Energy-saving ethyl acetate production equipment and method

Abstract

The invention belongs to the technical field of ethyl acetate production, and particularly relates to energy-saving ethyl acetate production equipment and method.The equipment comprises a reaction kettle, a stirring shaft is rotationally arranged in the middle of the lower end face of the inner cavity wall of the reaction kettle, stirring blades are arranged on the two sides of the stirring shaft, and feeding hoppers are arranged on the left side and the right side of the upper end of the reaction kettle; a valve is arranged on the feeding hopper, a discharging pipe is arranged in the middle of the lower end of the right side of the reaction kettle, and an anti-blocking ejection type throwing-out mechanism used for adding a catalyst is arranged on the reaction kettle. By utilizing the anti-blocking ejection type throwing-out mechanism, after a solid granular catalyst is added into the blanking barrel, the catalyst can be thrown out into the inner cavity of the reaction kettle through the through holes under the action of centrifugal force, so that the catalyst is uniformly distributed in the inner cavity of the reaction kettle, and the phenomenon that the catalyst is accumulated at a certain position in the inner cavity of the reaction kettle and is difficult to block can be avoided. The contact between the stirring blades and the catalyst is insufficient, and the stirring effect is influenced.

Description

Technical Field

[0001] The invention belongs to the technical field of ethyl acetate production, in particular to an energy-saving ethyl acetate production device and method. Background Art

[0002] Ethyl acetate has excellent solubility and quick drying properties. It is a very important organic chemical raw material and an excellent industrial solvent. It is widely used in a variety of production processes. In the production process of ethyl acetate, esterification reaction is the key step in producing ethyl acetate. During the esterification reaction, ethanol, acetic acid and a catalyst are usually added to the reactor, and the stirring device is turned on for stirring. The purpose of stirring is to fully mix the reactants to ensure the smooth progress of the esterification reaction.

[0003] The patent with the announcement number CN221085627U discloses an esterification separation device for ethyl acetate production, comprising a shell, the bottom of which is fixedly connected to a bottom plate, and the top of which is fixedly connected to a conduit. The advantages of the patent are: the esterification separation device for ethyl acetate production adds esterified ethyl acetate and anhydrous concentrated sulfuric acid into the enclosure through a feed pipe, starts the motor, and the output shaft of the motor rotates to drive the stirring shaft to rotate, and the stirring shaft rotates to mix the ethyl acetate with the anhydrous concentrated sulfuric acid, and the anhydrous concentrated sulfuric acid has water absorption, and then absorbs the water in the reaction process of ethyl acetate, and then the anhydrous concentrated sulfuric acid becomes crystals and is discharged from the discharge pipe for collection, and the esterified water is absorbed, so that the purity of the product is guaranteed, and the problem that only using a permeable membrane to remove water is not efficient, and thus the esterification efficiency of ethyl acetate is not high is solved.

[0004] However, the above technical solution still has the following deficiencies in practical application: During the esterification reaction, a catalyst needs to be added. When a solid particulate catalyst needs to be added, the catalyst may be concentrated in a certain place in the stirring chamber. When the stirring blades rotate, the catalyst will not be in sufficient contact with the stirring blades. The stirring time needs to be extended to ensure that the catalyst is mixed with the remaining materials, thereby reducing production efficiency.

[0005] To this end, the present invention provides an energy-saving ethyl acetate production device and method. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention proposes an energy-saving ethyl acetate production device and method.

[0007] The technical solution adopted by the present invention to solve the technical problem is: an energy-saving ethyl acetate production equipment, comprising a reactor, a stirring shaft is rotatably arranged in the middle of the lower end surface of the inner cavity wall of the reactor, stirring blades are arranged on both sides of the stirring shaft, a feed hopper is arranged on both sides of the upper end of the reactor, a valve is arranged on the feed hopper, a discharge pipe is arranged in the middle of the lower end of the right side of the reactor, and an anti-blocking ejection mechanism for adding a catalyst is arranged on the reactor; The anti-blocking ejection type throwing mechanism includes a lower material barrel rotatably arranged in the middle of the upper end of the reactor, a plurality of through holes are arranged on the lower material barrel, a frame is fixedly connected to the middle of the rear side of the upper end surface of the reactor, both ends of the front side of the frame are slidably connected to a slide rod 1, a lower end of the slide rod is fixedly connected to a lifting plate, a rotating frame is rotatably arranged in the middle of the lower end surface of the lifting plate, two slide rods 2 are slidably connected to the lower side of the rotating frame, the left end of the slide rod 2 is fixedly connected to a connecting plate, and a plurality of pushing rods are fixedly connected to the left end surface of the connecting plate.

