A filter device for hydrogen peroxide fluidized bed hydrogenation reaction

Abstract

This application provides a filtration device for a fluidized bed hydrogenation reaction of hydrogen peroxide, belonging to the field of production equipment technology. It includes a housing, several limiting rods, and plug-in components. The housing includes a feeding section, a filtration section, and a slag discharge section. First connecting plates are provided at both ends of the filtration section, and second connecting plates are provided at the bottom of the feeding section and the top of the slag discharge section. Several limiting rods are connected to the second connecting plates. The first connecting plates have arc-shaped grooves and slots, and the protruding ends of the limiting rods are connected to stop components. When the second connecting plates are rotated to their positions, the stop components can contact the end of the first connecting plates and are offset from the slots. When the second connecting plates are rotated to their positions, the plug-in components engage with the first and second connecting plates to circumferentially limit the second connecting plates. The disassembly and assembly method described in this application eliminates the need to remove all bolts; simply rotating the second connecting plates by a preset angle allows the feeding section to be removed, reducing disassembly and assembly time and improving efficiency.

Description

Technical Field

[0001] This application belongs to the technical field of hydrogen peroxide production equipment, specifically relating to a filtration device for hydrogen peroxide fluidized bed hydrogenation reaction. Background Technology

[0002] Hydrogen peroxide is an inorganic compound that can be used to produce inorganic and organic peroxides. In the current technology, most hydrogen peroxide production adopts fixed-bed production technology, using palladium-supported catalysts as catalysts and heavy aromatics and anthraquinones as working fluids. Hydrogen peroxide solution is obtained through hydrogenation, oxidation, extraction and purification.

[0003] In the fluidized bed hydrogenation reaction of hydrogen peroxide, the reaction liquid is filtered through a cross-flow filter. The filtered clear liquid is discharged from the clear liquid outlet of the cross-flow filter, while the catalyst is discharged into the reactor from the concentrated slurry outlet. After a certain period of filtration, the cross-flow filter is backwashed to remove the filter cake adhering to the inner wall of the filter element.

[0004] Existing cross-flow filters include a feeding section, a filtering section, and a slag discharge section. The top of the filtering section is connected to the feeding section via a flange, and the bottom of the filtering section is connected to the slag discharge section via a flange. When replacing the filter element in the filtering section, all the bolts between the filtering section and the feeding section need to be unscrewed before the filter element in the filtering section can be replaced, resulting in low disassembly and assembly efficiency. Utility Model Content

[0005] This application provides a filtration device for hydrogen peroxide fluidized bed hydrogenation reaction, aiming to solve the problem of low disassembly and assembly efficiency between the feed section and the filtration section of the cross-flow filter in the prior art.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A filtration device for a hydrogen peroxide fluidized bed hydrogenation reaction is provided, comprising: The shell includes a feeding section, a filtering section and a slag discharge section. The two ends of the filtering section are respectively provided with a first connecting plate, and the bottom end of the feeding section and the top end of the slag discharge section are respectively provided with a second connecting plate. Several limiting rods are connected to the second connecting plate; the free end of each limiting rod is connected to a stop component; the first connecting plate has an arc-shaped groove for the limiting rods to pass through, and one end of the arc-shaped groove has a slot for the stop component to pass through; when the second connecting plate is rotated into position, the stop component can contact the end of the first connecting plate and be misaligned with the slot. The feeding section is connected to the hydrogenation reactor and a one-way valve is provided at the outlet of the hydrogenation reactor. The slag discharge section is connected to the inlet of the Venturi mixer and a one-way valve is provided on the connecting pipeline. The outlet of the Venturi mixer is connected to the hydrogenation reactor. The circulating working fluid flows through the Venturi mixer into the hydrogenation reactor. The concentrated slurry in the slag discharge section is mixed with the circulating working fluid in the Venturi mixer and enters the hydrogenation reactor together with the circulating working fluid.

