Gas circulation distribution device

Abstract

The utility model discloses a gas circulation distribution device, which is applied to branching reaction of butadiene rubber in a reaction kettle and comprises a pressurizing component, a Venturi tube and a distributor. The pressurizing assembly is provided with an input end and an output end; the venturi tube is provided with an input end and an output end, the input end of the venturi tube is connected with the reaction kettle, and the output end of the venturi tube is connected with the input end of the pressurizing assembly. According to the gas circulation distribution device, a gas modifier and nitrogen are mixed and pressurized through the venturi tube with the side branch port, and are conveyed into the reaction kettle again, so that the gas pressure balance in the kettle is favorably kept when the gas modifier is conveyed into the reaction kettle; and the distributor can directly input the mixed gas containing the gas modifier to the bottom of the reaction kettle, so that the gas modifier and the material can be more sufficiently mixed, the branching modification effect of butadiene rubber is better, the addition of the modifier is convenient to control, the operation is more convenient, and better practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of modification of cis-butadiene rubber, in particular to a gas circulation distribution device. Background Art

[0002] As an important synthetic rubber, rare earth cis-butadiene rubber has a wide application prospect in the fields of tire manufacturing, auto parts, etc. due to its characteristics such as high molecular weight, regular structure, excellent flex fatigue resistance, wear resistance and low rolling resistance. However, the molecular chain of rare earth cis-butadiene rubber is highly linear, resulting in high viscosity of its rubber solution, low mass transfer and heat transfer efficiency, difficult transportation and spraying of glue, obvious pre-vulcanization in the rubber mixing and processing process, too high increase in the Mooney viscosity of the mixed rubber, and poor cold flow resistance, which is not conducive to the storage and transportation of rubber products.

[0003] To solve the above problems, researchers have developed a variety of long-chain branching modification technologies to reduce the linear degree of the molecular chain of rare earth cis-butadiene rubber by introducing a branched structure, thereby reducing the viscosity of the rubber solution and improving the processing performance and cold flow resistance. At present, in the process of branching modification of cis-butadiene rubber through a continuous reactor, a modifier for branching modification needs to be added to the continuous reactor. However, in the prior art, the method of adding the modifier to the reactor is not convenient to control, and the mixing effect of the modifier and the monomer of the material in the reactor is not good. Therefore, we urgently need a gas circulation distribution device to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a gas circulation distribution device, which is convenient to control the addition of the modifier in the branching reaction and improve the mixing effect of the modifier and the monomer of the material.

[0005] The purpose of the utility model is realized by adopting the following technical solutions:

[0006] A gas circulation distribution device, the gas circulation distribution device includes:

[0007] A reaction kettle, which is used for the branching reaction of cis-butadiene rubber;

[0008] A pressurizing component, which has an input end and an output end;

[0009] A Venturi tube, which has an input end and an output end. The input end of the Venturi tube is used to connect the reaction kettle, the output end of the Venturi tube is used to connect the input end of the pressurizing component, and the Venturi tube has a side branch port located between the input end and the output end for inputting a gaseous modifier into the Venturi tube; and

[0010] A distributor, the distributor having an input end and an output end, the distributor being configured to pass through the wall of the reactor, the input end and the output end of the distributor being located inside and outside the reactor respectively, the input end of the distributor being connected to the output end of the pressurization assembly, the output end of the distributor being configured to be arranged at the inner bottom of the reactor, the output end of the distributor being arranged as a spiral circular coiled pipe on the same horizontal plane, and air holes being arranged at intervals on the circular coiled pipe;

[0011] Wherein, the pressurization assembly is configured to pressurize the gas inside the reactor and the gaseous modifier and then transport them through the air holes of the distributor into the reactor.

[0012] Preferably, the air holes are arranged at equal intervals along the bottom of the pipe body of the circular coiled pipe, and the air holes are arranged obliquely downward and outward.

[0013] Preferably, the reactor includes a reactor body and a reactor cover, and the reactor body and the reactor cover are detachably connected;

[0014] The distributor extends into the bottom of the reactor from the bottom of the reactor body, or the distributor passes through the reactor cover and extends closely along the inner side wall of the reactor body into the bottom of the reactor;

[0015] A seventh control valve is installed at one end of the distributor located outside the reactor body;

[0016] The reactor cover is provided with an elbow pipe communicated with the input end of the Venturi tube.