[0008] Preferably, a motor five is fixedly connected to the middle of the lower end surface of the reactor, and the output end of the motor five is fixedly connected to the lower end of the stirring shaft.

[0009] Preferably, an electric push rod is fixedly connected to the middle part of the front side of the upper end face of the frame body, the piston end of the electric push rod is fixedly connected to the middle part of the upper end face of the lifting plate, a motor 1 is fixedly connected to the middle part of the upper end face of the lifting plate, and the output end of the motor 1 is fixedly connected to one end of the upper side of the rotating frame.

[0010] Preferably, a gear ring is sleeved and fixedly connected on the upper side of the lower barrel, a gear 1 is rotatably arranged in the middle of the right side of the upper end face of the reactor, the gear 1 is meshed with the outer gear block of the gear ring, a motor 2 is fixedly connected in the middle of the right side of the upper end face of the reactor, and the output end of the motor 2 is fixedly connected to the gear 1.

[0011] Preferably, a cylinder cover is rotatably provided on the upper left end of the lower cylinder, a motor six is ​​fixedly connected to the upper left end of the lower cylinder, and an output end of the motor six is ​​fixedly connected to the cylinder cover.

[0012] Preferably, a gear 2 is rotatably provided on one side of the upper end of the rotating frame, and a tooth block is only partially provided on the gear 2. A motor 3 is fixedly connected to one side of the upper end of the rotating frame, and the output end of the motor 3 is fixedly connected to the gear 2. A rack is fixedly connected to the right end of the upper slide rod 2, and the partial tooth block of the gear 2 is meshed with the tooth block on the rack.

[0013] Preferably, a blade is rotatably provided on the middle part of the left end face of the push rod through a rotating shaft, a worm gear is sleeved and fixedly connected to the right end of the rotating shaft, and the rotating shaft and the worm gear are rotatably provided on a connecting plate, a motor four is fixedly connected to one side of the connecting plate, and a worm is fixedly connected to the output ends on both sides of the motor four, and the worm and the worm gear are meshed with each other.

[0014] Preferably, a spring is sleeved on the right side of the second upper sliding rod, the right end of the spring is fixedly connected to the left end of the rack, and the left end of the spring is fixedly connected to the rotating frame.

[0015] Preferably, a solar panel is provided on the front side of the upper end face of the reactor.

[0016] An energy-saving ethyl acetate production method comprises the following specific steps: S1. Add a certain amount of acetic acid and ethyl ester into the feed hopper respectively, close the valve, then add the solid granular catalyst into the lower barrel, and then use the barrel cover to cover the upper end of the lower barrel. Then, drive the lower barrel to rotate continuously, and under the action of centrifugal force, the catalyst can be thrown out through the through hole into the inner cavity of the reactor, so that the catalyst is evenly distributed in the inner cavity of the reactor; S2, drive the barrel cover to open, extend the rotating frame into the discharge barrel, rotate the lifting plate, and make the push rods align with the multiple groups of through holes in turn. When the push rods are aligned with the through holes, drive the push rods to pass through the through holes to push the catalysts that block the through holes and adhere to the through hole walls, so that they fall into the reactor to prevent the through holes from being blocked, thereby ensuring the subsequent throwing-out effect. In addition, since the spring provides an elastic force for the push rod when it is reset, when the push rod uses this elastic force to push the catalyst particles, the catalyst particles will obtain a higher initial velocity, and will move more violently, which can intensify the dispersion of the catalyst particles, further improve the dispersion degree of the catalyst particles, and is beneficial to the subsequent reaction; S3. During the movement of the push rod, the worm gear, the rotating shaft and the blade are driven to rotate simultaneously. When the blade rotates, the large particles of catalyst can be broken at the moment when the push rod contacts the catalyst particles, making them easier to react. In addition, since the blade fits the surface of the push rod, it also has a scraping effect on the surface of the push rod to prevent the catalyst particles from adhering to the end of the push rod. When the push rod is reset, the catalyst particles fall into the lower barrel again. S4. After the catalyst particles in all the through holes are added into the reactor, the stirring shaft and the stirring blades are driven to rotate to stir the ethanol, acetic acid and the catalyst for reaction. Finally, the generated ethyl acetate is discharged through the discharge pipe.