[0007] In one possible implementation, the filter device further includes a plug-in component connected to the second connecting plate; the second connecting plate and the first connecting plate are provided with through holes that can be aligned with each other; when the second connecting plate is rotated into position, the plug-in component engages with the first connecting plate and the second connecting plate to circumferentially limit the second connecting plate.

[0008] In one possible implementation, the plug-in component has a U-shaped structure, and a first positioning element and a second positioning element are fixedly provided on both vertical sections of the plug-in component. The first positioning element and the second positioning element are respectively located on both sides of the second connecting plate. The second connecting plate has a groove at one end facing the first connecting plate for accommodating a second positioning member, which can be inserted into a through hole on the first connecting plate.

[0009] In one possible implementation, the first connecting plate has an inclined surface at the end of the limiting rod protruding from it. When the second connecting plate rotates, the stop component can slide along the inclined surface to axially press the first connecting plate and the second connecting plate together.

[0010] In one possible implementation, the inclined surface is provided on the mounting plate, the mounting plate is fixed to the first connecting plate by bolts, and the inclined surface of the mounting plate has countersunk holes, with the bolt nuts located in the countersunk holes.

[0011] In one possible implementation, a pin is fixedly provided on the mounting plate, and the first connecting plate has a pin hole that engages with the pin to position the mounting plate.

[0012] In one possible implementation, when the stop member passes through the first connecting plate, the stop member is located at the lower end of the inclined plane; after the second connecting plate is rotated into place, the stop member is located at the upper end of the inclined plane. A baffle is connected to the high end of the inclined surface. The baffle can contact the stop component to limit the rotation position of the stop component, so that the through hole on the second connecting plate is aligned with the through hole on the first connecting plate.

[0013] In one possible implementation, the baffle is provided with a threaded hole, and a connecting bolt is provided at the location of the threaded hole of the baffle. The connecting bolt is used to push the stop component so that the stop component moves to the lower end of the inclined surface.

[0014] In one possible implementation, the filter section is provided with a sealing plate and a tubular filter element. There are two sealing plates, which are located at both ends of the filter section. Several sleeves are fixed at opposite positions of the two sealing plates. The end of the tubular filter element is inserted into the sleeve. The sealing plate has a through hole with a diameter equal to that of the inner circumferential wall of the tubular filter element.

[0015] In one possible implementation, both the feeding section and the slag discharge section are provided with steps for abutting the sealing plates to axially limit the position of the two sealing plates.

[0016] This application provides a filtration device for a fluidized bed hydrogenation reaction of hydrogen peroxide. Compared with the prior art, when the filter element in the filtration section needs to be replaced, the second connecting plate is rotated, causing the stop component to rotate from a misaligned position to a position aligned with the slot. At this time, the feed section can be removed from the filtration section, facilitating the replacement of the filter element in the filtration section. Compared with the flange connection method in the prior art, the above-mentioned disassembly and assembly method of this application does not require the removal of all bolts. Only the second connecting plate needs to be rotated by a preset angle to remove the feed section, reducing disassembly and assembly time and improving disassembly and assembly efficiency. By connecting the filtration device of this application with the hydrogenation reactor and the Venturi mixer, a negative pressure is generated at the connection position between the Venturi mixer and the slag discharge section during the process of the circulating working fluid entering the hydrogenation reactor through the Venturi mixer. This facilitates the entry of the concentrated slurry in the slag discharge section into the Venturi mixer, where it mixes with the circulating working fluid and then enters the hydrogenation reactor together. Through the above settings, compared with the dead-end filtration method, this application can make the catalyst circulate in the hydrogenation reactor and the filter, improving the utilization rate of the catalyst. Attached Figure Description

