Catalytic reaction device for asymmetric carbonate synthesis

Abstract

The catalytic reaction device comprises a support, a reaction kettle is fixedly installed at the top of the support, a rotating and stirring dispersion mechanism and a bottom dispersing mechanism are arranged in the reaction kettle, the rotating and stirring dispersion mechanism comprises a retention plate arranged on the inner wall of the reaction kettle, the retention plate is arranged in a horizontal state, and the bottom dispersing mechanism is arranged at the bottom of the reaction kettle. A dispersion cylinder is rotatably mounted on the inner wall of the retention plate, the dispersion cylinder is polygonal, a gear ring is fixedly mounted on the outer wall of the dispersion cylinder, the gear ring is rotatably mounted at the top of the retention plate, and the gear ring is annular; according to the invention, a catalyst is put into the dispersion cylinder, the dispersion cylinder is rotated, the spreading plate on the outer side is opened, and the bottom is also opened synchronously, so that the catalyst is dispersed and spread, the catalyst can be uniformly distributed, and meanwhile, the catalyst is uniformly pressed and mixed through a structure capable of pressing the spread catalyst; the effect of the catalytic reaction for asymmetric carbonate synthesis can be conveniently improved.

Description

Technical Field

[0001] The present invention relates to the technical field of esterification reaction devices, and more specifically, to a catalytic reaction device for synthesizing asymmetric carbonate esters. Background Art

[0002] Ethyl methyl carbonate can be mixed with organic solvents such as alcohols, ketones, and esters in any proportion and is an excellent solvent. Ethyl methyl carbonate has both methyl and ethyl groups in its molecular structure, so it has the properties of dimethyl carbonate and diethyl carbonate and can be used as some special organic synthesis reagents. It is also a solvent for special spices. Its esterification reactor is a reactor used for esterification reactions and is widely used in the field of organic synthesis.

[0003] For example, utility model patent CN220589955U discloses an esterification reactor with a catalyst that can react quickly. After the reaction is completed, the driving device drives the driving shaft to rotate, so that the gear transmission ring rotates, so that the rotating plate and the ring rotate on the reactor body, so that the side rod, the scraper pad, and the scraper rod simultaneously fit on the inner surface of the reactor body and rotate in a circle, and the side wall and the bottom wall inside the reactor body are scraped and cleaned. During the reaction, it can be rotated and stirred synchronously. With the above structure, the inner wall of the reactor body can be automatically scraped and cleaned to prevent the organic compound liquid from remaining in the reactor body, reducing the labor intensity of the staff, and stirring can be performed synchronously when mixing the catalyst to make the catalyst fully contact with the liquid and accelerate the catalytic reaction of the catalyst;

[0004] However, the above-mentioned patent document only has the function of stirring and cleaning the catalyst sent into the reactor, and in actual use, there is no structure that can improve the effect of catalyst input. Therefore, the traditional method of adding the catalyst into the reactor is still mostly linear direct input, which causes the catalyst to accumulate on one side of the liquid surface in the reactor. Repeated stirring is required to make it evenly mixed, and the catalyst can only react partially first, and it is impossible to spread the catalyst to achieve the effect of uniform distribution and simultaneous reaction, which greatly affects the effect of the catalytic reaction for the synthesis of asymmetric carbonates. Summary of the invention

[0005] In order to overcome the above defects of the prior art, the present invention provides a catalytic reaction device for synthesizing asymmetric carbonates to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a catalytic reaction device for synthesizing asymmetric carbonates, comprising a bracket, a reactor is fixedly mounted on the top of the bracket, and a transfer and dispersion mechanism and a bottom dispersion mechanism are arranged inside the reactor;

[0007] The transfer and dispersion mechanism includes a fixing plate arranged on the inner wall of the reaction kettle, the fixing plate is arranged in a horizontal state, a dispersion cylinder is rotatably installed on the inner wall of the fixing plate, the dispersion cylinder is arranged in a polygonal shape, a gear ring is fixedly installed on the outer wall of the dispersion cylinder, the gear ring is rotatably installed on the top of the fixing plate, the gear ring is arranged in a circular ring shape, a belt gear is meshed on the outer wall of the gear ring, a reduction motor is arranged on the top of the belt gear, and the reduction motor is fixedly installed on the top of the reaction kettle.

