A production process and system for 2,3-dimethyl-2,3-diphenylbutane

Abstract

The present invention discloses a production process and system for 2,3-dimethyl-2,3-diphenylbutane, including a reaction kettle, a crystallization kettle, a recovery kettle and a filtering and drying mechanism. The filtering and drying mechanism includes an annular water collecting tank, a rotary drive box and an annular drying tray. The output end of the rotary drive box is connected with a rotating support rod, the rotating support rod penetrates through the annular drying tray, and the top end of the rotating support rod is fixed with a first rotary joint. The top end of the first rotary joint is rotatably connected with a liquid inlet conduit, and a plurality of filtering barrels are connected around the first rotary joint. In the present invention, the raw materials are reacted in the reaction kettle and then fed into the crystallization kettle for crystallization. Then, the near-solution is fed into the filtering barrels through the liquid inlet conduit. The liquid in the filtering barrels is thrown out by the action of centrifugal force, and the solid crystals are filtered out and remain in the filtering barrels. Then, the wet crystals are poured into the annular drying tray and dried by blowing hot air, thereby completing the drying of the crystals. The integration degree is higher, and the production efficiency can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of 2,3-dimethyl-2,3-diphenylbutane production, and in particular to a 2,3-dimethyl-2,3-diphenylbutane production process and system. Background Art

[0002] 2,3-Dimethyl-2,3-diphenylbutane, also known as dimethicone, has a chemical formula of C20H24. It is a colorless to pale yellow solid with a special aromatic odor. It can be used as a non-peroxide high-energy plastic initiator, grafting agent, and flame retardant additive.

[0003] When producing 2,3-dimethyl-2,3-diphenylbutane, the reaction product needs to be crystallized, and the crystallization solution needs to be filtered, centrifuged and dried. In the prior art, the process is mainly carried out by a centrifuge and a dryer to obtain dry product crystals. In the prior art, since the solution needs to be centrifuged and filtered first, and then transferred to a dryer for drying, the production efficiency is low, and the product is easily contaminated during the transfer process. Therefore, an integrated filtering and drying device is needed to improve the production efficiency of the product. Summary of the invention

[0004] In order to solve the problems mentioned in the above background technology, the present invention provides a 2,3-dimethyl-2,3-diphenylbutane production process and system.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A 2,3-dimethyl-2,3-diphenylbutane production process comprises the following steps:

[0007] S1: Reaction

[0008] Add di-tert-butyl peroxide and isopropylbenzene to the reaction kettle with a diaphragm pump, stir and heat to 125-150°C to produce a fraction, react at normal pressure for 24 hours, evaporate the generated tert-butyl alcohol during the reaction, then cool to 70°C and transport to the crystallization kettle through a closed pipeline with a diaphragm pump;

[0009] S2: Cooling crystallization

[0010] Cooling water is used to cool the crystallization kettle to 20°C for crystallization, and the material is transported to the filtration and drying mechanism through a closed pipeline for solid-liquid separation and drying to obtain the finished product, and the mother liquor is recovered for reuse;

[0011] S3: Fractionation and distillation

[0012] The mother liquor is pumped into a recovery kettle through a closed pipe by a diaphragm pump, and isopropylbenzene is recovered by negative pressure distillation, and tert-butyl alcohol is recovered for reuse.

[0013] Reaction equation

[0014]

[0015] A 2,3-dimethyl-2,3-diphenylbutane production system comprises a reaction kettle, a crystallization kettle, a recovery kettle and a filtering and drying mechanism, wherein the filtering and drying mechanism comprises an annular water collecting tank, a rotary drive box and an annular drying plate, wherein the output end of the rotary drive box is connected with a rotating support rod, the rotating support rod penetrates the annular drying plate, and a first rotating joint is fixed to the top end of the rotating support rod, the top end of the first rotating joint is rotatably connected with a liquid inlet conduit, a plurality of filter barrels are connected around the first rotating joint, and the interior of the filter barrel is communicated with the liquid inlet conduit.

[0016] Preferably, a plurality of telescopic tubes are fixed to the outside of the first rotary joint, the telescopic ends of the telescopic tubes are fixed and connected to the top of the filter barrel, and a horizontal driving mechanism is installed on the fixed end of the telescopic tubes, and the horizontal driving mechanism is used to drive the telescopic horizontal movement.

