A recovery and filtration device for a nickel-containing catalyst

Abstract

The present invention relates to the technical field of catalyst separation equipment, and specifically discloses a recovery and filtration device for nickel-containing catalysts, which includes a tank body, a filter and a cleaning mechanism. The tank body is provided with a feed port, a discharge port and a discharge port. The filter includes a suction pipe and a cylindrical filter cloth, and the filter cloth is connected inside the tank body. One end of the suction pipe communicates with the inside of the filter cloth, and the other end extends out of the tank body. The cleaning mechanism is used to clean the filter cloth; the cleaning mechanism includes a cleaning pipe and a plurality of water spraying units. The water spraying units are provided with water spraying holes, and the water spraying units are located inside the filter cloth, and the water spraying holes face the filter cloth. The cleaning pipe is communicated with the water spraying holes of each water spraying unit. The cleaning mechanism further includes an adjusting component for controlling the movement of the connecting frame. The connecting frame is slidably connected to the support skeleton, and the sliding direction is the axial direction of the tank body. After the filtration is completed in the present invention, the cleaning mechanism sprays water on the filter cloth from the inside of the filter cloth, so that the solid particles attached to the filter cloth can fall off smoothly for collection.

Description

Technical Field

[0001] The present invention relates to the technical field of catalyst separation equipment, and particularly relates to a recovery and filtration device for nickel-containing catalysts. Background Art

[0002] Nickel is an important component of the catalyst required for the hydrogenation reaction of sugar alcohols. It is a heavy metal. During the production process, solid nickel particles must be separated after hydrogenation.

[0003] The problem of recycling the catalyst during the production process of the xylitol hydrogenation system is an urgent problem faced by the industry. The Chinese patent document with the publication number CN219023449U discloses a nickel catalyst collection device in sugar alcohol processing, including a tank body. A filter is arranged inside the tank body. The filter includes a cylindrical filter cloth supported by a framework and sealing structures respectively arranged at the top and bottom of the filter cloth, so that the fluid in the tank body can only enter the internal space of the filter through the filter cloth. The internal space of the filter is connected to the outside through a drain pipe; a feed pipe is arranged at the bottom in the vertical direction of the tank body, and the feed pipe is connected to the material source. The material entering the tank body through the feed pipe enters the internal space of the filter through the filter cloth. Granular materials such as catalysts in the material remain outside the filter cloth, and the water liquid in the material enters the internal space of the filter and is discharged through the drain pipe. A plurality of spray heads facing the bottom in the vertical direction of the filter cloth are arranged around the top of the filter cloth. The plurality of spray heads are connected to each other through a cleaning pipe, and the cleaning pipe is connected to the process water source. The spray heads are mainly used to clean the catalyst adhered to the filter cloth after the filtered catalyst in the tank body is discharged from the discharge port.

[0004] The spray heads of the cleaning pipe are located outside the filter cloth. After the material passes through the filter for filtration, when the cleaning pipe cleans the filter cloth, the water sprayed by the spray heads contacts and flushes the outside of the filter cloth. The acting force of the water on the filter cloth is from the outside to the inside. The catalyst particles on the surface of the filter cloth also receive the acting force from the outside to the inside of the filter cloth. Thus, the problem that some catalyst particles attached to the filter cloth are more difficult to detach from the filter cloth is caused. Summary of the Invention

[0005] The present invention provides a recovery and filtration device for nickel-containing catalysts, aiming to solve the problem that some catalyst particles on the filter cloth are not easily detached when flushing the filter cloth in the related art.

[0006] A nickel-containing catalyst recovery and filtration device of the present invention includes a tank body, a filter and a cleaning mechanism. The tank body is provided with a feed port, a discharge port and a discharge port. The filter includes a support skeleton, a suction pipe and a cylindrical filter cloth. The filter cloth is connected inside the tank body through the support skeleton. One end of the suction pipe communicates with the inside of the filter cloth, and the other end extends out of the tank body. The cleaning mechanism is used to clean the filter cloth. The cleaning mechanism includes a cleaning pipe and a plurality of water spraying units. The water spraying units are provided with water spraying holes. The water spraying units are located inside the filter cloth, and the water spraying holes face the filter cloth. The cleaning pipe communicates with the water spraying holes of each water spraying unit. The filter cloth and the tank body are coaxial. The cleaning mechanism further includes a connecting frame and an adjusting assembly. The connecting frame is used to relatively connect the cleaning pipe and the water spraying units. The connecting frame is slidably connected to the support skeleton in the axial direction of the tank body. The adjusting assembly is used to control the movement of the connecting frame.

