Mixing reaction kettle for organic silicon production

Abstract

The utility model discloses an efficient and energy-saving mixing reaction kettle for organic silicon production. Material mixing, temperature control and catalyst feeding are optimized. A multi-layer sleeve shaft stirring device is arranged in the kettle, and each layer rotates reversely, so that uniform mixing is ensured. A temperature control coil pipe is arranged in a spiral groove in the side wall and matched with an intelligent sensing and adjusting system, and accurate temperature management is achieved. A hollow stirring shaft is innovatively adopted as a catalyst conveying channel, and a top buffer box and a feeding pipe are combined, so that uniform distribution of a catalyst is ensured. The design improves the production efficiency and the product quality through intelligent control, saves energy and reduces emission, and is widely applicable to manufacturing of organic silicon materials.

Description

Technical Field

[0001] The utility model relates to the technical field of organosilicon production, in particular to a mixing reaction kettle for organosilicon production. Background Art

[0002] In the industrial production of organosilicon materials, the performance of the mixing reactor, as one of the core equipment, directly affects the quality, production efficiency and production cost of the product. Traditional mixing reactors for organosilicon production face multiple challenges, including low stirring efficiency, insufficient heat exchange, high energy consumption, and insufficient control precision of reaction conditions. These problems not only limit the efficiency of organosilicon synthesis and the purity of the product, but also increase the energy consumption and environmental burden in the production process.

[0003] Stirring efficiency is a key factor affecting the uniformity of material mixing. In the prior art, a single or simple structure stirring device in a reactor often fails to achieve sufficient mixing of materials in three-dimensional space, especially under high viscosity conditions, which easily forms a dead zone, resulting in uneven reaction and affecting the quality stability of the final product. In addition, due to the low heat exchange efficiency, traditional heating and cooling systems are difficult to achieve fast and accurate temperature control, which is particularly unfavorable for exothermic or endothermic reactions in many organosilicon synthesis processes, and may cause side reactions or reduce yields. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a mixing reactor for organic silicon production, which can effectively solve the problem of insufficient mixing of raw materials during the organic silicon mixing operation and solve the problem of reduced yield caused by side reactions.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a mixing reactor for organic silicon production, comprising a reactor body, a plurality of raw material inlet pipes are arranged on the top of the reactor body, a mixed material outlet pipe is arranged at the bottom of the reactor body, a stirring shaft composed of a plurality of sleeve shafts is arranged in the reactor body, the upper and lower ends of the sleeve shafts extend in sequence, stirring rods are arranged on the multi-section sleeve shaft parts extending from the lower end of the stirring shaft, and the rotation directions of two adjacent sleeve shafts in the stirring shaft are opposite;

[0006] A spiral groove is provided on the side wall of the kettle body, and a temperature control tube is provided in the spiral groove. The temperature control tube is a spiral coil structure. The upper end of the temperature control tube is connected to a heat exchange medium delivery pipe, and a heat exchange medium delivery pump is provided on the heat exchange medium delivery pipe. A temperature sensor is provided on the side wall of the kettle body, and the temperature sensor is connected to a control module, and the control module is connected to the heat exchange medium delivery pump.

[0007] In the preferred embodiment, the sleeve shafts constituting the stirring shaft are, from outside to inside, the first sleeve shaft, the second sleeve shaft, the third sleeve shaft and the fourth sleeve shaft, respectively. A driving mechanism is provided on the top of the kettle body, and the upper ends of the first sleeve shaft, the second sleeve shaft, the third sleeve shaft and the fourth sleeve shaft are all extended into the driving mechanism.

[0008] In a preferred solution, the driving mechanism includes a housing, and the first bevel gear, the second bevel gear, the third bevel gear and the fourth bevel gear are respectively provided on the first sleeve shaft, the second sleeve shaft, the third sleeve shaft and the fourth sleeve shaft parts located in the housing, and the first active bevel gear and the second active bevel gear are horizontally arranged on the side wall of the housing, the first active bevel gear is meshed with the first bevel gear and the second bevel gear, the second active bevel gear is meshed with the third bevel gear and the fourth bevel gear, and the first active bevel gear and the second active bevel gear are driven by a first synchronous belt;

[0009] One end of the rotating shaft where the second active bevel gear is located extends out of the housing, a driving motor is arranged on the top of the housing, and a second synchronous belt drives the driving shaft of the driving motor and the rotating shaft where the second active bevel gear is located extending out of the housing.