[0017] Preferably, the horizontal driving mechanism includes a support plate, a moving part is slidably installed on the top of the support plate through a guide rail, a threaded rod is also rotatably installed on the top of the support plate, the moving part is threadedly installed on the outside of the moving part, and the moving part is fixed to the telescopic end of the telescopic catheter by a connecting frame.

[0018] Preferably, one of the threaded rods is driven to rotate by a rotary motor, and a first spur gear is fixed to one side of the threaded rod close to the first rotary joint, a synchronous gear ring is rotatably mounted on the first rotary joint, and a plurality of first spur gears are all meshed with the synchronous gear ring.

[0019] Preferably, a first vertical shaft is rotatably installed inside the filter barrel, the bottom end of the first vertical shaft extends to the discharge port of the filter barrel and is installed with a discharge screw, and a cleaning scraper is fixed outside the first vertical shaft, and the cleaning scraper contacts the inner wall of the filter barrel.

[0020] Preferably, an annular baffle is fixed on the annular water collecting trough, and the height of the annular baffle matches the bottom end of the filter barrel. When the filter barrel moves to just above the annular baffle, the annular baffle will block the discharge port of the filter barrel.

[0021] Preferably, the outer portion of the rotating support rod is rotatably connected to a second rotating joint, and an air inlet pipe is provided at the bottom end of the second rotating joint, and the air inlet pipe is connected to the hot air blower.

[0022] Preferably, a plurality of stir-frying rods are fixed around the rotating support rod, and a plurality of stir-frying branches are fixed at the bottom end of the stir-frying rod.

[0023] Preferably, the interior of the stir-fry rod is hollow, and the stir-fry rod is connected to the air inlet pipe through a second rotary joint, and a plurality of air outlets are fixed to the bottom end of the stir-fry rod.

[0024] Preferably, the stir-fry branches and the air outlets are spaced in sequence and distributed equidistantly.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The horizontal driving mechanism can drive the filter barrel to move horizontally, so that the filter barrel can move closer to and farther from the rotating support rod, so that when discharging wet crystals, the bottom discharge port of the filter barrel can move along the radial direction relative to the annular drying plate, so that the wet crystals can be poured more evenly into the annular drying plate, which can improve the uniformity of crystal distribution, so that the crystals can be dried more evenly during the drying process, thereby improving the drying efficiency;

[0027] 2. When the rotating motor is turned on, it can drive one of the threaded rods to rotate, and then through the meshing of the first spur gear and the synchronous gear ring, it can drive multiple threaded rods to rotate synchronously. When the threaded rod rotates, it can drive the moving part to move horizontally along the axial direction of the threaded rod, thereby achieving the purpose of driving multiple filter barrels to move horizontally synchronously, so that the wet crystals can be poured more evenly into the annular drying plate;

[0028] 3. When the first vertical axis rotates, it can drive the cleaning scraper to move and scrape the inner wall of the filter barrel, so as to scrape off the wet crystals adhering to the inner wall of the filter barrel, so that the wet crystals can fall from the discharge port. The rotation of the discharge screw can accelerate the wet crystals to fall from the discharge port and accelerate the discharge;

[0029] 4. Due to the presence of the annular baffle, when the filter barrel moves to the position farthest from the rotating support rod, the discharge port of the filter barrel is blocked. At this time, the rotating support rod is driven to rotate by the rotating drive box, thereby driving the filter barrel to follow the high-speed rotation, so that the liquid in the filter barrel is thrown out by centrifugal force. During the centrifugal process, the material in the filter barrel will not flow out through the discharge port. When discharging crystals, it is only necessary to drive the filter barrel toward the rotating support rod so that the discharge port of the filter barrel is separated from the annular baffle, and the crystals can fall into the annular drying plate;

[0030] 5. The interior of the stir-fry rod is hollow, and the stir-fry rod is connected to the air inlet pipe through the second rotating joint. A plurality of air outlets are fixed to the bottom end of the stir-fry rod. The hot air blower generates hot air, which enters the stir-fry rod through the second rotating joint and is then blown out through the air outlet, thereby drying the crystals. The stir-fry rod can stir-fry the crystals, thereby ensuring that the hot air can blow to the crystals on the lower layer, thereby improving the drying efficiency.

