A device for recovering and reusing acetylene glycol in BDO production

Abstract

This invention relates to the field of butynediol recovery and reuse technology, and in particular to a butynediol recovery and reuse device in BDO production. The device includes a spent catalyst slurry tank, a spent catalyst slurry pump, a plate and frame filter press, a receiving device, and a fresh catalyst tank. The output end of the spent catalyst slurry tank is connected to the input end of the spent catalyst slurry pump, and the output end of the spent catalyst is connected to the input end of the plate and frame filter press. The first output end of the plate and frame filter press is connected to the fresh catalyst tank, and the second output end of the plate and frame filter press is connected to the receiving device. The receiving device includes a movable base plate with a vertically movable support platform at its upper end. When the support platform moves downwards to the bottom, it forms a structure where the base plate can move. A receiving box is located at the upper end of the support platform, and a rotatable long cam is also located at the upper end of the support platform. When the long cam rotates, it forms a structure where the receiving box flips upwards and then oscillates. This improves the utilization rate of waste liquid, increases production capacity, and ensures that the separated solid catalyst is collected in a unified location.

Description

Technical Field

[0001] This invention relates to the field of butynediol recovery and reuse technology, and in particular to a butynediol recovery and reuse device in BDO production. Background Technology

[0002] In the BDO industry, the butynediol (BYD) catalyst slurry from the acetylation reactor in the acetylation process is spun from a thickening filter into a waste catalyst slurry tank. The waste catalyst slurry is then pumped into a disc filter to separate the slurry, resulting in a waste catalyst with a moisture content of 80%. This waste catalyst slurry is sold as hazardous waste, while the 20% butynediol (BYD) clear liquid is recovered into the system. In the production industry, cost-effectiveness is paramount, requiring cost reduction. Furthermore, increasing environmental pressures pose a significant challenge to the transportation of the waste catalyst slurry, and the separated solid catalyst cannot be collected in a unified manner. Therefore, a butynediol recovery and reuse device for BDO production is designed to address these issues. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a butynediol recovery and reuse device for BDO production. By using a plate and frame filter press instead of a disc filter, the solid-liquid separation of the catalyst slurry and the recovery rate of butynediol clear liquid are increased to over 90%. After filtration, the slurry becomes solid waste catalyst with a moisture content of about 8%, improving waste liquid utilization, increasing production capacity, and ensuring that the separated solid catalyst is collected in a unified location, effectively solving the problems mentioned in the background technology.

[0004] The technical solution adopted by the present invention to solve the above problems is as follows:

[0005] A butynediol recovery and reuse device in BDO production includes a spent catalyst slurry tank, a spent catalyst slurry pump, a plate and frame filter press, a receiving device, and a fresh catalyst tank. The output end of the spent catalyst slurry tank is connected to the input end of the spent catalyst slurry pump, and the output end of the spent catalyst is connected to the input end of the plate and frame filter press. The first output end of the plate and frame filter press is connected to the fresh catalyst tank, and the second output end of the plate and frame filter press is connected to the receiving device. The receiving device includes a movable base plate, and the upper part of the base plate is provided with a vertically movable support platform. When the support platform moves downward to the bottom, it can form a structure in which the base plate moves. The upper part of the support platform is provided with a receiving box, and the upper part of the support platform is also provided with a rotatable long cam. When the long cam rotates, it can form a structure in which the receiving box flips upward and then oscillates.

[0006] A cylindrical tube is rotatably connected to the inner wall of the base plate. A cylindrical seat is provided on the inner wall of the cylindrical tube and fixed to the support platform. Two centrally symmetrical L-shaped grooves are opened on the outer surface of the cylindrical tube. Two short sliding pins that cooperate with the corresponding L-shaped grooves are fixed on the outer surface of the cylindrical seat. A spur gear is fixed to the lower end of the outer surface of the cylindrical tube. A spur rack meshes on the outer surface of the spur gear. The spur rack is slidably connected to the lower end surface of the base plate. An outwardly extending square guide rod is fixed to the rear end surface of the spur rack. A first cylindrical pad is fixed to the front end surface of the square guide rod. A first baffle that cooperates with the first cylindrical pad is provided at the rear end of the base plate. A first spring is fixed to the front end surface of the spur rack.

[0007] The other end of the first spring is also fixedly connected to a spring seat, and the bottom end of the spring seat is fixedly connected to the lower surface of the base plate.