[0017] The beneficial effects of the present invention are as follows: 1. The energy-saving ethyl acetate production equipment and method described in the present invention utilizes an anti-blocking ejection mechanism. After the solid granular catalyst is added to the discharge barrel, the catalyst can be ejected into the inner cavity of the reactor through the through hole under the action of centrifugal force, so that the catalyst is evenly distributed in the inner cavity of the reactor, thereby avoiding the situation that the stirring blades and the catalyst are not in sufficient contact due to the accumulation of the catalyst in a certain place in the inner cavity of the reactor, thereby affecting the stirring effect. Moreover, when the through hole is blocked by the catalyst, the push rod can be aligned with multiple groups of through holes in turn, and the push rod can be passed through the through hole to push the catalyst that blocks the through hole and adheres to the hole wall of the through hole, so that it falls into the reactor, thereby preventing the through hole from being blocked, ensuring the subsequent ejection effect, and increasing the amount of catalyst added, and, When the push rod uses elastic force to push the catalyst particles, the catalyst particles will obtain a higher initial velocity and move more violently, which can intensify the dispersion of the catalyst particles, further improve the dispersion degree of the catalyst particles, and is beneficial to subsequent reactions. In addition, during the movement of the push rod, the motor can be used to drive the worms on the upper and lower sides to rotate, so that the worm wheel, the shaft, and the blade rotate at the same time. When the blade rotates, the large particles of catalyst can be broken at the moment when the push rod contacts the catalyst particles, making it easier to react. In addition, since the blade fits the surface of the push rod, it also has a scraping effect on the surface of the push rod to prevent the catalyst particles from sticking to the end of the push rod. When the push rod is reset, the catalyst particles fall into the lower barrel again.

[0018] 2. The energy-saving ethyl acetate production equipment and method described in the present invention, by setting up solar panels, when the equipment is used outdoors, the solar panels can directly convert solar energy into electrical energy to provide part or all of the required electricity for the equipment, thereby reducing the equipment's dependence on grid electricity, achieving energy self-sufficiency, and being more energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of a half-section of a reactor; Figure 3 It is a schematic diagram of the local three-dimensional structure of the lower barrel; Figure 4 This is a schematic diagram of the partial three-dimensional structure of the lower barrel from another perspective; Figure 5 yes Figure 4 A partial enlarged view of the middle part; Figure 6 yes Figure 4 A partial enlarged view of point B in the middle; Figure 7 It is a schematic diagram of the local three-dimensional structure of the cylinder cover; Figure 8 It is a schematic diagram of the three-dimensional structure of five parts of the motor; Fig. 9 It is a schematic diagram of the local three-dimensional structure at the connecting plate; Fig.10 It is a schematic diagram of the local three-dimensional structure of the blade.

[0021] In the figure: 1. reactor; 2. feed hopper; 3. frame; 4. valve; 5. barrel cover; 6. discharge barrel; 7. through hole; 8. motor 1; 9. lifting plate; 10. stirring shaft; 11. stirring blade; 12. slide bar 1; 13. electric push rod; 14. gear 1; 15. solar panel; 16. motor 2; 17. rotating frame; 18. motor 3; 19. gear 2; 20. rack; 21. slide bar 2; 22. spring; 23. connecting plate; 24. rotating shaft; 25. blade; 26. worm; 27. push rod; 28. motor 4; 29. ​​worm wheel; 30. discharge pipe; 31. motor 5; 32. motor 6; 33. gear ring. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0023] Please refer to Figure 1-Figure 10 The present invention provides a technical solution: an energy-saving ethyl acetate production device, comprising a reactor 1, a stirring shaft 10 is rotatably arranged in the middle of the lower end surface of the inner cavity wall of the reactor 1, stirring blades 11 are arranged on both sides of the stirring shaft 10, a feed hopper 2 is arranged on both sides of the upper end of the reactor 1, a valve 4 is arranged on the feed hopper 2, a discharge pipe 30 is arranged in the middle of the lower end of the right side of the reactor 1, and an anti-blocking top-out throwing mechanism for adding a catalyst is arranged on the reactor 1; The anti-blocking ejection mechanism includes a lower material barrel 6 rotatably arranged in the middle of the upper end of the reactor 1, and a plurality of through holes 7 are arranged on the lower material barrel 6. A frame body 3 is fixedly connected to the middle of the rear side of the upper end surface of the reactor 1, and both ends of the front side of the frame body 3 are slidably connected to a slide bar 12, and a lifting plate 9 is fixedly connected to the lower end of the slide bar 12. A rotating frame 17 is rotatably arranged in the middle of the lower end surface of the lifting plate 9, and two slide bars 21 are slidably connected to the lower side of the rotating frame 17. A connecting plate 23 is fixedly connected to the left end of the slide bar 21, and a plurality of push rods 27 are fixedly connected to the left end surface of the connecting plate 23.