[0031] 6. After the raw materials react in the reactor, they are passed into the crystallization kettle for crystallization, and then the solution is passed into the filter barrel through the liquid inlet pipe. The liquid in the filter barrel is thrown out by centrifugal force, and the solid crystals are filtered out and remain in the filter barrel. Then the wet crystals are poured into the annular drying plate and dried with hot air, thereby completing the drying of the crystals. The degree of integration is higher, which can effectively improve the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A cross-sectional view of the filter-drying mechanism of the present invention from a first viewing angle;

[0034] Figure 2 A cross-sectional view of the filtering and drying mechanism of the present invention from a second viewing angle;

[0035] Figure 3 A three-dimensional diagram of the filter drying mechanism of the present invention;

[0036] Figure 4 It is a schematic diagram of the distribution position of the filter barrels in the filter drying mechanism of the present invention;

[0037] Figure 5 It is an enlarged detail view of the position of the annular drying plate in the filter-drying mechanism of the present invention;

[0038] Figure 6 It is an enlarged detail view of the position of the telescopic conduit in the filter-drying mechanism of the present invention from the main perspective;

[0039] Figure 7 It is a three-dimensional enlarged view of the position of the telescopic conduit in the filter-drying mechanism of the present invention;

[0040] Figure 8 It is an enlarged detail view of the position of the telescopic conduit in the filter-drying mechanism of the present invention from a rear perspective;

[0041] Fig. 9 It is an enlarged cross-sectional view of the filter barrel in the filter drying mechanism of the present invention;

[0042] Fig.10 It is an enlarged detail view of the second vertical axis position in the filtering and drying mechanism of the present invention;

[0043] Fig.11 It is an enlarged detail view of the U-shaped rack in the filter drying mechanism of the present invention;

[0044] Fig.12 is a flow chart of the present invention;

[0045] Fig.13 It is a flowchart of the present invention.

[0046] In the figure: 1 reaction kettle, 2 crystallization kettle, 3 recovery kettle, 4 filtering and drying mechanism, 401 annular water collecting tank, 402 annular drying plate, 403 rotating drive box, 404 rotating support rod, 405 liquid inlet conduit, 406 first rotating joint, 407 filter barrel, 408 annular baffle, 5 telescopic conduit, 501 support plate, 502 moving part, 503 threaded rod, 504 rotating motor, 505 first straight gear, 506 connecting frame, 507 synchronous gear Ring, 6 first vertical axis, 601 discharging screw, 602 cleaning scraper, 603 second bevel gear, 604 second vertical axis, 605 first bevel gear, 606 transmission horizontal axis, 607 third bevel gear, 608 first one-way transmission, 6081 second spur gear, 609 second one-way transmission, 6091 third spur gear, 7 U-shaped rack, 8 second rotary joint, 801 air inlet pipe, 802 stir-fry rod, 803 stir-fry branch, 804 air outlet. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 creative work are within the scope of protection of the present invention.

[0048] Example 1

[0049] Reference Figure 1-12 A 2,3-dimethyl-2,3-diphenylbutane production system comprises a reaction kettle 1, a crystallization kettle 2, a recovery kettle 3 and a filtering and drying mechanism 4, characterized in that the filtering and drying mechanism 4 comprises an annular water collecting tank 401, a rotating driving box 403 and an annular drying plate 402, the output end of the rotating driving box 403 is connected with a rotating support rod 404, the rotating support rod 404 passes through the annular drying plate 402, and a first rotating joint 406 is fixed to the top of the rotating support rod 404, the top of the first rotating joint 406 is rotatably connected with a liquid inlet conduit 405, a plurality of filter barrels 407 are connected around the first rotating joint 406, and the interior of the filter barrel 407 is communicated with the liquid inlet conduit 405.

[0050] After reacting in the reactor 1, the raw materials are introduced into the crystallization reactor 2 for crystallization, and then the near solution is introduced into the filter barrel 407 through the liquid inlet conduit 405. The rotating driving box 403 drives the rotating support rod 404 to rotate, thereby driving the filter barrel 407 to follow the high-speed rotation, so that the liquid in the filter barrel 407 is thrown out by centrifugal force and falls into the annular water collecting tank 401. The solid crystals are filtered out and remain in the filter barrel 407. Then the discharge port of the filter barrel 407 is opened, and the wet crystals are poured into the annular drying plate 402 to be dried with hot air, thereby completing the drying of the crystals.