[0007] The effect is as follows: The solid-liquid mixed material after the hydrogenation reaction enters the tank body through the feed port. The filter sucks the mixture through the suction pipe. The solid-liquid mixture moves across the filter cloth, and the solid nickel particles therein are intercepted by the filter cloth. Most of the solid particles adhere to the outer side of the cylindrical filter cloth. After the filtration is completed, the cleaning mechanism is started. The water spraying units spray clean water onto the filter cloth through the water spraying holes. The flow direction of the water is from the inside of the filter cloth through the filter cloth to the outside of the filter cloth, that is, the acting force of the water on the solid particles attached to the filter cloth is also from the inside of the filter cloth to the outside of the filter cloth, which is beneficial to making the solid particles break away from the filter cloth, and the cleaning effect of the filter cloth is higher. The adjusting assembly enables the water spraying units to move axially along the filter cloth in the filter cloth, that is, the water spraying position points of the water spraying units on the filter cloth are adjustable, thereby improving the overall cleaning effect of each part of the filter cloth.

[0008] Preferably, the connecting frame includes a fixing ring and an installation ring. The fixing ring and the cleaning pipe are relatively fixed. The adjusting assembly is used to control the movement of the fixing ring and the cleaning pipe. The installation ring is rotatably connected to the fixing ring coaxially. The water spraying units are connected to the installation ring. The plurality of water spraying units are arranged in a circumferential array around the installation ring. The installation ring and the filter cloth are coaxial.

[0009] The effect is as follows: The installation ring can drive each water spraying unit to rotate, improving the coverage rate of the water spraying holes along the circumference of the filter cloth, thereby improving the overall cleaning effect of the filter cloth.

[0010] Preferably, the water spraying units are slidably connected to the installation ring in the radial direction of the installation ring. A connecting spring is connected between the water spraying units and the installation ring. The telescopic direction of the connecting spring is parallel to the sliding direction of the water spraying units. In the natural state, there is a gap between the water spraying units and the inner side surface of the filter cloth.

[0011] Preferably, the water spray unit includes a driving piston and a contact body, the contact body is fixedly connected to one end of the driving piston, a first inner cavity is opened in the mounting ring, the driving piston is located in the first inner cavity, the contact body is located on the side of the mounting ring facing the filter cloth, and a driving channel for the driving piston to coaxially pass through is opened on the cavity wall of the first inner cavity, and the port of the driving channel is connected to the first inner cavity.

[0012] The effect is that during the material filtering process, water does not flow through the cleaning pipe and the first inner cavity, and the water spray unit is in a state where the contact body does not contact the filter cloth. During cleaning, water flows into the first inner cavity through the cleaning pipe. Under the action of water pressure, the driving piston is thrust, and the water spray unit moves closer to the filter cloth. The orifice of the water spray hole is closer to the filter cloth, and the cleaning effect will be higher.

[0013] Preferably, the side of the contact body facing the filter cloth is an arc surface, and a plurality of water outlet ports of the water spray hole are provided and distributed on the arc surface of the side of the contact body facing the filter cloth.

[0014] The effect is that the contact body and the filter cloth have a greater probability of contacting each other, and when the curved contact body and the filter cloth surface come into contact and move relatively, the friction between the two is small, which plays a role in structural protection of the filter cloth.

[0015] Preferably, a locking rod is fixedly connected to one end of the driving piston away from the contact body, the diameter of the locking rod is smaller than the diameter of the driving piston, a locking cylinder is fixedly connected to the inner wall of the first inner cavity, the locking cylinder is coaxially sleeved outside the locking rod, the water spray hole passes through the contact body, the driving piston and the locking rod, the water inlet port of the water spray hole is located on the locking rod, and in a natural state, the water inlet port of the water spray hole is located in the locking cylinder.