[0008] In a preferred embodiment, the bottom outer wall of the dispersion cylinder is provided with a plurality of first spreading plates and a second spreading plate, and the plurality of first spreading plates and the second spreading plates are arranged equidistantly in a ring shape on the outer circumferential surface of the dispersion cylinder, the length of the first spreading plate is greater than the length of the second spreading plate, and the width of the first spreading plate is the same as the width of the inner wall of the dispersion cylinder.

[0009] In a preferred embodiment, a plurality of rotating shafts are fixedly mounted on the inner walls of the first and second spreading plates, and the plurality of rotating shafts are rotatably mounted on the inner walls of the dispersion cylinder, and the rotating shafts are arranged in a horizontal state.

[0010] In a preferred embodiment, push gears are fixedly installed on both sides of the multiple rotating shafts, and the push gears are arranged in a vertical state. A rack plate is commonly meshed on one side of the multiple push gears, and the rack plate is slidably installed on the outer wall of the dispersion cylinder, and the rack plate is arranged in a vertical state.

[0011] In a preferred embodiment, the tops of the plurality of rack plates are respectively hinged with sliders, the outer walls of the sliders are slidably mounted with lifting rods, the lifting rods are rotatably mounted on the outer wall of the dispersion cylinder, and the bottoms of the lifting rods are hinged with weight-supporting blocks.

[0012] In a preferred embodiment, the dispersing bottom mechanism includes a plurality of slots opened at the bottom of the dispersion cylinder, and the outer walls of two adjacent rack plates are fixedly installed with isotropic plates, and the plurality of isotropic plates are arranged in a horizontal state, and the bottoms of the plurality of isotropic plates are respectively fixedly installed with push frames, and the push frames are arranged in a U shape, and the tops of the plurality of push frames are fixedly installed with covering plates, and the covering plates are located at the tops of the plurality of slots, and the area of ​​the covering plates is larger than the area of ​​the slots.

[0013] In a preferred embodiment, a pressing mechanism is provided at the bottom of the retaining plate, and the pressing mechanism includes a plurality of pressure pads arranged on the top of the retaining plate, the plurality of pressure pads are arranged equidistantly in a ring shape on the top of the retaining plate, the tops of the plurality of pressure pads are arranged in a triangular shape, the tops of the pressure pads correspond to the bottom of the gear ring, and frame pull plates are fixedly installed on both sides of the bottoms of the plurality of pressure pads, the plurality of frame pull plates are slidably installed on the inner wall of the retaining plate, and support springs are fixedly installed on the outer walls of the plurality of frame pull plates, and the support springs are fixedly installed on the bottom of the retaining plate.

[0014] In a preferred embodiment, display boards are rotatably installed on both sides of the bottom of the plurality of the frame pull plates, the two display boards are symmetrically arranged, and top limit plates are provided on the tops of the two display boards. The top limit plates are fixedly installed on the bottom of the frame pull plates, and the top limit plates and the two display boards are arranged perpendicular to each other.

[0015] Technical effects and advantages of the present invention:

[0016] The present invention arranges a rotating dispersion mechanism and a bottom spreading mechanism to cooperate with each other, puts the catalyst into a dispersion cylinder, rotates the dispersion cylinder and opens the outer spreading plate, and the bottom is also opened synchronously, so that the catalyst is dispersed and spread out, so that the catalyst can be evenly distributed. At the same time, a pressing mechanism is also arranged to assist, and then the structure that can press down the spread catalyst is used to press down the catalyst to mix it evenly, so as to improve the effect of the catalytic reaction for asymmetric carbonate synthesis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is an internal front view of the present invention.

[0019] Figure 3 It is a partial vertical sectional view of the present invention.

[0020] Figure 4 It is a vertical cross-sectional view of the transfer and dispersion mechanism in the present invention.