[0051] Example 2

[0052] Reference Figure 1-12 The difference between this embodiment and the first embodiment is that a plurality of telescopic conduits 5 are fixed to the outside of the first rotary joint 406, the telescopic ends of the telescopic conduits 5 are fixed to and communicated with the top of the filter barrel 407, and a horizontal driving mechanism is installed on the fixed end of the telescopic conduit 5, and the horizontal driving mechanism is used to drive the telescopic horizontal movement;

[0053] The horizontal driving mechanism can drive the filter barrel 407 to move horizontally, so that the filter barrel 407 can approach and move away from the rotating support rod 404, so that when discharging wet crystals, the bottom discharge port of the filter barrel 407 can move along the radial direction relative to the annular drying plate 402, so that the wet crystals can be poured more evenly into the annular drying plate 402, which can improve the uniformity of crystal distribution, so that the crystals can be dried more evenly during the drying process, thereby improving the drying efficiency.

[0054] Among them, the horizontal driving mechanism includes a support plate 501, a moving part 502 is slidably installed on the top of the support plate 501 through a guide rail, a threaded rod 503 is also rotatably installed on the top of the support plate 501, the moving part 502 is threadedly installed on the outside of the moving part 502, and the moving part 502 is fixed to the telescopic end of the telescopic guide tube 5 by a connecting frame 506.

[0055] Among them, one of the threaded rods 503 is driven to rotate by a rotary motor 504, and a first spur gear 505 is fixed to one side of the threaded rod 503 close to the first rotary joint 406, a synchronous gear ring 507 is rotatably mounted on the first rotary joint 406, and a plurality of first spur gears 505 are all meshed with the synchronous gear ring 507;

[0056] When the rotating motor 504 is turned on, it can drive one of the threaded rods 503 to rotate, and then the engagement of the first spur gear 505 and the synchronous gear ring 507 can drive multiple threaded rods 503 to rotate synchronously. When the threaded rod 503 rotates, it can drive the moving part 502 to move horizontally along the axial direction of the threaded rod 503, thereby achieving the purpose of driving multiple filter barrels 407 to move horizontally synchronously, so that the wet crystals can be poured more evenly into the annular drying plate 402.

[0057] Example 3

[0058] Reference Figure 1-12 The difference between this embodiment and embodiment 2 is that a first vertical shaft 6 is rotatably installed inside the filter barrel 407, the bottom end of the first vertical shaft 6 extends to the discharge port of the filter barrel 407 and is installed with a discharge screw 601, and a cleaning scraper 602 is fixed to the outside of the first vertical shaft 6, and the cleaning scraper 602 contacts the inner wall of the filter barrel 407;

[0059] When the first vertical shaft 6 rotates, it can drive the cleaning scraper 602 to move and scrape the inner wall of the filter barrel 407, so as to scrape off the moist crystals stuck on the inner wall of the filter barrel 407, so that the moist crystals can fall from the discharge port. The rotation of the discharge screw 601 can accelerate the falling of the moist crystals from the discharge port and accelerate the discharge.

[0060] Among them, an annular baffle 408 is fixed on the annular water collecting tank 401, and the height of the annular baffle 408 matches the bottom end of the filter barrel 407. When the filter barrel 407 moves to the top of the annular baffle 408, the annular baffle 408 blocks the discharge port of the filter barrel 407;

[0061] Due to the presence of the annular baffle 408, when the filter barrel 407 moves to the position farthest from the rotating support rod 404, the discharge port of the filter barrel 407 is blocked. At this time, the rotating support rod 404 is driven to rotate by the rotating drive box 403, thereby driving the filter barrel 407 to follow the high-speed rotation, so that the liquid in the filter barrel 407 is thrown out by centrifugal force. During the centrifugal process, the material in the filter barrel 407 will not flow out through the discharge port. When discharging crystals, it is only necessary to drive the filter barrel 407 toward the rotating support rod 404, so that the discharge port of the filter barrel 407 is separated from the annular baffle 408, and the crystals can fall into the annular drying plate 402.

[0062] The outer portion of the rotating support rod 404 is rotatably connected to a second rotating joint 8, and an air inlet pipe 801 is provided at the bottom end of the second rotating joint 8, and the air inlet pipe 801 is connected to the hot air blower.

[0063] Among them, a plurality of stir-frying rods 802 are fixed around the rotating support rod 404, and a plurality of stir-frying branches 803 are fixed at the bottom end of the stir-frying rod 802.