[0024] In this embodiment, Figure 1-Figure 10As shown, a motor 5 31 is fixedly connected to the middle of the lower end surface of the reactor 1, and the output end of the motor 5 31 is fixedly connected to the lower end of the stirring shaft 10; An electric push rod 13 is fixedly connected to the middle of the front side of the upper end face of the frame 3, and the piston end of the electric push rod 13 is fixedly connected to the middle of the upper end face of the lifting plate 9. A motor 8 is fixedly connected to the middle of the upper end face of the lifting plate 9, and the output end of the motor 8 is fixedly connected to one end of the upper side of the rotating frame 17; A gear ring 33 is sleeved and fixedly connected to the upper side of the lower barrel 6, a gear 14 is rotatably arranged in the middle of the right side of the upper end surface of the reactor 1, and the gear 14 is meshed with the outer gear block of the gear ring 33, and a motor 2 16 is fixedly connected to the middle of the right side of the upper end surface of the reactor 1, and the output end of the motor 2 16 is fixedly connected to the gear 14; A cylinder cover 5 is rotatably provided at the upper left end of the lower cylinder 6, and a motor 6 32 is fixedly connected to the upper left end of the lower cylinder 6, and the output end of the motor 6 32 is fixedly connected to the cylinder cover 5; A gear 2 19 is rotatably provided on one side of the upper end of the rotating frame 17, and only a tooth block is partially provided on the gear 2 19. A motor 3 18 is fixedly connected to one side of the upper end of the rotating frame 17, and the output end of the motor 3 18 is fixedly connected to the gear 2 19. A rack 20 is fixedly connected to the right end of the upper sliding rod 21, and the partial tooth block of the gear 2 19 is meshed with the tooth block on the rack 20. A blade 25 is rotatably provided at the middle of the left end surface of the push rod 27 through the rotating shaft 24, a worm gear 29 is sleeved and fixedly connected at the right end of the rotating shaft 24, and both the rotating shaft 24 and the worm gear 29 are rotatably provided on the connecting plate 23, a motor 28 is fixedly connected to one side of the connecting plate 23, and a worm 26 is fixedly connected to the output ends of both sides of the motor 28, and the worm 26 and the worm gear 29 are meshed with each other; A spring 22 is sleeved on the right side of the upper slide bar 21, the right end of the spring 22 is fixedly connected to the left end of the rack 20, and the left end of the spring 22 is fixedly connected to the rotating frame 17; Specifically, ethyl acetate has excellent solubility and quick drying properties, and is a very important organic chemical raw material and an excellent industrial solvent. It is widely used in a variety of production processes. In the production process of ethyl acetate, esterification reaction is a key step in producing ethyl acetate. In the esterification reaction process, ethanol, acetic acid and a catalyst are usually added to a reactor, and a stirring device is turned on for stirring. The purpose of stirring is to fully mix the reactants to ensure that the esterification reaction proceeds smoothly. When the existing esterification separation device for ethyl acetate production is used, when it is necessary to add a solid particulate catalyst, the catalyst may be concentrated and accumulated in a certain place in the stirring chamber. When the stirring blade 11 rotates, the catalyst and the stirring blade 11 are not in sufficient contact, and the stirring time needs to be extended to ensure that the catalyst is mixed with the remaining materials, thereby reducing the production efficiency. Therefore, in order to solve the above problems, when the present embodiment is used, a certain amount of acetic acid and ethyl ester are added to the feed hoppers 2 on both sides respectively, and the valve 4 is closed, and then the solid granular catalyst is added to the discharge barrel 6, and then the motor 6 32 is used to drive the barrel cover 5 to rotate to cover the upper end of the discharge barrel 6, and then the motor 2 16 is started to drive the gear 1 14 to rotate, so that the gear ring 33 and the discharge barrel 6 can be continuously rotated, and the catalyst can be thrown out to the inner cavity of the reactor 1 through the through hole 7 under the action of centrifugal force, so that the catalyst is evenly distributed in the inner cavity of the reactor 1, and the situation that the stirring blade 11 is not in sufficient contact with the catalyst due to the accumulation of the catalyst in a certain place in the inner cavity of the reactor 1, which affects the stirring effect; Since some catalyst particles may be too large or irregular in shape, the through hole 7 may be blocked during the throwing-out process, which not only reduces the amount of catalyst added, but also affects the