[0017] Preferably, a buffer unit is arranged between the Venturi tube and the distributor, and the buffer unit includes:

[0018] A buffer tank, the interior of the buffer tank respectively having an inlet pipe and an outlet pipe, a buffer liquid being contained in the buffer tank, one end of the inlet pipe located outside the buffer tank being connected to the elbow pipe, one end of the inlet pipe located inside the buffer tank being located below the liquid level of the buffer liquid, one end of the outlet pipe connected to the buffer tank being located above the liquid level of the buffer liquid, and the other end of the outlet pipe being connected to the input end of the Venturi tube; and / or,

[0019] A first discharge port is arranged at the bottom of the buffer tank, and a first valve is installed on the first discharge port; and / or,

[0020] A first control valve is installed on the inlet pipe;

[0021] A sixth control valve is installed on the outlet pipe.

[0022] Preferably, the buffer unit further includes a protection module, and the protection module includes:

[0023] A protective branch pipe, with both ends of the protective branch pipe communicating with the inlet pipes on both sides of the first control valve respectively;

[0024] A back pressure valve, with the back pressure valve installed on the protective branch pipe;

[0025] A second control valve, with the second control valve installed on the protective branch pipe on one side of the input end of the back pressure valve;

[0026] A first fine adjustment valve, with the first fine adjustment valve installed on the protective branch pipe on one side of the output end of the back pressure valve;

[0027] A third control valve, with the third control valve installed on the inlet pipe behind the protective branch pipe along the gas flow direction;

[0028] An emptying pipe, with the emptying pipe installed on the buffer tank, and a fourth control valve installed on the emptying pipe.

[0029] Preferably, the reaction kettle includes a stirring unit, and the stirring unit includes:

[0030] A driving component, with the driving component arranged on the kettle cover;

[0031] A stirring component, with the stirring component being a stirring shaft with blades, the stirring shaft being located inside the kettle body, and the top end of the stirring shaft being fixedly connected to the output end of the driving component;

[0032] Wherein, the circular coiled pipe of the distributor is located below the stirring shaft.

[0033] Preferably, the reaction kettle further includes a feeding unit, and the feeding unit includes:

[0034] A feeding tank, with the feeding tank having a top opening and a bottom pipe, the top opening being used for adding monomer materials into the feeding tank, and the bottom pipe being inserted into the reaction kettle for adding the monomer materials in the feeding tank into the reaction kettle;

[0035] A solvent pipe, with the solvent pipe communicating with the feeding tank for transporting the solvent into the feeding tank and mixing it with the monomer materials;

[0036] A pressure regulating pipe, with the pressure regulating pipe being of a T shape, one end of the pressure regulating pipe communicating with the feeding tank, and the pressure regulating pipe being used for regulating the internal air pressure of the feeding tank to press the mixture of the solvent and the monomer materials into the reaction kettle;

[0037] A fifth control valve, with the fifth control valve installed on the bottom pipe for controlling the on-off of the bottom pipe.

[0038] Preferably, a second fine adjustment valve is installed on the pipe body of the bottom pipe located outside the reaction kettle, and the second fine adjustment valve is located between the fifth control valve and the reaction kettle.

[0039] Preferably, the reactor further includes a temperature control unit for regulating the temperature of the reactor. The temperature control unit includes:

[0040] A temperature control box with the reactor body located inside. A heat transfer medium is contained inside the temperature control box;

[0041] A heating component installed on the temperature control box for heating the heat transfer medium inside the temperature control box;

[0042] A cooling component installed on the temperature control box for cooling the heat transfer medium inside the temperature control box.

[0043] Preferably, a replenishment port is provided on the side wall near the top of the temperature control box, a drain port is provided at the bottom of the temperature control box, and a balance nozzle is also provided on the side wall near the top of the temperature control box for regulating the internal air pressure of the temperature control box to allow the heat transfer medium to enter the temperature control box through the replenishment port; and / or,

[0044] The outside of the temperature control box is covered with a heat insulation layer.

