A continuous separation and reduction treatment system for tetrahydrofuran production circulating water sludge

Abstract

The application provides a continuous separation and reduction treatment system for tetrahydrofuran production circulating water sludge, and belongs to the technical field of tetrahydrofuran production. The continuous separation and reduction treatment system for tetrahydrofuran production circulating water sludge comprises a main frame body, a primary separation tank is fixedly installed at the top of the main frame body, a cylinder screen is arranged in the primary separation tank, a feeding hopper is installed on one side of the primary separation tank, and a secondary separation tank is installed below the screw feeder. By controlling the start of the motor, water in the sedimentation tank can be sucked into the inside of the rectangular frame, sprayed downward by the spray head, that is, sprayed toward the rotating cylinder screen, so that the water sludge in the cylinder screen can be washed and separated, on the one hand, the block-shaped impurities in the water sludge can be quickly exposed, and on the other hand, the water sludge on the surface of the block-shaped impurities can be washed into the inside of the secondary separation tank.

Description

Technical Field

[0001] This invention relates to the field of tetrahydrofuran production technology, and more specifically, to a continuous separation and reduction system for circulating water sludge produced from tetrahydrofuran. Background Technology

[0002] Tetrahydrofuran is an important organic solvent widely used in chemical synthesis, pharmaceutical manufacturing, and polymer production. The use of circulating water is indispensable in the production process of tetrahydrofuran; however, the resulting sludge problem is becoming increasingly prominent. Sludge mainly originates from suspended solids in water and byproducts of the production process. If left untreated, it can lead to environmental pollution and resource waste. Therefore, sludge separation and reduction are crucial. Generally, this process can be achieved through various physical, chemical, and biological methods, such as sedimentation, filtration, and flocculation sedimentation, aiming to effectively remove solid particles and organic matter from water. Meanwhile, in recent years, increasing research has focused on developing novel flocculants and separation technologies to improve sludge settling properties and removal efficiency, thereby achieving resource reuse and the development of a circular economy.

[0003] Existing tetrahydrofuran production circulating water sludge treatment equipment separates screening and impurity removal from flocculation reaction. These two independent sets of equipment not only occupy a large area and consume a lot of energy, but also cannot simultaneously complete the mixing and wetting of the reagents during the screening stage. Sludge agglomeration easily clogs the screen, and large impurities carry sludge, causing material loss. The sludge only settles once and has a high water content. The degree of automation is low, making it difficult to achieve continuous and efficient sludge reduction and clean water reuse. Summary of the Invention

[0004] To overcome the above deficiencies, the present invention provides a continuous separation and reduction treatment system for sludge in tetrahydrofuran production circulating water, which overcomes or at least partially solves the above technical problems.

[0005] This invention is implemented as follows:

[0006] This invention provides a continuous separation and reduction treatment system for circulating water sludge in tetrahydrofuran production, comprising a main frame, a primary separation box fixedly installed on the top of the main frame, a cylindrical screen installed inside the primary separation box, a feed hopper installed on one side of the primary separation box, a screw feeder installed below the primary separation box, a secondary separation box installed below the screw feeder, a sedimentation tank installed below the secondary separation box, a purification tower placed on one side of the sedimentation tank, a water pump installed on one side of the sedimentation tank, a conveying pipe connected between the water pump and the purification tower, a sludge storage tank installed on the other side of the sedimentation tank, an automatic feeder placed on one side of the sludge storage tank, and the bottoms of both the primary and secondary separation boxes being inclined.

[0007] The top of the primary separation tank is equipped with a primary separation mechanism, which is used to separate and reduce impurities in the sludge.

[0008] The secondary separation box is used to separate sludge from water;

[0009] The purification tower is used to purify the water in the sedimentation tank;

[0010] The sludge storage tank is used for the collection of sludge.

[0011] In a preferred embodiment, the primary separation mechanism includes a top frame, which is fixedly installed on the top of the primary separation tank and covers the cylindrical screen. Two sets of rectangular frames are installed on the top of the top frame, and a water suction pipe is fixedly connected to one side of each set of rectangular frames. One end of the water suction pipe extends into the interior of the sedimentation tank. A water distribution frame is fixedly installed on the bottom surface of the interior of the top frame, and multiple nozzles are equidistantly installed on the bottom surface of the water distribution frame.

[0012] In a preferred embodiment, a drain pipe is fixedly connected to one side of the rectangular frame, and a drain pipe is fixedly connected to one end of the drain pipe. One-way valve 2 and one-way valve 1 are respectively installed on the outer surfaces of the drain pipe and the suction pipe. A rectangular pipe is fixedly connected to one end of the drain pipe, and a connecting pipe 1 is connected between the rectangular pipe and the water distribution frame 1. The nozzle 1 faces the outer surface of the cylindrical screen.