[0016] The effect is that when the water inlet port of the water spray hole is located in the locking cylinder, the water spray hole is not connected to the first inner cavity, and the external liquid cannot flow back into the first inner cavity through the water spray hole. When filtering the solid-liquid mixture, the liquid cannot be poured into the first inner cavity through the water spray hole.

[0017] Preferably, the inner edge of the fixed ring is fixedly connected with a plurality of vibration bumps, and the plurality of vibration bumps are arranged in a circumferential array along the fixed ring. The end of the locking rod away from the contact body is located on the side of the mounting ring facing the central axis column and is fixedly connected with a vibration plate, and abutment balls are embedded in the vibration plate. When the water spray unit contacts the filter cloth, the abutment balls and the inner edge of the fixed ring or the vibration bump are in rolling contact.

[0018] The effect is that during the rotation of the mounting ring, the abutting balls pass through each vibration ridge in turn and collide, and the collision causes the water spray unit to vibrate. Since the contact body and the filter cloth maintain contact at this time, the vibration of the water spray unit also directly affects the stability of the filter cloth, and the particles attached to the filter cloth are easier to fall off.

[0019] Preferably, a second inner cavity is opened in the fixed ring, and the second inner cavity is connected to the cleaning pipe. A plurality of power tubes are fixedly connected in the fixed ring. The plurality of power tubes are fixedly connected to the cavity wall of the second inner cavity close to the mounting ring. Along the circumference of the fixed ring, all the power tubes are inclined in the same direction. The pipe mouths of the power tubes are located on the side of the fixed ring facing the mounting ring. A water-passing notch connected to the first inner cavity is opened on the side of the mounting ring facing the fixed ring. A power baffle is fixedly connected to the cavity wall of the first inner cavity and located at the water-passing notch. The plate surface of the power baffle forms an angle with the axis of the power tube.

[0020] The effect is that the water sprayed out through the power tube enters the first inner cavity and forms a thrust on the power partition, so that the mounting ring obtains rotational power, and the water flow entering the first inner cavity enters the water spray hole and is finally sprayed out from the contact body, thereby forming a stable water flow in the first inner cavity, and the mounting ring can carry each water spray unit to rotate continuously.

[0021] Preferably, the supporting skeleton comprises a fixed plate, a central axis column and a supporting plate, the fixed plate is fixedly connected to the inner wall of the tank body, the central axis column is fixedly connected to the fixed plate and is coaxial with the tank body, the support plate and the central axis column are coaxially fixedly connected, the fixed plate is located between the feed port and the discharge port, the filter cloth is fixedly connected to the side of the fixed plate facing the feed port, the support plate and the inner end wall of the filter cloth abut against each other, a filter channel is provided on the central axis column, one port of the filter channel is located on the inner side of the filter cloth, and the other port is located on the side of the fixed plate away from the filter cloth and is connected to a suction pipe.

[0022] Preferably, the adjustment assembly includes an adjustment frame, an adjustment block, an adjustment fixed pulley and an adjustment rope. The adjustment frame is fixedly connected to the tank body, the adjustment fixed pulley is rotatably arranged on the adjustment frame, the adjustment block is slidably connected to the adjustment frame, and the sliding direction is parallel to the axial direction of the tank body. The adjustment rope passes around the adjustment fixed pulley, the adjustment block and the adjustment rope are fixedly connected, and the cleaning pipe and the adjustment block are fixedly connected.

[0023] The effect is that when the fixed pulley is adjusted to rotate, the adjusting rope moves, and the adjusting block drives the cleaning pipe to slide, thereby realizing the movement control of the cleaning pipe.

[0024] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0025] The present invention arranges the cleaning mechanism on the inner side of the filter cloth. During cleaning, the water spray unit sprays water to various places of the filter cloth. Solid particles attached to the filter cloth are more easily separated from the filter cloth under the action of the water flow and the vibration of the filter cloth, thereby improving the cleaning effect of the filter cloth and the collection effect of the solid particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic cross-sectional view of the overall structure of the nickel-containing catalyst recovery and filtration device in the first embodiment of the present invention.