[0010] In a preferred embodiment, the first sleeve shaft, the second sleeve shaft, the third sleeve shaft and the fourth sleeve shaft located in the kettle body are all hollow tubes, and the side walls of the first sleeve shaft, the second sleeve shaft, the third sleeve shaft and the fourth sleeve shaft are all provided with catalyst output holes;

[0011] A catalyst buffer box is provided near the top of the kettle body, and a catalyst inlet hole is provided on each of the first sleeve shaft, the second sleeve shaft, the third sleeve shaft and the fourth sleeve shaft in the catalyst buffer box, and the multiple catalyst inlet holes are located at the same horizontal position.

[0012] In a preferred solution, a catalyst inlet pipe is provided on the top of the kettle body, and the catalyst inlet pipe passes through the top of the kettle body and extends to the side wall of the catalyst buffer box.

[0013] The utility model provides a mixing reactor for organic silicon production, which has the following beneficial effects by adopting the above structure:

[0014] (1) By arranging a stirring shaft composed of multiple sleeve shafts in the reactor body, in which the stirring rods of two adjacent sleeve shafts rotate in opposite directions, a complex three-dimensional stirring flow field is formed, which effectively eliminates the dead zone of the reaction materials, ensures that the organic silicon raw materials are quickly and evenly mixed in the reactor, and significantly improves the reaction efficiency and product uniformity;

[0015] (2) The spiral coil structure temperature control tube used in the design is tightly attached to the spiral groove of the side wall of the kettle body. In conjunction with the intelligent temperature control system, precise temperature control during the reaction process is achieved. The temperature sensor monitors in real time and is linked with the control module to automatically adjust the flow of the heat exchange medium to ensure that the reaction temperature is always maintained within the optimal range, which not only improves the selectivity and yield of the reaction, but also reduces energy waste.

[0016] (3) The setting of the catalyst buffer box and catalyst inlet hole enables the catalyst to be evenly distributed and injected during the reaction process, greatly enhancing the controllability of the reaction and the quality of the product;

[0017] (4) The newly added catalyst inlet pipe is directly connected to the catalyst buffer box, which simplifies the catalyst addition process and ensures that the catalyst can be replenished quickly and conveniently during continuous production, maintaining the continuity and stability of production, and further improving production efficiency and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the driving mechanism structure of the utility model.

[0021] In the figure: kettle body 1, raw material inlet pipe 101, mixture outlet pipe 102, spiral groove 103, catalyst inlet pipe 104, first sleeve shaft 2, first bevel gear 201, second sleeve shaft 3, second bevel gear 301, third sleeve shaft 4, third bevel gear 401, fourth sleeve shaft 5, fourth bevel gear 501, temperature control tube 6, heat exchange medium delivery pipe 7, heat exchange medium delivery pump 8, temperature sensor 9, control module 10, drive mechanism 11, shell 12, first active bevel gear 13, second active bevel gear 14, first synchronous belt 15, drive motor 16, second synchronous belt 17, catalyst output hole 18, catalyst buffer box 19, catalyst inlet hole 20. DETAILED DESCRIPTION

[0022] like Figure 1-2 In the invention, a mixing reactor for producing organic silicon comprises a reactor body 1, a plurality of raw material inlet pipes 101 are arranged on the top of the reactor body 1, a mixed material outlet pipe 102 is arranged on the bottom of the reactor body 1, a stirring shaft composed of a plurality of sleeve shafts is arranged in the reactor body 1, the upper and lower ends of the sleeve shafts extend in sequence, stirring rods are arranged on the multi-section sleeve shaft parts extending from the lower end of the stirring shaft, and the rotation directions of two adjacent sleeve shafts in the stirring shaft are opposite;

[0023] A spiral groove 103 is provided on the side wall of the kettle body 1, and a temperature control tube 6 is provided in the spiral groove 103. The temperature control tube 6 is a spiral coil structure. The upper end of the temperature control tube 6 is connected to a heat exchange medium delivery pipe 7, and a heat exchange medium delivery pump 8 is provided on the heat exchange medium delivery pipe 7. A temperature sensor 9 is provided on the side wall of the kettle body 1, and the temperature sensor 9 is connected to a control module 10, and the control module 10 is connected to the heat exchange medium delivery pump 8.

[0024] In the preferred embodiment, the sleeve shafts constituting the stirring shaft are, from the outside to the inside, the first sleeve shaft 2, the second sleeve shaft 3, the third sleeve shaft 4 and the fourth sleeve shaft 5. A driving mechanism 11 is provided on the top of the kettle body 1, and the upper ends of the first sleeve shaft 2, the second sleeve shaft 3, the third sleeve shaft 4 and the fourth sleeve shaft 5 are all extended into the driving mechanism 11.

