Fluidized bed structure for producing organic silicon

Abstract

The utility model provides an organic silicon production fluidized bed structure which comprises three supporting legs, an outer shell is fixedly connected to the top ends of the three supporting legs, a feeding pipe is arranged at the bottom end of the outer shell, a discharging pipe is arranged at the top end of the outer shell, three air inlet pipes are arranged on the outer shell in a circumferential array mode, and a mounting box is fixedly connected to the interior of the feeding pipe. A connecting shaft is rotationally connected to the interior of the mounting box, a first bevel gear is fixedly connected to the end of the connecting shaft, a mounting shaft is rotationally connected to the mounting box, a second bevel gear is fixedly connected to one end of the mounting shaft, the first bevel gear is meshed with the second bevel gear, and a blade shaft is fixedly connected to the other end of the mounting shaft; the blade shaft is rotationally connected with the rotating sleeve, and three blades are fixedly connected to the blade shaft in a circumferential array mode; the flow direction of silicon powder can be changed, so that the silicon powder and chloromethane are fully mixed, the reaction is more sufficient, the utilization rate of the silicon powder is improved, and the production efficiency of organic silicon is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of organosilicon production equipment, and particularly relates to an organosilicon production fluidized bed structure. Background Art

[0002] Due to the unique structure of organosilicon, it combines the properties of inorganic and organic materials, and has basic properties such as low surface tension, small viscosity-temperature coefficient, high compressibility, and high gas permeability. In the synthesis of organosilicon monomers, methyl chloride as a raw material reacts with metallic silicon powder under the action of a catalyst. This reaction is an exothermic gas-solid contact reaction. The reaction rate of methyl chloride gas and silicon powder solid is related to factors such as the particle size of the silicon powder, the amount of catalyst used, and the temperature of the methyl chloride.

[0003] In a traditional fluidized bed, silicon powder is fed into the feed port and reacts directly with methyl chloride gas. The silicon powder is blown upward by wind, resulting in insufficient solid-gas contact, low silicon powder utilization, and low silicone production efficiency. Utility Model Content

[0004] The purpose of the present invention is to provide a fluidized bed structure for organosilicon production in order to solve the above problems, which can change the flow direction of silicon powder, make the silicon powder and methyl chloride fully mixed, and thus make the reaction more complete, improve the utilization rate of silicon powder, and thus improve the efficiency of organosilicon production.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A fluidized bed structure for silicone production, comprising three supporting legs, the top ends of the three supporting legs are fixedly connected to an outer shell, the bottom end of the outer shell is provided with a feed pipe, the top end of the outer shell is provided with an exhaust pipe, three air inlet pipes are provided in a circumferential array on the outer shell, a partition is provided inside the outer shell, a plurality of sieve holes are provided on the partition, a mixing structure is provided on the feed pipe, the mixing structure comprises a mounting box, the interior of the feed pipe is fixedly connected to the mounting box, the interior of the mounting box is rotatably connected to a connecting shaft, the end of the connecting shaft is fixedly connected to a first bevel gear, the mounting box is rotatably connected to the mounting shaft, one end of the mounting shaft is fixedly connected to a second bevel gear, the first bevel gear is meshed with the second bevel gear, the other end of the mounting shaft is fixedly connected to a blade shaft, a rotating sleeve is provided on the partition, the blade shaft is rotatably connected to the rotating sleeve, and three blades are fixedly connected in a circumferential array on the blade shaft.

[0007] As a preferred solution of this embodiment, the cross-section of the bottom end of the installation box is a triangular structure, and the connecting axis is perpendicular to the installation axis.

[0008] As a preferred solution of this embodiment, a first motor is fixedly connected to the feed pipe, and an output end of the first motor is fixedly connected to the connecting shaft.

[0009] As a preferred solution of this embodiment, the cross-section of the support leg is a T-shaped structure, and a plurality of through holes are provided at the bottom end of the support leg.

[0010] As a preferred solution of this embodiment, a sealing ring is provided on the outside of the air inlet pipe, and three of the sealing rings are fixedly connected to the outer wall of the outer shell.

[0011] As a preferred solution of this embodiment, a screening structure is provided at the bottom end of the feed pipe, and the screening structure includes a screening box, a filter screen is slidably connected to the interior of the screening box, a sealing gasket is fixedly connected to the filter screen, and the sealing gasket is in conflict with the screening box.