[0013] In a preferred embodiment, a fixing plate is fixedly installed on the top of the top frame, and a mounting bracket is fixedly installed on the top of the fixing plate. Gear 1 and Gear 2 are rotatably installed inside the mounting bracket, and gear 1 and gear 2 mesh with each other. Motor 1 is installed on one side of the mounting bracket, and the output end of motor 1 is connected to gear 1. A column is fixedly installed on the top of the fixing plate, and a limit frame is fixedly installed on the top of the column. A limit groove is formed inside the limit frame, and a snap-fit ​​bracket is movably engaged inside the limit groove. A synchronization plate is fixedly installed on one side of the snap-fit ​​bracket.

[0014] In a preferred embodiment, a connecting arm is mounted on the outside of the second gear, and a connecting frame is rotatably connected to one end of the connecting arm. A circulation frame is rotatably connected to the outside of the snap-fit ​​frame, and the circulation frame is connected to the connecting frame. A connecting post is fixedly connected to one side surface of the synchronization plate, and a sealing plug is fixedly connected to one end of the connecting post. The sealing plug is sealed and snapped into the inside of the rectangular frame.

[0015] In a preferred embodiment, a reagent storage box is fixedly installed on the top of the top frame, and a rectangular frame is fixedly installed on the top of the reagent storage box. The reagent storage box stores flocculant inside, and a suction pipe is installed inside the reagent storage box. A connecting pipe II is connected to the top of the suction pipe, and the connecting pipe II is connected to two rectangular frames. One-way valves III are provided at both ends of the connecting pipe II.

[0016] In a preferred embodiment, a through groove is provided inside the limiting groove, and a base frame is movably engaged inside the through groove. A synchronizing rod is inserted inside the medicine storage box, and an installation sleeve is fixedly sleeved on the outer surface of the synchronizing rod inside the medicine storage box. A toggle plate is fixedly installed on the outer surface of the installation sleeve, and the other end of the synchronizing rod is fixedly connected to one side surface of the base frame.

[0017] In a preferred embodiment, L-shaped frames one are fixedly installed on both sides of the fixed plate. A snap-fit ​​plate is movably inserted into the interior of the L-shaped frame one. An extension plate is fixedly connected to one end of the snap-fit ​​plate. L-shaped frames two are fixedly installed on both sides of the extension plate. One end of the L-shaped frame two is connected to the top of the synchronization plate. A plug-in rod is inserted into the interior of the feed hopper. A top block is fixedly installed on the top of the snap-fit ​​plate. One end of the plug-in rod is fixedly connected to one side surface of the top block. A material-pushing plate is fixedly installed at the end of the plug-in rod located inside the feed hopper.

[0018] In a preferred embodiment, three rotating rods are rotatably installed inside the secondary separation box. Two sleeve brackets are fitted onto the outer surfaces of each of the three rotating rods. A baffle plate is fixedly installed on one side of each of the two sleeve brackets. A mud guide plate is installed between the two sets of baffle plates. The two baffle plates are arranged in a V-shape. A motor corresponding to the position of the rotating rods is fixedly installed on the bottom surface of the secondary separation box for driving the movement and adjustment of the two baffle plates. A perforated groove is opened on the inner bottom surface of the secondary separation box near the water sludge storage box. The groove is V-shaped during secondary sludge separation and inverted V-shaped during sludge discharge.

[0019] In a preferred embodiment, a sludge guide frame is provided above the sludge storage tank. The sludge guide frame is movably engaged with the inner side of the main frame and located below the secondary separation tank. An electric telescopic rod is fixedly installed on one side of the sedimentation tank. A connecting block is fixedly installed on the bottom surface of the sludge guide frame, and the output end of the connecting block is connected to one side of the connecting block.

[0020] The present invention provides a continuous separation and reduction treatment system for sludge in the circulating water of tetrahydrofuran production, the beneficial effects of which include:

[0021] 1. By controlling the start of motor one, water from the sedimentation tank is drawn into the rectangular frame, and then discharged into the water distribution frame one through the drain pipe, rectangular pipe and connecting pipe one. Finally, it is sprayed downwards through nozzle one, that is, towards the rotating drum screen, thereby washing and separating the water and sludge inside the drum screen. This allows the water and sludge to fall into the secondary separation tank simultaneously with the water. On the one hand, this ensures that the lumpy impurities in the water and sludge are quickly exposed, and on the other hand, it washes the water and sludge on the outer surface of the lumpy impurities into the secondary separation tank, preventing the outer surface of the discharged lumpy impurities from being mixed with water and sludge. This achieves the goal of more thorough and rapid separation of water and sludge from lumpy impurities, improving the separation efficiency.