[0027] Figure 2 It is a schematic top cross-sectional view of the structure of the filter in the first embodiment of the present invention.

[0028] Figure 3 It is a schematic diagram showing the positional relationship of the relay pipe, fixed ring, mounting ring and water spraying unit in the first embodiment of the present invention.

[0029] Figure 4 It is a schematic cross-sectional view of the structure of the water spraying unit when the cleaning pipe is not filled with water in the first embodiment of the present invention.

[0030] Figure 5 It is a schematic cross-sectional view of the communication structure of the first inner cavity and the second inner cavity in the first embodiment of the present invention.

[0031] Figure 6 It is a schematic diagram of the structure of the water spraying unit after the cleaning pipe is filled with water in the first embodiment of the present invention.

[0032] Figure 7 It is a schematic diagram of the structure of the filter joint in the first embodiment of the present invention.

[0033] Reference numerals:

[0034] 1, tank body; 11, feed inlet; 12, discharge outlet; 13, discharge port; 14, filter joint; 141, filter screen; 142, partition block; 2, filter; 21, filter cloth; 22, support skeleton; 221, fixing plate; 222, central axis column; 2221, relief groove; 223, filter channel; 224, support plate; 23, suction pipe; 3, cleaning mechanism; 31, cleaning pipe; 32, connecting frame; 321, connecting ring pipe; 322, relay pipe; 323, fixing ring; 3231, second inner cavity; 3232, power pipe; 324, mounting ring; 3241, first inner cavity; 3242, water passing notch; 3243, power partition; 325, driving channel; 326, locking cylinder; 33, connecting spring; 34, vibration ridge; 4, water spraying unit; 41, contact body; 42, driving piston; 43, locking rod; 44, water spraying hole; 45, vibration plate; 451, abutting ball; 5, adjusting assembly; 51, adjusting frame; 52, adjusting block; 53, adjusting fixed pulley; 54, adjusting rope. Detailed implementation manners

[0035] The following describes in detail the embodiments of the present invention, and the examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0036] Combine the following Figures 1 to 7 The invention describes a recovery and filtering device for a nickel-containing catalyst.

[0037] This embodiment discloses a recovery and filtration device containing nickel catalyst, such as Figure 1 As shown, it includes a tank body 1, a filter 2 and a cleaning mechanism 3. The tank body 1 is provided with a feed port 11, a discharge port 12 and a discharge port 13. The solid-liquid mixture after the hydrogenation reaction enters the tank body 1 through the feed port 11. After the solid-liquid separation treatment by the filter 2, the solid particles therein are intercepted, and the liquid leaves the tank body 1 through the discharge port 12. The cleaning mechanism 3 uses water to clean the filter 2, and the water and solid residues left in the tank body 1 after cleaning are discharged from the tank body 1 through the discharge port 13.

[0038] like Figure 1 As shown, the filter 2 includes a support frame 22, a suction pipe 23 and a cylindrical filter cloth 21. The support frame 22 is connected to the interior of the tank body 1. The support frame 22 includes a fixed plate 221, a central axis column 222 and a support plate 224. The fixed plate 221 is fixedly connected to the inner wall of the tank body 1, and its plate surface is perpendicular to the axis of the tank body 1. The feed port 11 and the discharge port 12 are located on different sides of the fixed plate 221. In this embodiment, the axis of the tank body 1 is in a vertical direction, the feed port 11 is located below the fixed plate 221, and the discharge port 12 is located above the fixed plate 221. The central axis column 222 is fixedly connected to the fixed plate 221 and is coaxial with the tank body 1. The filter cloth 21 is fixedly connected to the side of the fixed plate 221 facing the feed port 11 and is coaxial with the tank body 1. The support plate 224 is coaxially fixedly connected to the lower end of the central axis column 222. The support plate 224 abuts against the lower inner end wall of the filter cloth 21, that is, the support plate 224 tightens the filter cloth 21 from the inner side of the filter cloth 21 to improve the shape stability of the filter cloth 21. A filter channel 223 is provided on the central axis column 222. One of the ports of the filter channel 223 is located in the filter cloth 21 and close to the support plate 224. The other port is located on the side of the fixed plate 221 away from the filter cloth 21 and is connected to one end of the suction pipe 23. The other end of the suction pipe 23 extends out of the tank body 1 from the discharge port 12 and is connected to a negative pressure pump (not shown in the figure). The liquid entering the inner side of the filter cloth 21 flows into the suction pipe 23 through the filter channel 223 and finally leaves the tank body 1.

