Fluidized bed structure for synthesis of silicone monomers

Abstract

The utility model provides a fluidized bed structure for organic silicon monomer synthesis, including fluidized bed body, the inside installation of fluidized bed body is equipped with the hopper of cone, the surface of hopper of cone is equipped with two air outlet pipes, the rear side of fluidized bed body is equipped with the gas storage tank, the top of gas storage tank is installed the air blower, and air blower is connected with two air outlet pipes respectively, the below of fluidized bed body is equipped with the feeding mechanism, one side of feeding mechanism is equipped with the air filter box. The utility model discloses through feeding mechanism and transports to the inside of hopper of cone with silicon powder, and air blower inhales the chloromethane in the inside of gas storage tank and transports to the inside of hopper of cone through air outlet pipe, the inside of hopper of cone forms gas solid fluidization state at this moment, thereby makes silicon powder and chloromethane fully react, and subsequently functional mechanism will produce heat conduction to liquid with hot gas heat, thereby improved the energy utilization, and subsequently functional mechanism will handle the tail gas, reduced the harm to the environment.

Description

Technical Field

[0001] This invention belongs to the field of organosilicon synthesis technology, specifically relating to a fluidized bed structure for synthesizing organosilicon monomers. Background Technology

[0002] Silicon or polysiloxanes are polymers composed of siloxanes (-R2Si-O-SiR2-, where R = organic group). They are typically colorless oils or rubbery substances. Organosilicones are used in sealants, adhesives, lubricants, pharmaceuticals, cookware, thermal insulation, and electrical insulation. Organosilicon monomers are raw materials for the preparation of silicone oils, silicone rubbers, silicone resins, and silane coupling agents; thousands of organosilicon products can be produced from a few basic monomers.

[0003] In the synthesis of organosilicon monomers, fluidized bed reactors are the core equipment. The organosilicon monomer gas generated by the reaction carries a large amount of high-temperature heat. However, traditional fluidized beds are not convenient for heat recovery, which reduces energy utilization. Furthermore, the direct emission of gas from traditional fluidized beds can easily cause environmental harm. Therefore, we propose a fluidized bed structure for the synthesis of organosilicon monomers. Utility Model Content

[0004] The purpose of this invention is to provide a fluidized bed structure for synthesizing organosilicon monomers, aiming to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fluidized bed structure for synthesizing organosilicon monomers includes: a fluidized bed body, a conical hopper installed inside the fluidized bed body, two air outlet pipes embedded on the surface of the conical hopper, an air storage tank located at the rear of the fluidized bed body, a blower installed on the top of the air storage tank and connected to the two air outlet pipes, a feeding mechanism located below the fluidized bed body, an air filter box located on one side of the feeding mechanism, multiple guide vanes rotatably connected to the surface of the air filter box, and a functional mechanism located on one side of the fluidized bed body.

[0007] In a preferred embodiment, the feeding mechanism includes a protective shell located below the fluidized bed body, and the protective shell is connected to an air filter box. A rotating impeller is rotatably connected inside the protective shell, and a feeding box is installed at one end of the protective shell. A connecting bucket adapted to a conical bucket is installed at one end of the feeding box.

[0008] As a preferred embodiment, the surface of the gas outlet pipe is provided with a ceramic wear-resistant coating, and the end of the gas outlet pipe located inside the fluidized bed body is provided with a neck.

[0009] In a preferred embodiment, a feeding baffle is snapped onto the surface of the feeding box, and a movable handle is fixedly connected to the surface of the feeding baffle.

[0010] In a preferred embodiment, a servo motor is mounted on the surface of the protective shell, a first pulley is fixedly connected to the surface of the output shaft of the servo motor, and a second pulley is fixedly connected to the surface of the rotating impeller, with the first pulley and the second pulley being rotatably connected by a transmission belt.

[0011] As a preferred embodiment, the functional mechanism includes a heat recovery tower located on one side of the fluidized bed body. The surface of the heat recovery tower is provided with an inlet valve and an outlet valve, and the interior of the heat recovery tower is provided with a heat conduction pipe.

[0012] As a preferred embodiment, the top of the heat pipe is provided with a gas delivery pipe, and a filter is fixedly connected to one end of the outer side of the gas delivery pipe, and the filter is connected to the top of the fluidized bed body.

[0013] As a preferred embodiment, a reaction tank is provided on the outside of the heat recovery tower, and an air inlet pipe and an exhaust pipe are provided on the surface of the reaction tank.

[0014] In a preferred embodiment, the height of one end of the intake pipe is lower than the height of one end of the exhaust pipe, and a control valve is installed at one end of the exhaust pipe.