[0021] Figure 5 It is a structural schematic diagram of the bottom dispersing mechanism in the present invention.

[0022] Figure 6 It is a vertical cross-sectional view of the material pressing mechanism in the present invention.

[0023] Figure 7 It is a partial cross-sectional view of the material pressing mechanism in the present invention.

[0024] The accompanying drawings are marked as follows: 1. bracket; 2. reactor; 3. transfer dispersion mechanism; 31. fixing plate; 32. dispersion cylinder; 33. gear ring; 34. gear; 35. reduction motor; 36. first spreading plate; 37. second spreading plate; 38. rotating shaft; 39. push gear; 310. rack plate; 311. slider; 312. lifting rod; 313. heavy support block; 4. bottom dispersion mechanism; 41. isotropic plate; 42. push rack; 43. cover plate; 5. pressing mechanism; 51. pressure pad; 52. rack pull plate; 53. support spring; 54. display board; 55. top limit plate. DETAILED DESCRIPTION

[0025] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0026] Embodiment 1: In view of the fact that there is no structure in the prior art that can improve the effect of catalyst input, and the conventional method of inputting the catalyst into the reactor is still mostly linear direct input, the catalyst will mostly accumulate on one side of the liquid surface in the reactor, and repeated stirring is required to make it evenly mixed, and the catalyst can only react with part of it first, and it is impossible to spread the catalyst to achieve the effect of uniform distribution and simultaneous reaction, which greatly affects the effect of the catalytic reaction for the synthesis of asymmetric carbonates. To solve this problem, the following technical solution is proposed:

[0027] Refer to the instruction manual Figure 1-Figure 7 , a catalytic reaction device for synthesizing asymmetric carbonates, such as Figure 1 and Figure 2 As shown, it comprises a bracket 1, a reaction kettle 2 is fixedly mounted on the top of the bracket 1, and a transfer and dispersion mechanism 3 and a bottom dispersion mechanism 4 are arranged inside the reaction kettle 2;

[0028] like Figure 2 and Figure 3As shown, the transfer dispersion mechanism 3 includes a fixing plate 31 arranged on the inner wall of the reaction kettle 2, the fixing plate 31 is arranged in a horizontal state, and a dispersion cylinder 32 is rotatably installed on the inner wall of the fixing plate 31. The dispersion cylinder 32 is arranged in a polygonal shape, and a gear ring 33 is fixedly installed on the outer wall of the dispersion cylinder 32. The gear ring 33 is rotatably installed on the top of the fixing plate 31, and the gear ring 33 is arranged in a circular ring shape. The outer wall of the gear ring 33 is meshed with a belt gear 34, and a reduction motor 35 is provided on the top of the belt gear 34. The reduction motor 35 is fixedly installed on the top of the reaction kettle 2, and the belt gear 34 is driven to rotate by the reduction motor 35, and then the belt gear 34 drives the gear ring 33 to rotate synchronously, that is, the gear ring 33 drives the dispersion cylinder 32 to rotate synchronously on the fixing plate 31.

[0029] like Figure 3 and Figure 4 As shown, the bottom outer wall of the dispersion cylinder 32 is provided with a plurality of first scattering plates 36 and a second scattering plates 37, and the plurality of first scattering plates 36 and the second scattering plates 37 are arranged equidistantly in a ring shape on the outer circumferential surface of the dispersion cylinder 32. The length of the first scattering plates 36 is greater than the length of the second scattering plates 37, and the width of the first scattering plates 36 is the same as the width of the inner wall of the dispersion cylinder 32. When the dispersion cylinder 32 rotates, the plurality of first scattering plates 36 and the second scattering plates 37 are flipped open through the self-rotation of the dispersion cylinder 32, so that the first scattering plates 36 and the second scattering plates 37 extend into the dispersion cylinder 32 through their flipped inclined surfaces and extract the catalyst thereof, and the rotation of the dispersion cylinder 32 causes the catalyst to be dispersed during the rotation process.

