Device for preventing silicon monomer from being blocked and reducing VOC (volatile organic compound) emission

Abstract

The utility model discloses a device for preventing silicon monomer blockage and reducing VOC (volatile organic compound) emission, which comprises a jacket butterfly valve, a nitrogen ring and a sealing funnel, a steam jacket is wrapped outside the jacket butterfly valve, and the steam jacket is used for introducing steam to keep the temperature of the jacket butterfly valve; the nitrogen ring comprises an upper nitrogen ring and a lower nitrogen ring which are respectively positioned at the upper and lower ends of the jacket butterfly valve; the sealing funnel is fixed to the upper end of the upper nitrogen ring and inclines upwards by 60 degrees from inside to outside. The inert gas barrier formed by the upper and lower groups of nitrogen rings effectively blocks contact between solvent steam in the reaction kettle and the silicon monomer, and prevents the silicon monomer from softening and sticking to block the pipe. Meanwhile, due to the special design of the jacket butterfly valve and the steam heating function, the silicon monomers are further prevented from being condensed and blocked due to temperature change, and the smooth feeding process is ensured; meanwhile, various barriers are constructed through the combined design of the nitrogen ring and the closed funnel, and VOC is effectively prevented from escaping outwards.

Description

Technical Field

[0001] This utility model belongs to the field of chemical reaction vessel technology, and specifically relates to a device for preventing silicon monomer blockage and reducing VOC emissions. Background Technology

[0002] In the production of organosilicon modified resins, adding silicon monomers to the reactor is a crucial step. However, in practice, this process is often accompanied by numerous technical problems, severely affecting the continuity and stability of production. Specifically, when silicon monomers enter the reactor through the feeding system, the presence of high-temperature organic solvent vapors inside the reactor easily dissolves the silicon monomers, causing them to soften and adhere to the inner walls of valves and pipelines, leading to severe blockages. Such blockages not only interrupt the production process and increase maintenance costs but can also damage equipment and reduce production efficiency. Furthermore, the release of volatile organic compounds (VOCs) during the feeding process is also a significant concern. VOCs are highly hazardous pollutants that pose a serious threat to the environment and human health. Their release not only severely damages the surrounding air quality and ecological environment but also threatens the health of workers. For example, long-term exposure to high concentrations of VOCs can cause respiratory diseases, nervous system damage, and other health problems. Simultaneously, the accumulation of VOCs can also create safety hazards, such as explosions due to excessive concentrations. Therefore, how to effectively control the emission of VOCs has become an important issue that urgently needs to be addressed in the production of organosilicon modified resins.

[0003] While existing technologies offer solutions to silicon monomer blockage and VOC emissions, they generally suffer from poor effectiveness or excessive cost. For example, some solutions rely on single measures (such as adding seals or improving pipeline design), failing to address the root cause; others require significant investment in equipment upgrades, increasing the financial burden on companies. Therefore, developing an efficient and economical technological solution that simultaneously addresses both silicon monomer blockage and VOC emissions is crucial for improving the environmental friendliness and safety of organosilicon modified resin production. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a device to prevent silicon monomer blockage and reduce VOC emissions. By designing an improved feeding device, it is ensured that silicon monomer can smoothly enter the reactor, while minimizing the emission of VOCs, thereby achieving production safety and environmental protection.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: a device for preventing silicon monomer blockage and reducing VOC emissions, comprising: a jacketed butterfly valve, wherein the jacketed butterfly valve is externally wrapped with a steam jacket, and the steam jacket is used to introduce steam to maintain the temperature of the jacketed butterfly valve;

[0006] Nitrogen ring, the nitrogen ring comprising an upper nitrogen ring and a lower nitrogen ring located at the upper and lower ends of the jacketed butterfly valve respectively;

[0007] A sealing funnel is fixed to the upper end of the upper nitrogen ring, and the sealing funnel is tilted upward at 60° from the inside to the outside.

[0008] Compared to existing technologies, the advantages of this invention are as follows: The inert gas barrier formed by the upper and lower nitrogen rings effectively blocks the contact between solvent vapor and silicon monomer in the reactor, preventing the silicon monomer from softening and sticking back to block the pipe. Simultaneously, the special design of the jacketed butterfly valve and the steam heating function further prevent silicon monomer from condensing and clogging due to temperature changes, ensuring smooth feeding. Furthermore, the combined design of the nitrogen rings and the sealed funnel creates multiple barriers, effectively preventing VOCs from escaping. In particular, the waste gas absorption system above the sealed funnel, as the last line of defense, ensures that even a small amount of VOCs can be absorbed and treated in a timely manner, thereby maximizing the protection of the environment and the health of workers. Moreover, the design of the large-diameter side funnel allows silicon monomer to flow quickly into the reactor under gravity, avoiding the inefficiency caused by small openings or material accumulation in traditional feeding methods. In addition, the dual-opening diversion design allows material to enter the funnel from two directions simultaneously, significantly increasing the material feed rate per unit time and greatly improving production efficiency.

[0009] In the aforementioned device, the diameter of the sealing funnel is greater than 500 mm.