[0012] As a preferred solution of this embodiment, the screening box is rotatably connected to a rotating shaft, the rotating shaft is fixedly connected to a mounting bar, the mounting bar is threadedly connected to a screw, the screw is fixedly connected to a pad, the screening box and the filter are both provided with limiting grooves, and the pad is plugged into the limiting grooves.

[0013] As a preferred solution of this embodiment, the end of the screw is slidably connected to a rotating rod, and the cross-section of the rotating rod is an "I"-shaped structure.

[0014] As a preferred solution of this embodiment, the bottom end of the screening box is fixedly connected to a feed pipe and a return pipe, the bottom end of the screening box is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a sealing cover, and the sealing cover is rotatably connected to the screening box.

[0015] As a preferred solution of this embodiment, a heat exchange structure is provided on the outer shell, and the heat exchange structure includes a heat exchange jacket. The outer shell is provided with a heat exchange jacket, and the heat exchange jacket is provided with a heat exchange inlet pipe and a heat exchange outlet pipe.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The utility model can change the flow direction of silicon powder by setting the mixing structure, so that the silicon powder and methyl chloride are fully mixed, thus making the reaction more complete, improving the utilization rate of silicon powder, and further improving the production efficiency of organic silicon. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 for Figure 1 The enlarged structural diagram of part A is shown;

[0020] Figure 3 This is a schematic diagram of the connection structure between the partition and the mixing structure of the utility model;

[0021] Figure 4 for Figure 3 The enlarged structural diagram of part B is shown;

[0022] Figure 5 for Figure 3 The enlarged structural diagram of part C is shown;

[0023] Figure 6 This is a schematic diagram of the connection structure between the blade shaft and the blades of the utility model;

[0024] Figure 7 for Figure 6 The enlarged structural diagram of part D is shown.

[0025] In the figure: 1. Support leg; 2. Outer shell; 3. Feed pipe; 4. Discharge pipe; 5. Screening structure; 501. Screening box; 502. Filter screen; 503. Sealing pad; 504. Rotating shaft; 505. Mounting bar; 506. Screw; 507. Rotating rod; 508. Pad; 509. Limiting groove; 6. Mixing structure; 601. First motor; 602. Connecting shaft; 603. Mounting box; 604. First bevel gear; 605, second bevel gear; 606, mounting shaft; 607, impeller shaft; 608, impeller blade; 609, rotating sleeve; 7, heat exchange structure; 701, heat exchange sleeve; 702, heat exchange inlet pipe; 703, heat exchange outlet pipe; 8, sealing ring; 9, air inlet pipe; 10, feed pipe; 11, return pipe; 12, second motor; 13, sealing cover; 14, through hole; 15, partition; 16, sieve hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 efforts are within the scope of protection of the present invention.

[0027] See also Figures 1 to 7As shown, an embodiment of the present invention provides a fluidized bed structure for the production of organic silicon, comprising three support legs 1, the top ends of the three support legs 1 being fixedly connected to an outer shell 2, the bottom end of the outer shell 2 being provided with a feed pipe 3, the top end of the outer shell 2 being provided with an exhaust pipe 4, three air inlet pipes 9 being provided in a circumferential array on the outer shell 2, the interior of the outer shell 2 being provided with a partition 15, the partition 15 being provided with a plurality of sieve holes 16, and a mixing structure 6 being provided on the feed pipe 3. The mixing structure 6 comprises a mounting box 603, the interior of the feed pipe 3 being fixedly connected to the mounting box 603, the interior of the mounting box 603 being rotatably connected to a connecting shaft 602, the end of the connecting shaft 602 being fixedly connected to a first bevel gear 604, the mounting box 603 being rotatably connected to a mounting shaft 606, one end of which being fixedly connected to a second bevel gear 605, the first bevel gear 604 being meshed with the second bevel gear 605. The other end of the mounting shaft 606 is fixedly connected to a blade shaft 607. A rotating sleeve 609 is provided on the partition 15. The blade shaft 607 is rotatably connected to the rotating sleeve 609. Three blades 608 are fixedly connected to the blade shaft 607 in a circular array. The bottom cross-section of the mounting box 603 is triangular. The connecting shaft 602 is perpendicular to the mounting shaft 606. A first motor 601 is fixedly connected to the feed pipe 3. The output end of the first motor 601 is fixedly connected to the connecting shaft 602. The mixing structure 6 can redirect the flow of silicon powder, allowing it to fully mix with methyl chloride, thereby promoting a more complete reaction and improving silicon powder utilization, thereby increasing the efficiency of organosilicon production.