[0017] Figure 1 A schematic diagram of a filtration device for a fluidized bed hydrogenation reaction of hydrogen peroxide provided in an embodiment of this application; Figure 2 A cross-sectional view of a filtration device for a hydrogen peroxide fluidized bed hydrogenation reaction provided in an embodiment of this application; Figure 3 for Figure 2 Enlarged diagram of section A in the middle; Figure 4 A schematic diagram of the first and second connecting disc portions of a filtration device for a fluidized bed hydrogenation reaction of hydrogen peroxide, provided in an embodiment of this application; Figure 5 for Figure 4Enlarged diagram of section B; Figure 6 A schematic diagram of the arc-shaped groove portion of a filtration device for a fluidized bed hydrogenation reaction of hydrogen peroxide provided in an embodiment of this application; Figure 7 A schematic diagram of a plug-in component of a filtration device for a hydrogen peroxide fluidized bed hydrogenation reaction provided in an embodiment of this application; Figure 8 for Figure 7 Enlarged diagram of section C; Figure 9 This is a flow chart of a fluidized bed hydrogenation reaction process.

[0018] Explanation of reference numerals in the attached drawings: 1. Shell; 11. Feeding section; 12. Filtering section; 13. Slag discharge section; 14. Sealing plate; 15. Tubular filter element; 16. Sleeve; 17. Step; 18. Clear liquid outlet; 19. Backflushing liquid connection port; 2. Limiting rod; 21. Stop component; 3. Insertion component; 31. First positioning component; 32. Second positioning component; 4. First connecting plate; 41. Arc groove; 42. Slot; 43. Pin hole; 5. Second connecting plate; 51. Groove; 6. Mounting plate; 61. Inclined surface; 62. Pin; 63. Baffle; 64. Connecting bolt; 7. Hydrogenation reactor; 8. Venturi mixer. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] Please refer to the following: Figures 1 to 9This application describes a filtration device for a fluidized bed hydrogenation reaction of hydrogen peroxide. The filtration device includes a housing 1, several limiting rods 2, and a connecting component 3. The housing 1 includes a feed section 11, a filter section 12, and a slag discharge section 13. First connecting plates 4 are provided at both ends of the filter section 12, and second connecting plates 5 are provided at the bottom end of the feed section 11 and the top end of the slag discharge section 13. Several limiting rods 2 are connected to the second connecting plates 5. The first connecting plates 4 have arc-shaped grooves 41 for the limiting rods 2 to pass through, and a stop component 21 is connected to the protruding end of the limiting rods 2. The first connecting plates 4 have slots 42 for the stop component 21 to pass through. When the second connecting plates 5 are rotated into position, the stop component 21 can contact the end of the first connecting plates 4 and is offset from the slot 42. The connecting component 3 is connected to the second connecting plates 5. The second connecting plates 5 and the first connecting plates 4 are provided with mutually alignable... Through hole; when the second connecting plate 5 is rotated into position, the plug-in component 3 is plugged into and engaged with the first connecting plate 4 and the second connecting plate 5 to circumferentially limit the second connecting plate 5; wherein, the feed section 11 is used to communicate with the hydrogenation reactor 7, and a one-way valve is provided at the outlet of the hydrogenation reactor 7, the flow direction of the one-way valve is from the hydrogenation reactor 7 to the feed section 11; the slag discharge section 13 is used to connect with the inlet of the Venturi mixer 8, and a one-way valve is provided on the connecting pipeline, the flow direction of the one-way valve is from the slag discharge section 13 to the Venturi mixer 8; the inlet of the Venturi mixer 8 is located on the side of the Venturi mixer 8; the outlet of the Venturi mixer 8 is connected to the hydrogenation reactor 7; the circulating working fluid flows through the Venturi mixer 8 into the hydrogenation reactor 7, and the concentrated slurry of the slag discharge section 13 is mixed with the circulating working fluid in the Venturi mixer 8 and enters the hydrogenation reactor 7 together with the circulating working fluid.

