Novel processing technology and equipment for hydroxyl silicone oil with medium and high viscosity
Through the design of torsion ring and torque plate, combined with temperature and pressure control, the efficient preparation of medium and high viscosity hydroxy silicone oil is achieved, solving the problems of high toxicity of raw materials and low stirring efficiency, and improving product quality and yield.
Patent Information
- Application Number
- CN202510421592.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2025-08-12
AI Technical Summary
In the prior art, the preparation method of hydroxy silicone oil has the problem of high toxicity of raw materials, product quality and yield greatly affected by hydrolysis conditions, and the stirring device in the sealed kettle is easily stuck with viscous substances, resulting in low stirring efficiency.
The torsion ring and torsion plate are designed, and the torsion plate on the outer side wall of the torsion ring is stirred in the annular chamber, combined with the cooperation of the extrusion rod and the extrusion bridge, efficient stirring is achieved; the reaction pressure and temperature are adjusted through the temperature and pressure control mechanism in a closed environment, and hydrolysis and condensation reactions are carried out.
It improves the stirring efficiency, reduces the stirring blind spots, ensures the full integration of materials, improves the generation efficiency and quality of hydroxy silicone oil, and solves the problems of raw material toxicity and low stirring efficiency.
Smart Images
Figure CN120459905A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of chemical processing, and in particular to a novel processing technology and equipment for producing medium- and high-viscosity hydroxy silicone oil. Background Art
[0002] At present, the preparation methods of hydroxy silicone oil mainly include D4 (or DMC) polymerization reaction method and dimethyldichlorosilane hydrolysis method. However, these two methods have their own advantages and disadvantages. For example, although the raw materials of the D4 polymerization reaction method are easy to obtain, the output is high and the quality is stable, the process is relatively complicated; the dimethyldichlorosilane hydrolysis method has a simple process, but the raw materials are more toxic, and the product quality and yield are greatly affected by the hydrolysis conditions. Therefore, how to weigh the pros and cons and choose the most suitable preparation method has become a key issue that needs to be solved in this study. When processing hydroxy silicone oil, dimethyldichlorosilane needs to be used as a raw material. The material of dimethyldichlorosilane is relatively viscous, and dimethyldichlorosilane needs to be added with auxiliary materials for mixing and stirring. The general stirring device is easily stuck by the viscous mixer;
[0003] Secondly, hydroxy silicone oil requires stable pressure and temperature during the production process. The previous reactors were closed, and the closed reactor body could not be stirred. If stirring was performed inside the closed reactor body, the reaction would be accelerated. Summary of the Invention
[0004] The object of the present invention is to provide a novel processing technology and equipment for medium- and high-viscosity hydroxy silicone oil. When the device is in use, dimethyldichlorosilane, buffer solution, desalted water and potassium hydroxide catalyst to be processed are placed inside the kettle body. At this time, the first stepper motor drives the torsion ring to rotate through the surrounding shaft. The torsion plate on the outer wall of the torsion ring will perform stirring operations in the annular chamber. When the extrusion rod driven by the torsion shaft fits into the side wall of the extrusion bridge, the extrusion bridge will support the extrusion rod and move in a straight line, and then the torsion plate will move in a straight line at the position of the extrusion bridge. The torsion plate will deviate from the circular trajectory to perform stirring operations to increase stirring efficiency, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above object, the present invention provides the following technical solution: a novel processing technology for medium-high viscosity hydroxy silicone oil, comprising the following steps:
[0006] S1. Dimethyldichlorosilane was fed into the reactor, and then buffer, desalted water and potassium hydroxide catalyst were added and stirred thoroughly. The temperature of the stirring process was controlled at 45 degrees Celsius;
[0007] S2. After stirring, the reactor is sealed to allow the reactor to reach an airtight state. At this time, air should be input into the internal space of the reactor to adjust the reaction pressure;
[0008] S3. Raise the temperature of the reactor to 180 degrees Celsius to allow the raw materials inside the reactor to undergo hydrolysis and condensation reactions. After the reaction is completed, two parts of oil and water separation will be produced, and the oily material on the top will be extracted after cooling.