[0010] In the aforementioned device, an exhaust pipe is provided above the sealed funnel to prevent VOCs from escaping.

[0011] In the aforementioned device, the sealing funnel is connected to the waste gas pipe via a flange.

[0012] In the aforementioned apparatus, the lower nitrogen ring is connected to the reactor via a seamless steel pipe.

[0013] The seamless steel pipe in the aforementioned device is made of stainless steel.

[0014] In the aforementioned device, a double-opening hinged door is added to the upper part of the sealed funnel to increase the amount of material fed per unit time.

[0015] In the aforementioned device, the double-opening hinged door can be controlled independently to reduce production interruption time.

[0016] In the aforementioned apparatus, the VOCs enter the sealed funnel upwards from the reactor and flow through a seamless steel pipe to the center of the sealed funnel.

[0017] In the aforementioned device, nitrogen gas enters the sealed funnel through the upper nitrogen ring and the lower nitrogen ring, forming two downward inert gas barriers to block the VOCs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the device according to an embodiment of the present utility model. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the nitrogen and VOC pathways in the device according to an embodiment of the present invention;

[0020] The reference numerals are as follows: 100 jacketed butterfly valve, 200 nitrogen ring, 210 upper nitrogen ring, 220 lower nitrogen ring, 300 sealing funnel, 310 double-opening hinged door, 400 waste gas pipe, 500 seamless steel pipe, and 600 reaction vessel. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below, with reference to Figures 1 to 2 This invention provides a device for preventing silicon monomer blockage and reducing VOC emissions, comprising: a jacketed butterfly valve 100, a nitrogen ring 200, and a sealing funnel 300. The jacketed butterfly valve is externally wrapped with a steam jacket, which is used to introduce steam to maintain the temperature of the jacketed butterfly valve 100. The nitrogen ring 200 includes an upper nitrogen ring 210 and a lower nitrogen ring 220 located at the upper and lower ends of the jacketed butterfly valve 100, respectively. The sealing funnel 300 is fixed to the upper end of the upper nitrogen ring 210 and is inclined upward at 60° from the inside to the outside. The inert gas barrier formed by the two sets of nitrogen rings 200 effectively blocks the contact between solvent vapor and silicon monomer in the reactor 600, preventing the silicon monomer from softening and sticking back to block the pipe. Meanwhile, the special design of the jacketed butterfly valve 100 and its steam heating function further prevent silicon monomers from condensing and clogging due to temperature changes, ensuring smooth feeding. Simultaneously, the combined design of the nitrogen ring 200 and the sealed funnel 300 creates multiple barriers, effectively preventing VOCs from escaping. In particular, the waste gas absorption system 400 above the sealed funnel 300, as the last line of defense, ensures that even small amounts of VOCs can be absorbed and treated promptly, thus maximizing the protection of the environment and the health of workers. Furthermore, the large-diameter side-sealed funnel 300 allows silicon monomers to flow rapidly into the reactor 600 under gravity, avoiding the inefficiencies caused by small openings or material accumulation in traditional feeding methods. In addition, the dual-opening diversion design allows material to enter the sealed funnel 300 simultaneously from two directions, significantly increasing the material feed rate per unit time and greatly improving production efficiency.

[0022] Furthermore, the jacketed butterfly valve 100 is enclosed by a steam jacket and opens in conjunction with the control after feeding is completed. This effectively prevents silicon monomers from condensing and clogging due to temperature drop, thus ensuring smooth feeding. Simultaneously, the upper nitrogen ring 210 and lower nitrogen ring 220 at the upper and lower ends of the jacketed butterfly valve 100 form an inert gas barrier, preventing solvent vapors inside the reactor 600 from contacting the silicon monomers and preventing the silicon monomers from softening and sticking back to block the pipe. Furthermore, this invention does not limit the specific tilt angle of the sealing funnel 300. Preferably, the sealing funnel 300 tilts upwards at 60° from the inside out. This design allows the silicon monomers to flow naturally and quickly downwards under gravity and a large downward force, preventing silicon monomers from accumulating on the inner wall of the sealing funnel 300, thereby reducing the possibility of clogging. Of course, this invention does not limit the diameter range of the sealing funnel 300. Preferably, the diameter of the sealing funnel 300 is greater than 500 mm. Furthermore, the design of the sealed funnel 300, fixed to the upper end of the nitrogen ring 210 and tilted upwards at 60°, not only allows the silicon monomers to flow efficiently under gravity but also reduces the possibility of material accumulation. The large-diameter sealed funnel 300 can significantly increase the amount of silicon monomers fed per unit time, thereby improving production efficiency. Secondly, the larger opening area helps reduce the accumulation of silicon monomers inside the sealed funnel 300, reducing the risk of blockage. In addition, the large-diameter design also provides convenient conditions for subsequent cleaning or inspection work, allowing operators to more easily enter the sealed funnel 300 for maintenance. This design not only improves the practicality of the equipment but also enhances the flexibility of the system, enabling the device to adapt to different scales of production needs while reducing time losses caused by frequent downtime for maintenance. Furthermore, an exhaust pipe 400 is provided above the sealed funnel 300 to prevent VOCs from escaping. The upper nitrogen ring 210 and lower nitrogen ring 220, acting as the first and second barriers, effectively prevent VOCs from escaping. Meanwhile, the exhaust pipe 400, as the third barrier, effectively captures trace amounts of VOCs escaping from the sealed funnel 300, ensuring that they do not pollute the surrounding environment or harm the health of workers. Furthermore, the exhaust pipe 400 can centrally collect and treat exhaust gases, protecting the environment and improving efficiency.