[0021] This application provides a filtration device for a fluidized bed hydrogenation reaction of hydrogen peroxide. Compared with the prior art, when the filter element in the filtration section 12 needs to be replaced, the insertion part 3 is lifted upwards, and then the second connecting plate 5 is rotated so that the stop part 21 is rotated from the misaligned position to the position aligned with the slot 42. At this time, the feed section 11 can be removed from the filtration section 12, which facilitates the replacement of the filter element in the filtration section 12. Compared with the flange connection method in the prior art, the above-mentioned disassembly and assembly method of this application does not require the removal of all bolts. It is only necessary to rotate the second connecting plate 5 by a preset angle to remove the feed section 11. 11. Removing the filter reduces disassembly and assembly time and improves efficiency. The filter device described in this application is connected to the hydrogenation reactor 7 and the Venturi mixer 8. During the process of the circulating working fluid entering the hydrogenation reactor 7 via the Venturi mixer 8, a negative pressure is generated at the connection point between the Venturi mixer 8 and the slag discharge section 13. This facilitates the entry of the concentrated slurry in the slag discharge section 13 into the Venturi mixer 8, where it mixes with the circulating working fluid before entering the hydrogenation reactor 7 together. Through the above setup, compared to dead-end filtration, this application enables the catalyst to circulate within the hydrogenation reactor 7 and the filter, improving catalyst utilization.

[0022] The liquid feed flows from the hydrogenation reactor 7 to the filter, and during the concentration process in the filter, the concentrate containing the catalyst does not stay in the filter for too long. It directly enters the Venturi mixer 8 from the bottom of the filter and finally mixes with the circulating working fluid before returning to the hydrogenation reactor 1.

[0023] Meanwhile, by using the filter and filtration method described in this invention, the filter element and filter surface can be effectively rinsed and regenerated by relying on the flow rate of the circulating material, ensuring long-term stable operation of the filter.

[0024] Taking the second connecting plate 5 on the feeding section 11 as an example, several limiting rods 2 are spaced apart around the bottom of the second connecting plate 5. In this embodiment, four limiting rods 2 are used as an example. The arc-shaped groove 41 on the first connecting plate 4 is correspondingly set with the limiting rods 2. After the limiting rod 2 is inserted into the arc-shaped groove 41, the stop component 21 on the limiting rod 2 passes through the slot 42 and through the first connecting plate 4. When the second connecting plate 5 is rotated, the stop component 21 can rotate to a position that is offset from the slot 42, which can limit the first connecting plate 4 and the second connecting plate 5 in the axial direction and prevent the second connecting plate 5 from separating from the first connecting plate 4. After the stop component 21 is rotated into place, the insertion component 3 is inserted and engaged with the first connecting plate 4 and the second connecting plate 5. The top of the stop component 21 contacts the bottom of the second connecting plate 5 to play a role in height limitation.

[0025] In some embodiments, such as Figures 1 to 8As shown, the plug-in component 3 has a U-shaped structure. A first positioning member 31 and a second positioning member 32 are fixedly provided on both vertical sections of the plug-in component 3. The first positioning member 31 and the second positioning member 32 are located on both sides of the second connecting plate 5, respectively. The end of the second connecting plate 5 facing the first connecting plate 4 has a groove 51 for accommodating the second positioning member 32. The second positioning member 32 can be plugged into the through hole on the first connecting plate 4.

[0026] Taking the second connecting plate 5 on the feeding section 11 as an example, the top of the plug-in component 3 is located above the second connecting plate 5, making it easy for the operator to grasp the plug-in component 3; there are two plug-in components 3 spaced apart along the circumference of the second connecting plate 5, making it easy for the operator to grasp the plug-in component 3 and rotate the second connecting plate 5.

[0027] The first positioning member 31 is located above the second connecting plate 5, and the second positioning member 32 is located below the second connecting plate 5; the diameter of the first positioning member 31 and the diameter of the second positioning member 32 are both greater than the diameter of the vertical section of the plug-in member 3; the depth of the groove 51 at the bottom of the second connecting plate 5 is greater than the length of the second positioning member 32, so as to ensure that the second positioning member 32 can be completely located inside the second connecting plate 5.