[0009] A novel processing technology equipment for medium- and high-viscosity hydroxy silicone oil includes a kettle body, three supporting legs in a ring array are provided at the bottom of the kettle body, an inner cylinder is provided inside the kettle body, and a cabin with a ring-shaped cross section is provided between the kettle body and the inner cylinder; an axial ring is provided on the outer wall of the inner cylinder, a torsion ring is provided for rotation on the outer side of the axial ring, and stirring blades in a ring array are provided on the side wall of the torsion ring, and the stirring blades are connected to a driving mechanism; two sealed cover plates are provided at the port at the top of the kettle body, and a lifting handle is provided on the top surface of the sealed cover plate, the edge of the sealed cover plate is airtightly connected to the port of the kettle body, and a temperature and pressure control mechanism is provided on the side wall of the kettle body.
[0010] When in use, the dimethyldichlorosilane to be treated, buffer solution, desalted water and potassium hydroxide catalyst are placed into the kettle body. The stirring operation is carried out when the torsion ring and the annular array of stirring blades on its outer wall rotate. The design of the annular chamber will reduce the stirring dead angle. After the various materials are fully integrated, the two sealed covers at the top port of the kettle body are sealed, and then the temperature of the kettle body is raised to 180 degrees for the next step of hydroxy silicone oil generation reaction.
[0011] Furthermore, the stirring blade includes a torsion tube in an annular array on the outer wall of the torsion ring, a telescopic rod is slidingly arranged inside the torsion tube, a buffer spring is arranged inside the torsion tube, the inner end of the buffer spring is fixedly connected to the inner wall of the torsion tube, the outer end of the buffer spring is fixedly connected to the bottom surface of the telescopic rod, a vertical tube is arranged at the end of the telescopic rod facing away from the torsion tube, the vertical tube and the telescopic rod are perpendicular to each other, a torsion shaft is rotatably arranged inside the vertical tube, a torsion plate is arranged at the bottom of the torsion shaft, a torsion spring is sleeved on the outside of the torsion shaft, the top of the torsion spring is fixedly connected to the outer wall of the torsion shaft, and the bottom end of the torsion spring is fixedly connected to the top surface of the vertical tube.
[0012] When in use, the telescopic rod can be slightly extended and retracted inside the torsion tube, and the torsion plate can also rotate inside the vertical tube. The torsion plate has a rebound property under the action of the torsion spring, so that the torsion plate can contact more spatial positions inside the annular kettle cabin.
[0013] Furthermore, an extrusion rod is slidingly provided inside the torsion shaft, a hollow channel matching the extrusion rod is provided inside the torsion shaft, an expansion spring is provided inside the hollow channel, the expansion spring is connected to the bottom end of the extrusion rod, and two extrusion bridges are provided on the outer wall of the kettle body, and the edge of the top of the extrusion bridge is attached to the side wall of the extrusion rod.
[0014] During use, when the extrusion rod driven by the torsion shaft fits against the side wall of the extrusion bridge, the extrusion bridge will press the extrusion rod to move in a straight line, and then the torsion plate will move in a straight line at the position of the extrusion bridge. The torsion plate will deviate from the circular trajectory to perform mixing operations to increase mixing efficiency.
[0015] Furthermore, the driving mechanism includes a cantilever bridge on the inner wall of the inner tube, a first stepper motor is provided at the top of the cantilever bridge, a surrounding shaft is provided on the output shaft of the first stepper motor, the surrounding shaft can be removed from the output shaft of the first stepper motor, and the surrounding shaft passes between the two torsion tubes.
[0016] During use, when the surrounding shaft is removed from the first motor, the extrusion rod is pressed into the hollow channel of the torsion shaft, thereby making way for the sealing cover to be installed, and the sealing cover and the kettle body can form a closed space.