[0030] like Figure 3 and Figure 4 As shown, a rotating shaft 38 is fixedly installed on the inner wall of the plurality of first spreading plates 36 and the second spreading plates 37. The plurality of rotating shafts 38 are rotatably installed on the inner wall of the dispersion cylinder 32 respectively. The rotating shaft 38 is arranged in a horizontal state, and the plurality of first spreading plates 36 and the second spreading plates 37 are rotated by the rotating shaft 38.

[0031] like Figure 3 and Figure 4 As shown, push gears 39 are fixedly installed on both sides of multiple rotating shafts 38, and the push gears 39 are arranged in a vertical state. A rack plate 310 is commonly meshed on one side of the multiple push gears 39. The rack plate 310 is slidably installed on the outer wall of the dispersion cylinder 32, and the rack plate 310 is arranged in a vertical state. The upward movement of the rack plate 310 can drive the multiple push gears 39 to rotate synchronously and drive the rotating shaft 38 to rotate.

[0032] like Figure 3 and Figure 4As shown, the tops of the multiple rack plates 310 are respectively hinged with sliders 311, the outer walls of the sliders 311 are slidably installed with lifting rods 312, the lifting rods 312 are rotatably installed on the outer wall of the dispersion cylinder 32, and the bottoms of the lifting rods 312 are hinged with weight-supporting blocks 313. When the dispersion cylinder 32 rotates, the multiple lifting rods 312 on its outer side are affected by the gravity of the weight-supporting blocks 313 and are centrifugally lifted when it rotates, that is, the multiple lifting rods 312 rotate upward, and then the multiple lifting rods 312 drive the slider 311 to pull the multiple rack plates 310 to move upward synchronously.

[0033] like Figure 2 and Figure 5 As shown, the dispersion bottom mechanism 4 includes a plurality of slots provided at the bottom of the dispersion cylinder 32, and the outer walls of two adjacent rack plates 310 are fixedly mounted with isotope plates 41, and the plurality of isotope plates 41 are arranged in a horizontal state, and the bottoms of the plurality of isotope plates 41 are respectively fixedly mounted with push racks 42, and the push racks 42 are arranged in a U shape, and the tops of the plurality of push racks 42 are fixedly mounted with sealing plates 43, and the sealing plates 43 are located at the tops of the plurality of slots, and the area of ​​the sealing plates 43 is larger than the area of ​​the slots, and when the plurality of rack plates 310 are synchronously moved upward, the isotope plates 41 are driven to make the push racks 42 move upward synchronously, and then the push racks 42 drive the sealing plates 43 to move upward and disengage from the open slots, so that the bottom of the dispersion cylinder 32 can be opened and the catalyst can be discharged.

[0034] like Figure 6 and Figure 7 As shown, a pressing mechanism 5 is provided at the bottom of the fixing plate 31, and the pressing mechanism 5 includes a plurality of pressing pads 51 arranged on the top of the fixing plate 31. The plurality of pressing pads 51 are arranged in a ring-shaped and equidistant manner at the top of the fixing plate 31, and the tops of the plurality of pressing pads 51 are arranged in a triangular shape. The tops of the pressing pads 51 correspond to the bottom of the gear ring 33, and frame pull plates 52 are fixedly installed on both sides of the bottoms of the plurality of pressing pads 51. The plurality of frame pull plates 52 are slidably installed on the inner wall of the fixing plate 31, and the outer walls of the plurality of frame pull plates 52 are fixedly installed with support springs 53, and the support springs 53 are fixedly installed on the bottom of the fixing plate 31. When the gear ring 33 rotates, it can squeeze the plurality of pressing pads 51 to move downward, and then the plurality of pressing pads 51 drive the frame pull plates 52 to move back and forth up and down at the bottom of the fixing plate 31 by stretching the support springs 53.