[0045] Compared with the prior art, the beneficial effects of the present utility model at least include:

[0046] The gas circulation distribution device mixes and pressurizes the gas modifier and nitrogen through a Venturi tube with a side branch port and then re-transports them into the reactor. When transporting the gas modifier into the reactor, it helps to maintain the air pressure balance inside the reactor, and the distributor can directly input the mixed gas containing the gas modifier to the bottom of the reactor, enabling the gaseous modifier to be more fully mixed with the material, resulting in a better branching modification effect for cis-butadiene rubber, facilitating the control of the addition of the modifier, making the operation more convenient, and having better practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a schematic structural diagram of the gas circulation distribution device provided by an embodiment of the present utility model;

[0048] Figure 2 is a schematic structural diagram after disassembling the reactor according to an embodiment of the present utility model;

[0049] Figure 3 is a schematic structural diagram of the reactor provided by an embodiment of the present utility model;

[0050] Figure 4 is the present utility model Figure 3 a partial structural diagram of the reactor in;

[0051] Figure 5 is the present utility model Figure 3Schematic structural diagram of the feeding unit in the middle

[0052] Reference numerals: 1, Venturi tube; 11, Side branch port; 2, Distributor; 21, Seventh control valve; 31, Kettle body; 32, Kettle cover; 321, Elbow pipe; 4, Buffer tank; 41, Inlet pipe; 411, First control valve; 412, Third control valve; 42, Exhaust pipe; 421, Sixth control valve; 43, First discharge port; 44, Protection branch pipe; 441, Back pressure valve; 442, Second control valve; 443, First fine adjustment valve; 45, Drain pipe; 451, Fourth control valve; 50, Driving motor; 51, Stirring shaft; 6, Feed tank; 61, Top port; 62, Bottom pipe; 621, Fifth control valve; 622, Second fine adjustment valve; 63, Solvent pipe; 631, Eighth control valve; 64, Pressure regulating pipe; 641, Ninth control valve; 642, Tenth control valve; 7, Temperature control box; 71, Heating component; 72, Cooling component; 73, Supplementary port; 731, Expander; 74, Drain port; 75, Balance nozzle; 76, Heat preservation layer; 8, Booster pump. Detailed implementation manners

[0053] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this utility model will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus their repetitive description will be omitted.

[0054] In this utility model, the words expressing position and direction are described with reference to the accompanying drawings as examples, but can be changed according to needs, and all changes made are included in the protection scope of this utility model.

[0055] Referring to Figures 1 to 5 , this application provides a gas circulation distribution device, and the gas circulation distribution device includes: a reaction kettle, a pressurization assembly, a Venturi tube 1, and a distributor 2.

[0056] Specifically, the reaction kettle is used for the branching reaction of cis-butadiene rubber and provides a place for the branching reaction of cis-butadiene rubber.

[0057] The pressurization assembly has an input end and an output end; the pressurization assembly is preferably a gas booster pump 8, which is used to provide the power to re-transport the nitrogen mixed with the gaseous modifier into the reaction kettle.

[0058] The Venturi tube 1 has an input end and an output end. The input end of the Venturi tube 1 is used to connect to the reaction kettle, and the output end of the Venturi tube 1 is used to connect to the input end of the pressurizing component. The Venturi tube 1 has a side branch port 11 located between the input end and the output end, which is used to input a gaseous modifier into the Venturi tube 1. The Venturi tube 1 is made of S31603 stainless steel with a polytetrafluoroethylene film lined on the inner surface, and the side branch port 11 and the Venturi tube 1 are preferably made by an integral molding method.

[0059] The distributor 2 has an input end and an output end. The distributor 2 is used to pass through the kettle wall of the reaction kettle. The input end and the output end of the distributor 2 are respectively located inside and outside the reaction kettle. The distributor 2 is preferably made of a metal tube with an inner diameter of 10 mm and a polytetrafluoroethylene anti-corrosion film lined on both the inner and outer surfaces. The input end of the distributor 2 is connected to the output end of the pressurizing component, and the output end of the distributor 2 is used to be arranged at the inner bottom of the reaction kettle. The output end of the distributor 2 is set as a spiral circular coiled pipe at the same horizontal plane, and air holes (not shown) are arranged at intervals on the circular coiled pipe. As a preferred method, the air holes are arranged at equal intervals along the bottom of the pipe body of the circular coiled pipe, and the air holes are inclined downward and outward. Among them, the air holes are preferably arranged at intervals of 5 mm, the inner diameter of the air holes is preferably 1 mm, and the axis of the air holes is preferably inclined downward and outward at an angle of 45° with the vertical direction.