[0022] 2. When the sealing plug moves back and forth inside the rectangular frame, it can simultaneously draw the flocculant from the agent storage tank into the rectangular frame during the water absorption process. The flocculant mixes with the water source drawn in through the suction pipe and is then sprayed into the drum screen through the nozzle. This allows the flocculant to be sprayed during the separation of sludge and lumpy impurities. Furthermore, the rotation of the drum screen can improve the mixing degree between the flocculant and the sludge, enabling the flocculant to better facilitate the rapid sedimentation of the sludge in the subsequent process.

[0023] 3. By setting up a flip-up baffle and an electric telescopic rod driven mud guide frame, the automated intermittent discharge of sludge is realized, eliminating the need for manual sludge removal during machine shutdown and ensuring the continuity of the production process; the secondary separation tank is equipped with a second water distribution frame and a second nozzle to continuously distribute liquid to clean the tank body and baffle, preventing sludge adhesion and scaling from affecting the settling efficiency; the clarified water separated in the sedimentation tank is sent to the purification tower for deep treatment via a water pump and conveying pipe, and then returned to the production circulating water system for reuse, realizing a closed-loop water resource circulation, reducing the use of fresh production water, and avoiding the direct discharge of tetrahydrofuran-containing organic wastewater. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is an overall perspective view provided by an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of the overall front view structure provided for an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the overall top structure provided for an embodiment of the present invention;

[0028] Figure 4 A schematic diagram of the cylindrical screen structure provided for an embodiment of the present invention;

[0029] Figure 5 A schematic diagram of the gear structure provided for an embodiment of the present invention;

[0030] Figure 6 A schematic diagram of the toggle plate structure provided for an embodiment of the present invention;

[0031] Figure 7 A schematic diagram of the sealing plug structure provided for an embodiment of the present invention;

[0032] Figure 8 A schematic diagram of the material feeding plate structure provided for an embodiment of the present invention;

[0033] Figure 9 A schematic diagram of the barrier plate structure provided for an embodiment of the present invention;

[0034] Figure 10 A schematic diagram of the mud guide frame structure provided for an embodiment of the present invention.

[0035] In the diagram: 1. Main frame; 2. Primary separation box; 3. Tube screen; 4. Feed hopper; 5. Side frame; 6. Screw feeder; 7. Secondary separation box; 8. Sedimentation tank; 9. Water pump; 10. Purification tower; 11. Conveying pipe; 12. Guide frame; 13. Collection box; 14. Automatic feeder; 15. Water and sludge storage box; 16. Primary separation mechanism; 161. Top frame; 162. Rectangular frame; 163. Suction... 164. Water pipe; 165. One-way valve 1; 166. Drain pipe; 167. One-way valve 2; 168. Rectangular pipe; 169. Connecting pipe 1; 160. Water distribution frame 1; 1610. Sprinkler head 1; 1611. Fixing plate; 1612. Mounting bracket; 1613. Gear 1; 1614. Gear 2; 1615. Motor 1; 1616. Circular through hole; 1617. Connecting arm; 1618. Connecting bracket; 1 619. Circulation frame; 1620. Upright column; 1621. Limiting frame; 1622. Limiting groove; 1623. Snap-fit ​​frame; 1624. Synchronizing plate; 1625. Through groove; 1626. Base frame; 1627. Sealing plug; 1628. Connecting column; 1629. Medicine storage box; 1630. Synchronizing rod; 1631. Mounting sleeve; 1632. Actuating plate; 1633. Connecting pipe II; 163 4. One-way valve three; 1635. Suction pipe; 17. Electric telescopic rod; 18. Connecting block; 19. Mud guide frame; 20. Motor two; 21. Rotating rod; 22. Sleeve frame; 23. Baffle plate; 24. Mud guide plate; 25. Water distribution frame two; 26. Nozzle two; 27. L-shaped frame one; 28. Clip plate; 29. ​​Extension plate; 30. L-shaped frame two; 31. Top block; 32. Insert rod; 33. Material pusher plate. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Reference Figures 1-10 This invention provides a technical solution: a continuous separation and reduction treatment system for sludge in the production of tetrahydrofuran circulating water, comprising a main frame 1, a primary separation box 2 fixedly installed on the top of the main frame 1, a cylindrical screen 3 installed inside the primary separation box 2, a feed hopper 4 installed on one side of the primary separation box 2, wherein a side frame 5 is fixedly connected to one side of the main frame 1, the side frame 5 is set for the stable installation of the feed hopper 4, a screw feeder 6 is installed below the primary separation box 2, a secondary separation box 7 is installed below the screw feeder 6, a sedimentation box 8 is set below the secondary separation box 7, a purification tower 10 is placed on one side of the sedimentation box 8, a water pump 9 is installed on one side of the sedimentation box 8, a conveying pipe 11 is connected between the water pump 9 and the purification tower 10, a water sludge storage box 15 is set on the other side of the sedimentation box 8, an automatic feeder 14 is placed on one side of the water sludge storage box 15, and the bottoms of both the primary separation box 2 and the secondary separation box 7 are inclined.