[0028] Specifically in this embodiment, when in use, the support leg 1 is fixed to the ground through the through hole 14, and silicon powder is fed into the feeding pipe 10. After being filtered by the filter 502 inside the screening box 501, the silicon powder enters the interior of the feeding pipe 3, and the silicon powder with the appropriate particle size enters the reaction zone inside the outer shell 2 from the interior of the feeding pipe 3. Chloromethane gas is introduced through the air inlet pipe 9, and the first motor 601 is started at the same time. The first motor 601 drives the connecting shaft 602 to rotate, and the connecting shaft 602 rotates and drives the first bevel gear 604 to rotate. The first bevel gear 604 rotates and drives the second bevel gear 605 to rotate. The second bevel gear 605 rotates and drives the installation shaft 606 to rotate. The installation shaft 606 rotates and drives the blade shaft 607 to rotate in the rotating sleeve 609. The blade shaft 607 rotates and drives the blade 608 to rotate, thereby changing The rising gas and silicon powder flow, are fully mixed with the chloroform gas filled in the air inlet pipe 9, and then a contact exothermic reaction occurs under the action of the catalyst. The reaction product rises from the sieve hole 16 on the partition 15 and is finally discharged from the discharge pipe 4. The heat exchange medium enters from the heat exchange inlet pipe 702, enters the heat exchange jacket 701, takes away the heat generated by the reaction and is discharged from the heat exchange outlet pipe 703, thereby improving the energy utilization rate. Silicon powder with larger particles is intercepted by the filter 502. When the silicon powder with larger particles needs to be reused, the second motor 12 can be started to rotate the sealing cover 13 180° so that the sealing cover 13 covers the channel of the feed pipe 10. At the same time, the channel of the return pipe 11 is opened, and the return pipe 11 is connected to the circulation device. Silicon powder with larger particles is extracted and recycled for processing and grinding, thereby improving the utilization rate of silicon powder.

[0029] See also Figures 1 to 7 As shown, the support leg 1 has a T-shaped cross-section, with multiple through-holes 14 provided at the bottom end thereof, through which bolts are fitted to secure the support leg 1. The air intake pipe 9 is sheathed with sealing rings 8, three of which are fixedly attached to the outer wall of the outer shell 2, sealing the air intake pipe 9.

[0030] See also Figures 1 to 7As shown, the bottom end of the feed pipe 3 is provided with a screening structure 5, which includes a screening box 501. A filter screen 502 is slidably connected to the interior of the screening box 501. A sealing gasket 503 is fixedly connected to the filter screen 502, and the sealing gasket 503 interferes with the screening box 501. A rotating shaft 504 is rotatably connected to the screening box 501, and a mounting bar 505 is fixedly connected to the rotating shaft 504. A screw 506 is threadedly connected to the mounting bar 505, and a pad 508 is fixedly connected to the screw 506. The screening box 501 and the filter screen 502 are both provided with a limiting groove 509. The pad 508 is plugged into the limiting groove 509. The end of the screw 506 is slidably connected to a rotating rod 507. The cross-section of the rotating rod 507 is an "I"-shaped structure. The screening structure 5 screens silicon powder of qualified diameter, thereby improving reaction efficiency. The bottom end of the screening box 501 is fixedly connected to a feed pipe 10 and a return pipe 11. A second motor 12 is also fixedly connected to the bottom end of the screening box 501. A sealing cover 13 is fixedly connected to the output end of the second motor 12. The sealing cover 13 is rotatably connected to the screening box 501. The second motor 12 drives the sealing cover 13 to rotate, thereby switching the feed and return states at the bottom end of the screening box 501. A heat exchange structure 7 is provided on the outer shell 2. The heat exchange structure 7 includes a heat exchange jacket 701. The outer shell 2 is provided with a heat exchange jacket 701, which is equipped with a heat exchange inlet pipe 702 and a heat exchange outlet pipe 703. The heat released by the reaction is reused through the heat exchange structure 7, thereby improving energy utilization.