[0008] The long cam is rotatably connected to the upper end of the support platform. A slide block is also slidably connected to the upper surface of the support platform. A long sliding pin that cooperates with the long cam is fixed to the inner wall of the slide block. The receiving box is hinged to the front side of the upper surface of the support platform. Short connecting rods are respectively hinged to the left and right ends of the slide block. The other end of the short connecting rod is respectively hinged to the lower end surface of the receiving box.

[0009] The front end of the receiving box is hinged with a blocking plate, and the left and right ends of the blocking plate are respectively fixed with folding connecting rods. The upper end of the folding connecting rod is respectively hinged with a long connecting rod that tilts downward to the rear side. The other end of the long connecting rod is hinged to the support platform.

[0010] A first motor is fixedly connected to the lower surface of the base plate. A first pulley is fixedly connected to the output end of the first motor. A second pulley is connected to one side of the first pulley. A long rotating shaft is slidably connected to the inner wall of the second pulley. A first helical gear that is rotatably connected to the base plate is slidably connected to the front end of the outer surface of the long rotating shaft. A second helical gear meshes with the lower end of the first helical gear. A first track wheel that is rotatably connected to the base plate is coaxially fixed to the left and right ends of the second helical gear. A stop seat that is slidably connected to the long rotating shaft is fixedly connected to the front side of the lower surface of the base plate. A second spring is sleeved on the front end of the outer surface of the long rotating shaft. A second cylindrical pad that cooperates with the second spring is rotatably connected to the front end surface of the long rotating shaft. A second baffle that cooperates with the second cylindrical pad is provided at the front end of the base plate.

[0011] A first bevel gear is fixedly connected to the rear end of the outer surface of the long rotating shaft. A transmission shaft is rotatably connected to the inner wall of the support platform. A small bevel gear is fixedly connected to the upper end of the outer surface of the transmission shaft. A large bevel gear meshes with the upper end of the small bevel gear. The large bevel gear is coaxially fixedly connected to the long cam. A second bevel gear is slidably connected to the lower end of the outer surface of the transmission shaft. It is rotatably connected to the base plate and engages with the first bevel gear.

[0012] Long guide rods are fixedly connected to the four corners of the lower surface of the support platform. The long guide rods are slidably connected to the inner wall of the base plate. A weighing spring is fitted on the outer surface of each long guide rod. Anti-detachment caps that cooperate with the base plate are fixedly connected to the lower surface of each long guide rod.

[0013] A cylindrical tube is rotatably connected to the inner wall of the base plate. A cylindrical seat is provided on the inner wall of the cylindrical tube and fixed to the support platform. Two centrally symmetrical L-shaped sliding grooves are opened on the outer surface of the cylindrical tube. Two short sliding pins that cooperate with the corresponding L-shaped sliding grooves are fixed on the outer surface of the cylindrical seat. A spur gear is fixed to the lower end of the outer surface of the cylindrical tube. A spur rack meshes on the outer surface of the spur gear. The spur rack is slidably connected to the lower end surface of the base plate. An outwardly extending square guide rod is fixed to the rear end surface of the spur rack. A first cylindrical pad is fixed to the front end surface of the square guide rod. A first baffle that cooperates with the first cylindrical pad is provided at the rear end of the base plate. A first spring is fixed to the front end surface of the spur rack.

[0014] This invention features a novel structure, ingenious design, and simple and convenient operation, offering the following advantages compared to existing technologies:

[0015] By using a plate and frame filter press instead of a disc filter, the solid-liquid separation of the catalyst slurry and the recovery rate of butyne diol clear liquid are increased to over 90%. After filtration, the slurry becomes solid waste catalyst with a moisture content of about 8%, improving waste liquid utilization and increasing production capacity. The separated solid catalyst is collected in a unified location. When the material in the receiving box reaches the designated weight, the first motor is automatically triggered by its own gravity, moving the entire receiving device forward to the designated position. After reaching the designated position, the receiving box flips upward to unload the material to the designated position. Subsequently, the device returns to the initial position, completing the entire unloading process. This fully automated production transfer replaces manual unloading and improves production efficiency. Attached Figure Description

[0016] Figure 1 This is an isometric view I of a butynediol recovery and reuse device in BDO production according to the present invention.

[0017] Figure 2 This is an isometric view II of a butynediol recovery and reuse device in BDO production according to the present invention.

[0018] Figure 3 This is a schematic diagram of the conveyor belt installation in a butyrynethiol recovery and reuse device for BDO production according to the present invention.

[0019] Figure 4 This is a schematic diagram of the pulley installation in a butyrynethiol recovery and reuse device for BDO production according to the present invention.

[0020] Figure 5 This is a schematic diagram of the concave conveying mechanism of a butyrynethiol recovery and reuse device in BDO production according to the present invention.