[0038] The top of the primary separation tank 2 is provided with a primary separation mechanism 16, which is used to separate and reduce impurities in the water sludge.

[0039] The secondary separation tank 7 is used to separate sludge from water;

[0040] The purification tower 10 is used to purify the water in the sedimentation tank 8;

[0041] The sludge storage tank 15 is set up for the collection of sludge;

[0042] Among them, a guide frame 12 is fixedly installed on one side of the primary separation box 2, and a collection box 13 is fixedly installed on one side of the main frame 1. The collection box 13 is located below the guide frame 12.

[0043] During operation, the sludge is first conveyed into the feed hopper 4 by the automatic feeder 14 and then into the drum screen 3. After the sludge enters the drum screen 3, the rotation of the drum screen 3 allows the sludge to fall through the holes into the primary separation box 2. Other blocky impurities in the sludge are discharged into the collection box 13 through the guide frame 12 on one side of the primary separation box 2. This makes the sludge purer in the subsequent processing, thus achieving the first reduction operation of the sludge and removing other large impurities.

[0044] The primary separation mechanism 16 includes a top frame 161, which is fixedly installed on the top of the primary separation tank 2 and covers the cylindrical screen 3. Two sets of rectangular frames 162 are installed on the top of the top frame 161. A water suction pipe 163 is fixedly connected to one side of each set of rectangular frames 162. One end of the water suction pipe 163 extends into the interior of the sedimentation tank 8. A water distribution frame 169 is fixedly installed on the bottom surface of the interior of the top frame 161. Multiple nozzles 1610 are equidistantly installed on the bottom surface of the water distribution frame 169. A drain pipe 165 is fixedly connected to one side of the rectangular frames 162. One end of the drain pipe 165 is fixedly connected to... There is a drain pipe 165. One-way valve 166 and one-way valve 164 are respectively installed on the outer surfaces of the drain pipe 165 and the suction pipe 163. A rectangular pipe 167 is fixedly connected to one end of the drain pipe 165. A connecting pipe 168 connects the rectangular pipe 167 and the water distribution frame 169. The nozzle 1610 faces the outer surface of the drum screen 3. A fixing plate 1611 is fixedly installed on the top of the top frame 161. A mounting frame 1612 is fixedly installed on the top of the fixing plate 1611. Gear 1613 and gear 1614 are rotatably installed inside the mounting frame 1612. Gear 1613 and gear 1614 are rotatably installed inside the mounting frame 1612. Gear 613 meshes with gear 1614. Motor 1615 is mounted on one side of mounting bracket 1612, and its output is connected to gear 1613. A column 1620 is fixedly mounted on the top of fixing plate 1611, and a limit bracket 1621 is fixedly mounted on the top of column 1620. A limit groove 1622 is formed inside the limit bracket 1621, and a locking bracket 1623 is movably engaged inside the limit groove 1622. A synchronization plate 1624 is fixedly mounted on one side of locking bracket 1623. A connecting arm 1 is mounted on the outside of gear 1614. 617, one end of the connecting arm 1617 is rotatably connected to the connecting frame 1618, the outside of the snap-fit ​​frame 1623 is rotatably connected to the circulation frame 1619, the circulation frame 1619 is connected to the connecting frame 1618, one side surface of the synchronization plate 1624 is fixedly connected to the connecting post 1628, one end of the connecting post 1628 is fixedly connected to the sealing plug 1627, the sealing plug 1627 is sealed and snapped into the inside of the rectangular frame 162, the top surface of the fixing plate 1611 is provided with a circular through hole 1616, the circular through hole 1616 is provided for the weight reduction of the fixing plate 1611.