[0039] like Figure 1 and Figure 2As shown, the cleaning mechanism 3 includes a cleaning pipe 31, a connecting frame 32, an adjusting assembly 5, and multiple water spraying units 4. The water spraying units 4 are located inside the filter cloth 21. The cleaning pipe 31 is coaxially and slidably connected to the tank body 1, and one end of the cleaning pipe 31 extends into the filter cloth 21, while the other end is located outside the tank body 1 and is connected to a water source. The connecting frame 32 is used to relatively connect the cleaning pipe 31 and the water spraying units 4, and enable the water in the cleaning pipe 31 to reach the water spraying units 4. The adjusting assembly 5 is used to control the movement of the cleaning pipe 31 relative to the tank body 1. The adjusting assembly 5 includes an adjusting frame 51, an adjusting block 52, adjusting fixed pulleys 53, and an adjusting rope 54. The adjusting frame 51 is fixedly connected to the top of the tank body 1. There are two adjusting fixed pulleys 53, both of which are rotatably arranged on the adjusting frame 51. One of the adjusting fixed pulleys 53 is driven by a motor (not shown in the figure) to rotate, and the adjusting rope 54 bypasses both adjusting fixed pulleys 53 at the same time. The adjusting block 52 is slidably connected to the adjusting frame 51, and the sliding direction is parallel to the axial direction of the tank body 1. The adjusting block 52 is fixedly connected to the adjusting rope 54, and the cleaning pipe 31 is fixedly connected to the adjusting block 52. When the adjusting fixed pulley 53 rotates, the adjusting rope 54 moves cyclically, and the adjusting block 52 drives the cleaning pipe 31 to move vertically, thereby realizing the movement control of the cleaning pipe 31.

[0040] As Figure 2 and Figure 3 shown, a relief groove 2221 for the cleaning pipe 31 to pass through coaxially is vertically formed on the central axis column 222. The connecting frame 32 includes an abutting ring pipe 321, a relay pipe 322, a fixing ring 323, and a mounting ring 324. The abutting ring pipe 321 is coaxially sleeved outside the central axis column 222. The lower end of the cleaning pipe 31 passes through the relief groove 2221 horizontally and is fixedly connected to the abutting ring pipe 321. One end of the relay pipe 322 is fixedly connected to the outer edge of the abutting ring pipe 321, and the other end is fixedly connected to the inner edge of the fixing ring 323. There are multiple relay pipes 322 and they are evenly arranged around the circumferential direction of the abutting ring pipe 321. The fixing ring 323 is coaxial with the central axis column 222. A second inner cavity 3231 is formed inside the fixing ring 323. The water flow direction in the cleaning pipe 31 is successively the cleaning pipe 31, the abutting ring pipe 321, the relay pipe 322, and the second inner cavity 3231.