passage of subsequent catalysts. Moreover, even if the through hole 7 is not completely blocked, if catalyst particles adhere to the wall of the through hole 7, it will also affect the amount of catalyst added and increase the probability of subsequent blockage. Therefore, when the above situation occurs, the barrel cover 5 can be driven to open, and then the electric push rod 13 can be used to drive the lifting plate 9 to descend, so that the rotating frame 17 extends into the discharge barrel 6, and the motor 1 8 can be used to drive the lifting plate 9 to rotate, so that the push rod 27 is aligned with multiple groups of through holes 7 in turn. When the push rod 27 is aligned with the through hole 7, the motor 3 18 drives the gear 2 19 to rotate counterclockwise. , the gear 2 19 drives the rack 20 to move, at this time, the spring 22 is in a compressed state, and when the tooth block on the gear 2 19 is away from the rack 20, the spring 22 is reset, so that the slide bar 21 moves horizontally, so that the push rod 27 can pass through the through hole 7 to push the catalyst that blocks the through hole 7 and adheres to the hole wall of the through hole 7, so that it falls into the reactor 1, to prevent the through hole 7 from being blocked, thereby ensuring the subsequent throwing-out effect, and because the spring 22 provides an elastic force for the push rod 27 when it is reset, when the push rod 27 uses this elastic force to push the catalyst particles, the catalyst particles will obtain a higher initial velocity, and will move more violently, which can intensify the dispersion of the catalyst particles, further improve the dispersion degree of the catalyst particles, and is beneficial to the subsequent reaction; Furthermore, during the movement of the push rod 27, the motor 28 can be used to drive the worm 26 on the upper and lower sides to rotate, so that the worm wheel 29, the rotating shaft 24, and the blade 25 rotate simultaneously. When the blade 25 rotates, the large particles of catalyst can be crushed at the moment when the push rod 27 contacts the catalyst particles, making it easier to react. Moreover, since the blade 25 fits the surface of the push rod 27, it also has a scraping effect on the surface of the push rod 27 to prevent the catalyst particles from adhering to the end of the push rod 27. When the push rod 27 is reset, the catalyst particles fall into the lower barrel 6 again. When the catalyst particles at all the through holes 7 are added to the reactor 1, the motor 5 31 can be started to drive the stirring shaft 10 and the stirring blade 11 to rotate, so as to stir the ethanol, acetic acid and the catalyst for reaction, and finally, the generated ethyl acetate can be discharged through the discharge pipe 30; Therefore, by utilizing the anti-blocking ejection mechanism, after the solid granular catalyst is added to the discharge barrel 6, the catalyst can be thrown out into the inner cavity of the reactor 1 through the through hole 7 under the action of centrifugal force, so that the catalyst is evenly distributed in the inner cavity of the reactor 1, thereby avoiding the situation that the stirring blade 11 is not in sufficient contact with the catalyst due to the accumulation of the catalyst in a certain place in the inner cavity of the reactor 1, thereby affecting the stirring effect. Moreover, when the through hole 7 is blocked by the catalyst, the push rod 27 can be aligned with multiple groups of through holes 7 in turn, and the push rod 27 can pass through the through hole 7 to push the catalyst that blocks the through hole 7 and adheres to the hole wall of the through hole 7, so that it falls into the reactor 1, thereby preventing the through hole 7 from being blocked, thereby ensuring the subsequent throwing-out effect and increasing the amount of catalyst added. Moreover, when the push rod 27 uses elastic force to push the catalyst particles When the push rod 27 moves, the catalyst particles will obtain a higher initial velocity and will move more violently, thereby intensifying the dispersion of the catalyst particles and further improving the dispersion degree of the catalyst particles, which is beneficial to the subsequent reaction. In addition, during the movement of the push rod 27, the motor 28 can be used to drive the worm 26 on the upper and lower sides to rotate, so that the worm gear 29, the rotating shaft 24, and the blade 25 can rotate at the same time. When the blade 25 rotates, the large particles of catalyst can be broken at the moment when the push rod 27 contacts the catalyst particles, making it easier to react. In addition, since the blade 25 is in contact with the surface of the push rod 27, it also has a scraping effect on the surface of the push rod 27 to prevent the catalyst particles from adhering to the end of the push rod 27. When the push rod 27 is reset, the catalyst particles fall into the inside of the discharge barrel 6 again.

