A waste gas collecting and processing device for a silicone oil reaction kettle

Abstract

This utility model relates to the field of silicone oil waste gas treatment technology, and discloses a silicone oil reactor waste gas collection and treatment device, including a collection component. The collection component is used for waste gas collection and treatment. The collection component includes an outer pipe body, an inner pipe body, a flange end, and a guide block. The inner pipe body is sleeved inside the outer pipe body. Each end of the outer pipe body and the inner pipe body is fixedly connected to a flange end. The guide block array is arranged inside the inner pipe body, and each guide block is fixedly connected to the inner wall of the inner pipe body. Through the cooperation of the internal components of the collection component, heat transfer oil is continuously injected into the space between the outer pipe body and the inner pipe body. The heat transfer oil keeps the internal space warm and prevents the internal space temperature from falling below the dew point, which would cause the chlorosilane monomers in the waste gas to undergo hydrolysis reaction. The generated silanols then condense into viscous siloxane polymers. The components in the guide block guide the waste gas, accelerates and prevents backflow.

Description

Technical Field

[0001] This utility model belongs to the field of silicone oil waste gas treatment technology, specifically, it relates to a silicone oil reactor waste gas collection and treatment device. Background Technology

[0002] Silicone oil usually refers to linear polysiloxane products that remain liquid at room temperature. Methyl silicone oil is the most common. It has good chemical stability, insulation and hydrophobic properties, and is widely used in the chemical industry. Its production process is mainly carried out in a reaction vessel. However, the reaction vessel will produce harmful gases during the reaction, so a reaction vessel that can collect waste gas is needed.

[0003] Silicon oil synthesis waste gas contains a large amount of chlorosilane monomers (such as Me2SiCl2). When the temperature is below the dew point, a hydrolysis reaction will occur: Me2SiCl2+2H2O→Me2Si(OH)2+2HCl. The generated silanols then condense into viscous siloxane polymers. This substance is more difficult to handle than ordinary chemical condensates, and its viscosity coefficient can reach the level of 10^4 mPa·s.

[0004] A document with publication number CN217909749U discloses a silicone oil reactor capable of collecting waste gas, comprising a reactor body, a first filter box, a second filter box, and a waste collection box. A conveying pipe is fixedly connected between the reactor body and the first filter box, and a vacuum pump is installed on the conveying pipe. An exhaust pipe is fixedly connected between the first filter box and the second filter box, extending from inside the second filter box to inside the waste collection box. A drain pipe is fixedly connected between the bottom of the first filter box and the waste collection box. A filter plate is detachably installed inside the second filter box. The silicone oil reactor for collecting waste gas provided by this utility model can purify waste gas soluble in liquid through the first filter box, and then filter waste gas insoluble in liquid through the second filter box, which can more thoroughly treat waste gas. Moreover, the filter plate inserted in the second filter box is simple and convenient to replace.

[0005] The aforementioned device has the problem of directly collecting and treating exhaust gas, which causes the chlorosilane monomers in the exhaust gas to react with moisture in the air during rapid cooling, generating condensates that are difficult to clean and causing blockages in the pipes, thus hindering the collection and cleaning of the pipes.

[0006] In view of this, this utility model is proposed. Utility Model Content

[0007] To solve the technical problems of waste gas collection, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A silicone oil reactor exhaust gas collection and treatment device includes a collection component for exhaust gas collection. The collection component includes an outer pipe, an inner pipe, a flange end, and a guide block. The inner pipe is sleeved inside the outer pipe. Each end of the outer pipe and the inner pipe is fixedly connected to a flange end. An array of guide blocks is arranged inside the inner pipe, and each guide block is fixedly connected to the inner wall of the inner pipe.

[0009] In a preferred embodiment of this utility model, a guide plate is provided between the outer tube and the inner tube. The guide plate is fixedly connected to the inner wall of the outer tube and the outer wall of the inner tube, respectively. A drain end and a liquid inlet end are respectively provided at opposite corners of the outer tube. Both the drain end and the liquid inlet end are fixedly connected to the outer tube.