[0025] In a preferred embodiment, the driving mechanism 11 includes a housing 12, and the first sleeve shaft 2, the second sleeve shaft 3, the third sleeve shaft 4 and the fourth sleeve shaft 5 located in the housing 12 are respectively provided with a first bevel gear 201, a second bevel gear 301, a third bevel gear 401 and a fourth bevel gear 501, and a side wall of the housing 12 is provided with a horizontally arranged first active bevel gear 13 and a second active bevel gear 14, the first active bevel gear 13 is meshed with the first bevel gear 201 and the second bevel gear 301, the second active bevel gear 14 is meshed with the third bevel gear 401 and the fourth bevel gear 501, and the first active bevel gear 13 and the second active bevel gear 14 are driven by a first synchronous belt 15;

[0026] One end of the rotating shaft where the second active bevel gear 14 is located extends out of the housing 12 , and a driving motor 16 is provided on the top of the housing 12 . The driving shaft of the driving motor 16 and the rotating shaft where the second active bevel gear 14 is located that extends out of the housing 12 are driven by a second synchronous belt 17 .

[0027] In a preferred embodiment, the first sleeve shaft 2, the second sleeve shaft 3, the third sleeve shaft 4 and the fourth sleeve shaft 5 located in the kettle body 1 are all hollow tubes, and the side walls of the first sleeve shaft 2, the second sleeve shaft 3, the third sleeve shaft 4 and the fourth sleeve shaft 5 are all provided with catalyst output holes 18;

[0028] A catalyst buffer box 19 is provided near the top of the kettle body 1, and a catalyst inlet hole 20 is provided on each of the first sleeve shaft 2, the second sleeve shaft 3, the third sleeve shaft 4 and the fourth sleeve shaft 5 in the catalyst buffer box 19, and the multiple catalyst inlet holes 20 are located at the same horizontal position.

[0029] In a preferred solution, a catalyst inlet pipe 104 is provided on the top of the kettle body 1 , and the catalyst inlet pipe 104 passes through the top of the kettle body 1 and extends to the side wall of the catalyst buffer box 19 .

[0030] In a mixing reactor for producing organic silicon disclosed in the present invention:

[0031] 1. Kettle body design: The kettle body 1 is made of high temperature resistant and corrosion resistant stainless steel, with an internal volume of 5 cubic meters. A plurality of raw material inlet pipes 101 are provided on the top for adding different organosilicon monomers and initiators respectively; a mixed material outlet pipe 102 is installed at the bottom for facilitating the discharge of the product after the reaction is completed. The side wall of the kettle body 1 is specially designed with a spiral groove 103, with a depth of 50 mm and a width of 40 mm, which surrounds the kettle body to accommodate the temperature control tube 6.

[0032] 2. Stirring device: The stirring shaft is composed of four sleeve shafts, namely the first sleeve shaft 2, the second sleeve shaft 3, the third sleeve shaft 4 and the fourth sleeve shaft 5, with diameters decreasing in sequence, and the smallest diameter of the fourth sleeve shaft 5 is 100mm. The stirring rod extending from the lower end of each sleeve shaft is equipped with stirring blades of a specific shape to achieve different levels of material mixing. The rotation directions of the first sleeve shaft 2 to the fourth sleeve shaft 5 are clockwise, counterclockwise, clockwise, and counterclockwise, forming a complex stirring flow field.

[0033] 3. Temperature control system: The temperature control tube 6 is a spiral coil structure with a diameter of 20mm. It is made of titanium alloy, which is corrosion-resistant and has good thermal conductivity. It is connected to the heat exchange medium delivery pump 8 through the heat exchange medium delivery pipe 7. The delivery pump uses a high-temperature and high-pressure magnetic pump. The temperature sensor 9 is a high-precision platinum resistance type, installed in the middle section of the spiral groove 103, and directly fed back to the control module 10. The control module 10 automatically adjusts the flow of the heat exchange medium according to the temperature signal to ensure that the reaction temperature is stable within the set value ±1°C.

[0034] 4. Driving mechanism and catalyst delivery: The housing 12 of the driving mechanism 11 is cast, and the bevel gears installed inside, such as the first bevel gear 201 to the fourth bevel gear 501, are made of high-strength alloy steel, which ensures the reliability and wear resistance of the transmission. The driving motor 16 is a variable frequency speed regulating motor, and the stirring speed can be adjusted through the control panel. The catalyst buffer box 19 is arranged on the top of the kettle body 1, and a catalyst inlet hole 20 is arranged inside it corresponding to each sleeve shaft, and the catalyst is replenished from the outside through the catalyst inlet pipe 104.

