorine supply channel which are in communication, and a gas outlet is arranged on the lower side of the stirring blade and communicates with the second chlorine supply channel.
[0006] Further, a plurality of turbulence holes are arranged on the stirring blades.
[0007] Further, the fixed end of the rotary joint is installed in the reaction kettle body, and a second sealing ring is arranged between the rotary joint and the reaction kettle body.
[0008] Further, one water inlet pipe and one water outlet pipe are fixedly connected to the upper and lower ends of the side of the reaction kettle body, respectively, and the two ends of the heat exchange pipe are fixedly connected with the water inlet pipe and the water outlet pipe, respectively.
[0009] Further, the kettle cover is fixedly connected with a feeding pipe and an exhaust pipe which are communicated with the inside of the reaction kettle main body.
[0010] Further, the first sealing ring and the second sealing ring are rotary shaft lip-shaped sealing rings.
[0011] Further, the first sealing ring and the second sealing ring are rotary shaft lip-shaped sealing rings.
[0012] In the above technical solution, the chlorination reaction device for preparing quinclorac has the beneficial effects that:
[0013] The heat exchange pipe is arranged to uniformly heat the materials in the reaction kettle main body, so that the risk of local overheating is avoided, the first chlorine supply channel and the second chlorine supply channel are arranged, so that the chlorine gas is discharged into the reaction kettle main body from the gas outlet, and the chlorine gas is uniformly distributed in the materials along with the rotation of the stirring shaft and the stirring blades, so that the chlorination reaction rate is greatly accelerated.
[0014] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and are not intended to limit the present disclosure.
[0015] The present application provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0017] Figure 1 The structural schematic diagram provided by the embodiment of the present application is shown in the figure.
[0018] Figure 2 The sectional view provided by the embodiment of the present application is shown in the figure.
[0019] Figure 3 The provided by the embodiment of the present application is shown in the figure. Figure 2 The enlarged view of A in the figure.
[0020] Explanation of reference signs:
[0021] 1, reactor main body;11, discharge pipe;2, kettle cover;21, feed pipe;22, exhaust pipe;3, motor;31, first sealing ring;4, rotary joint;41, second sealing ring;5, heat exchange pipe;51, water inlet pipe;52, water outlet pipe;6, stirring shaft;61, first chlorine supply channel;7, stirring blade;71, second chlorine supply channel;72, spoiler hole;73, gas outlet;8, gas inlet pipe. DETAILED DESCRIPTION
[0022] To make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present disclosure.
[0023] Please refer to Figures 1-3 A chlorine reaction device for preparing quinclorac comprises a reactor main body 1, the reactor main body 1 is internally provided with a heat exchange pipe 5, the top of the reactor main body 1 is threadedly connected with a kettle cover 2, the kettle cover 2 is installed with a motor 3, the output shaft of the motor 3 penetrates into the reactor main body 1 and is fixedly connected with a stirring shaft 6, the stirring shaft 6 is fixedly connected with two groups of stirring blades 7, the bottom of the stirring shaft 6 is fixedly connected with one end of a rotary joint 4, the other end of the rotary joint 4 is fixedly connected with a gas inlet pipe 8, the stirring shaft 6 and the stirring blades 7 are internally provided with a first chlorine supply channel 61 and a second chlorine supply channel 71 which are communicated with each other, and the lower side of the stirring blades 7 is provided with a gas outlet 73 which is communicated with the second chlorine supply channel 71.
[0024] Specifically, the gas inlet pipe 8 guides chlorine into the first chlorine supply channel 61 through the rotary joint 4, and then the chlorine is injected into the material in the reactor main body 1 after passing through the second chlorine supply channel 71 and the gas outlet 73, a one-way valve is arranged in the gas outlet 73, so that the chlorine can be guided into the reactor main body 1 from the second chlorine supply channel 71, and the material in the reactor main body 1 cannot enter the spoiler hole 72, the rotary joint 4 is a commercially available product, its installation mode and the mode and method of connecting the stirring shaft 6 and the gas inlet pipe 8, and the working principle are all common knowledge known to those skilled in the art, and will not be explained here, the bottom side of the reactor main body 1 is fixedly connected with a discharge pipe 11 for discharging the reaction material.
[0025] The heat exchange pipe 5 is arranged to uniformly heat the material in the reactor main body 1, thereby avoiding the risk of local overheating, the first chlorine supply channel 61 and the second chlorine supply channel 71 are arranged, so that the chlorine is discharged into the reactor main body 1 from the gas outlet 73, and the chlorine is uniformly distributed in the material as the stirring shaft 6 rotates with the stirring blades 7, thereby greatly accelerating the rate of chlorination reaction.
[0026] Further, a plurality of turbulence holes 72 are formed on the stirring blade 7.
[0027] Specifically, the liquid phase chlorination reaction is carried out in the reaction kettle body 1, and the plurality of turbulence holes 72 are formed on the stirring blade 7, so that when the stirring shaft 6 drives the stirring blade 7 to stir in the reaction kettle body 1, the turbulence capacity and the number of bubbles are increased, and the chlorine gas is promoted to be dissolved in the process of bubble generation and rupture, thereby accelerating the reaction rate of the chlorination reaction.