[0064] Among them, the interior of the stir-fry rod 802 is hollow, and the stir-fry rod 802 is connected to the air inlet pipe 801 through the second rotating joint 8. A plurality of air outlets 804 are fixed to the bottom end of the stir-fry rod 802. The hot air blower generates hot air, and the hot air enters the stir-fry rod 802 through the second rotating joint 8, and is then blown out through the air outlet 804, thereby drying the crystals. The stir-fry rod 802 can stir-fry the crystals, thereby ensuring that the hot air can blow to the crystals located at the lower layer, thereby improving the drying efficiency.

[0065] The stir-fry branch 803 and the air outlet 804 are spaced apart and distributed equidistantly.

[0066] Among them, the second vertical shaft 604 is rotatably installed on the upper part of the filter barrel 407, and the first bevel gear 605 is fixed at the bottom end of the second vertical shaft 604. The second bevel gear 603 is fixed on the outside of the first vertical shaft 6 near the top position. A transmission horizontal shaft 606 is provided between the first vertical shaft 6 and the second vertical shaft 604, and third bevel gears 607 are fixed at both ends of the transmission horizontal shaft 606. The two third bevel gears 607 are respectively meshed with the first bevel gear 605 and the second bevel gear 603. The top end of the second vertical shaft 604 extends to the outside of the filter barrel 407 and is respectively installed with a second spur gear 6081 and a third spur gear 6091 through a first one-way transmission 608 and a second one-way transmission 609. A ratchet and pawl mechanism is provided inside the first one-way transmission 608 and the second one-way transmission 609, and its outer ring and inner ring are directly matched through a ratchet and a pawl. When the outer ring rotates in one direction, it can drive the inner ring to rotate. When the outer ring rotates in another direction, the outer ring cannot drive the inner ring to rotate. The specific principle is as follows. The patent of CN202965934U has been disclosed, and the second vertical shaft 604 can only be driven to rotate when the second spur gear 6081 and the third spur gear 6091 rotate clockwise. A U-shaped rack 7 is connected to the fixed end of the telescopic guide tube 5 through a bracket. The U-shaped rack 7 is provided with a first meshing tooth 702 and a second meshing tooth 701. The first meshing tooth 702 and the second meshing tooth 701 have different heights and respectively mesh with the second spur gear 6081 and the third spur gear 6091. Since the first meshing tooth 702 and the second meshing tooth 701 are located on both sides of the second spur gear 6081 and the third spur gear 6091, when the U-shaped rack 7 reciprocates horizontally, it can always drive the first meshing tooth 702 and the second meshing tooth 701 to rotate clockwise and the other to rotate counterclockwise, thereby being able to always drive the second vertical shaft 604 to rotate in one direction, and drive the discharge screw 601 to rotate in one direction and accelerate the discharge of solid materials filtered out of the filter barrel 407.

[0067] Example 4

[0068] A 2,3-dimethyl-2,3-diphenylbutane production process comprises the following steps:

[0069] S1: Reaction

[0070] Add di-tert-butyl peroxide and isopropylbenzene into reactor 1 with a diaphragm pump, stir and heat to 125-150°C to produce a fraction, react at normal pressure for 24 hours, evaporate the generated tert-butyl alcohol during the reaction, cool to 70°C, and transport to crystallization reactor 2 through a closed pipeline with a diaphragm pump;

[0071] S2: Cooling crystallization

[0072] The temperature is lowered to 20°C in the crystallization kettle 2 with cooling water to perform crystallization, and the material is transported to the filtering and drying mechanism 4 through a closed pipeline to perform solid-liquid separation and drying to obtain a finished product, and the mother liquor is recovered for reuse;