[0041] As Figure 3 , Figure 4 and Figure 5As shown, the mounting ring 324 is coaxially and rotatably connected above the fixed ring 323. A plurality of water spraying units 4 are arranged in a circumferential array around the mounting ring 324. The water spraying units 4 are slidably connected to the mounting ring 324, and the sliding direction is the radial direction of the mounting ring 324. A plurality of power pipes 3232 are fixedly connected inside the fixed ring 323. One end port of the power pipe 3232 is located in the second inner cavity 3231, and the other end port is located on the side of the fixed ring 323 facing the mounting ring 324. A first inner cavity 3241 is formed in the mounting ring 324. A water passing notch 3242 communicating with the first inner cavity 3241 is formed on the side of the mounting ring 324 facing the fixed ring 323. The water sprayed from the power pipe 3232 can enter the first inner cavity 3241 through the water passing notch 3242. The water spraying unit 4 includes a driving piston 42, a locking rod 43 and a contact body 41. The driving piston 42 and the locking rod 43 are coaxially and fixedly connected. The contact body 41 is coaxially and fixedly connected to the end of the driving piston 42 away from the locking rod 43. The contact body 41 is located on the side of the mounting ring 324 facing the filter cloth 21. A driving channel 325 for the driving piston 42 to pass through coaxially is formed on the wall of the first inner cavity 3241, and a locking cylinder 326 for the locking rod 43 to pass through coaxially is fixedly connected. The inner wall of the driving channel 325 contacts the side wall of the driving piston 42, and the inner wall of the locking cylinder 326 contacts the side wall of the locking rod 43. The diameter of the locking rod 43 is smaller than that of the driving piston 42. A water spraying hole 44 penetrates through the contact body 41, the driving piston 42 and the locking rod 43. The water inlet port of the water spraying hole 44 is located on the locking rod 43, and the water outlet port is located on the contact body 41. A connecting spring 33 is connected between the water spraying unit 4 and the mounting ring 324. The connecting spring 33 is located in the first inner cavity 3241. One end of the connecting spring 33 is fixedly connected to the end wall of the locking cylinder 326, and the other end is fixedly connected to the end of the driving piston 42 facing the locking rod 43. In the natural state, there is a gap between the contact body 41 and the filter cloth 21, and the water inlet port of the water spraying hole 44 is located in the locking cylinder 326. At this time, the liquid cannot enter from the water outlet port of the water spraying hole 44.

[0042] As Figure 4 , Figure 5 and Figure 6 shown, the side of the contact body 41 facing the filter cloth 21 is an arc surface. A plurality of water outlet ports of the water spraying hole 44 are provided and distributed on the arc surface of the side of the contact body 41 facing the filter cloth 21. When water flows into the first inner cavity 3241, the water pressure in the first inner cavity 3241 increases. The driving piston 42 is pushed by the water and moves. The water spraying unit 4 moves closer to the filter cloth 21 and contacts and abuts against the inner surface of the filter cloth 21. The filter cloth 21 undergoes a small deformation. At the same time, the water inlet port of the water spraying hole 44 moves from the locking cylinder 326 into the first inner cavity 3241. The arc surface of the contact body 41 is designed to reduce the friction between the contact body 41 and the filter cloth 21 and improve the smoothness when the two rub against each other.

[0043] As Figure 5As shown in the figure, multiple power pipes 3232 are fixedly connected to the chamber wall on the side of the second inner chamber 3231 close to the mounting ring 324. Along the circumference of the fixed ring 323, all the power pipes 3232 are inclined in the same direction, that is, the water flow sprayed from the fixed pipe towards the first inner chamber 3241 has a tendency of transverse swirl. A power partition plate 3243 is fixedly connected to the chamber wall of the first inner chamber 3241 and at the water passing notch 3242. The plate surface of the power partition plate 3243 forms an angle with the axis of the power pipe 3232. After the water sprayed from the power pipe 3232 enters the first inner chamber 3241, it forms a thrust on the power partition plate 3243, and thus the mounting ring 324 obtains rotational power. The water flow entering the first inner chamber 3241 enters the water spraying holes 44 and finally sprays out from the arc surface of the contact body 41, so a stable water flow is formed in the first inner chamber 3241, and the mounting ring 324 drives each water spraying unit 4 to rotate continuously.

[0044] As Figure 3 and Figure 6 shown in the figure, a plurality of vibration ribs 34 are fixedly connected to the inner edge of the fixed ring 323. The plurality of vibration ribs 34 are arranged in a circumferential array along the fixed ring 323. One end of the locking rod 43 away from the contact body 41 is located on the side of the mounting ring 324 facing the central shaft column 222 and is fixedly connected with a vibration plate 45. A contact ball 451 is embedded in the vibration plate 45. When the water spraying unit 4 contacts the filter cloth 21, the contact ball 451 makes rolling contact with the inner edge of the fixed ring 323 or the vibration ribs 34. During the rotation of the mounting ring 324, the contact ball 451 takes turns passing through each vibration rib 34 and collides, and the collision causes the water spraying unit 4 to vibrate. Since the contact body 41 and the filter cloth 21 remain in contact at this time, the vibration of the water spraying unit 4 directly affects the stable state of the filter cloth 21, and the particulate matter attached to the filter cloth 21 is more likely to fall off.