[0060] It should be noted that the air holes are inclined downward and outward, and the direction towards the kettle wall of the reaction kettle with the spiral center of the circular coiled pipe as the base point is the outer direction.

[0061] Among them, the pressurizing component is used to pressurize the gas inside the reaction kettle and the gaseous modifier and then transport them into the reaction kettle through the air holes of the distributor 2. The gas inside the reaction kettle is a mixed gas, where the mixed gas is mainly nitrogen, and also includes a small amount of n-hexane, butadiene, and sulfur dichloride gas, and may also include a small amount of the solvent inside the reaction kettle.

[0062] Thus, this gas circulation and distribution device mixes and pressurizes the gas modifier and nitrogen through the Venturi tube 1 with the side branch port 11 and then re-transports them into the reaction kettle, which helps to maintain the air pressure balance inside the kettle when transporting the gas modifier into the reaction kettle. And the distributor 2 can directly input the mixed gas containing the gas modifier to the bottom of the reaction kettle, which can make the gaseous modifier and the material mix more fully, make the branching modification effect of cis-butadiene rubber better, and is convenient for controlling the addition of the modifier, with more convenient operation and better practicability.

[0063] In a specific implementation manner, refer to Figure 1 and Figure 3, the reactor includes a reactor body 31 and a reactor cover 32, and the reactor body 31 and the reactor cover 32 are detachably connected; the reactor is preferably a cylindrical structure, and the connection part of the reactor body 31 and the reactor cover 32 is preferably provided with a flange extending outward. The reactor body 31 and the reactor cover 32 are preferably connected and fixed by bolts, and the bolts can be installed on the flange. Through holes for the bolts to be inserted are installed on the flange. The bolts pass through the through holes and cooperate with the matching nuts to realize the connection and assembly of the reactor body 31 and the reactor cover 32.

[0064] The distributor 2 extends into the bottom of the reactor from the bottom of the reactor body 31, or the distributor 2 passes through the reactor cover 32 and extends closely along the inner wall of the reactor body 31 into the bottom of the reactor. That is, the end of the distributor 2 located inside the reactor is at the bottom of the reactor, so that the mixed gas passing through the distributor 2 can be discharged from the bottom of the reaction solution in the reactor and bubble in the reaction solution, improving the sufficiency of the branching modification.

[0065] A seventh control valve 21 is installed at one end of the distributor 2 located outside the reactor body 31, which is used to control the on-off between the reactor and the pressurization assembly.

[0066] The reactor cover 32 is provided with an elbow 321 communicating with the input end of the venturi tube 1. The end of the elbow 321 connected to the reactor cover 32 is preferably close to the inner top wall of the reactor cover 32, so that the end of the elbow 321 located inside the reactor cover 32 is far from the reaction solution, reducing the amount of solution contained in the process of the pressurization assembly extracting the mixed gas from the reactor and ensuring the normal operation of the pressurization assembly.

[0067] In a specific embodiment, referring to Figure 1 and Figure 2 , a buffer unit is provided between the venturi tube 1 and the elbow 321. The buffer unit includes a buffer tank 4. The buffer tank 4 has an air inlet pipe 41 and an exhaust pipe 42 inside. A buffer liquid is contained in the buffer tank 4. One end of the air inlet pipe 41 located outside the buffer tank 4 is connected to the elbow 321, and one end of the air inlet pipe 41 located inside the buffer tank 4 is below the liquid level of the buffer liquid. One end of the exhaust pipe 42 connected to the buffer tank 4 is above the liquid level of the buffer liquid, preferably arranged close to the inner top wall of the buffer tank 4. The other end of the exhaust pipe 42 is connected to the input end of the venturi tube 1. Setting the buffer unit based on the buffer tank 4 between the venturi tube 1 and the reactor can buffer the intake air at the input end of the venturi tube 1, prevent the pressure of the mixed gas inside the reactor from being too high and damaging the pressurization assembly, and ensure the normal operation of the gas circulation device.

[0068] Among them, a first discharge port 43 is provided at the bottom of the buffer tank 4, and a first valve is installed on the first discharge port 43, so that the buffer liquid can be discharged from the buffer tank 4, which is convenient for replacing the buffer liquid in the later stage.