[0025] In this embodiment, Figure 1 As shown, a solar cell panel 15 is provided on the front side of the upper end of the reactor 1; Specifically, by setting up the solar panel 15, when the device is used outdoors, the solar panel 15 can directly convert solar energy into electrical energy, providing part or all of the required electricity for the device, thereby reducing the device's dependence on grid power, achieving energy self-sufficiency, and being more energy-saving.

[0026] An energy-saving ethyl acetate production method comprises the following specific steps: S1. Add a certain amount of acetic acid and ethyl ester into the feed hopper 2, close the valve 4, add the solid granular catalyst into the lower barrel 6, and then seal the upper end of the lower barrel 6 with the barrel cover 5. Then, drive the lower barrel 6 to rotate continuously, and under the action of centrifugal force, throw the catalyst through the through hole 7 into the inner cavity of the reactor 1, so that the catalyst is evenly distributed in the inner cavity of the reactor 1; S2, drive the cylinder cover 5 to open, so that the rotating frame 17 extends into the discharge cylinder 6, and the lifting plate 9 rotates, so that the push rod 27 is aligned with the multiple groups of through holes 7 in turn. After the push rod 27 is aligned with the through hole 7, the push rod 27 is driven to pass through the through hole 7 to push the catalyst that blocks the through hole 7 and adheres to the hole wall of the through hole 7, so that it falls into the reactor 1 to prevent the through hole 7 from being blocked, thereby ensuring the subsequent throwing-out effect. In addition, since the spring 22 provides an elastic force for the push rod 27 when it is reset, when the push rod 27 uses this elastic force to push the catalyst particles, the catalyst particles will obtain a higher initial velocity, and will move more violently, which can intensify the dispersion of the catalyst particles, further improve the dispersion degree of the catalyst particles, and is beneficial to the subsequent reaction; S3. During the movement of the push rod 27, the worm gear 29, the rotating shaft 24 and the blade 25 are driven to rotate simultaneously. When the blade 25 rotates, the large particles of catalyst can be crushed at the moment when the push rod 27 contacts the catalyst particles, making it easier to react. In addition, since the blade 25 fits the surface of the push rod 27, it also has a scraping effect on the surface of the push rod 27 to prevent the catalyst particles from adhering to the end of the push rod 27. When the push rod 27 is reset, the catalyst particles fall into the lower barrel 6 again. S4. After the catalyst particles at all the through holes 7 are added into the reactor 1, the stirring shaft 10 and the stirring blades 11 are driven to rotate to stir the ethanol, acetic acid and the catalyst for reaction. Finally, the generated ethyl acetate is discharged through the discharge pipe 30.

[0027] Working principle: add a certain amount of acetic acid and ethyl ester to the feed hoppers 2 on both sides respectively, and close the valve 4, then add the solid granular catalyst into the discharge barrel 6, and then use the motor 6 32 to drive the barrel cover 5 to rotate to seal the upper end of the discharge barrel 6, then start the motor 2 16 to drive the gear 1 14 to rotate, so that the ring gear 33 and the discharge barrel 6 can continue to rotate, and under the action of centrifugal force, the catalyst can be thrown out to the inner cavity of the reactor 1 through the through hole 7, so that the catalyst is evenly distributed in the inner cavity of the reactor 1, which can avoid the situation that the stirring blade 11 is not in sufficient contact with the catalyst due to the accumulation of the catalyst in a certain place in the inner cavity of the reactor 1, thereby affecting the stirring effect; since some catalyst particles may be too large or irregular in shape, they will appear during the throwing out process. The situation of blocking the through hole 7 not only reduces the amount of catalyst added, but also affects the passage of subsequent catalysts, and even if the through hole 7 is not completely blocked, if catalyst particles adhere to the wall of the through hole 7, it will also affect the amount of catalyst added, and also increase the probability of subsequent blockage. Therefore, when the above situation occurs, the barrel cover 5 can be driven to open, and then the electric push rod 13 can be used to drive the lifting plate 9 to descend, so that the rotating frame 17 extends into the discharge barrel 6, and the motor 1 8 can be used to drive the lifting plate 9 to rotate, so that the push rod 27 is aligned with multiple groups of through holes 7 in turn. After the push rod 27 is aligned with the through hole 7, the motor 3 18 drives the gear 2 19 to rotate counterclockwise, and the gear 2 19 drives the rack 20 to move. At this time, the spring 22 is in a compressed state. When the gear 2 19 After the tooth block on the gear moves away from the rack 20, the spring 22 is reset to make the slide bar 21 move horizontally, so that the push rod 27 can pass through the through hole 7 to push the catalyst that blocks the through hole 7 and adheres to the wall of the through hole 7, so that it falls into the reactor 1 to prevent the through hole 7 from being blocked, thereby ensuring the subsequent throwing-out effect. In addition, since the spring 22 provides an elastic force for the push rod 27 when it is reset, when the push rod 27 uses this elastic force to push the catalyst particles, the catalyst particles will obtain a higher initial velocity and move more violently, which can intensify the dispersion of the catalyst particles and further improve the dispersion degree of the catalyst particles, which is beneficial to the subsequent reaction. In addition, during the movement of the push rod 27, the motor 28 can be used to drive the worm 26 on the upper and lower sides to rotate. The worm gear 29, the rotating shaft 24, and the blade 25 are rotated at the same time. When the blade 25 rotates, the large particles of the catalyst can be broken at the moment when the push rod 27 contacts the catalyst particles, making it easier to react. In addition, since the blade 25 is in contact with the surface of the push rod 27, it also has a scraping effect on the surface of the push rod 27 to prevent the catalyst particles from adhering to the end of the push rod 27. When the push rod 27 is reset, the catalyst particles fall into the lower barrel 6 again. When the catalyst particles at all the through holes 7 are added to the reactor 1, the motor 5 31 can be started to drive the stirring shaft 10 and the stirring blade 11 to rotate, so as to stir the ethanol, acetic acid, and the catalyst. Finally, the generated ethyl acetate can be discharged through the discharge pipe 30.Therefore, by utilizing the anti-blocking ejection mechanism, after the solid granular catalyst is added to the discharge barrel 6, the catalyst can be thrown out into the inner cavity of the reactor 1 through the through hole 7 under the action of centrifugal force, so that the catalyst is evenly distributed in the inner cavity of the reactor 1, thereby avoiding the situation that the stirring blade 11 is not in sufficient contact with the catalyst due to the catalyst being concentrated in a certain place in the inner cavity of the reactor 1, thereby affecting the stirring effect. In addition, when the through hole 7 is blocked by the catalyst, the push rod 27 can be aligned with multiple groups of through holes 7 in turn, and the push rod 27 can pass through the through hole 7 to push the catalyst that blocks the through hole 7 and adheres to the hole wall of the through hole 7, so that it falls into the reactor 1, thereby preventing the through hole 7 from being blocked, thereby ensuring the subsequent throwing-out effect and increasing the amount of catalyst added. In addition, when the push rod 27 uses elastic force to push the catalyst particles, the catalyst particles will obtain a higher initial velocity, and will move more violently, thereby intensifying the dispersion of the catalyst particles. The dispersion of catalyst particles is improved, which is beneficial to the subsequent reaction. In addition, during the movement of the push rod 27, the motor 28 can be used to drive the worm 26 on the upper and lower sides to rotate, so that the worm wheel 29, the rotating shaft 24, and the blade 25 rotate simultaneously. When the blade 25 rotates, the large particles of catalyst can be broken at the moment when the push rod 27 contacts the catalyst particles, making it easier to react. In addition, since the blade 25 fits the surface of the push rod 27, it also has a scraping effect on the surface of the push rod 27 to prevent the catalyst particles from adhering to the end of the push rod 27. When the push rod 27 is reset, the catalyst particles fall into the lower barrel 6 again. By setting the solar panel 15, when the device is used outdoors, the solar panel 15 can directly convert solar energy into electrical energy to provide part or all of the required electricity for the device, thereby reducing the device's dependence on power grid electricity, achieving energy self-sufficiency, and being more energy-saving. ;