[0045] During operation, in the process of separating silt and lumpy impurities, starting the motor 1615 drives the gear 1613 to rotate, which in turn drives the meshing gear 1614 to rotate. This, in turn, under the action of the connecting arm 1617, connecting frame 1618, and circulation frame 1619, causes the locking frame 1623 to move back and forth inside the limiting groove 1622. This, in turn, drives the synchronous plate 1624 to move synchronously. During the movement of the synchronous plate 1624, the connecting column 1628 and sealing plug 1627 move synchronously, drawing water from the sedimentation tank 8 into the rectangular frame 162, and then through the drain pipe 165... The rectangular tube 167 and the connecting pipe 168 are used to discharge water into the water distribution frame 169. Finally, the water is sprayed downwards through the nozzle 1610, that is, towards the rotating drum screen 3. This washes and separates the water and sludge inside the drum screen 3, allowing the water and sludge to fall into the secondary separation box 7 along with the water. This ensures that the lumpy impurities in the water and sludge are quickly exposed, and washes the water and sludge on the outer surface of the lumpy impurities into the secondary separation box 7. This prevents the outer surface of the discharged lumpy impurities from being mixed with water and sludge, thus achieving a more thorough and rapid separation of water and sludge from lumpy impurities and improving the separation efficiency.

[0046] A reagent storage box 1629 is fixedly installed on the top of the top frame 161. A rectangular frame 162 is fixedly installed on the top of the reagent storage box 1629. The reagent storage box 1629 stores flocculant. A suction pipe 1635 is installed inside the reagent storage box 1629. A connecting pipe 1633 is connected to the top of the suction pipe 1635. The connecting pipe 1633 is connected to two rectangular frames 162. One-way valves 1634 are installed at both ends of the connecting pipe 1633. A through slot 1625 is provided inside the slot 1622. A base frame 1626 is movably engaged inside the through slot 1625. A synchronizing rod 1630 is inserted inside the medicine storage box 1629. An installation bracket 1631 is fixedly sleeved on the outer surface of the synchronizing rod 1630 inside the medicine storage box 1629. An actuating plate 1632 is fixedly installed on the outer surface of the installation bracket 1631. The other end of the synchronizing rod 1630 is fixedly connected to one side surface of the base frame 1626.

[0047] During operation, when the sealing plug 1627 moves back and forth inside the rectangular frame 162, it can simultaneously draw the flocculant inside the agent storage tank 1629 into the rectangular frame 162 during the water absorption process. The flocculant mixes with the water source drawn in through the suction pipe 163 and is sprayed into the drum screen 3 through the nozzle 1610. This allows the flocculant to be sprayed during the separation of water sludge and lumpy impurities. Furthermore, the rotation of the drum screen 3 can improve the mixing degree between the flocculant and the water sludge, allowing the flocculant to better facilitate the rapid deposition of sludge in the subsequent process.

[0048] Both sides of the fixed plate 1611 are fixedly installed with L-shaped frame 1 27. The L-shaped frame 1 27 is movably inserted with a snap-fit ​​plate 28. One end of the snap-fit ​​plate 28 is fixedly connected with an extension plate 29. Both sides of the extension plate 29 are fixedly installed with L-shaped frame 2 30. One end of the L-shaped frame 2 30 is connected to the top of the synchronous plate 1624. The feed hopper 4 is inserted with a plug rod 32. The top of the snap-fit ​​plate 28 is fixedly installed with a top block 31. One end of the plug rod 32 is fixedly connected to one side surface of the top block 31. The end of the plug rod 32 located inside the feed hopper 4 is fixedly installed with a material feeding plate 33.

[0049] During operation, as the synchronous plate 1624 moves, it can also drive the snap-fit ​​plate 28 to move synchronously inside the L-shaped frame 27 under the action of the L-shaped frame 20 and the extension plate 29. This can then drive the plug rod 32 to move back and forth inside the feed hopper 4, thereby moving the water and sludge conveyed into the feed hopper 4. This allows the water and sludge inside the feed hopper 4 to enter the drum screen 3 better, preventing the water and sludge from clogging the feed hopper 4 and causing the problem of material not being able to be discharged.

[0050] The secondary separation box 7 has three rotating rods 21 rotatably mounted inside. Each of the three rotating rods 21 has two sleeve brackets 22 fitted onto its outer surface. A baffle plate 23 is fixedly installed on one side of each sleeve bracket 22. A guide plate 24 is installed between the two sets of baffle plates 23. The two baffle plates 23 are V-shaped. A motor 20, corresponding to the position of the rotating rods 21, is fixedly installed on the bottom surface of the secondary separation box 7 to drive the movement and adjustment of the two baffle plates 23. A perforated groove is opened through the bottom surface of the secondary separation box 7 near the water sludge storage tank 15 to allow the sludge to pass through. The secondary separation is V-shaped, and the sludge discharge is an inverted V. A sludge guide frame 19 is installed above the water sludge storage tank 15. The sludge guide frame 19 is movably clipped to the inside of the main frame 1 and located below the secondary separation tank 7. An electric telescopic rod 17 is fixedly installed on one side of the sedimentation tank 8. A connecting block 18 is fixedly installed on the bottom surface of the sludge guide frame 19. The output end of the connecting block 18 is connected to one side of the connecting block 18. A water distribution frame 25 is fixedly installed on one side of the inner wall of the secondary separation tank 7. Multiple nozzles 26 are fixedly installed on one side of the water distribution frame 25.