[0010] In a preferred embodiment of this utility model, the sidewalls of the outer tube are respectively provided with a detection instrument and an electric control valve, and the detection instrument and the electric control valve are fixedly connected to the outer tube.

[0011] In a preferred embodiment of the present invention, each of the flow guide blocks is surrounded by a guide vane, each guide vane is fixedly connected to the flow guide block, and each flow guide block is fixedly connected to a heat exchange ring on its side, each heat exchange ring being embedded in the inner wall of the inner tube.

[0012] In a preferred embodiment of this utility model, each of the guide blocks and the inner tube body are combined to form a valve shape, and the guide vanes are arranged in an inclined arc shape.

[0013] In a preferred embodiment of this utility model, each of the guide blocks is fitted with an installation ring, and each installation ring is surrounded by a nozzle. Each nozzle is inclined, and the inclination direction of each nozzle is the same as the inclination direction of the adjacent guide vane.

[0014] In a preferred embodiment of this utility model, each of the mounting rings is connected to the same conveying pipe, which passes through the outer pipe and the inner pipe, and the connection between the conveying pipe and the outer and inner pipes is sealed.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This silicone oil reactor exhaust gas collection and treatment equipment, through the cooperation of internal components of the collection module, continuously injects heat transfer oil into the space between the outer and inner pipes, and uses the heat transfer oil to keep the internal space warm, so as to prevent the internal space temperature from falling below the dew point, causing the chlorosilane monomers in the exhaust gas to undergo hydrolysis reaction, and the generated silanols then condense into viscous siloxane polymers. In addition, the components in the guide block guide the exhaust gas, accelerates and prevents backflow.

[0017] 2. This silicone oil reactor exhaust gas collection and treatment equipment, guided by a guide plate, achieves uniform contact between the heat transfer oil and the inner wall of the inner tube, maintaining a uniform internal temperature and preventing the formation of silane monomers, which could lead to condensation or even chain reaction of gelation. The equipment uses a detection instrument to monitor the temperature and pressure between the outer and inner tubes in real time, thereby adjusting the temperature and quickly discharging the heat transfer oil in case of leakage.

[0018] 3. This silicone oil reactor exhaust gas collection and treatment equipment, by means of the same tilt angle between the nozzle and the guide vane, forms a vortex between the inert gas and the exhaust gas after the exhaust gas is discharged from the guide block port, thereby further accelerating the exhaust gas flow speed. The dry inert gas reduces the humidity inside the inner tube, and the inert gas is difficult to condense with silane monomers, avoiding condensation during transportation. Through continuous acceleration, the exhaust gas is transported quickly, shortening the time the exhaust gas stays in the inner tube and avoiding the sudden occurrence of hydrolysis reaction.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure between the flow guide blocks of this utility model;

[0024] Figure 4 This is a schematic diagram of the flow guide block structure of this utility model;

[0025] Figure 5 This is a schematic diagram showing the separation between the outer tube and the inner tube of this utility model.

[0026] In the diagram: 1. Outer pipe; 11. Inner pipe; 12. Flange end; 13. Drain end; 14. Inlet end; 15. Guide plate; 2. Detection instrument; 3. Electrically controlled valve; 4. Delivery pipe; 41. Mounting ring; 42. Nozzle; 5. Guide block; 51. Guide vane; 52. Heat exchange ring. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0028] Please see Figure 1-5A waste gas collection and treatment device for a silicone oil reactor includes a collection component for waste gas collection. The collection component includes an outer pipe 1, an inner pipe 11, a flange end 12, and guide blocks 5. The inner pipe 11 is sleeved inside the outer pipe 1, and a flange end 12 is fixedly connected to each end of the outer pipe 1 and the inner pipe 11. The guide blocks 5 are arrayed inside the inner pipe 11, and each guide block 5 is fixedly connected to the inner wall of the inner pipe 11. Through the cooperation of the internal components of the collection component, heat transfer oil is continuously injected into the space between the outer pipe 1 and the inner pipe 11. The heat transfer oil keeps the internal space warm, preventing the internal space temperature from falling below the dew point, which would cause the chlorosilane monomers in the waste gas to undergo hydrolysis. The generated silanols then condense into viscous siloxane polymers. The components in the guide blocks 5 guide the waste gas, accelerating and preventing backflow.