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An energy-saving ethyl acetate production device, comprising a reaction kettle (1), characterized in that: A stirring shaft (10) is rotatably arranged in the middle of the lower end surface of the inner cavity wall of the reactor (1), stirring blades (11) are arranged on both sides of the stirring shaft (10), a feed hopper (2) is arranged on both sides of the upper end of the reactor (1), a valve (4) is arranged on the feed hopper (2), a discharge pipe (30) is arranged in the middle of the lower end of the right side of the reactor (1), and an anti-blocking ejection type ejection mechanism for adding a catalyst is arranged on the reactor (1); The anti-blocking ejection mechanism comprises a lower material barrel (6) rotatably arranged at the middle of the upper end of the reactor (1), the lower material barrel (6) being provided with a plurality of through holes (7), a frame body (3) being fixedly connected to the middle of the rear side of the upper end surface of the reactor (1), both ends of the front side of the frame body (3) being slidably connected to a slide bar 1 (12), a lifting plate (9) being fixedly connected to the lower end of the slide bar 1 (12), a rotating frame (17) being rotatably arranged at the middle of the lower end surface of the lifting plate (9), two slide bars 2 (21) being slidably connected to the lower side of the rotating frame (17), a connecting plate (23) being fixedly connected to the left end of the slide bar 2 (21), and a plurality of push rods (27) being fixedly connected to the left end surface of the connecting plate (23).

2. An energy-saving ethyl acetate production equipment according to claim 1, characterized in that: A motor five (31) is fixedly connected to the middle of the lower end surface of the reaction kettle (1), and an output end of the motor five (31) is fixedly connected to the lower end of the stirring shaft (10).

3. An energy-saving ethyl acetate production equipment according to claim 1, characterized in that: An electric push rod (13) is fixedly connected to the middle of the front side of the upper end face of the frame body (3); the piston end of the electric push rod (13) is fixedly connected to the middle of the upper end face of the lifting plate (9); the middle of the upper end face of the lifting plate (9) is fixedly connected to a motor 1 (8); the output end of the motor 1 (8) is fixedly connected to one end of the upper side of the rotating frame (17).