[0017] Furthermore, the temperature and pressure control mechanism includes a hanging platform on the side wall of the kettle body, an air machine is provided on the side wall of the hanging platform, the air pressure pipe of the air machine is connected to the interior of the kettle body, an interlayer is provided in the side wall of the kettle body, and an electric heating wire is provided in the interlayer.
[0018] When in use, the air machine can inflate or exhaust the interior of the kettle to control the pressure, and the heating wire can heat to control the temperature, so that dimethyldichlorosilane can generate medium to high viscosity hydroxy silicone oil under appropriate temperature and pressure.
[0019] Furthermore, a second stepper motor is provided at the bottom of the cantilever beam bridge, a bending shaft is provided at the output end of the second stepper motor, an electromagnet is provided at the end of the bending shaft, a vertical plate is provided at the bottom of the torsion ring, and an iron block that attracts the electromagnet is provided at the bottom end of the vertical plate.
[0020] When in use, the second stepper motor drives the bending shaft and the electromagnet at its end to rotate. The electromagnet will pull the torsion ring to continue rotating through the iron block, which can stir the chemical reaction inside the kettle in a closed environment to accelerate the chemical reaction.
[0021] In summary, due to the adoption of the above technology, the beneficial effects of the present invention are:
[0022] First, when the device is in use, the dimethyldichlorosilane, buffer solution, desalted water and potassium hydroxide catalyst to be treated are placed inside the kettle body. At this time, the first stepper motor drives the torsion ring to rotate by surrounding the shaft. The torsion plate on the outer wall of the torsion ring will perform stirring operations in the annular chamber. When the extrusion rod driven by the torsion shaft fits into the side wall of the extrusion bridge, the extrusion bridge will support the extrusion rod and move in a straight line, and then the torsion plate will move in a straight line at the position of the extrusion bridge. The torsion plate will deviate from the circular trajectory to perform stirring operations to increase stirring efficiency.
[0023] Secondly, when the surrounding shaft is removed from the first motor, the extrusion rod is pressed into the hollow channel of the torsion shaft, thereby making way for the sealed cover to be installed. After the sealed cover and the kettle body form a closed space, the second stepper motor drives the bending shaft and the electromagnet at its end to rotate. The electromagnet will drive the torsion ring to continue rotating through the iron block, which can allow the chemical reaction inside the kettle body to be stirred in a closed environment to accelerate the chemical reaction. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram showing the processing technology and equipment for a new type of medium-to-high viscosity hydroxy silicone oil.
[0025] Figure 2 The figure is a schematic diagram of a processing technology and equipment for a new medium-high viscosity hydroxy silicone oil from an upward perspective.
[0026] Figure 3 This is a schematic diagram of the processing technology and equipment section of a new type of medium-to-high viscosity hydroxy silicone oil.
[0027] Figure 4 This is a schematic diagram of a second perspective cross-sectional view of a new type of medium-to-high viscosity hydroxy silicone oil processing technology and its equipment.
[0028] Figure 5 Schematic diagram of a new type of processing technology and equipment torsion tube for medium and high viscosity hydroxy silicone oil.
[0029] Figure 6 Schematic diagram of the torsion ring of a new type of medium-to-high viscosity hydroxy silicone oil processing technology and equipment.
[0030] Figure 7 This is a schematic diagram of the processing technology and bending shaft of a new type of medium-to-high viscosity hydroxy silicone oil.
[0031] Figure 8 This is a schematic diagram of the processing technology of a new medium-to-high viscosity hydroxy silicone oil and the sealed cover of its equipment.