[0035] like Figure 6 and Figure 7As shown, exhibition boards 54 are rotatably installed on both sides of the bottom of multiple frame pull plates 52, and the two exhibition boards 54 are symmetrically arranged. A top limit plate 55 is provided on the top of the two exhibition boards 54, and the top limit plate 55 is fixedly installed on the bottom of the frame pull plate 52. The top limit plate 55 and the two exhibition boards 54 are arranged perpendicular to each other. When the frame pull plate 52 moves downward, the frame pull plate 52 drives the bottom exhibition board 54 to move downward synchronously, and the exhibition boards 54 on both sides contact the spread catalyst and the liquid surface and are forced to expand. At this time, the top limit plate 55 contacts and supports the tops of the two exhibition boards 54, and then the exhibition boards 54 on both sides expand to press down the catalyst for mixing. When the frame pull plate 52 moves upward, the exhibition boards 54 on both sides are forced to sag and move vertically upward to avoid lifting the pressed catalyst.

[0036] In the specific implementation, the catalyst is first placed in the dispersion cylinder 32, and the reduction motor 35 is started to drive the belt gear 34 to rotate, and then the belt gear 34 drives the gear ring 33 to rotate synchronously, that is, the gear ring 33 drives the dispersion cylinder 32 to rotate synchronously on the fixing plate 31. When the dispersion cylinder 32 rotates, the multiple lifting rods 312 on the outer side are affected by the gravity of the heavy support block 313 and are centrifugally lifted when it rotates, that is, the multiple lifting rods 312 rotate upward, and the multiple lifting rods 312 drive the slider 311 to pull the multiple rack plates 310 to move upward synchronously. The upward movement of the rack plate 310 can drive the multiple push gears 39 to rotate synchronously and drive the rotating shaft 38 to rotate, that is, the multiple first spreading plates 36 and the second spreading plates 37 are turned over and opened, so that the first spreading plates 36 and the second spreading plates 37 extend into the dispersion cylinder 32 through their turned inclined surfaces and extract the catalyst, and the dispersion cylinder 32 rotates so that the catalyst is synchronously scattered around during the rotation process;

[0037] At the same time, when the multiple rack plates 310 move upward synchronously, they drive the same position plate 41 to make the push frame 42 move upward synchronously, and then the push frame 42 drives the cover plate 43 to move upward and disengage to open the slot, so that the bottom of the dispersion tube 32 can be opened and the catalyst can be discharged, so that the catalyst can be dispersed in a circular area and evenly distributed.

[0038] Then, when the gear ring 33 rotates, it can squeeze multiple pressure pads 51 to move downward, and then the multiple pressure pads 51 drive the frame pull plate 52 and stretch the support spring 53. When the frame pull plate 52 moves downward, the frame pull plate 52 drives the bottom exhibition plate 54 to move downward synchronously, and the exhibition plates 54 on both sides contact the spread catalyst and the liquid surface and are forced to expand. At this time, the top limit plate 55 contacts and supports the tops of the two exhibition plates 54, and then the exhibition plates 54 on both sides expand to press down the catalyst for mixing. After the frame pull plate 52 is separated from the gear ring 33 and is pulled upward by the support spring 53, the exhibition plates 54 on both sides are forced to sag and move vertically upward to avoid lifting the pressed catalyst.

[0039] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0040] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0041] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A catalytic reaction device for synthesizing an asymmetric carbonate, comprising a support (1), characterized in that: A reaction kettle (2) is fixedly mounted on the top of the support (1), and a transfer and dispersion mechanism (3) and a bottom dispersion mechanism (4) are arranged inside the reaction kettle (2); The transfer dispersion mechanism (3) comprises a fixing plate (31) arranged on the inner wall of the reaction kettle (2), the fixing plate (31) being arranged in a horizontal state, a dispersion cylinder (32) being rotatably mounted on the inner wall of the fixing plate (31), the dispersion cylinder (32) being arranged in a polygonal shape, a gear ring (33) being fixedly mounted on the outer wall of the dispersion cylinder (32), the gear ring (33) being rotatably mounted on the top of the fixing plate (31), the gear ring (33) being arranged in a circular ring shape, a belt gear (34) being meshed on the outer wall of the gear ring (33), a reduction motor (35) being arranged on the top of the belt gear (34), and the reduction motor (35) being fixedly mounted on the top of the reaction kettle (2).