[0028] When the through holes on the first connecting plate 4 and the second connecting plate 5 are aligned, pressing down on the insertion component 3 allows the second positioning component 32 to engage with the first connecting plate 4, providing circumferential positioning for both the first and second connecting plates 4 and 5. The engagement of the insertion component 3 with the limiting rod 2 and the stop component 21 secures the second connecting plate 5 to the first connecting plate 4. When the first positioning component 31 contacts the top of the second connecting plate 5, this is the final insertion position, reducing the risk of the operator's fingers being pressed against the second connecting plate 5.

[0029] In some embodiments, such as Figures 1 to 8 As shown, the first connecting plate 4 has an inclined surface 61 at the end of the limiting rod 2. When the second connecting plate 5 rotates, the stop component 21 can slide along the inclined surface 61 to axially press the first connecting plate 4 and the second connecting plate 5. The inclined surface 61 is set on the mounting plate 6. The mounting plate 6 is fixed to the first connecting plate 4 by bolts. The inclined surface 61 of the mounting plate 6 has a countersunk hole, and the nut of the bolt is located in the countersunk hole.

[0030] Taking the second connecting plate 5 on the feeding section 11 as an example, an mounting plate 6 is set at the bottom of the second connecting plate 5 at the position of the arc groove 41, with the inclined surface 61 on the mounting plate 6 facing downwards; after the stop component 21 passes through the first connecting plate 4, the stop component 21 is located at the bottom end of the inclined surface 61; when the stop component 21 rotates with the second connecting plate 5, the limiting rod 2 slides in the arc groove 41, and the rotation axis of the arc groove 41 is the same as the rotation axis of the second connecting plate 5; when the stop component 21 rotates to its position, the stop component 21 abuts against the inclined surface 61, so that the first connecting plate 4 and the second connecting plate 5 are tightly fitted in the height direction; then, the insertion component 3 is inserted and fitted with the first connecting plate 4 and the second connecting plate 5, which can circumferentially limit the first connecting plate 4 and the second connecting plate 5.

[0031] With the above-described configuration of this application, after the first connecting plate 4 and the second connecting plate 5 are pressed in the height direction, the first connecting plate 4 and the second connecting plate 5 are circumferentially limited by the plug-in component 3, so that the feeding section 11 can be fixed on the filtering section 12.

[0032] In some embodiments, such as Figures 1 to 8 As shown, a pin 62 is fixedly provided on the mounting plate 6, and the first connecting plate 4 has a pin hole 43 that engages with the pin 62 to position the mounting plate 6.

[0033] It should be noted that by setting a pin 62 on the mounting plate 6 and engaging the pin 62 with the pin hole 43 on the first connecting plate 4, the position of the mounting plate 6 can be initially limited; after the bolt is threaded into the first connecting plate 4, the mounting plate 6 can be fixed on the first connecting plate 4.

[0034] For example, the pin 62 has a square structure, and the pin hole 43 on the first connecting plate 4 also has a square structure, with the outer peripheral wall of the pin 62 in contact with the inner peripheral wall of the pin hole 43.

[0035] In some embodiments, such as Figures 1 to 8 As shown, when the stop component 21 passes through the first connecting plate 4, the stop component 21 is located at the lower end of the inclined surface 61; after the second connecting plate 5 rotates into place, the stop component 21 is located at the upper end of the inclined surface 61; a baffle 63 is connected to the upper end of the inclined surface 61, and the baffle 63 can contact the stop component 21 to limit the rotation position of the stop component 21, so that the through hole on the second connecting plate 5 is aligned with the through hole on the first connecting plate 4; the baffle 63 is provided with a threaded hole, and a connecting bolt 64 is provided at the position of the threaded hole of the baffle 63. The connecting bolt 64 is used to push the stop component 21 so that the stop component 21 moves to the lower end of the inclined surface 61.