[0032] Description of reference numerals:
[0033] Kettle body 1, supporting legs 101, hanging platform 102, air machine 103, inner tube 2, extrusion bridge 3, cantilever bridge 4, first stepper motor 5, surrounding shaft 501, second stepper motor 6, electromagnet 601, bending shaft 602, shaft ring 7, torsion ring 701, vertical plate 702, iron block 703, torsion tube 8, telescopic rod 801, vertical tube 802, torsion shaft 803, torsion plate 804, torsion spring 805, extrusion rod 806, sealed cover 9, lifting handle 901. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0035] The present invention provides a novel processing technology for medium- and high-viscosity hydroxy silicone oil, comprising the following steps:
[0036] S1. Dimethyldichlorosilane was fed into the reactor, and then buffer, desalted water and potassium hydroxide catalyst were added and stirred thoroughly. The temperature of the stirring process was controlled at 45 degrees Celsius;
[0037] S2. After stirring, the reactor is sealed to allow the reactor to reach an airtight state. At this time, air should be input into the internal space of the reactor to adjust the reaction pressure;
[0038] S3. Raise the temperature of the reactor to 180 degrees Celsius to allow the raw materials inside the reactor to undergo hydrolysis and condensation reactions. After the reaction is completed, two parts of oil and water separation will be produced, and the oily material on the top will be extracted after cooling.
[0039] like Figures 1-8 The equipment shown is a novel processing technology for medium and high viscosity hydroxy silicone oil, including a kettle body 1, three annular array support legs 101 are provided at the bottom of the kettle body 1, an inner cylinder 2 is provided inside the kettle body 1, and a cabin with an annular cross-section is provided between the kettle body 1 and the inner cylinder 2; an axial ring 7 is provided on the outer wall of the inner cylinder 2, a torsion ring 701 is rotatably provided on the outer side of the axial ring 7, and a circular array of stirring blades are provided on the side wall of the torsion ring 701, and the stirring blades are connected to the driving mechanism; two sealed cover plates 9 are provided at the port at the top of the kettle body 1, and a lifting handle 901 is provided on the top surface of the sealed cover plate 9, the edge of the sealed cover plate 9 is airtightly connected to the port of the kettle body 1, and a temperature and pressure control mechanism is provided on the side wall of the kettle body 1.
[0040] In this embodiment, dimethyldichlorosilane to be treated is fed into the kettle body 1, and the buffer solution, desalted water and potassium hydroxide catalyst are then placed inside the kettle body 1. The torsion ring 701 and the annular array of stirring blades on its outer wall rotate to perform the stirring operation. The design of the annular chamber will reduce the stirring dead angle. After the various materials are fully integrated, the two sealed cover plates 9 at the top port of the kettle body 1 are sealed, and then the temperature of the kettle body 1 is raised to 180 degrees to proceed with the next step of the hydroxyl silicone oil generation reaction.
[0041] The stirring blade includes a torsion tube 8 in an annular array on the outer wall of the torsion ring 701, a telescopic rod 801 is slidably arranged inside the torsion tube 8, a buffer spring is arranged inside the torsion tube 8, the inner end of the buffer spring is fixedly connected to the inner wall of the torsion tube 8, and the outer end of the buffer spring is fixedly connected to the bottom surface of the telescopic rod 801, and a vertical tube 802 is arranged at the end of the telescopic rod 801 facing away from the torsion tube 8, and the vertical tube 802 and the telescopic rod 801 are perpendicular to each other, and a torsion shaft 803 is rotatably arranged inside the vertical tube 802, a torsion plate 804 is arranged at the bottom of the torsion shaft 803, and a torsion spring 805 is sleeved on the outside of the torsion shaft 803, the top end of the torsion spring 805 is fixedly connected to the outer wall of the torsion shaft 803, and the bottom end of the torsion spring 805 is fixedly connected to the top surface of the vertical tube 802.
[0042] In this embodiment, the telescopic member 801 can be slightly extended and retracted inside the torsion tube 8, and the torsion plate 804 can also rotate inside the vertical tube 802. The torsion plate 804 has a rebound property under the action of the torsion spring 805, so that the torsion plate 804 can contact more spatial positions inside the annular kettle body 1 chamber. Compared with the reactor stirring device in the prior art, the previous reactor stirring device has many stirring dead angles that cannot be reached.