[0045] As Figure 1 and Figure 7 shown in the figure, the discharge port 13 is located at the central position of the bottom of the tank body 1. A filter joint 14 is detachably connected to the discharge port 13 through a flange. A filter screen 141 and a partition block 142 are fixedly connected to the filter joint 14. The partition block 142 is located on the side of the filter screen 141 facing the inner cavity of the tank body 1. The partition block 142 is formed by fixedly connecting a plurality of vertical plates to each other. The clear water for cleaning the filter cloth 21 in the tank body 1 carries solid particulate matter and finally leaves the tank body 1 through the discharge port 13. When passing through the filter joint 14, larger particulate matter is intercepted by the filter screen 141, thereby reducing the risk of blockage of the subsequent pipeline caused by large-sized particulate matter; the existence of the partition block 142 forms a plurality of relatively independent vertical spaces at the discharge port 13, and each space can store particulate matter separately, reducing the probability of blockage of the discharge port 13.

[0046] The working process of this embodiment:

[0047] When performing solid-liquid filtration separation on the mixed material after the hydrogenation reaction, the material enters the tank body 1 through the feed port 11 and passes through the filter cloth 21 to enter the inner side of the filter cloth 21. The solid particles are intercepted by the filter cloth 21, and the liquid material is drawn out of the tank body 1 by the filter 2. After the separation is completed, clean water is conveyed to the water spraying unit 4 through the cleaning pipe 31. The water spraying unit 4 sprays water flow to the inner side of the filter cloth 21 through the water spraying holes 44. At the same time, the installation ring 324 rotates continuously and the connecting frame 32 moves vertically, increasing the effective action area of the water flow on the filter cloth 21. The water flow acts on the filter cloth 21 from the inside to the outside, and the solid particles attached to the filter cloth 21 fall off into the inner cavity of the tank body 1. During the cleaning process, the discharge port 13 is in an open state. The solid particles with larger particle sizes remain on the upper side of the filter screen 141, and the water carrying the solid particles with smaller particle sizes leaves the tank body 1 through the discharge port 13. In this embodiment, the pore size of the filter cloth 21 is 75 - 140 um, and the pore size of the filter screen 141 is 0.8 mm.

[0048] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations to the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A recovery and filtration device for a nickel-containing catalyst, comprising a tank body, a filter and a cleaning mechanism. The tank body is provided with a feed port, a discharge port and a discharging port. The filter includes a support skeleton, a suction pipe and a cylindrical filter cloth. The filter cloth is connected in the tank body through the support skeleton. One end of the suction pipe communicates with the inside of the filter cloth, and the other end extends out of the tank body. The cleaning mechanism is used to clean the filter cloth; It is characterized in that, The cleaning mechanism includes a cleaning pipe and a plurality of water spraying units. The water spraying units are provided with water spraying holes. The water spraying units are located inside the filter cloth, and the water spraying holes face the filter cloth. The cleaning pipe communicates with the water spraying holes of each water spraying unit. The filter cloth and the tank body are coaxial. The cleaning mechanism further includes a connecting frame and an adjusting assembly. The connecting frame is used to relatively connect the cleaning pipe and the water spraying units. The connecting frame is slidably connected to the support skeleton, and the sliding direction is the axial direction of the tank body. The adjusting assembly is used to control the movement of the connecting frame; The connecting frame includes a fixed ring and an installation ring. The fixed ring and the cleaning pipe are relatively fixed. The adjusting assembly is used to control the movement of the fixed ring and the cleaning pipe. The installation ring is rotatably connected to the fixed ring coaxially. The water spraying units are connected to the installation ring. The plurality of water spraying units are arranged in a circumferential array around the installation ring. The installation ring and the filter cloth are coaxial; The water spraying unit includes a driving piston and a contact body. The contact body is fixedly connected to one end of the driving piston. A first inner cavity is formed in the installation ring. The driving piston is located in the first inner cavity. The contact body is located on the side of the installation ring facing the filter cloth. A driving channel for the driving piston to pass through coaxially is formed in the wall of the first inner cavity. The port of the driving channel communicates with the first inner cavity; A second inner cavity is formed in the fixed ring. The second inner cavity communicates with the cleaning pipe. A plurality of power pipes are fixedly connected in the fixed ring. The plurality of power pipes are fixedly connected to the wall of the second inner cavity on the side close to the installation ring. Along the circumference of the fixed ring, all the power pipes are inclined in the same direction. The pipe orifice of the power pipe is located on the side of the fixed ring facing the installation ring. A water passing notch communicating with the first inner cavity is formed on the side of the installation ring facing the fixed ring. A power partition is fixedly connected to the wall of the first inner cavity at the water passing notch. The plate surface of the power partition forms an angle with the axis of the power pipe.