[0029] It is worth noting that since this device is designed for the treatment of waste gas collection, the subsequent waste gas treatment is not disclosed. Furthermore, the prior art document CN217909749U, which mentions a silicone oil reactor for collecting waste gas, has already disclosed the subsequent treatment in detail, so it is not disclosed in this article and will not be elaborated here.

[0030] A guide plate 15 is provided between the outer tube 1 and the inner tube 11. The guide plate 15 is fixedly connected to the inner wall of the outer tube 1 and the outer wall of the inner tube 11, respectively. A drain end 13 and a liquid inlet end 14 are respectively provided diagonally on the outer tube 1. Both the drain end 13 and the liquid inlet end 14 are fixedly connected to the outer tube 1. A detection instrument 2 and an electric control valve 3 are respectively provided on the side wall of the outer tube 1. Both the detection instrument 2 and the electric control valve 3 are fixedly connected to the outer tube 1. With the cooperation of the drain end 13 and the liquid inlet end 14, a circulating heat pump is connected to continuously supply heat transfer oil with sufficient heat to the space inside the outer tube 1 and the inner tube 11, thereby maintaining the temperature of the space inside the outer tube 1 and the inner tube 11 and preventing waste gas. The chlorosilane monomers in the pipe undergo hydrolysis, and the resulting silanols then condense into viscous siloxane polymers, causing blockages in the pipes and hindering pipe collection and cleaning. The guide plate 15 between the outer pipe 1 and the inner pipe 11 guides the flow of heat transfer oil, preventing it from flowing randomly within the space between the outer pipe 1 and the inner pipe 11, which would cause turbulence and result in some heat transfer oil remaining in the space between the outer pipe 1 and the inner pipe 11. Under the guidance of the guide plate 15, the heat transfer oil is made to contact the inner wall of the inner pipe 11 evenly, maintaining a uniform internal temperature and preventing the formation of silane monomers, which could lead to condensation or even a chain reaction of gelation.

[0031] It is worth noting that the condensation of silane monomers is extremely sensitive to temperature; a local low temperature of 5°C is enough to trigger a chain reaction of gelation.

[0032] Furthermore, the temperature and pressure between the outer tube 1 and the inner tube 11 are monitored in real time by the detection instrument 2. When the internal temperature is not satisfactory, the internal heat transfer oil temperature is increased by transmitting an electrical signal. When the pressure between the outer tube 1 and the inner tube 11 continues to decrease, the internal heat transfer oil is discharged by controlling the electric control valve 3 through an electrical signal, so as to prevent the heat transfer oil from continuously flowing inside the pipe and affecting the treatment of waste gas in subsequent treatment steps. In addition, the petal structure between the guide block 5 and the inner tube 11 prevents the heat transfer oil from flowing randomly in the event of leakage.

[0033] Since the temperature and pressure detection capability of 2 is a standard feature in the field and is a well-known technology, the applicant has not described it in detail in the document and will not elaborate further here.

[0034] Each guide block 5 is surrounded by guide vanes 51, each guide vane 51 is fixedly connected to the guide block 5, and each guide block 5 is fixedly connected to a heat exchange ring 52 on its side. Each heat exchange ring 52 is embedded in the inner wall of the inner tube 11. Each guide block 5 and the inner tube 11 are combined to form a valve shape, and the guide vanes 51 are arranged in an inclined arc shape. After the exhaust gas enters the inner tube 11, the internal temperature is maintained to prevent hydrolysis reaction. Under the guidance of the guide block 5 and the guide vanes 51, the exhaust gas quickly converges towards the center, and the diameter of the guide block 5 suddenly narrows, increasing the shear angle between the exhaust gas and the guide block 5, thereby forming turbulence and accelerating the flow speed of the exhaust gas. Through continuous acceleration, the exhaust gas is quickly transported, shortening the time of the exhaust gas in the inner tube 11 and avoiding the sudden occurrence of hydrolysis reaction.