[0031] Specifically in this embodiment, when it is necessary to replace the filter 502 with a different mesh size, the rotating rod 507 can be rotated, and the rotating rod 507 rotates to drive the screw 506 to rotate, and the screw 506 rotates to drive the pad 508 to no longer interfere with the limiting groove 509 on the filter 502. Then, the rotating shaft 504 is rotated 90°, and then the screw 506 is rotated again. The screw 506 drives the pad 508 to be inserted into the limiting groove 509 on the filter box 501, and no longer blocks the filter 502. At this time, the filter 502 can be pulled out and replaced, thereby improving the replacement efficiency of the filter 502.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A fluidized bed structure for producing organic silicon, comprising three supporting legs (1), the top ends of the three supporting legs (1) being fixedly connected to an outer shell (2), a feed pipe (3) being provided at the bottom end of the outer shell (2), and a discharge pipe (4) being provided at the top end of the outer shell (2), characterized in that: Three air inlet pipes (9) are arranged in a circumferential array on the outer shell (2), a partition (15) is provided inside the outer shell (2), a plurality of sieve holes (16) are provided on the partition (15), and a mixing structure (6) is provided on the feed pipe (3); The mixing structure (6) includes a mounting box (603), the interior of the feed pipe (3) is fixedly connected to the mounting box (603), the interior of the mounting box (603) is rotatably connected to a connecting shaft (602), the end of the connecting shaft (602) is fixedly connected to a first bevel gear (604), the mounting box (603) is rotatably connected to a mounting shaft (606), one end of the mounting shaft (606) is fixedly connected to a second bevel gear (605), the first bevel gear (604) is meshed with the second bevel gear (605), the other end of the mounting shaft (606) is fixedly connected to a blade shaft (607), a rotating sleeve (609) is provided on the partition (15), the blade shaft (607) is rotatably connected to the rotating sleeve (609), and three blades (608) are fixedly connected in a circumferential array on the blade shaft (607).

2. The fluidized bed structure for organosilicon production according to claim 1, characterized in that: The bottom cross-section of the installation box (603) is a triangular structure, and the connection axis (602) is perpendicular to the installation axis (606).

3. The fluidized bed structure for organosilicon production according to claim 1, characterized in that: A first motor (601) is fixedly connected to the feed pipe (3), and an output end of the first motor (601) is fixedly connected to a connecting shaft (602).

4. The fluidized bed structure for organosilicon production according to claim 1, characterized in that: The cross section of the support leg (1) is a T-shaped structure, and a plurality of through holes (14) are provided at the bottom end of the support leg (1).

5. The fluidized bed structure for organosilicon production according to claim 1, characterized in that: The air inlet pipe (9) is externally sleeved with a sealing ring (8), and three of the sealing rings (8) are fixedly connected to the outer wall of the outer shell (2).

6. The fluidized bed structure for organosilicon production according to claim 1, characterized in that: A screening structure (5) is provided at the bottom end of the feed pipe (3), and the screening structure (5) includes a screening box (501), a filter screen (502) is slidably connected to the interior of the screening box (501), a sealing gasket (503) is fixedly connected to the filter screen (502), and the sealing gasket (503) is in conflict with the screening box (501).

7. The fluidized bed structure for organosilicon production according to claim 6, characterized in that: The filter box (501) is rotatably connected to a rotating shaft (504), the rotating shaft (504) is fixedly connected to a mounting bar (505), the mounting bar (505) is threadedly connected to a screw rod (506), the screw rod (506) is fixedly connected to a cushion block (508), the filter box (501) and the filter screen (502) are both provided with a limiting groove (509), and the cushion block (508) is plugged into the limiting groove (509).

8. The fluidized bed structure for organosilicon production according to claim 7, characterized in that: The end of the screw rod (506) is slidably connected to a rotating rod (507), and the cross section of the rotating rod (507) is an "I"-shaped structure.

9. The fluidized bed structure for organosilicon production according to claim 8, characterized in that: The bottom end of the screening box (501) is fixedly connected to a feeding pipe (10) and a returning pipe (11), the bottom end of the screening box (501) is fixedly connected to a second motor (12), the output end of the second motor (12) is fixedly connected to a sealing cover (13), and the sealing cover (13) is rotatably connected to the screening box (501).

10. The fluidized bed structure for organosilicon production according to claim 1, characterized in that: The outer shell (2) is provided with a heat exchange structure (7), the heat exchange structure (7) comprises a heat exchange jacket (701), the outer shell of the outer shell (2) is provided with a heat exchange jacket (701), and the heat exchange jacket (701) is provided with a heat exchange inlet pipe (702) and a heat exchange outlet pipe (703).

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