[0021] Figure 6 This is a cross-sectional view of a sealed box in a butynediol recovery and reuse device for BDO production according to the present invention.

[0022] Figure 7 This is a schematic diagram of the installation of the sealing door of a butyrynethiol recovery and reuse device in BDO production according to the present invention.

[0023] Figure 8 This is a schematic diagram of the installation of a long cam in a butynediol recovery and reuse device for BDO production according to the present invention.

[0024] Figure 9 This is a schematic diagram of the support frame installation of a butynediol recovery and reuse device in BDO production according to the present invention.

[0025] Figure 10 This is a schematic diagram of the crank installation of a butyrynethiol recovery and reuse device in BDO production according to the present invention.

[0026] Figure 11 This is a schematic diagram of the belt curtain installation of a butynediol recovery and reuse device in BDO production according to the present invention.

[0027] Numbering in the diagram: 1-Waste catalyst slurry tank, 2-Waste catalyst slurry pump, 3-Disc filter, 4-Plate and frame filter press, 5-Receiving device, 6-Fresh catalyst tank, 7-Receiving box, 8-Blocking plate, 9-Bend connecting rod, 10-Long connecting rod, 11-Support platform, 12-Base plate, 13-First baffle, 14-Second baffle, 15-Small bevel gear, 16-Large bevel gear, 17-Long cam, 18-Slide seat, 19-Long sliding pin, 20-Short connecting rod, 21-V-groove, 22-Wave groove, 23-Long guide rod, 24-Weighting spring, 25-Cylindrical seat, 26-Circular... Column cylinder, 27-spur gear, 28-spur rack, 29-first spring, 30-spring seat, 31-square guide rod, 32-square slide block, 33-first cylindrical pad, 34-short sliding pin, 35-L-shaped slide groove, 36-contact switch, 37-first motor, 38-first pulley, 39-second pulley, 40-long rotating shaft, 41-second spring, 42-second cylindrical pad, 43-second helical gear, 44-first helical gear, 45-first bevel gear, 46-second bevel gear, 47-drive shaft, 48-first track wheel, 49-second track wheel, 50-stop seat. Detailed Implementation

[0028] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] like Figure 1-11As shown, this invention provides a butynediol recovery and reuse device in BDO production, including a waste catalyst slurry tank 1, a waste catalyst slurry pump 2, a plate and frame filter press 4, a receiving device 5, and a fresh catalyst tank 6. The output end of the waste catalyst slurry tank 1 is connected to the input end of the waste catalyst slurry pump 2, and the output end of the waste catalyst is connected to the input end of the plate and frame filter press 4. The first output end of the plate and frame filter press 4 is connected to the fresh catalyst tank 6, and the second output end of the plate and frame filter press 4 is connected to the receiving device 5. The receiving device 5 includes a movable base plate 12, and a vertically movable support platform 11 is provided on the upper end of the base plate 12. When the support platform 11 moves downward to the bottom end, it can form a structure in which the base plate 12 moves. A receiving box 7 is provided on the upper end of the support platform 11, and a rotatable long cam 17 is also provided on the upper end of the support platform 11. When the long cam 17 rotates, it can form a structure in which the receiving box 7 flips upward and then oscillates.