[0036] It should be noted that by setting a baffle 63 at the high end of the mounting plate 6, the rotational position of the stop component 21 can be limited. When the operator pulls the plug-in component 3 upward to separate it from the first connecting plate 4, and it is difficult to rotate the second connecting plate 5 by gripping the plug-in component 3, another operator can first use a tool to tighten the connecting bolt 64, so that the threaded end of the connecting bolt 64 pushes against the stop component 21. After the stop component 21 is disengaged from the inclined surface 61, it will be easier for the operator to rotate the second connecting plate 5 by the plug-in component 3. When the connecting bolt 64 is tightened with a tool, the plug-in component 3 is always in a state of being separated from the first connecting plate 4, so that the threaded end of the connecting bolt 64 can push against the stop component 21.

[0037] In some embodiments, such as Figures 1 to 8 As shown, the filter section 12 is provided with a sealing plate 14 and a tubular filter element 15. There are two sealing plates 14, which are located at both ends of the filter section 12. Several sleeves 16 are fixed at opposite positions of the two sealing plates 14. The end of the tubular filter element 15 is inserted into the sleeve 16. The sealing plate 14 has a through hole with the same diameter as the inner circumferential wall of the tubular filter element 15. The feed section 11 and the slag discharge section 13 are provided with steps 17 for abutting the sealing plates 14 to axially limit the position of the two sealing plates 14. The outer circumferential wall of the filter section 12 is provided with a clear liquid outlet 18 and a backflushing liquid connection port 19.

[0038] It should be noted that a step 17 is formed between the feeding section 11 and the slag discharge section 13 and the filtration section 12. The feeding section 11 and the slag discharge section 13 can abut against the sealing plate 14 at the corresponding position, so that the tubular filter element 15 is stably fixed inside the filtration section 12. The diameter of the through hole on the sealing plate 14 is the same as the inner diameter of the tubular filter element 15, and the diameter of the through hole on the sealing plate 14 is smaller than the outer diameter of the tubular filter element 15, so as to prevent the tubular filter element 15 from passing through the sealing plate 14.

[0039] In some embodiments, such as Figures 1 to 8 As shown, each tubular filter element 15 has connecting sections at both ends, and the filtration section is located between the two connecting sections; the connecting sections of the tubular filter element 15 are inserted into the sleeve 16 of the sealing plate 14.

[0040] By providing connecting sections at both ends of the tubular filter element 15, the connecting sections can be inserted into the sleeve 16 on the sealing plate 14, which facilitates fixing the position of several tubular filter elements 15.

[0041] like Figure 9As shown, the hydrogenation reactor 7 is connected to a filter via a pipeline. Multiple filters are connected in parallel. The outlet of the filter is connected to the side of a Venturi mixer 8, and the inlet of the Venturi mixer 8 is connected to a circulating working fluid pipeline. After the circulating working fluid flows through the Venturi mixer 8, a negative pressure is generated at the connection point between the Venturi mixer 8 and the filter. By using the Venturi mixer 8, the velocity of the hydrogenation reaction liquid on the filter element surface can be increased, improving the scouring effect on the filter element surface. This reduces the filtration pressure difference, slows down the fouling rate of the filter element, and improves the filtration effect and extends the service life of the filter element.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A filter device for hydrogen peroxide fluidized bed hydrogenation reaction, characterized by, include: The shell includes a feeding section, a filtering section and a slag discharge section. The two ends of the filtering section are respectively provided with a first connecting plate, and the bottom end of the feeding section and the top end of the slag discharge section are respectively provided with a second connecting plate. Several limiting rods are connected to the second connecting plate; the free end of each limiting rod is connected to a stop component; the first connecting plate has an arc-shaped groove for the limiting rods to pass through, and one end of the arc-shaped groove has a slot for the stop component to pass through; when the second connecting plate is rotated into position, the stop component can contact the end of the first connecting plate and be misaligned with the slot. The feeding section is connected to the hydrogenation reactor and a one-way valve is provided at the outlet of the hydrogenation reactor. The slag discharge section is connected to the inlet of the Venturi mixer and a one-way valve is provided on the connecting pipeline. The outlet of the Venturi mixer is connected to the hydrogenation reactor. The circulating working fluid flows through the Venturi mixer into the hydrogenation reactor. The concentrated slurry in the slag discharge section is mixed with the circulating working fluid in the Venturi mixer and enters the hydrogenation reactor together with the circulating working fluid.