[0023] Furthermore, this utility model does not limit the connection method between the sealing funnel 300 and the exhaust pipe 400. Preferably, the sealing funnel 300 is connected to the exhaust pipe 400 via a flange. The flange connection structure is simple and easy to install, ensuring a firm and reliable connection between the sealing funnel 300 and the exhaust pipe 400, avoiding leakage problems caused by loose connections. Secondly, the flange connection facilitates disassembly and maintenance. When it is necessary to inspect the sealing funnel 300 or the exhaust pipe 400, the relevant components can be quickly disassembled, thereby reducing maintenance time. Further, referring to... Figure 2The lower nitrogen ring 220 is connected to the reactor 600 via a seamless steel pipe 500. VOCs generated in the reactor 600 can flow through the seamless steel pipe 500 into the jacketed butterfly valve 100. Nitrogen gas enters the sealed funnel 300 through the upper nitrogen ring 210 and lower nitrogen ring 220, forming two downward-facing inert gas barriers to block VOCs. The barriers formed by the upper nitrogen ring 210 and lower nitrogen ring 220 at both ends of the jacketed butterfly valve 100 effectively prevent VOCs from escaping upwards. The seamless steel pipe 500 has excellent strength and corrosion resistance, and can withstand high pressure and temperature changes, thus ensuring a safe and reliable connection between the nitrogen ring 200 and the reactor 600. Simultaneously, the smooth inner wall of the seamless steel pipe 500 reduces fluid resistance, allowing nitrogen gas to enter the system more smoothly, forming an effective inert gas barrier. Of course, this invention does not limit the specific material of the seamless steel pipe 500; preferably, the seamless steel pipe 500 is made of stainless steel. Furthermore, a double-opening hinged door 310 is added to the upper part of the sealed funnel 300 to increase the material feed rate per unit time. The design of the double-opening hinged door 310 allows material to enter the sealed funnel 300 simultaneously from both openings. Compared to a single-opening design, this increases the material feed rate per unit time, significantly improving production efficiency when large quantities of raw materials need to be fed quickly. Moreover, material may become clogged due to insufficient opening size or material characteristics (uniform particle size) as it passes through the funnel. The double-opening hinged door 310 design disperses the material flow path, reducing the possibility of material accumulation in one place and lowering the risk of blockage. Simultaneously, the double-opening hinged door 310 can be independently controlled to reduce production downtime. This independent control design allows operators to inspect or clean one side of the opening without completely stopping production, while the other side continues to operate. This significantly reduces production downtime caused by maintenance or inspection, improving the overall utilization rate of the equipment. In addition, the independent control function enhances the system's flexibility, allowing operators to adjust the feeding speed or direction flexibly according to actual needs, further optimizing production efficiency.

[0024] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0025] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A device for preventing silicon monomer blockage and reducing VOC emissions, characterized in that, include: A jacketed butterfly valve (100) is externally wrapped with a steam jacket, which is used to introduce steam to maintain the temperature of the jacketed butterfly valve (100); Nitrogen ring (200), the nitrogen ring (200) includes an upper nitrogen ring (210) and a lower nitrogen ring (220) located at the upper and lower ends of the jacketed butterfly valve (100), respectively; A sealing funnel (300) is fixed to the upper end of the upper nitrogen ring (210), and the sealing funnel (300) is inclined upward at 60° from the inside to the outside.

2. The apparatus according to claim 1, characterized in that, The diameter of the sealing funnel (300) is greater than 500 mm.

3. The apparatus according to claim 2, characterized in that, An exhaust pipe (400) is provided above the sealed funnel (300), which is used to prevent VOCs from escaping.

4. The apparatus according to claim 3, characterized in that, The sealing funnel (300) is connected to the exhaust pipe (400) via a flange.

5. The apparatus according to claim 4, characterized in that, The lower nitrogen ring (220) is connected to the reactor (600) via a seamless steel pipe (500).

6. The apparatus according to claim 5, characterized in that, The seamless steel pipe (500) is made of stainless steel.

7. The apparatus according to claim 6, characterized in that, The upper part of the sealed funnel (300) is provided with a double-opening hinged door (310) to increase the amount of material fed per unit time.

8. The apparatus according to claim 7, characterized in that, The double-opening hinged door (310) can be controlled independently to reduce production downtime.

9. The apparatus according to claim 8, characterized in that, The VOCs enter the sealed funnel (300) upwards through the reactor (600) and flow to the middle of the sealed funnel (300) through the seamless steel pipe (500).

10. The apparatus according to claim 9, characterized in that, Nitrogen gas enters the sealed funnel (300) through the upper nitrogen ring (210) and the lower nitrogen ring (220), forming two downward inert gas barriers to block the VOC.

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