[0069] Among them, a first control valve 411 is installed on the intake pipe 41, which can control the mixed gas to directly enter the buffer tank 4 from the reaction kettle. A sixth control valve 421 is installed on the exhaust pipe 42, which can control the mixed gas entering the buffer tank 4 to be sucked into the Venturi tube 1 by the pressurization assembly and mixed with the gaseous modifier entering from the side branch port 11.

[0070] As a preferred mode, the buffer unit further includes a protection module, and the protection module includes: a protection branch pipe 44, a back pressure valve 441, a second control valve 442, a first fine adjustment valve 443, a third control valve 412, and a drain pipe 45. The two ends of the protection branch pipe 44 are respectively communicated with the intake pipe 41 on both sides of the first control valve 411, so that the mixed gas discharged from the reaction kettle can enter the buffer tank 4 through the first control valve 411 or through the intake pipe 41 behind the first control valve 411 after passing through the protection branch pipe 44. The back pressure valve 441 is installed on the protection branch pipe 44, and the air pressure that can pass through the protection branch pipe 44 can be controlled by setting the set pressure of the back pressure valve 441, so as to achieve the overpressure protection effect on the reaction kettle. The second control valve 442 is installed on the protection branch pipe 44 on the input end side of the back pressure valve 441 and is used to control the on-off of the protection branch pipe 44. The first fine adjustment valve 443 is installed on the protection branch pipe 44 on the output end side of the back pressure valve 441 and is used to cut off or adjust the gas flow in the protection branch pipe 44. The first fine adjustment valve 443 can preferably be a needle valve. The third control valve 412 is installed on the intake pipe 41 behind the protection branch pipe 44 along the gas flow direction and is used to control whether the buffer tank 4 receives the mixed gas from the reaction kettle conveyed by the first control valve 411 or the protection branch pipe 44. The drain pipe 45 is installed on the buffer tank 4, and a fourth control valve 451 is installed on the drain pipe 45. The on-off of the drain pipe 45 can be controlled through the fourth control valve 451. When the sixth control valve 421 is closed, the mixed gas entering the buffer tank 4 can be discharged through the drain pipe 45.

[0071] In this embodiment, when it is necessary to add a modifier into the reaction kettle, the first control valve 411, the third control valve 412, the sixth control valve 421, and the seventh control valve 21 are opened, the fourth control valve 451 is closed, the pressurization assembly is started, the mixed gas in the reaction kettle enters the buffer tank 4 through the elbow 321 and the intake pipe 41, and the mixed gas then enters the Venturi tube 1 from the buffer tank 4 through the exhaust pipe 42. In the Venturi tube 1, the mixed gas is mixed with the gaseous modifier entering from the side branch port 11, and then is conveyed to the reaction kettle through the pressurization assembly and the distributor 2. The distributor 2 performs bubbling through the air holes of the circular coiled pipe to carry out branching modification on the cis-butadiene rubber.

[0072] It should be noted that in the above process, the second control valve 442 and the first fine adjustment valve 443 are in the open state. When the air pressure in the reaction kettle is higher than the set pressure of the back pressure valve 441, the mixed gas will not only be transported through the first control valve 411, but also through the protection branch pipe 44. When there is no need to add a modifier in the reaction kettle, that is, when the gas distribution and circulation device is closed, the first control valve 411, the sixth control valve 421, and the seventh control valve 21 are closed, and the fourth control valve 451 is opened. When the air pressure in the reaction kettle is greater than the set pressure of the back pressure valve 441, the mixed gas enters the protection branch pipe 44 through the elbow pipe 321, and then enters the buffer tank 4 through the air inlet pipe 41. The mixed gas is then discharged through the exhaust pipe 45, so as to realize the automatic pressure reduction under the overpressure state of the reaction kettle and effectively protect the reaction kettle from damage.