[0028] Further, the fixed end of the rotary joint 4 is installed in the reaction kettle body 1, the second sealing ring 41 is arranged between the rotary joint 4 and the reaction kettle body 1, the first sealing ring 31 is arranged between the stirring shaft 6 and the kettle cover 2, and the first sealing ring 31 and the second sealing ring 41 are rotary shaft lip-shaped sealing rings.
[0029] Specifically, the first sealing ring 31 and the second sealing ring 41 are arranged to ensure that the reaction kettle body 1 is in a sealed state with the outside world, the second sealing ring 41 is arranged outside the movable end of the rotary joint 4, that is, the end connected with the stirring shaft 6, so as to ensure that the stirring shaft 6 and the movable end of the rotary joint 4 can relatively rotate, and the rotary shaft lip-shaped sealing ring is a commercially available product, and its installation mode and sealing principle are common knowledge familiar to those skilled in the art, and will not be explained here.
[0030] Further, the upper end and the lower end of the side of the reaction kettle body 1 are respectively fixedly connected with a water inlet pipe 51 and a water outlet pipe 52, and the two ends of the heat exchange pipe 5 are respectively fixedly connected with the water inlet pipe 51 and the water outlet pipe 52.
[0031] Specifically, the connection mode of the end of the heat exchange pipe 5 with the water inlet pipe 51 or the water outlet pipe 52 adopts welding, and the heat exchange pipe 5 is subjected to anticorrosion treatment.
[0032] Further, the kettle cover 2 is fixedly connected with a feeding pipe 21 and an exhaust pipe 22 which are communicated with the inside of the reaction kettle body 1.
[0033] Specifically, the feeding pipe 21 is provided with a cover, and after feeding is completed, the feeding pipe 21 is covered, and the exhaust pipe 22 is communicated with a tail gas treatment device for collecting the gas generated in the chlorination reaction process, so as to avoid air pollution by the tail gas.
[0034] In the utility model, reference Figures 1 to 3First, the material, catalyst, which participates in the reaction, is added into the reaction kettle main body 1, the cover of the feeding pipe 21 is closed tightly, then warm water is introduced into the heat exchange pipe 5, so that the temperature in the reaction kettle main body 1 is maintained in the optimum temperature range interval required by the reaction, the motor 3 is started, the motor 3 drives the stirring shaft 6, so that the stirring blade 7 starts to stir the material in the reaction kettle main body 1, and chlorine is introduced into the reaction kettle main body 1 through the air inlet pipe 8, in the movement process of the stirring blade 7, the chlorine is uniformly introduced into the reaction kettle main body 1, and the outlet of the gas outlet 73 is downward, so that the chlorine introduced into the reaction kettle main body 1 will move upward, and is further scattered by the stirring blade 7, with the breakage of a large number of bubbles generated in the rotating process of the turbulence hole 72, the chlorine is further promoted to be dissolved, and the reaction rate of the chlorination reaction is accelerated.
[0035] The above only describes certain exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the present application.
Claims
1. A chlorination reaction apparatus for preparing quinclorac, comprising: The utility model relates to a reaction kettle body (1), its characterized in be: reaction kettle body (1) be provided with heat exchange pipe (5), the top of reaction kettle body (1) is connected with kettle cover (2) in screw thread, the motor (3) of kettle cover (2) is installed, the output shaft of motor (3) is fixedly connected with stirring shaft (6) in reaction kettle body (1), the outside fixed connection of stirring shaft (6) has two groups of stirring vane (7), the bottom of stirring shaft (6) is fixedly connected in one end of swivel joint (4), the other end of swivel joint (4) is fixedly connected with air inlet pipe (8), the first chlorine supply channel (61) of mutual communication and second chlorine supply channel (71) are seted up in stirring shaft (6) with stirring vane (7) and the lower side of stirring vane (7) is seted up with the air outlet (73) of second chlorine supply channel (71) intercommunication.
2. The device for preparing quinclorac by chlorination reaction according to claim 1, characterized in that, A plurality of turbulence holes (72) are formed in the stirring vane (7).
3. The device for preparing quinclorac by chlorination reaction according to claim 2, characterized in that, The fixed end of the swivel joint (4) is installed in the reaction kettle body (1), and the second sealing ring (41) is arranged between the swivel joint (4) and the reaction kettle body (1).
4. The device for preparing quinclorac by chlorination reaction according to claim 3, characterized in that, The upper and lower ends of the side of the reaction kettle body (1) are fixedly connected with the water inlet pipe (51) and the water outlet pipe (52), respectively, and the two ends of the heat exchange pipe (5) are fixedly connected with the water inlet pipe (51) and the water outlet pipe (52), respectively.
5. The device for preparing quinclorac by chlorination reaction according to claim 1, wherein The kettle cover (2) is fixedly connected with the feed pipe (21) and the exhaust pipe (22) which communicate with the inside of the reaction kettle body (1).
6. The device for preparing quinclorac by chlorination reaction according to claim 3, wherein The first sealing ring (31) is arranged between the stirring shaft (6) and the kettle cover (2).
7. The device for preparing quinclorac by chlorination reaction according to claim 6, characterized in that, The first sealing ring (31) and the second sealing ring (41) are rotary shaft lip-shaped sealing rings.