[0073] S3: Fractionation and distillation

[0074] The mother liquor is pumped into the recovery kettle 3 through a closed pipe by a diaphragm pump, and isopropylbenzene is recovered by negative pressure distillation, and tert-butyl alcohol is recovered for reuse.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0076] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0078] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A 2,3-dimethyl-2,3-diphenylbutane production system, comprising a reaction kettle (1), a crystallization kettle (2), a recovery kettle (3) and a filtering and drying mechanism (4), characterized in that: The filtering and drying mechanism (4) comprises an annular water collecting tank (401), a rotating driving box (403) and an annular drying plate (402); the output end of the rotating driving box (403) is connected to a rotating support rod (404); the rotating support rod (404) passes through the annular drying plate (402); a first rotating joint (406) is fixed to the top end of the rotating support rod (404); the top end of the first rotating joint (406) is rotatably connected to a liquid inlet conduit (405); a plurality of filtering barrels (407) are connected around the first rotating joint (406); and the interior of the filtering barrel (407) is in communication with the liquid inlet conduit (405); A plurality of telescopic conduits (5) are fixed to the outside of the first rotary joint (406); the telescopic ends of the telescopic conduits (5) are fixed to and communicated with the top end of the filter barrel (407); a horizontal driving mechanism is installed on the fixed end of the telescopic conduits (5); the horizontal driving mechanism is used to drive the telescopic horizontal movement; The horizontal driving mechanism comprises a support plate (501), a moving member (502) is slidably mounted on the top of the support plate (501) via a guide rail, a threaded rod (503) is rotatably mounted on the top of the support plate (501), the moving member (502) is threadedly mounted on the outside of the moving member (502), and the moving member (502) and the telescopic end of the telescopic guide tube (5) are fixed via a connecting frame (506); One of the threaded rods (503) is driven to rotate by a rotating motor (504), and a first spur gear (505) is fixed to a side of the threaded rod (503) close to the first rotating joint (406), a synchronous gear ring (507) is rotatably mounted on the first rotating joint (406), and a plurality of first spur gears (505) are all meshed with the synchronous gear ring (507); A first vertical shaft (6) is rotatably mounted inside the filter barrel (407), and the bottom end of the first vertical shaft (6) extends to the discharge port of the filter barrel (407) and is mounted with a discharge screw (601); A second vertical shaft (604) is rotatably mounted on the filter barrel (407), a first bevel gear (605) is fixed to the bottom end of the second vertical shaft (604), a second bevel gear (603) is fixed to the outside of the first vertical shaft (6) near the top end, a transmission horizontal shaft (606) is provided between the first vertical shaft (6) and the second vertical shaft (604), third bevel gears (607) are fixed to both ends of the transmission horizontal shaft (606), the two third bevel gears (607) respectively mesh with the first bevel gear (605) and the second bevel gear (603), the top end of the second vertical shaft (604) extends to the outside of the filter barrel (407) and is respectively mounted with a second spur gear (6081) and a third spur gear (6091) via a first one-way transmission device (608) and a second one-way transmission device (609), and a U gear is connected to the fixed end of the telescopic guide tube (5) via a bracket. The U-shaped rack (7) is provided with a first meshing tooth (702) and a second meshing tooth (701). The first meshing tooth (702) and the second meshing tooth (701) have different heights and mesh with the second spur gear (6081) and the third spur gear (6091) respectively. Since the first meshing tooth (702) and the second meshing tooth (701) are located on both sides of the second spur gear (6081) and the third spur gear (6091), when the U-shaped rack (7) is in horizontal reciprocating motion, it can always drive the first meshing tooth (702) and the second meshing tooth (701) to rotate clockwise and the other to rotate counterclockwise, thereby always driving the second vertical shaft (604) to rotate in one direction, and driving the discharge screw (601) to rotate in one direction and accelerating the discharge of solid materials filtered out of the filter barrel (407).

2. A 2,3-dimethyl-2,3-diphenylbutane production system according to claim 1, characterized in that: A cleaning scraper (602) is fixed to the outside of the first vertical shaft (6), and the cleaning scraper (602) is in contact with the inner wall of the filter barrel (407).

3. A 2,3-dimethyl-2,3-diphenylbutane production system according to claim 2, characterized in that: An annular baffle (408) is fixed on the annular water collecting trough (401), and the height of the annular baffle (408) matches the bottom end of the filter barrel (407). When the filter barrel (407) moves to the top of the annular baffle (408), the annular baffle (408) blocks the discharge port of the filter barrel (407).

4. A 2,3-dimethyl-2,3-diphenylbutane production system according to claim 1, characterized in that: The outside of the rotating support rod (404) is rotatably connected to a second rotating joint (8), and an air intake pipe (801) is provided at the bottom end of the second rotating joint (8), and the air intake pipe (801) is connected to the hot air blower.

5. A 2,3-dimethyl-2,3-diphenylbutane production system according to claim 4, characterized in that: A plurality of stir-frying rods (802) are fixed around the rotating support rod (404), and a plurality of stir-frying branches (803) are fixed at the bottom ends of the stir-frying rods (802).

6. A 2,3-dimethyl-2,3-diphenylbutane production system according to claim 5, characterized in that: The interior of the stir-fry rod (802) is hollow, and the stir-fry rod (802) is connected to the air inlet pipe (801) via a second rotating joint (8), and a plurality of air outlets (804) are fixed to the bottom end of the stir-fry rod (802).

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