[0073] In a specific embodiment, the reaction kettle includes a stirring unit, and the stirring unit includes: a driving component and a stirring component. The driving component is arranged on the kettle cover 32, and the driving component is preferably a driving motor 50; the stirring component is a stirring shaft 51 with blades, the stirring shaft 51 is located in the kettle body 31, and the top end of the stirring shaft 51 is fixedly connected to the output end of the driving component. The stirring shaft 51 can be driven to rotate through the driving component, so that the reaction solution in the kettle can be stirred through the blades; wherein, the circular coiled pipe of the distributor 2 is located below the stirring shaft 51, so that the air holes arranged at equal intervals at the bottom of the circular coiled pipe and inclined downward and outward perform bubbling under the blades of the stirring shaft 51, so that the reaction solution in the stirring state can be fully mixed with the modifier and the branching reaction can proceed fully.

[0074] In a specific embodiment, the reactor further includes a feeding unit, and the feeding unit includes: a feeding tank 6, a solvent pipe 63, a pressure regulating pipe 64, and a fifth control valve 621. The feeding tank 6 has a top opening 61 and a bottom pipe 62. The top opening 61 is used to add monomer materials into the feeding tank 6. The bottom pipe 62 is inserted into the reactor and is used to add the monomer materials in the feeding tank 6 into the reactor. In actual operation, a syringe can be used to add the monomer materials into the feeding tank 6 through the top opening 61, and after the addition is completed, the top opening 61 is closed. The solvent pipe 63 is communicated with the feeding tank 6 and is used to transport the solvent into the feeding tank 6 and mix it with the monomer materials. An eighth control valve 631 can be installed on the solvent pipe 63, and the on-off of the solvent pipe 63 can be controlled through the eighth control valve 631. In actual operation, the solvent is added into the feeding tank 6 through the solvent pipe 63 to be mixed with the monomer materials, and the solvent in this part is of the same type as the solvent in the reaction solution in the reactor. The pressure regulating pipe 64 is in a T shape. One end of the pressure regulating pipe 64 is communicated with the feeding tank 6, and the pressure regulating pipe 64 is used to adjust the internal air pressure of the feeding tank 6 to press the mixture of the solvent and the monomer materials into the reactor; a ninth control valve 641 and a tenth control valve 642 are respectively installed on the pipe body at the other end of the pressure regulating pipe 64. In actual operation, the on-off of the pipe body at the corresponding end can be controlled through the ninth control valve 641, and thus the pressurization of the feeding tank 6 can be realized. The on-off of the pipe body at the corresponding end can be controlled through the tenth control valve 642, and thus the pressure relief of the feeding tank 6 can be realized. The fifth control valve 621 is installed on the bottom pipe 62 and is used to control the on-off of the bottom pipe 62.

[0075] As a preferred mode, a second fine adjustment valve 622 is installed on the pipe body of the bottom pipe 62 outside the reactor. The second fine adjustment valve 622 is located between the fifth control valve 621 and the reactor and is used to cut off or adjust the solution flow rate from the bottom pipe 62 into the feeding tank 6. The second fine adjustment valve 622 is preferably a needle valve.

[0076] In this embodiment, when feeding materials into the reactor, the fifth control valve 621 is closed, the eighth control valve 631 is opened, the top opening 61 is opened, the solvent and the monomer materials are respectively added into the feeding tank 6. After the addition is completed, the eighth control valve 631 and the top opening 61 are closed. The ninth control valve 641 is opened and the tenth control valve 642 is closed, and nitrogen is filled into the feeding tank 6. When the air pressure in the feeding tank 6 reaches a certain pressure value and is greater than the pressure in the reactor, the ninth control valve 641 is closed, and the fifth control valve 621 is opened. Due to the pressure difference between the feeding tank 6 and the reactor, the reaction solution in the feeding tank 6 can be supplemented into the reactor through the bottom pipe 62. After the subsequent reaction solution is supplemented, the fifth control valve 621 is closed, the tenth control valve 642 is opened, and the nitrogen in the feeding tank 6 is emptied to prepare for subsequent feeding.