2. The recycling and filtration device for a nickel-containing catalyst according to claim 1, wherein The water spraying unit is slidably connected to the installation ring, and the sliding direction is the radial direction of the installation ring. A connecting spring is connected between the water spraying unit and the installation ring. The telescopic direction of the connecting spring is parallel to the sliding direction of the water spraying unit. In the natural state, there is a gap between the water spraying unit and the inner side surface of the filter cloth.

3. The recycling and filtration device for a nickel-containing catalyst according to claim 1, characterized in that, The side of the contact body facing the filter cloth is an arc surface. A plurality of water outlet ports of the water spraying holes are distributed on the arc surface of the side of the contact body facing the filter cloth.

4. The recycling and filtration device for a nickel-containing catalyst according to claim 3, characterized in that, A locking rod is fixedly connected to the end of the driving piston away from the contact body. The diameter of the locking rod is smaller than that of the driving piston. A locking cylinder is fixedly connected to the inner wall of the first inner cavity. The locking cylinder is sleeved on the locking rod coaxially. The water spraying hole penetrates through the contact body, the driving piston and the locking rod. The water inlet port of the water spraying hole is located on the locking rod. In the natural state, the water inlet port of the water spraying hole is located in the locking cylinder.

5. The recycling and filtering device for a nickel-containing catalyst according to claim 4, wherein, The inner edge of the fixed ring is fixedly connected with a plurality of vibration bumps, and the plurality of vibration bumps are arranged in a circumferential array along the fixed ring. The end of the locking rod away from the contact body is located on the side of the mounting ring facing the central axis column and is fixedly connected with a vibration plate, and abutment balls are embedded in the vibration plate. When the water spray unit contacts the filter cloth, the abutment balls roll in contact with the inner edge of the fixed ring or the vibration bump.

6. A nickel-containing catalyst recovery and filtration device according to any one of claims 2-3, characterized in that, The supporting frame includes a fixed plate, a central axis column and a supporting plate, the fixed plate is fixedly connected to the inner wall of the tank body, the central axis column is fixedly connected to the fixed plate and is coaxial with the tank body, the support plate and the central axis column are coaxially fixedly connected, the fixed plate is located between the feed port and the discharge port, the filter cloth is fixedly connected to the side of the fixed plate facing the feed port, the support plate and the inner end wall of the filter cloth abut against each other, a filter channel is provided on the central axis column, one port of the filter channel is located on the inner side of the filter cloth, and the other port is located on the side of the fixed plate away from the filter cloth and is connected to the suction pipe.

7. A recovery and filtration device for a nickel-containing catalyst according to any one of claims 2-3, characterized in that, The adjustment assembly includes an adjustment frame, an adjustment block, an adjustment fixed pulley and an adjustment rope. The adjustment frame is fixedly connected to the tank body, the adjustment fixed pulley is rotatably arranged on the adjustment frame, the adjustment block is slidably connected to the adjustment frame, and the sliding direction is parallel to the axial direction of the tank body. The adjustment rope passes around the adjustment fixed pulley, the adjustment block and the adjustment rope are fixedly connected, and the cleaning pipe is fixedly connected to the adjustment block.

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