[0030] like Figure 1-5As shown, the waste catalyst slurry tank 1 is used to hold the waste catalyst liquid slurry flowing out of the thickening filter. The liquid slurry in the waste catalyst slurry tank 1 can enter the input end of the waste catalyst slurry pump 2 by free fall, or it can be guided into the input end of the waste catalyst slurry pump 2 through a pipe connection. The output of the waste catalyst slurry pump 2 can transport the liquid slurry to the plate and frame filter press 4. The plate and frame filter press 4 is a filtration device with intermittent operation, suitable for treating butyne diol catalyst slurry with high viscosity, fine particles, and strong corrosiveness. It can be widely used in the chemical industry to separate the suspension into solid and liquid components. After the feed filter plate is pressed, check the opening of each pipeline valve. After confirming the closed state is correct, start the waste catalyst slurry pump 2 feed pump. When feeding from the storage tank, directly open the feed valve. When opening the feed valve, proceed slowly to the desired position. The liquid will then enter each filter chamber through the feed hole on the fixed pressure plate, achieving pressure filtration within the specified pressure range to form a filter cake. Stop feeding when the filtrate level drops. The feeding and filtration process should not be interrupted; it should be continuous to ensure the filter cake forms in one go and reduces the moisture content. After the filter cake is washed and filtered, wash water is introduced into each filter chamber through the washing hole to permeate the filter cake layer. Washing is used to recover the effective components in the filter cake or remove harmful components. The water pressure should generally be slightly higher than the feed pressure, and the washing time should be determined according to the material requirements and actual conditions. Air blowing is a method to reduce moisture content. Open the air blowing valve, and compressed air enters the filter cake layer through the air blowing channel, carrying away some of the moisture in the filter cake. The air blowing pressure should generally be higher than the feed pressure. Depending on the actual situation, if the moisture content of the filter cake meets the requirements after the feed pressure is adjusted, the air blowing process can be omitted. For hydraulic pressure filter presses, to loosen the filter plates and unload the material, press the "Plate Open" button to start the oil pump. The piston rod will drive the movable plate to reset. To unload, press the "Unload" button, and the high-pressure pump will run, driving the motor to rotate. The two robotic arms pull open the filter plates one by one in sequence. After the filter plates are opened, the filter cake automatically peels off from the filter cloth by its own weight. When the filter cloth's retention capacity declines, it needs to be cleaned or replaced. After being re-smoothed, the next work cycle begins. Through the processing of the plate and frame filter press 4, the slurry can be separated into solid and liquid components. The separated clear liquid flows from the first output end into the fresh catalyst tank 6, increasing the butyne diol clear liquid recovery rate to over 90%. After filtration, it becomes solid waste catalyst, which falls from the second output end into the receiving device 5, which is used to collect solid waste catalyst. Figure 1As shown, the traditional butynediol recovery and reuse device connects the catalyst slurry pump output to a disc filter 3. Through the disc filter 3, the liquid slurry returns to the fresh catalyst tank 6, separating the spent catalyst with a moisture content of 80% and recovering 20% ​​butynediol clear liquid back into the system. This method suffers from poor separation efficiency, low recovery rate, and high cost. The improved device replaces the traditional disc filter 3 with a plate and frame filter press 4, increasing the butynediol clear liquid recovery rate to over 90%. After filtration, the spent catalyst becomes solid, improving the recovery rate and reducing costs. The components are: spent catalyst tank 1, spent catalyst slurry pump 2, and plate and frame filter press 4. The disc filter 3 and the fresh catalyst tank 6 are existing technologies and will not be described in detail. The receiving device 5 can collect the solid material after filtration by the plate and frame filter press 4. The material will enter the receiving box 7 under the action of gravity. As the gravity of the receiving box 7 continues to increase, the support platform 11 will move downward. When the material in the receiving box 7 is filled to a certain amount, that is, when the support platform 11 moves downward to the bottom position, the bottom plate 12, the support platform 11, the receiving box 7, etc. will move to the designated position simultaneously. Then, through the rotatable long cam 17, the receiving box 7 can be flipped upward and then oscillated, which can pour the material in the receiving box 7 into the designated position.

[0031] The long cam 17 is rotatably connected to the upper end of the support platform 11. The upper surface of the support platform 11 is also slidably connected to a slide block 18. The inner wall of the slide block 18 is fixed with a long sliding pin 19 that cooperates with the long cam 17. The receiving box 7 is hinged to the front side of the upper surface of the support platform 11. The left and right ends of the slide block 18 are respectively hinged to short connecting rods 20. The other end of the short connecting rods 20 is respectively hinged to the lower surface of the receiving box 7.

[0032] like Figure 4-7 As shown, a rotating shaft is fixed to the inner wall of the center of the long cam 17. Bearing seats are rotatably connected to the front and rear ends of the outer surface of the rotating shaft. The bottom ends of the bearing seats are fixed to the upper surface of the support platform 11, limiting the long cam 17 to rotate only on the support platform 11. A slide block 18 is slidably connected to the upper surface of the support platform 11, limiting the slide block 18 and the long sliding pin 19 to move only back and forth. The installation and shape of the long cam 17 and the long sliding pin 19 are as follows: Figure 6-7As shown, the outer surface of the long cam 17 is provided with a V-shaped groove 21 and a wave groove 22 that mesh with the long sliding pin 19. When the long cam 17 rotates, the meshing of the V-shaped groove 21 and the wave groove 22 allows the long sliding pin 19 to move forward or backward. When the long sliding pin 19 meshes with the wave groove 22, it will move back and forth slightly. When the long cam 17 rotates, the meshing of the V-shaped groove 21 with the long sliding pin 19 will cause the long sliding pin 19 and the slide block 18 to move backward synchronously. When the slide block 18 moves backward, it will drive one end of the short connecting rod 20 to move backward, and the other end of the short connecting rod 20 will drive the receiving box 7 to flip upward. When the receiving box 7 flips upward, the material will be poured into the designated position. When the long cam 17 continues to rotate, it will engage with the long sliding pin 19, which will then engage with the wave groove 22. When the long sliding pin 19 engages with the wave groove 22, the long sliding pin 19 and the slide block 18 will move back and forth slightly. When the slide block 18 moves back and forth slightly, it will drive the corresponding receiving box 7 to oscillate up and down slightly, making the material pour out more cleanly. Under the action of inertia, the material will be thrown out, preventing some of it from sticking to the inner wall of the bottom of the receiving box 7. When the long cam 17 continues to rotate, the receiving box 7 and other components will be reset. The principle is the same and will not be described again.