[0077] In a specific embodiment, the reactor further includes a temperature control unit for regulating the temperature of the reactor. The temperature control unit includes a temperature control box 7, a heating component 71, and a cooling component 72. The reactor body 31 is located within the temperature control box 7, and a heat-conducting medium is contained inside the temperature control box 7. The heat-conducting medium is preferably heat-conducting oil to provide the reaction temperature for the branching reaction inside the reactor. The heating component 71 is installed on the temperature control box 7 for heating the heat-conducting medium inside the temperature control box 7. The heating component 71 is preferably a heating rod, which is inserted into the box body from the bottom of the temperature control box 7 and can heat the heat-conducting medium after being powered on. The cooling component 72 is installed on the temperature control box 7 for cooling the heat-conducting medium inside the temperature control box 7. The cooling component 72 is preferably a cooling pipe, through which cold water or other flowing cooling media can pass. The cooling pipe is preferably wound around the outer wall of the reactor body 31 in a spiral manner, and both ends of the cooling pipe pass through the bottom wall of the temperature control box 7 and extend to the outside. Cold water or other cooling media are made to flow inside the cooling pipe by an external cold water or other cooling media supply device to achieve cooling of the heat-conducting medium inside the temperature control box 7. A temperature detection component may also be inserted into the bottom wall of the temperature control box 7. For example, the temperature detection component may be a temperature probe.

[0078] As a preferred method, a replenishment port 73 is provided on the side wall of the temperature control box 7 near the top, and an expander 731 is installed on the replenishment port 73. The expander 731 contains a heat-conducting medium, which can timely replenish the heat-conducting medium into the temperature control box 7. A drain port 74 is provided at the bottom of the temperature control box 7, through which the heat-conducting medium can be discharged from the temperature control box 7. A balance nozzle 75 is also provided on the side wall of the temperature control box 7 near the top for regulating the internal air pressure of the temperature control box 7 to enable the heat-conducting medium to enter the temperature control box 7 through the replenishment port 73.

[0079] In this embodiment, the outside of the temperature control box 7 is coated with a heat-insulating layer 76, which is preferably heat-insulating cotton and is coated around the outer periphery of the side wall of the temperature control box 7 to reduce the heat exchange effect between the temperature control box 7 and the outside.

[0080] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Without departing from the principles and purposes of the present invention, those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and all these changes should fall within the protection scope of the claims of the present invention.

Claims

1. A gas circulation distribution device, characterized in that: The gas circulation distribution device comprises: A reactor, wherein the reactor is used for branching reaction of butadiene rubber; A boost assembly, the boost assembly having an input end and an output end; A venturi tube (1), the venturi tube (1) having an input end and an output end, the input end of the venturi tube (1) being used to connect to the reactor, the output end of the venturi tube (1) being used to connect to the input end of the booster assembly, the venturi tube (1) having a side branch port (11) located between the input end and the output end, being used to input a gaseous modifier into the venturi tube (1); and A distributor (2), the distributor (2) having an input end and an output end, the distributor (2) being used to pass through the reactor wall of the reactor, the input end and the output end of the distributor (2) being respectively located on the inner and outer sides of the reactor, the input end of the distributor (2) being connected to the output end of the booster assembly, the output end of the distributor (2) being used to be arranged at the inner bottom of the reactor, the output end of the distributor (2) being arranged as a spiral circular coil in the same horizontal plane, and air holes being arranged at intervals on the circular coil; The pressurizing component is used to pressurize the gas and the gaseous modifier inside the reactor and then transport them into the reactor through the air holes of the distributor (2).

2. The gas circulation distribution device according to claim 1, characterized in that: The air holes are arranged at equal intervals along the bottom of the circular coil and are arranged obliquely downward and outward.

3. The gas circulation distribution device according to claim 1, characterized in that: The reaction kettle comprises a kettle body (31) and a kettle cover (32), wherein the kettle body (31) and the kettle cover (32) are detachably connected; The distributor (2) extends from the bottom of the kettle body (31) into the bottom of the reactor, or the distributor (2) passes through the kettle cover (32) and closely adheres to the inner wall of the kettle body (31) and extends into the bottom of the reactor; A seventh control valve (21) is installed at one end of the distributor (2) located outside the kettle body (31); The kettle cover (32) is provided with a curved pipe (321) which is in communication with the input end of the venturi tube (1).