[0035] In addition, in order to ensure the stability of each gear in the driving mechanism 11 during operation, Figure 2 As shown in , a support rod fixed on the inner wall of the housing 12 is provided to support the shaft where each gear is located to avoid the risk of gear disengagement due to excessive rotation speed.

[0036] Through the above embodiments, the hybrid reactor of the utility model shows excellent performance in the production of silicone. It not only has high mixing efficiency and precise control of reaction conditions, but also shows extremely high flexibility and practicality in uniform catalyst delivery, which significantly improves the quality and production efficiency of silicone products.

Claims

1. A mixing reactor for producing organic silicon, comprising a reactor body (1), wherein a plurality of raw material inlet pipes (101) are arranged at the top of the reactor body (1), and a mixed material outlet pipe (102) is arranged at the bottom of the reactor body (1), characterized in that: The kettle body (1) is provided with a stirring shaft composed of a plurality of sleeve shafts, the upper and lower ends of the sleeve shafts extend out in sequence, and stirring rods are provided on the multi-section sleeve shaft parts extending out from the lower end of the stirring shaft, and the rotation directions of two adjacent sleeve shafts in the stirring shaft are opposite; The side wall of the kettle body (1) is provided with a spiral groove (103), a temperature control tube (6) is provided in the spiral groove (103), the temperature control tube (6) is a spiral coil structure, the upper end of the temperature control tube (6) is connected to a heat exchange medium delivery tube (7), a heat exchange medium delivery pump (8) is provided on the heat exchange medium delivery tube (7), a temperature sensor (9) is provided on the side wall of the kettle body (1), the temperature sensor (9) is connected to a control module (10), and the control module (10) is connected to the heat exchange medium delivery pump (8).

2. A mixing reactor for producing organic silicon according to claim 1, characterized in that: The sleeve shafts constituting the stirring shaft are, from outside to inside, a first sleeve shaft (2), a second sleeve shaft (3), a third sleeve shaft (4) and a fourth sleeve shaft (5). A driving mechanism (11) is provided on the top of the kettle body (1), and the upper ends of the first sleeve shaft (2), the second sleeve shaft (3), the third sleeve shaft (4) and the fourth sleeve shaft (5) are all extended into the driving mechanism (11).

3. A mixing reactor for producing organic silicon according to claim 2, characterized in that: The driving mechanism (11) comprises a housing (12); a first bevel gear (201), a second bevel gear (301), a third bevel gear (401) and a fourth bevel gear (501) are respectively provided on the first sleeve shaft (2), the second sleeve shaft (3), the third sleeve shaft (4) and the fourth sleeve shaft (5) located in the housing (12); a first driving bevel gear (13) and a second driving bevel gear (14) are horizontally arranged on the side wall of the housing (12); the first driving bevel gear (13) is meshed with the first bevel gear (201) and the second bevel gear (301); the second driving bevel gear (14) is meshed with the third bevel gear (401) and the fourth bevel gear (501); and the first driving bevel gear (13) and the second driving bevel gear (14) are driven by a first synchronous belt (15); One end of the rotating shaft on which the second active bevel gear (14) is located extends out of the housing (12); a driving motor (16) is provided on the top of the housing (12); a second synchronous belt (17) is used to transmit power between the driving shaft of the driving motor (16) and the rotating shaft on which the second active bevel gear (14) extending out of the housing (12) is located.

4. A mixing reactor for producing organic silicon according to claim 2, characterized in that: The first sleeve shaft (2), the second sleeve shaft (3), the third sleeve shaft (4) and the fourth sleeve shaft (5) located in the kettle body (1) are all hollow tubes, and the side walls of the first sleeve shaft (2), the second sleeve shaft (3), the third sleeve shaft (4) and the fourth sleeve shaft (5) are all provided with catalyst output holes (18); A catalyst buffer box (19) is provided near the top of the kettle body (1), and a catalyst inlet hole (20) is provided on each of the first sleeve shaft (2), the second sleeve shaft (3), the third sleeve shaft (4) and the fourth sleeve shaft (5) located in the catalyst buffer box (19), and the plurality of catalyst inlet holes (20) are located at the same horizontal position.

5. A mixing reactor for producing organic silicon according to claim 4, characterized in that: A catalyst inlet pipe (104) is provided at the top of the kettle body (1), and the catalyst inlet pipe (104) passes through the top of the kettle body (1) and extends to the side wall of the catalyst buffer box (19).

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