[0033] The front end of the receiving box 7 is hinged to a blocking plate 8. The left and right ends of the blocking plate 8 are respectively fixed to a folding connecting rod 9. The upper end of the folding connecting rod 9 is respectively hinged to a long connecting rod 10 that tilts downward to the rear side. The other end of the long connecting rod 10 is hinged to the support platform 11.

[0034] like Figure 3-5 As shown, when the receiving box 7 is flipped upward, the long connecting rod 10 and the folding connecting rod 9 are hinged and limited, which allows the blocking plate 8 to flip upward along the receiving box 7, thereby opening the rear door of the receiving box 7 and allowing the material to flow into the designated position. When the receiving box 7 is flipped downward, the blocking plate 8 can flip downward to close the receiving box 7 for receiving materials.

[0035] A first motor 37 is fixedly connected to the lower surface of the base plate 12. A first pulley 38 is fixedly connected to the output end of the first motor 37. A second pulley 39 is connected to one side of the first pulley 38. A long rotating shaft 40 is slidably connected to the inner wall of the second pulley 39. A first helical gear 44, which is rotatably connected to the base plate 12, is slidably connected to the front end of the outer surface of the long rotating shaft 40. A second helical gear 43 meshes with the lower end of the first helical gear 44. A first track wheel 48, which is rotatably connected to the base plate 12, is coaxially fixed to the left and right ends of the second helical gear 43. A stop 50, which is slidably connected to the long rotating shaft 40, is fixedly connected to the front side of the lower surface of the base plate 12. A second spring 41 is sleeved on the front end of the outer surface of the long rotating shaft 40. A second cylindrical pad 42, which cooperates with the second spring 41, is rotatably connected to the front end surface of the long rotating shaft 40. A second baffle 14, which cooperates with the second cylindrical pad 42, is provided at the front end of the base plate 12.

[0036] like Figure 11 As shown, a support base is fixed to the lower surface of the base plate 12. The second pulley 39 and the first helical gear 44 are rotatably connected to the inner wall of the support base, limiting the second pulley 39 and the first helical gear 44 to only rotate. One end of the second spring 41 is fixed to the front surface of the stop 50, and the other end of the second spring 41 is fixed to the second cylindrical pad 42, limiting the second cylindrical pad 42 to not rotate. A rotating shaft is fixed to the inner wall of the center of the second helical gear 43 and the first track wheel 48, respectively. A bearing seat is rotatably connected to the outer surface of the rotating shaft, and the bottom end of the bearing seat is fixed to the lower surface of the base plate 12, limiting the first track wheel 48 and the second helical gear 43 to only rotate. The long rotating shaft 40 is splinedly connected to the second pulley 39 and the first helical gear 44. The long rotating shaft 40 can slide back and forth on the inner wall of the second pulley 39 and the first helical gear 44, and can also drive the second pulley 39 to rotate when it rotates. The long rotating shaft 40 and the first helical gear 44 rotate; two second track wheels 49 are rotatably connected to the rear side of the lower end of the base plate 12. The first track wheel 48 and the second track wheel 49 can drive the base plate 12 to move stably; the function of the first motor 37 is to provide rotational power to the first pulley 38. The motor is existing technology and will not be described in detail; the second spring 41 can make the long rotating shaft 40 mesh stably with the second pulley 39 and the first helical gear 44; when the first motor 37 is started, the corresponding first pulley 38 will rotate. The rotation of the first pulley 38 will drive the second pulley 39 and the long rotating shaft 40 to rotate through the belt connection. The rotation of the long rotating shaft 40 will cause the corresponding first helical gear 44, second helical gear 43 and the first track wheel 48 to rotate synchronously. When the first track wheel 48 rotates, the base plate 12, i.e. the receiving device 5, will move forward.