4. The gas circulation distribution device according to claim 3, characterized in that: A buffer unit is provided between the venturi tube (1) and the curved tube (321), and the buffer unit comprises: A buffer tank (4), wherein the buffer tank (4) has an air inlet pipe (41) and an air outlet pipe (42) therein, wherein the buffer tank (4) contains a buffer solution, wherein one end of the air inlet pipe (41) is located outside the buffer tank (4) and is connected to the bent pipe (321), and one end of the air inlet pipe (41) is located inside the buffer tank (4) and is located below the level of the buffer solution, and one end of the exhaust pipe (42) connected to the buffer tank (4) is located above the level of the buffer solution, and the other end of the exhaust pipe (42) is connected to the input end of the venturi tube (1); and / or, The bottom of the buffer tank (4) is provided with a first discharge port (43), and a first valve is installed on the first discharge port (43); and / or, A first control valve (411) is installed on the air intake pipe (41); A sixth control valve (421) is installed on the exhaust pipe (42).

5. The gas circulation distribution device according to claim 4, characterized in that: The buffer unit further includes a protection module, which includes: A protection branch pipe (44), wherein two ends of the protection branch pipe (44) are respectively connected to the air intake pipes (41) on both sides of the first control valve (411); a back pressure valve (441), wherein the back pressure valve (441) is installed on the protection branch pipe (44); a second control valve (442), the second control valve (442) being installed on the protection branch pipe (44) at one side of the input end of the back pressure valve (441); A first fine-tuning valve (443), the first fine-tuning valve (443) being installed on a protection branch pipe (44) at one side of an output end of the back pressure valve (441); a third control valve (412), the third control valve (412) being installed on the air inlet pipe (41) downstream of the protection branch pipe (44) along the gas flow direction; A drain pipe (45), wherein the drain pipe (45) is installed on the buffer tank (4), and a fourth control valve (451) is installed on the drain pipe (45).

6. The gas circulation distribution device according to claim 3, characterized in that: The reactor comprises a stirring unit, and the stirring unit comprises: A driving component, wherein the driving component is arranged on the kettle cover (32); A stirring component, wherein the stirring component is a stirring shaft (51) with a paddle, the stirring shaft (51) is located in the kettle body (31), and the top end of the stirring shaft (51) is fixedly connected to the output end of the driving component; Wherein, the circular coil of the distributor (2) is located below the stirring shaft (51).

7. The gas circulation distribution device according to claim 1, characterized in that: The reactor further comprises a feeding unit, wherein the feeding unit comprises: A feed tank (6), the feed tank (6) having a top opening (61) and a bottom pipe (62), the top opening (61) being used to add material monomers into the feed tank (6), and the bottom pipe (62) being inserted into the reactor and being used to add material monomers in the feed tank (6) into the reactor; A solvent pipe (63), the solvent pipe (63) is connected to the feed tank (6) and is used to transport the solvent into the feed tank (6) and mix it with the material monomer; A pressure regulating pipe (64), wherein the pressure regulating pipe (64) is T-shaped, one end of the pressure regulating pipe (64) is connected to the feeding tank (6), and the pressure regulating pipe (64) is used to adjust the internal air pressure of the feeding tank (6) so as to press the mixture of the solvent and the material monomer into the reaction kettle; A fifth control valve (621), the fifth control valve (621) is installed on the bottom pipe (62) and is used to control the opening and closing of the bottom pipe (62).

8. The gas circulation distribution device according to claim 7, characterized in that: A second fine-tuning valve (622) is installed on the tube body of the bottom tube (62) located outside the reactor, and the second fine-tuning valve (622) is located between the fifth control valve (621) and the reactor.

9. The gas circulation distribution device according to claim 3, characterized in that: The reactor further comprises a temperature control unit, which is used to adjust the temperature of the reactor. The temperature control unit comprises: A temperature control box (7), wherein the kettle body (31) is located in the temperature control box (7), and a heat-conducting medium is contained in the temperature control box (7); a heating component (71), the heating component (71) being mounted on the temperature control box (7) and being used for heating a heat-conducting medium in the temperature control box (7); A cooling component (72), the cooling component (72) is installed in the temperature control box (7) and is used to cool the heat-conducting medium in the temperature control box (7).

10. The gas circulation distribution device according to claim 9, characterized in that: The temperature control box (7) is provided with a replenishing port (73) on the side wall near the top, the temperature control box (7) is provided with an exhaust port (74) on the bottom, and the temperature control box (7) is also provided with a balancing nozzle (75) on the side wall near the top for adjusting the internal air pressure of the temperature control box (7) so that the heat transfer medium enters the temperature control box (7) through the replenishing port (73); and / or, The temperature control box (7) is coated with a heat-insulating layer (76) on the outside.

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