[0035] Each guide block 5 is fitted with an installation ring 41, and each installation ring 41 is surrounded by a nozzle 42. Each nozzle 42 is inclined, and the inclination direction of each nozzle 42 is the same as that of the adjacent guide vane 51. Each installation ring 41 is connected to the same delivery pipe 4, which passes through the outer pipe body 1 and the inner pipe body 11. The connection between the delivery pipe 4 and the outer pipe body 1 and the inner pipe body 11 is sealed. The delivery pipe 4 is connected to a gas pump for delivering dry inert gas. The inert gas passes through the delivery pipe. The pipe 4 passes through the space between the outer pipe body 1 and the inner pipe body 11, so the inert gas is heated into dry inert gas. The gas passes through the mounting ring 41 and is sprayed out from the nozzle 42. With the nozzle 42 and the guide vane 51 at the same tilt angle, after the exhaust gas is discharged from the port of the guide block 5, a vortex is formed between the inert gas and the exhaust gas, which further accelerates the flow speed of the exhaust gas. The dry inert gas reduces the humidity inside the inner pipe body 11, and the inert gas is difficult to condense with silane monomers, avoiding condensation during transportation.

[0036] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A waste gas collection and treatment device for a silicone oil reactor, characterized in that, include: The collection component is used for the treatment of exhaust gas collection stage. The collection component includes an outer pipe body (1), an inner pipe body (11), a flange end (12) and a guide block (5). The inner pipe body (11) is sleeved inside the outer pipe body (1). Each end of the outer pipe body (1) and the inner pipe body (11) is fixedly connected to a flange end (12). The guide block (5) is arranged in an array inside the inner pipe body (11), and each guide block (5) is fixedly connected to the inner wall of the inner pipe body (11).

2. The waste gas collection and treatment equipment for silicone oil reactors according to claim 1, characterized in that, A guide plate (15) is provided between the outer tube (1) and the inner tube (11). The guide plate (15) is fixedly connected to the inner wall of the outer tube (1) and the outer wall of the inner tube (11). A drain end (13) and a liquid inlet end (14) are provided at opposite corners of the outer tube (1). Both the drain end (13) and the liquid inlet end (14) are fixedly connected to the outer tube (1).

3. The waste gas collection and treatment equipment for silicone oil reactors according to claim 1, characterized in that, The outer tube (1) is provided with a detection instrument (2) and an electric control valve (3) on its side wall. The detection instrument (2) and the electric control valve (3) are fixedly connected to the outer tube (1).

4. The waste gas collection and treatment equipment for silicone oil reactors according to claim 1, characterized in that, Each of the flow guide blocks (5) is surrounded by a guide vane (51), each guide vane (51) is fixedly connected to the flow guide block (5), and each flow guide block (5) is fixedly connected to a heat exchange ring (52) on its side, each heat exchange ring (52) being embedded in the inner wall of the inner tube body (11).

5. The waste gas collection and treatment equipment for silicone oil reactors according to claim 4, characterized in that, Each of the aforementioned guide blocks (5) and the inner tube body (11) are combined to form a valve-like structure, and the guide leaf (51) is arranged in an inclined arc shape.

6. The waste gas collection and treatment equipment for silicone oil reactors according to claim 5, characterized in that, Each of the guide blocks (5) is fitted with an installation ring (41), and each installation ring (41) is surrounded by a nozzle (42). Each nozzle (42) is inclined, and the inclination direction of each nozzle (42) is the same as the inclination direction of the adjacent guide vane (51).

7. The waste gas collection and treatment equipment for silicone oil reactors according to claim 6, characterized in that, Each of the mounting rings (41) is connected to the same delivery pipe (4), which passes through the outer tube (1) and the inner tube (11). The connection between the delivery pipe (4) and the outer tube (1) and the inner tube (11) is sealed.

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