[0051] During operation, the mixture of separated sludge and water enters the screw feeder 6 through the primary separation tank 2 and is conveyed by the screw feeder 6 to one end of the secondary separation tank 7. Because the bottom of the secondary separation tank 7 is designed to slope downwards, when the mixture falls into the secondary separation tank 7, it is blocked by the baffles 23, causing the flocculated sludge to fall between the two baffles 23 for unified collection. The water overflows the edges of the two baffles 23 and flows towards the bottom of the secondary separation tank 7. After being collected by multiple sets of baffles 23, it finally flows into the sedimentation tank 8 through a trough for sedimentation. The flocculated sludge is collected between multiple sets of baffles 23. After the water flows into the sedimentation tank 8 and settles, The water can be pumped into the purification tower 10 for treatment via pump 9 and delivery pipe 11. The treated water can be recycled. When collecting the flocculated sludge between the two baffles 23, simply control the rotation of motor 20 to make the originally V-shaped baffles 23 turn into an inverted V. By controlling the extension and retraction of electric telescopic rod 17, the mud guide frame 19 is driven to the position of the trough. The flocculated sludge can slide down through the secondary separation box 7 into the mud guide frame 19 and finally enter the water sludge storage box 15 for unified collection. By controlling the start of the external pump, water is pumped into the water distribution frame 25 and finally sprayed out through nozzle 26 towards the baffles 23 to flush the baffles 23, so that the sludge can be completely collected.

[0052] Specifically, the working process or principle of the continuous separation and reduction treatment system for sludge in tetrahydrofuran production circulating water is as follows: During use, the circulating water sludge discharged from the tetrahydrofuran production section is lifted and transported to the inside of the feed hopper 4 by the automatic feeder 14. The synchronous motor 1615 is started, and through the meshing transmission of gear 1613 and gear 2614, the crank connecting rod mechanism drives the synchronous plate 1624 to reciprocate linearly. On the one hand, the synchronous plate 1624 drives the plug rod 32 and the material feeding plate 33 to reciprocate inside the feed hopper 4 through the L-shaped frame 20, the extension plate 29, and the snap-fit ​​plate 28, continuously stirring the viscous sludge, preventing the feed frame from bridging and ensuring that the sludge is continuously and evenly fed into the drum screen 3. On the other hand, the synchronous plate 1624 drives the sealing plug 1627 to push and pull back and forth inside the rectangular frame 162, alternately completing the two processes of water and drug absorption and flocculation mixture distribution and wetting.

[0053] When the sealing plug 1627 is pulled outward, a negative pressure is formed in the inner cavity of the rectangular frame 162. The circulating clean water in the sedimentation tank 8 is drawn out through the water suction pipe 163, and at the same time, the flocculant inside the agent storage tank 1629 is drawn out through the connecting pipe 1633. The clean water and flocculant are pre-mixed in the inner cavity of the rectangular frame 162. The synchronous rod 1630 is linked with the synchronous plate 1624, which drives the mounting sleeve 1631 and the agitator plate 1632 to stir back and forth in the agent storage tank 1629 to prevent the flocculant from settling and stratifying. When the sealing plug 1627 is pushed into the compression chamber, the mixed flocculent liquid is transported to the water distribution frame 169 through the drain pipe 165, rectangular pipe 167, and connecting pipe 168. Then, the spray nozzle 1610 evenly distributes the mixed flocculent liquid to wet the sludge in the drum screen 3, fully breaking up the sludge clumps. The fine mud and water fall through the screen holes of the drum screen 3 by their own weight and fall into the primary separation box 2. The blocky solid impurities are intercepted by the drum screen 3 and discharged into the collection box 13 along the guide frame 12, completing the primary sludge removal and reduction.