2. The filtering device for hydrogen peroxide fluidized bed hydrogenation reaction according to claim 1, wherein, The filter device also includes a plug-in component connected to the second connecting plate; the second connecting plate and the first connecting plate are provided with through holes that can be aligned with each other; when the second connecting plate is rotated into position, the plug-in component is plugged into the first connecting plate and the second connecting plate to circumferentially limit the second connecting plate.

3. A filter device for hydrogen peroxide fluidized bed hydrogenation reaction according to claim 2, wherein The plug-in component has a U-shaped structure, and a first positioning component and a second positioning component are fixedly provided on both vertical sections of the plug-in component. The first positioning component and the second positioning component are respectively located on both sides of the second connecting plate. The second connecting plate has a groove at one end facing the first connecting plate for accommodating a second positioning member, which can be inserted into a through hole on the first connecting plate.

4. The filter apparatus for hydrogen peroxide fluidized bed hydrogenation reaction according to claim 2, wherein The first connecting plate has an inclined surface at the end where the limiting rod protrudes. When the second connecting plate rotates, the stop component can slide along the inclined surface to axially press the first connecting plate and the second connecting plate.

5. A filter apparatus for use in a fluidized bed hydrogenation reaction of hydrogen peroxide as defined in claim 4, wherein The inclined surface is set on the mounting plate, and the mounting plate is fixed to the first connecting plate by bolts. The inclined surface of the mounting plate has countersunk holes, and the bolt nuts are located in the countersunk holes.

6. A filter apparatus for use in a fluidized bed hydrogenation reaction of hydrogen peroxide as defined in claim 5, wherein The mounting plate is fixedly provided with a pin, and the first connecting plate has a pin hole that engages with the pin to position the mounting plate.

7. A filter apparatus for use in a fluidized bed hydrogenation reaction of hydrogen peroxide as defined in claim 4, wherein When the stop component passes through the first connecting plate, the stop component is located at the lower end of the inclined plane; after the second connecting plate is rotated into place, the stop component is located at the upper end of the inclined plane. A baffle is connected to the high end of the inclined surface. The baffle can contact the stop component to limit the rotation position of the stop component, so that the through hole on the second connecting plate is aligned with the through hole on the first connecting plate.

8. A filter device for hydrogen peroxide fluidized bed hydrogenation reaction according to claim 7, wherein The baffle is provided with a threaded hole, and a connecting bolt is provided at the position of the threaded hole of the baffle. The connecting bolt is used to push the stop component so that the stop component moves to the lower end of the inclined surface.

9. A filter apparatus for use in a fluidized bed hydrogenation reaction of hydrogen peroxide as defined in claim 2, wherein The filter section is provided with a sealing plate and a tubular filter element. There are two sealing plates, which are located at both ends of the filter section. Several sleeves are fixed at the opposite positions of the two sealing plates. The end of the tubular filter element is inserted into the sleeve. The sealing plate has a through hole with the same diameter as the inner circumferential wall of the tubular filter element.

10. A filtration device for a fluidized bed hydrogenation reaction of hydrogen peroxide as described in claim 9, characterized in that, Both the feeding section and the slag discharge section are provided with steps for abutting the sealing plates to axially limit the position of the two sealing plates.

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