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

[0016] This invention uses a feeding mechanism to transport silicon powder into the conical hopper. A blower draws out chloromethane from the gas storage tank and transports it to the conical hopper through an outlet pipe. At this point, a gas-solid fluidization state is formed inside the conical hopper, allowing the silicon powder and chloromethane to react fully. Subsequently, a functional mechanism transfers heat from the hot gas to the liquid, thereby improving energy utilization. The functional mechanism then treats the exhaust gas, reducing environmental harm. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of the overall structure of the fluidized bed structure for synthesizing organosilicon monomers according to this utility model;

[0020] Figure 2 This is a cross-sectional view of a portion of the structure of this utility model;

[0021] Figure 3 This is a cross-sectional view of the feeding mechanism in the structure of this utility model;

[0022] Figure 4 This is a cross-sectional view of the functional mechanism in the structure of this utility model.

[0023] The diagram shows: 1. Fluidized bed body; 2. Conical hopper; 3. Air outlet pipe; 4. Air storage tank; 5. Blower; 6. Feeding mechanism; 601. Protective shell; 602. Rotating impeller; 603. Feeding box; 604. Connecting hopper; 605. Feeding baffle; 606. Moving handle; 607. Servo motor; 608. First pulley; 609. Second pulley; 610. Transmission belt; 7. Air filter box; 8. Guide fan blades; 9. Functional mechanism; 901. Heat recovery tower; 902. Heat conduction pipe; 903. Gas delivery pipe; 904. Filter; 905. Reaction tank; 906. Air inlet pipe; 907. Exhaust pipe; 908. Control valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 4As shown, this embodiment of the present invention provides a fluidized bed structure for synthesizing organosilicon monomers, specifically including a fluidized bed body 1. A conical hopper 2 is installed inside the fluidized bed body 1. Two air outlet pipes 3 are embedded on the surface of the conical hopper 2. An air storage tank 4 is provided at the rear of the fluidized bed body 1. A blower 5 is installed on the top of the air storage tank 4 and is connected to the two air outlet pipes 3 respectively. A feeding mechanism 6 is provided below the fluidized bed body 1. An air filter box 7 is provided on one side of the feeding mechanism 6. Multiple guide fan blades 8 are rotatably connected to the surface of the air filter box 7. A functional mechanism 9 is provided on one side of the fluidized bed body 1. The feeding mechanism 6 includes a protective shell 601 located below the fluidized bed body 1 and is connected to the air filter box 7. A rotating impeller 602 is rotatably connected inside the protective shell 601. A feeding box 603 is installed at one end of the protective shell 601, and a connecting hopper 604 adapted to the conical hopper 2 is installed at one end of the feeding box 603. In this embodiment, silicon powder is conveyed to the inside of the conical hopper 2 by the feeding mechanism 6, and the blower 5 draws out the chloromethane from the gas storage tank 4 and conveys it to the inside of the conical hopper 2 through the gas outlet pipe 3. At this time, a gas-solid fluidization state is formed inside the conical hopper 2, so that the silicon powder and chloromethane can react fully. Subsequently, the functional mechanism 9 will transfer the heat generated by the hot gas to the liquid, thereby improving the energy utilization rate. Then, the functional mechanism 9 will treat the exhaust gas, reducing the harm to the environment.

[0026] Please see Figures 1 to 4 As shown, the surface of the gas outlet pipe 3 is coated with a ceramic wear-resistant coating, and one end of the gas outlet pipe 3 located inside the fluidized bed body 1 has a constriction. The coating on the gas outlet pipe 3 increases its service life, and the constriction accelerates the injection of chloromethane gas. A feeding baffle 605 is snapped onto the surface of the feeding box 603, and a movable handle 606 is fixedly connected to the surface of the feeding baffle 605. The feeding baffle 605 facilitates the addition of silicon powder to the inside of the feeding box 603, and the movable handle 606 facilitates the movement of the feeding baffle 605.

[0027] Please see Figures 1 to 4 As shown, a servo motor 607 is mounted on the surface of the protective shell 601. A first pulley 608 is fixedly connected to the surface of the output shaft of the servo motor 607, and a second pulley 609 is fixedly connected to the surface of the rotating impeller 602. The first pulley 608 and the second pulley 609 are rotatably connected via a transmission belt 610. When the servo motor 607 is started, its output shaft drives the first pulley 608 to rotate. At this time, under the action of the transmission belt 610 and the second pulley 609, the rotating impeller 602 is driven to rotate, thereby realizing the feeding of silicon powder.

[0028] Please see Figures 1 to 4As shown, the functional mechanism 9 specifically includes a heat recovery tower 901 located on one side of the fluidized bed body 1. The surface of the heat recovery tower 901 is equipped with an inlet valve and an outlet valve. Inside the heat recovery tower 901 is a heat-conducting pipe 902. At the top of the heat-conducting pipe 902 is a gas delivery pipe 903. One end of the gas delivery pipe 903 is fixedly connected to a filter 904, which communicates with the top of the fluidized bed body 1. Hot gas inside the fluidized bed body 1 enters the interior of the heat-conducting pipe 902 through the gas delivery pipe 903. At this time, the hot gas conducts heat to the liquid under the action of the heat-conducting pipe 902, thus recovering heat. A reaction tank 905 is located outside the heat recovery tower 901. The surface of the reaction tank 905 is equipped with an inlet pipe 906 and an outlet pipe 907. The height of one end of the inlet pipe 906 is lower than the height of one end of the outlet pipe 907. A control valve 908 is installed at one end of the outlet pipe 907. In this embodiment, the gas then enters the interior of the reaction vessel 905 through the inlet pipe 906. At this time, the gas comes into contact with NaOH and forms harmless salts. The gas after the reaction is discharged through the exhaust pipe 907 and the control valve 908.