[0054] After flocculation and mixing, the mud-water mixture flows by gravity into the screw feeder 6 at the bottom of the inclined primary separation tank 2, and is then conveyed by the screw feeder 6 to the secondary separation tank 7 in a closed manner. Inside the secondary separation tank 7, motor 20 drives the rotating rod 21 and the connecting frame 22 to drive multiple sets of baffles 23 to maintain a V-shaped arrangement. As the mud and water flow from top to bottom, the sludge flocs are intercepted and settled step by step by the V-shaped baffles 23. The clarified supernatant flows into the sedimentation tank 8 from the bottom trough of the secondary separation tank 7, completing the initial separation of mud and water. The clarified water in the sedimentation tank 8 is pumped out by the water pump 9 and conveyed to the purification tower 10 for deep purification through the conveying pipe 11, and then returned to the tetrahydrofuran production circulating water system for reuse.

[0055] When the sludge in the V-shaped trough of the secondary separation tank 7 accumulates to the treatment threshold, the control system triggers motor 20 to reverse, causing the baffle plate 23 to flip into an inverted V shape. The accumulated concentrated sludge loses its support and slides down along the guide plate 24. The synchronous electric telescopic rod 17 drives the connecting block 18 to push the guide frame 19 to move below the trough of the secondary separation tank 7. The concentrated sludge falls along the guide frame 19 into the water sludge storage tank 15 for centralized collection. The secondary separation tank 7 is equipped with a water distribution frame 25 and a spray nozzle 26 to continuously distribute liquid and rinse the tank body and the baffle plate 23 to prevent sludge from adhering and scaling. The entire process is repeated, realizing the integrated fully automatic treatment of continuous separation, synchronous flocculation, two-stage volume reduction, and clean water recycling of sludge in tetrahydrofuran production circulating water.

[0056] It should be noted that the purification tower 10 and the motor 1615 are existing devices or equipment, or devices or equipment that can be implemented with existing technology. Their power supply, specific composition and principle are clear to those skilled in the art, so they will not be described in detail.

Claims

1. A continuous separation and reduction treatment system for sludge from tetrahydrofuran production circulating water, comprising a main frame (1), characterized in that, A primary separation box (2) is fixedly installed on the top of the main frame (1). A cylindrical screen (3) is installed inside the primary separation box (2). A feed hopper (4) is installed on one side of the primary separation box (2). A screw feeder (6) is installed below the primary separation box (2). A secondary separation box (7) is installed below the screw feeder (6). A sedimentation box (8) is installed below the secondary separation box (7). A purification tower (10) is placed on one side of the sedimentation box (8). A water pump (9) is installed on one side of the sedimentation box (8). A conveying pipe (11) is connected between the water pump (9) and the purification tower (10). A water sludge storage box (15) is set on the other side of the sedimentation box (8). An automatic feeder (14) is placed on one side of the water sludge storage box (15). The bottoms of the primary separation box (2) and the secondary separation box (7) are both inclined. The top of the primary separation box (2) is provided with a primary separation mechanism (16), which is used to separate and reduce impurities in the sludge. The secondary separation box (7) is used to separate sludge from water; The purification tower (10) is used to purify the water in the sedimentation tank (8); The sludge storage tank (15) is set up for the collection of sludge.

2. The continuous separation and reduction treatment system for sludge from tetrahydrofuran production circulating water according to claim 1, characterized in that, The primary separation mechanism (16) includes a top frame (161), which is fixedly installed on the top of the primary separation box (2) and covers the cylindrical screen (3). Two sets of rectangular frames (162) are installed on the top of the top frame (161). A water suction pipe (163) is fixedly connected to one side of each of the two sets of rectangular frames (162). One end of the water suction pipe (163) extends into the interior of the sedimentation tank (8). A water distribution frame (169) is fixedly installed on the bottom surface of the top frame (161). Multiple nozzles (1610) are installed at equal intervals on the bottom surface of the water distribution frame (169).

3. The continuous separation and reduction treatment system for sludge from tetrahydrofuran production circulating water according to claim 2, characterized in that, A drain pipe (165) is fixedly connected to one side of the rectangular frame (162). A drain pipe (165) is fixedly connected to one end of the drain pipe (165). A one-way valve (166) and a one-way valve (164) are respectively installed on the outer surfaces of the drain pipe (165) and the suction pipe (163). A rectangular pipe (167) is fixedly connected to one end of the drain pipe (165). A connecting pipe (168) is connected between the rectangular pipe (167) and the water distribution frame (169). The nozzle (1610) faces the outer surface of the cylindrical screen (3).