4. The energy-saving ethyl acetate production equipment according to claim 1, characterized in that: A gear ring (33) is sleeved on the upper side of the lower barrel (6) and fixedly connected thereto; a gear 1 (14) is rotatably arranged in the middle of the right side of the upper end surface of the reactor (1); the gear 1 (14) is meshed with the outer gear block of the gear ring (33); a motor 2 (16) is fixedly connected to the middle of the right side of the upper end surface of the reactor (1); the output end of the motor 2 (16) is fixedly connected to the gear 1 (14).

5. The energy-saving ethyl acetate production equipment according to claim 1, characterized in that: A cylinder cover (5) is rotatably provided at the upper left end of the lower cylinder (6), and a motor six (32) is fixedly connected to the upper left end of the lower cylinder (6), and an output end of the motor six (32) is fixedly connected to the cylinder cover (5).

6. The energy-saving ethyl acetate production equipment according to claim 1, characterized in that: A gear 2 (19) is rotatably provided on one side of the upper end of the rotating frame (17), and a tooth block is only partially provided on the gear 2 (19). A motor 3 (18) is fixedly connected to one side of the upper end of the rotating frame (17), and an output end of the motor 3 (18) is fixedly connected to the gear 2 (19). A rack (20) is fixedly connected to the right end of the upper sliding rod 2 (21), and a partial tooth block of the gear 2 (19) meshes with a tooth block on the rack (20).

7. The energy-saving ethyl acetate production equipment according to claim 1, characterized in that: A blade (25) is rotatably provided at the middle of the left end surface of the push rod (27) via a rotating shaft (24); a worm gear (29) is sleeved on and fixedly connected to the right end of the rotating shaft (24); and both the rotating shaft (24) and the worm gear (29) are rotatably provided on a connecting plate (23); a motor (28) is fixedly connected to one side of the connecting plate (23); worms (26) are fixedly connected to output ends of both sides of the motor (28); and the worms (26) and the worm gear (29) are meshed with each other.

8. The energy-saving ethyl acetate production equipment according to claim 6, characterized in that: A spring (22) is sleeved on the right side of the second slide bar (21) on the upper side, the right end of the spring (22) is fixedly connected to the left end of the rack (20), and the left end of the spring (22) is fixedly connected to the rotating frame (17).

9. The energy-saving ethyl acetate production equipment according to claim 1, characterized in that: A solar cell panel (15) is arranged on the front side of the upper end of the reaction kettle (1).

10. An energy-saving method for producing ethyl acetate, characterized in that: The production device according to any one of claims 1 to 9 is used for production, comprising the following specific steps: S1. Add a certain amount of acetic acid and ethyl ester into the feed hopper (2) respectively, close the valve (4), then add the solid granular catalyst into the discharge barrel (6), and then use the barrel cover (5) to seal the upper end of the discharge barrel (6). Then, drive the discharge barrel (6) to rotate continuously, so that the catalyst can be thrown out into the inner cavity of the reactor (1) through the through hole (7) under the action of centrifugal force, so that the catalyst is evenly distributed in the inner cavity of the reactor (1); S2, driving the barrel cover (5) to open, so that the rotating frame (17) extends into the discharge barrel (6), and the lifting plate (9) rotates, so that the push rod (27) is aligned with the plurality of through holes (7) in turn. After the push rod (27) is aligned with the through holes (7), the push rod (27) is driven to pass through the through holes (7) to push the catalyst that blocks the through holes (7) and adheres to the hole walls of the through holes (7) so that the catalyst falls into the reactor (1) to prevent the through holes (7) from being blocked, thereby ensuring the subsequent throwing-out effect. In addition, since the spring (22) provides an elastic force for the push rod (27) when it is reset, when the push rod (27) uses this elastic force to push the catalyst particles, the catalyst particles will obtain a higher initial velocity and will move more violently, thereby intensifying the dispersion of the catalyst particles and further improving the dispersion degree of the catalyst particles, which is beneficial to the subsequent reaction; S3. During the movement of the push rod (27), the worm gear (29), the rotating shaft (24) and the blade (25) are driven to rotate simultaneously. When the blade (25) rotates, large particles of catalyst can be crushed at the moment when the push rod (27) contacts the catalyst particles, making them easier to react. In addition, since the blade (25) is in contact with the surface of the push rod (27), the surface of the push rod (27) is also scraped to prevent the catalyst particles from adhering to the end of the push rod (27). When the push rod (27) is reset, the catalyst particles fall into the lower barrel (6) again. S4. After all the catalyst particles at the through holes (7) are added to the reactor (1), the stirring shaft (10) and the stirring blades (11) are driven to rotate to stir the ethanol, acetic acid and the catalyst for reaction. Finally, the generated ethyl acetate is discharged through the discharge pipe (30).

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