[0043] An extrusion rod 806 is slidingly provided inside the torsion shaft 803, and a hollow channel matching the extrusion rod 806 is provided inside the torsion shaft 803. An expansion spring is provided inside the hollow channel, and the expansion spring is connected to the bottom end of the extrusion rod 806. Two extrusion bridges 3 are provided on the outer wall of the kettle body 1, and the edge of the top of the extrusion bridge 3 is attached to the side wall of the extrusion rod 806.
[0044] In this embodiment, when the extrusion rod 806 driven by the torsion shaft 803 fits against the side wall of the extrusion bridge 3, the extrusion bridge 3 will press against the extrusion rod 806 and move in a straight line, and then the torsion plate 804 will move in a straight line at the position of the extrusion bridge 3. The torsion plate 804 will deviate from the circular trajectory to perform stirring operations to increase stirring efficiency. Compared with the stirring of the prior art, it is easy to form the inertia of liquid vortex, which will lead to a reduction in convection between various substances.
[0045] The driving mechanism includes a cantilever bridge 4 on the inner wall of the inner tube 2, and a first stepper motor 5 is provided at the top of the cantilever bridge 4. A surrounding shaft 501 is provided on the output shaft of the first stepper motor 5. The surrounding shaft 501 can be removed from the output shaft of the first stepper motor 5, and the surrounding shaft 501 passes between the two torsion tubes 8.
[0046] In this embodiment, when the surrounding shaft 501 is removed from the first motor, the extrusion rod 806 is pressed into the hollow channel of the torsion shaft 803, thereby making way for the sealing cover 9 to be installed, and the sealing cover 9 and the kettle body 1 can form a closed space.
[0047] The temperature and pressure control mechanism includes a hanging platform 102 on the side wall of the kettle body 1, an air machine 103 is provided on the side wall of the hanging platform 102, the air pressure pipe of the air machine 103 is connected to the interior of the kettle body 1, an interlayer is provided in the side wall of the kettle body 1, and an electric heating wire is provided in the interlayer.
[0048] In this embodiment, the air machine 103 can inflate or exhaust the interior of the kettle body 1 to control the pressure, and the heating wire can heat to control the temperature, so that dimethyldichlorosilane can generate medium-to-high viscosity hydroxyl silicone oil under appropriate temperature and pressure.
[0049] A second stepper motor 6 is provided at the bottom of the cantilever bridge 4, a bending shaft 602 is provided at the output end of the second stepper motor 6, an electromagnet 601 is provided at the end of the bending shaft 602, a vertical plate 702 is provided at the bottom of the torsion ring 701, and an iron block 703 that attracts the electromagnet 601 is provided at the bottom of the vertical plate 702.
[0050] In this embodiment, the second stepper motor 6 drives the bending shaft 602 and the electromagnet 601 at its end to rotate. The electromagnet 601 will drive the torsion ring to continue rotating through the iron block, which can stir the chemical reaction inside the kettle body 1 in a closed environment to accelerate the chemical reaction.
[0051] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.
[0052] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
Claims
1. A new processing technology for medium and high viscosity hydroxy silicone oil, characterized in that: The following steps are involved: S1. Dimethyldichlorosilane was fed into the reactor, and then buffer, desalted water and potassium hydroxide catalyst were added and stirred thoroughly. The temperature of the stirring process was controlled at 45 degrees Celsius; S2. After stirring, the reactor is sealed to allow the reactor to reach an airtight state. At this time, air should be input into the internal space of the reactor to adjust the reaction pressure; S3. Raise the temperature of the reactor to 180 degrees Celsius to allow the raw materials inside the reactor to undergo hydrolysis and condensation reactions. After the reaction is completed, two parts of oil and water separation will be produced, and the oily material on the top will be extracted after cooling.