2. The catalytic reaction device for synthesizing an asymmetric carbonate according to claim 1, characterized in that: The bottom outer wall of the dispersion cylinder (32) is provided with a plurality of first spreading plates (36) and a second spreading plate (37), and the plurality of first spreading plates (36) and the second spreading plates (37) are arranged in a circular shape and at equal intervals on the outer circumferential surface of the dispersion cylinder (32), the length of the first spreading plate (36) is greater than the length of the second spreading plate (37), and the width of the first spreading plate (36) is the same as the width of the inner wall of the dispersion cylinder (32).

3. A catalytic reaction device for synthesizing an asymmetric carbonate according to claim 2, characterized in that: A rotating shaft (38) is fixedly mounted on the inner walls of the plurality of first spreading plates (36) and the second spreading plates (37). The plurality of rotating shafts (38) are rotatably mounted on the inner walls of the dispersion cylinder (32), and the rotating shafts (38) are arranged in a horizontal state.

4. The catalytic reaction device for synthesizing an asymmetric carbonate according to claim 3, characterized in that: Push gears (39) are fixedly installed on both sides of the plurality of rotating shafts (38), and the push gears (39) are arranged in a vertical state. A rack plate (310) is commonly meshed on one side of the plurality of pushing gears (39), and the rack plate (310) is slidably installed on the outer wall of the dispersion cylinder (32), and the rack plate (310) is arranged in a vertical state.

5. The catalytic reaction device for synthesizing an asymmetric carbonate according to claim 4, characterized in that: The tops of the plurality of rack plates (310) are respectively hinged with sliders (311), the outer walls of the sliders (311) are slidably mounted with lifting rods (312), the lifting rods (312) are rotatably mounted on the outer wall of the dispersion cylinder (32), and the bottoms of the lifting rods (312) are hinged with weight-supporting blocks (313).

6. The catalytic reaction device for synthesizing an asymmetric carbonate according to claim 4, characterized in that: The bottom dispersing mechanism (4) comprises a plurality of slots provided at the bottom of the dispersing cylinder (32); a plurality of isotropic plates (41) are fixedly mounted on the outer walls of two adjacent rack plates (310); the plurality of isotropic plates (41) are arranged in a horizontal state; a plurality of push racks (42) are fixedly mounted at the bottom of the plurality of isotropic plates (41); the push racks (42) are arranged in a U shape; a sealing plate (43) is fixedly mounted on the top of the plurality of push racks (42); the sealing plate (43) is located at the top of the plurality of slots; and the area of ​​the sealing plate (43) is larger than the area of ​​the slots.

7. The catalytic reaction device for synthesizing an asymmetric carbonate according to claim 1, characterized in that: A material pressing mechanism (5) is provided at the bottom of the fixing plate (31), and the material pressing mechanism (5) comprises a plurality of pressure pads (51) arranged at the top of the fixing plate (31), and the plurality of pressure pads (51) are arranged in a circular shape and equidistantly at the top of the fixing plate (31), and the tops of the plurality of pressure pads (51) are arranged in a triangular shape, and the tops of the pressure pads (51) correspond to the bottom of the gear ring (33), and the bottoms of the plurality of pressure pads (51) are fixedly installed with pull plates (52) on both sides, and the plurality of pull plates (52) are slidably installed on the inner wall of the fixing plate (31), and the outer walls of the plurality of pull plates (52) are fixedly installed with support springs (53), and the support springs (53) are fixedly installed at the bottom of the fixing plate (31).

8. The catalytic reaction device for synthesizing an asymmetric carbonate according to claim 7, characterized in that: Exhibition boards (54) are rotatably mounted on both sides of the bottom of the plurality of the pull plates (52), the two exhibition boards (54) are symmetrically arranged, and a top limit plate (55) is provided on the top of the two exhibition boards (54), the top limit plate (55) is fixedly mounted on the bottom of the pull plates (52), and the top limit plate (55) and the two exhibition boards (54) are arranged perpendicular to each other.

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