[0037] A first bevel gear 45 is fixedly connected to the rear end of the outer surface of the long rotating shaft 40. A transmission shaft 47 is rotatably connected to the inner wall of the support platform 11. A small bevel gear 15 is fixedly connected to the upper end of the outer surface of the transmission shaft 47. A large bevel gear 16 meshes with the upper end of the small bevel gear 15. The large bevel gear 16 is coaxially fixedly connected to the long cam 17. A second bevel gear 46 is slidably connected to the lower end of the outer surface of the transmission shaft 47, which is rotatably connected to the base plate 12 and cooperates with the first bevel gear 45.

[0038] like Figure 3 , 5As shown in Figure 11, the second bevel gear 46 is rotatably connected to the inner wall of the base plate 12. The drive shaft 47 and the second bevel gear 46 are splined. The drive shaft 47 can move up and down with the support platform 11, and when the second bevel gear 46 rotates, it can also drive the drive shaft 47 to rotate. When the base plate 12, i.e., the receiving device 5, moves to the designated position, i.e., the foremost position, the corresponding second cylindrical pad 42 will contact the second baffle 14. When the receiving device 5 continues to move forward, due to the contact between the second cylindrical pad 42 and the second baffle 14, i.e., the second cylindrical pad 42 and the long rotating shaft 40 no longer move forward. At this time, the long rotating shaft 40 moves backward relative to the receiving device 5 and compresses the second spring 41. When the long rotating shaft 40 and the first bevel gear 45 move backward to the position of the receiving device 5, the long rotating shaft 40 moves backward relative to the receiving device 5 and compresses the second spring 41. When the second bevel gear 46 meshes, the long rotating shaft 40 disengages from the first helical gear 44. That is, when the long rotating shaft 40 rotates, it no longer drives the first helical gear 44 to rotate, and the receiving device 5 stops moving. When the first motor 37 continues to work, it will cause the corresponding long rotating shaft 40 and the first bevel gear 45 to continue to rotate. The rotation of the first bevel gear 45, through meshing, will cause the corresponding second bevel gear 46, transmission shaft 47, small bevel gear 15, large bevel gear 16, and long cam 17 to rotate. When the long cam 17 rotates, it will unload the material in the receiving box 7, thereby unloading the material in the receiving box 7 to the designated position. When the device needs to be reset, controlling the second motor to reverse will reset the device to the initial position. The principle is the same and will not be described again.

[0039] Long guide rods 23 are fixedly connected to the four corners of the lower surface of the support platform 11. The long guide rods 23 are slidably connected to the inner wall of the base plate 12. Weight springs 24 are respectively sleeved on the outer surface of the long guide rods 23. Anti-detachment caps that cooperate with the base plate 12 are fixedly connected to the lower surface of the long guide rods 23.

[0040] like Figure 8 As shown, the upper end of the weighing spring 24 is fixed to the lower surface of the support platform 11, and the lower end of the weighing spring 24 is fixed to the upper surface of the base plate 12. The long guide rod 23 is slidably connected to the inner wall of the base plate 12. The support platform 11 can only move up and down due to the limiting of the long guide rod 23. The anti-detachment cap can prevent the long guide rod 23 from detaching from the base plate 12. When the receiving box 7 is filled with material, the weighing spring 24 will be compressed and contracted downward under the action of gravity, that is, the support platform 11 will move downward.

[0041] A cylindrical tube 26 is rotatably connected to the inner wall of the base plate 12. A cylindrical seat 25 fixed to the support platform 11 is provided on the inner wall of the cylindrical tube 26. Two centrally symmetrical L-shaped grooves 35 are opened on the outer surface of the cylindrical tube 26. Two short sliding pins 34 that cooperate with the corresponding L-shaped grooves 35 are fixed to the outer surface of the cylindrical seat 25. A spur gear 27 is fixed to the lower end of the outer surface of the cylindrical tube 26. A spur rack 28 meshes on the outer surface of the spur gear 27. The spur rack 28 is slidably connected to the lower end surface of the base plate 12. An outwardly extending square guide rod 31 is fixed to the rear end surface of the spur rack 28. A first cylindrical pad 33 is fixed to the front end surface of the square guide rod 31. A first baffle 13 that cooperates with the first cylindrical pad 33 is provided at the rear end of the base plate 12. A first spring 29 is fixed to the front end surface of the spur rack 28. A spring seat 30 is also fixed to the other end of the first spring 29. The bottom end of the spring seat 30 is fixed to the lower end surface of the base plate 12.