4. The continuous separation and reduction treatment system for sludge from tetrahydrofuran production circulating water according to claim 3, characterized in that, A fixing plate (1611) is fixedly installed on the top of the top frame (1611), and a mounting bracket (1612) is fixedly installed on the top of the fixing plate (1611). Gear 1 (1613) and gear 2 (1614) are rotatably installed inside the mounting bracket (1612). Gear 1 (1613) and gear 2 (1614) mesh with each other. A motor 1 (1615) is installed on one side of the mounting bracket (1612). 5) The output end is connected to gear 1 (1613). A column (1620) is fixedly installed on the top of the fixed plate (1611). A limit frame (1621) is fixedly installed on the top of the column (1620). A limit groove (1622) is opened inside the limit frame (1621). A snap-fit ​​bracket (1623) is movably snapped into the inside of the limit groove (1622). A synchronization plate (1624) is fixedly installed on one side of the snap-fit ​​bracket (1623).

5. The continuous separation and reduction treatment system for sludge in tetrahydrofuran production circulating water according to claim 4, characterized in that, A connecting arm (1617) is mounted on the outside of the gear two (1614). One end of the connecting arm (1617) is rotatably connected to a connecting frame (1618). A circulation frame (1619) is rotatably connected to the outside of the snap-fit ​​frame (1623). The circulation frame (1619) is connected to the connecting frame (1618). A connecting column (1628) is fixedly connected to one side surface of the synchronization plate (1624). A sealing plug (1627) is fixedly connected to one end of the connecting column (1628). The sealing plug (1627) is sealed and snapped into the inside of the rectangular frame (162).

6. The continuous separation and reduction treatment system for sludge from tetrahydrofuran production circulating water according to claim 5, characterized in that, A drug storage box (1629) is fixedly installed on the top of the top frame (161). The rectangular frame (162) is fixedly installed on the top of the drug storage box (1629). The drug storage box (1629) stores flocculant inside. A suction pipe (1635) is installed inside the drug storage box (1629). A connecting pipe (1633) is connected to the top of the suction pipe (1635). The connecting pipe (1633) is connected to the two rectangular frames (162). One-way valves (1634) are provided at both ends of the connecting pipe (1633).

7. The continuous separation and reduction treatment system for sludge from tetrahydrofuran production circulating water according to claim 6, characterized in that, The limiting groove (1622) has a through groove (1625) inside, and a base frame (1626) is movably connected inside the through groove (1625). A synchronizing rod (1630) is inserted inside the medicine storage box (1629). An installation sleeve (1631) is fixedly sleeved on the outer surface of the synchronizing rod (1630) inside the medicine storage box (1629). A toggle plate (1632) is fixedly installed on the outer surface of the installation sleeve (1631). The other end of the synchronizing rod (1630) is fixedly connected to one side surface of the base frame (1626).

8. The continuous separation and reduction treatment system for sludge from tetrahydrofuran production circulating water according to claim 7, characterized in that, Both sides of the fixed plate (1611) are fixedly installed with L-shaped frame one (27). The L-shaped frame one (27) is movably inserted with a snap-fit ​​plate (28). One end of the snap-fit ​​plate (28) is fixedly connected with an extension plate (29). Both sides of the extension plate (29) are fixedly installed with L-shaped frame two (30). One end of the L-shaped frame two (30) is connected to the top of the synchronization plate (1624). The feed hopper (4) is inserted with a plug rod (32). The top of the snap-fit ​​plate (28) is fixedly installed with a top block (31). One end of the plug rod (32) is fixedly connected to one side surface of the top block (31). The end of the plug rod (32) located inside the feed hopper (4) is fixedly installed with a material-pulling plate (33).

9. A continuous separation and reduction treatment system for sludge from tetrahydrofuran production circulating water according to claim 8, characterized in that, The secondary separation box (7) has three rotating rods (21) installed inside. Two sleeve brackets (22) are fitted on the outer surface of each of the three rotating rods (21). A baffle plate (23) is fixedly installed on one side of each of the two sleeve brackets (22). A mud guide plate (24) is installed between the two sets of baffle plates (23). The two baffle plates (23) are set in a V shape. A motor (20) corresponding to the position of the rotating rod (21) is fixedly installed on the bottom surface of the secondary separation box (7) to drive the movement and adjustment of the two baffle plates (23). A trough is opened through the bottom surface of the secondary separation box (7) near the water sludge storage box (15). It is V-shaped during the secondary separation of sludge and inverted V-shaped when the sludge is discharged.

10. A continuous separation and reduction treatment system for sludge from tetrahydrofuran production circulating water according to claim 9, characterized in that, A sludge guide frame (19) is provided above the sludge storage tank (15). The sludge guide frame (19) is movably attached to the inside of the main frame (1) and located below the secondary separation tank (7). An electric telescopic rod (17) is fixedly installed on one side of the sedimentation tank (8). A connecting block (18) is fixedly installed on the bottom surface of the sludge guide frame (19). The output end of the connecting block (18) is connected to one side of the connecting block (18).

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