[0029] Specifically, in this embodiment, the servo motor 607 starts its output shaft to drive the first pulley 608 to rotate. At this time, under the action of the transmission belt 610 and the second pulley 609, the rotating impeller 602 is driven to rotate. At this time, the inside of the protective shell 601 is in a negative pressure state. Outside air enters the inside of the protective shell 601 through the air filter box 7, thereby realizing the feeding of silicon powder. The blower 5 draws out the chloromethane inside the gas storage tank 4 and delivers it to the inside of the conical bucket 2 through the gas outlet pipe 3. At this time, the inside of the conical bucket 2 forms a gas-solid fluidization state, so that the silicon powder and chloromethane can fully react. The hot gas inside the fluidized bed body 1 enters the inside of the heat conduction pipe 902 through the gas delivery pipe 903. At this time, the hot gas conducts heat to the liquid under the action of the heat conduction pipe 902, and the heat can be recovered. Then the gas enters the inside of the reaction tank 905 through the gas inlet pipe 906. At this time, the gas comes into contact with NaOH and forms harmless salts. The gas after the reaction is discharged through the exhaust pipe 907 and the control valve 908.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fluidized bed structure for synthesizing organosilicon monomers, characterized in that: The fluidized bed body (1) includes a conical bucket (2) installed inside the fluidized bed body (1), two air outlet pipes (3) embedded on the surface of the conical bucket (2), an air storage tank (4) provided on the rear side of the fluidized bed body (1), a blower (5) installed on the top of the air storage tank (4), and the blower (5) is connected to the two air outlet pipes (3) respectively. A feeding mechanism (6) is provided below the fluidized bed body (1), an air filter box (7) is provided on one side of the feeding mechanism (6), and multiple guide fan blades (8) are rotatably connected to the surface of the air filter box (7). A functional mechanism (9) is provided on one side of the fluidized bed body (1).

2. The fluidized bed structure for synthesizing organosilicon monomers according to claim 1, characterized in that: The feeding mechanism (6) includes a protective shell (601) located below the fluidized bed body (1), and the protective shell (601) is connected to the air filter box (7). A rotating impeller (602) is rotatably connected inside the protective shell (601). A feeding box (603) is installed at one end of the protective shell (601), and a connecting bucket (604) adapted to the conical bucket (2) is installed at one end of the feeding box (603).

3. The fluidized bed structure for synthesizing organosilicon monomers according to claim 1, characterized in that: The surface of the air outlet pipe (3) is provided with a ceramic wear-resistant coating, and the end of the air outlet pipe (3) located inside the fluidized bed body (1) is provided with a neck.

4. The fluidized bed structure for synthesizing organosilicon monomers according to claim 2, characterized in that: The surface of the feeding box (603) is fitted with a feeding baffle (605), and a movable handle (606) is fixedly connected to the surface of the feeding baffle (605).

5. The fluidized bed structure for synthesizing organosilicon monomers according to claim 2, characterized in that: A servo motor (607) is mounted on the surface of the protective shell (601). A first pulley (608) is fixedly connected to the surface of the output shaft of the servo motor (607). A second pulley (609) is fixedly connected to the surface of the rotating impeller (602). The first pulley (608) and the second pulley (609) are rotatably connected by a transmission belt (610).

6. The fluidized bed structure for synthesizing organosilicon monomers according to claim 1, characterized in that: The functional mechanism (9) includes a heat recovery tower (901) located on one side of the fluidized bed body (1). The surface of the heat recovery tower (901) is provided with an inlet valve and an outlet valve, and the interior of the heat recovery tower (901) is provided with a heat conduction pipe (902).

7. The fluidized bed structure for synthesizing organosilicon monomers according to claim 6, characterized in that: The top of the heat pipe (902) is provided with a gas delivery pipe (903), and a filter (904) is fixedly connected to one end of the outer side of the gas delivery pipe (903), and the filter (904) is connected to the top of the fluidized bed body (1).

8. The fluidized bed structure for synthesizing organosilicon monomers according to claim 6, characterized in that: The heat recovery tower (901) is provided with a reaction tank (905) on its outer side, and the surface of the reaction tank (905) is provided with an air inlet pipe (906) and an exhaust pipe (907).

9. The fluidized bed structure for synthesizing organosilicon monomers according to claim 8, characterized in that: The height of one end of the intake pipe (906) is lower than the height of one end of the exhaust pipe (907), and a control valve (908) is installed on one end of the exhaust pipe (907).

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