[0042] like Figure 8-10 As shown, the cylindrical tube 26 can rotate on the inner wall of the base plate 12. A square slide block 32 is fixedly connected to the front side of the lower surface of the base plate 12. The square guide rod 31 is slidably connected to the inner wall of the square slide block 32. The cylindrical seat 25 is limited by the support platform 11, so that the cylindrical seat 25 can only move up and down. The other end of the first spring 29 is also fixedly connected to a spring seat 30. The bottom end of the spring seat 30 is fixedly connected to the lower surface of the base plate 12, limiting and supporting the first spring 29. The first spring 29 always has a backward thrust, so that the spur rack 28 has a forward driving force and the spur gear 27 has a rotational driving force. The installation and shape of the L-shaped slide groove 35 and the short slide pin 34 are as follows. Figure 10 As shown, the L-shaped slide 35, through the setting of the short sliding pin 34, when the short sliding pin 34 moves downward to the bottom end, will cause the cylindrical cylinder 26 to rotate under the elastic force of the first spring 29; after the cylindrical cylinder 26 rotates, through the engagement of the short sliding pin 34 with the L-shaped slide 35, that is, after the short sliding pin 34 moves to the inner wall of the bottom end of the L-shaped slide 35, it will block the corresponding cylindrical seat 25 from moving upward; the inner wall of the bottom end of the cylindrical cylinder 26 is provided with a contact switch 36, such as... Figure 10As shown, the first motor 37 and the power supply are connected in series via contact switch 36. When the cylindrical base 25 moves downward to the bottom, it will press contact switch 36, thus closing the circuit and allowing the first motor 37 to work normally. Contact switch 36 is existing technology and will not be described in detail. When the material in the receiving box 7 reaches a certain amount, gravity will cause the receiving box 7, support platform 11, and cylindrical base 25 to move downward. When the cylindrical base 25 moves downward to the bottom, it will press contact switch 36. Under the elastic force of the first spring 29, the rack 28 and the first cylindrical pad 33 will move forward, and the cylindrical cylinder 26 will rotate. At this time, the corresponding first motor 37 will start working, thus moving the device forward. When it moves forward to the designated position, the second cylindrical pad 42 will contact the second baffle 14. At this time, the long cam 17 will rotate to unload the material in the receiving box 7 to the designated position. After unloading is completed, controlling the first motor 37 to reverse will cause the device to move in the opposite direction. When the device moves to the designated position, that is, the first cylindrical pad 33 moves backward to contact the first baffle 13, and when the device continues to move backward, it will drive the rack 28 to compress the first spring 29 and move forward relative to each other, that is, the spur gear 27 and the cylindrical cylinder 26 will rotate in the opposite direction. After the cylindrical cylinder 26 rotates in the opposite direction, the corresponding short sliding pin 34 will move to the long groove side of the L-shaped slide 35. At this time, since the material in the receiving box 7 has been unloaded and the gravity is small, the support platform 11 and the cylindrical seat 25 will move upward to reset under the elastic force of the weighing spring 24, that is, the short sliding pin 34 moves upward to the bottom position to reset, that is, the cylindrical seat 25 no longer acts. The contact switch 36 is disconnected and the first motor 37 stops working. This cycle can be repeated and reused, fully automatic production transfer, replacing manual operation of unloading, and improving production efficiency.

[0043] In use, this invention utilizes a plate and frame filter press 4 instead of a disc filter 3 to achieve solid-liquid separation of the catalyst slurry and increase the recovery rate of butyrynethiol clear liquid to over 90%. After filtration, the slurry becomes solid waste catalyst with a moisture content of approximately 8%, improving waste liquid utilization and increasing production capacity. The separated solid catalyst is collected in a unified location. When the material in the receiving box 7 reaches the designated weight, it automatically triggers the first motor 37 to start working under its own gravity, moving the entire receiving device 5 forward to the designated position. After reaching the designated position, the receiving box 7 flips upward to unload the material to the designated position, and then the device returns to the initial position, completing the entire unloading process. This fully automated production transfer replaces manual unloading, improving production efficiency.