2. A new type of equipment for processing medium and high viscosity hydroxy silicone oil, characterized by: The invention comprises a kettle body (1), wherein the bottom of the kettle body (1) is provided with three supporting legs (101) in an annular array, an inner cylinder (2) is provided inside the kettle body (1), and a chamber with an annular cross section is provided between the kettle body (1) and the inner cylinder (2); A shaft ring (7) is provided on the outer wall of the inner cylinder (2), a torsion ring (701) is rotatably provided on the outer side of the shaft ring (7), and a ring-shaped array of stirring blades is provided on the side wall of the torsion ring (701), and the stirring blades are connected to a driving mechanism; The port at the top of the kettle body (1) is provided with two sealed cover plates (9), the top surface of the sealed cover plates (9) is provided with a lifting handle (901), the edge of the sealed cover plates (9) is airtightly connected to the port of the kettle body (1), and a temperature and pressure control mechanism is provided on the side wall of the kettle body (1).
3. The equipment for processing a novel medium-high viscosity hydroxy silicone oil according to claim 2, characterized in that: The stirring blade comprises a torsion tube (8) in an annular array on the outer wall of the torsion ring (701), a telescopic rod (801) is slidably provided inside the torsion tube (8), a buffer spring is provided inside the torsion tube (8), the inner end of the buffer spring is fixedly connected to the inner wall of the torsion tube (8), the outer end of the buffer spring is fixedly connected to the bottom surface of the telescopic rod (801), and the end of the telescopic rod (801) facing away from the torsion tube (8) is provided with a vertical tube (802). ), the vertical tube (802) and the telescopic rod (801) are perpendicular to each other, a torsion shaft (803) is rotatably provided inside the vertical tube (802), a torsion plate (804) is provided at the bottom of the torsion shaft (803), a torsion spring (805) is sleeved on the outside of the torsion shaft (803), the top end of the torsion spring (805) is fixedly connected to the outer side wall of the torsion shaft (803), and the bottom end of the torsion spring (805) is fixedly connected to the top surface of the vertical tube (802).
4. The equipment for processing a novel medium-high viscosity hydroxy silicone oil according to claim 3, characterized in that: An extrusion rod (806) is slidably provided inside the torsion shaft (803), a hollow channel matching the extrusion rod (806) is provided inside the torsion shaft (803), an expansion spring is provided inside the hollow channel, and the expansion spring is connected to the bottom end of the extrusion rod (806), and two extrusion bridges (3) are provided on the outer wall of the kettle body (1), and the edges of the top ends of the extrusion bridges (3) are fitted on the side walls of the extrusion rod (806).
5. The equipment for processing a novel medium-high viscosity hydroxy silicone oil according to claim 2, characterized in that: The driving mechanism comprises a cantilever bridge (4) on the inner side wall of the inner cylinder (2); a first stepper motor (5) is provided at the top end of the cantilever bridge (4); a surrounding shaft (501) is provided on the output shaft of the first stepper motor (5); the surrounding shaft (501) can be detached from the output shaft of the first stepper motor (5); and the surrounding shaft (501) passes between two torsion tubes (8).
6. The equipment for processing a novel medium-high viscosity hydroxy silicone oil according to claim 2, characterized in that: The temperature and pressure control mechanism comprises a hanging platform (102) on the side wall of the kettle body (1), an air machine (103) is arranged on the side wall of the hanging platform (102), an air pressure pipe of the air machine (103) is connected to the interior of the kettle body (1), and an interlayer is arranged in the side wall of the kettle body (1), and an electric heating wire is arranged in the interlayer.
7. The equipment for processing a novel medium-high viscosity hydroxy silicone oil according to claim 5, characterized in that: A second stepper motor (6) is provided at the bottom of the cantilever bridge (4); a bending shaft (602) is provided at the output end of the second stepper motor (6); an electromagnet (601) is provided at the end of the bending shaft (602); a vertical plate (702) is provided at the bottom of the torsion ring (701); and an iron block (703) that attracts the electromagnet (601) is provided at the bottom end of the vertical plate (702).