[0044] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A device for recovering and reusing butyne diol in BDO production, comprising a spent catalyst slurry tank (1), a spent catalyst slurry pump (2), a plate and frame filter press (4), a receiving device (5), and a fresh catalyst tank (6), characterized in that: The output end of the waste catalyst slurry tank (1) is connected to the input end of the waste catalyst slurry pump (2), the output end of the waste catalyst is connected to the input end of the plate and frame filter press (4), the first output end of the plate and frame filter press (4) is connected to the fresh catalyst tank (6), and the second output end of the plate and frame filter press (4) is connected to the receiving device (5); the receiving device (5) includes a movable base plate (12), and the upper end of the base plate (12) is provided with a support platform (11) that can move up and down. When the support platform (11) moves down to the bottom end, it can form a structure in which the base plate (12) moves; the upper end of the support platform (11) is provided with a receiving box (7), and the upper end of the support platform (11) is also provided with a rotatable long cam (17). When the long cam (17) rotates, it can form a structure in which the receiving box (7) flips up and then oscillates. The inner wall of the base plate (12) is rotatably connected to a cylindrical tube (26). The inner wall of the cylindrical tube (26) is provided with a cylindrical seat (25) fixed to the support platform (11). Two centrally symmetrical L-shaped grooves (35) are opened on the outer surface of the cylindrical tube (26). Two short sliding pins (34) that cooperate with the corresponding L-shaped grooves (35) are fixed on the outer surface of the cylindrical seat (25). A spur gear (27) is fixed to the lower end of the outer surface of the cylindrical tube (26). A rack (28) meshes on the outer surface of the spur gear (27). The rack (28) is slidably connected to the lower end surface of the base plate (12). A square guide rod (31) extending outward is fixed to the rear end surface of the rack (28). A first cylindrical pad (33) is fixed to the front end surface of the square guide rod (31). A first baffle (13) that cooperates with the first cylindrical pad (33) is provided at the rear end of the base plate (12). A first spring (29) is fixed to the front end surface of the rack (28). The other end of the first spring (29) is also fixedly connected to a spring seat (30), and the bottom end of the spring seat (30) is fixedly connected to the lower surface of the base plate (12).

2. The butyne diol recovery and reuse device in BDO production as described in claim 1, characterized in that: The long cam (17) is rotatably connected to the upper end of the support platform (11). The upper surface of the support platform (11) is also slidably connected to a slide block (18). The inner wall of the slide block (18) is fixed with a long sliding pin (19) that cooperates with the long cam (17). The receiving box (7) is hinged to the front side of the upper surface of the support platform (11). The left and right ends of the slide block (18) are respectively hinged to short connecting rods (20). The other end of the short connecting rods (20) is respectively hinged to the lower surface of the receiving box (7).

3. The butyne diol recovery and reuse device in BDO production as described in claim 1, characterized in that: The receiving box (7) is hinged to a blocking plate (8) at the front end. The left and right ends of the blocking plate (8) are respectively fixed with folding connecting rods (9). The upper end of the folding connecting rods (9) is respectively hinged to a long connecting rod (10) that tilts downward to the rear side. The other end of the long connecting rod (10) is hinged to the support platform (11).

4. The butyne diol recovery and reuse device in BDO production as described in claim 1, characterized in that: A first motor (37) is fixedly connected to the lower surface of the base plate (12). A first pulley (38) is fixedly connected to the output end of the first motor (37). A second pulley (39) is connected to one side of the first pulley (38). A long rotating shaft (40) is slidably connected to the inner wall of the second pulley (39). A first helical gear (44) that is rotatably connected to the base plate (12) is slidably connected to the front end of the outer surface of the long rotating shaft (40). A second helical gear (43) meshes with the lower end of the first helical gear (44). The left and right ends are respectively coaxially fixed with a first track wheel (48) that is rotatably connected to the base plate (12). The front side of the lower end surface of the base plate (12) is fixed with a stop (50) that is slidably connected to the long rotating shaft (40). The front end of the outer surface of the long rotating shaft (40) is fitted with a second spring (41). The front end surface of the long rotating shaft (40) is rotatably connected with a second cylindrical pad (42) that cooperates with the second spring (41). The front end of the base plate (12) is provided with a second baffle (14) that cooperates with the second cylindrical pad (42).

5. The butyne diol recovery and reuse device in BDO production as described in claim 4, characterized in that: The long rotating shaft (40) has a first bevel gear (45) fixedly connected to the rear end of its outer surface. The inner wall of the support platform (11) is rotatably connected to a transmission shaft (47). The upper end of the outer surface of the transmission shaft (47) is fixedly connected to a small bevel gear (15). The upper end of the small bevel gear (15) is meshed with a large bevel gear (16). The large bevel gear (16) is coaxially fixedly connected to the long cam (17). The lower end of the outer surface of the transmission shaft (47) is slidably connected to a second bevel gear (46) that is rotatably connected to the base plate (12) and cooperates with the first bevel gear (45).

6. The butyne diol recovery and reuse device in BDO production as described in claim 1, characterized in that: The support platform (11) has four long guide rods (23) fixedly connected to the four corners of its lower surface. The long guide rods (23) are slidably connected to the inner wall of the base plate (12). The outer surface of the long guide rods (23) is fitted with a weight spring (24). The lower surface of the long guide rods (23) is fixedly connected with an anti-slip cap that matches the base plate (12).

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