Filter provided with replaceable filter element and used for purifying catalytic slurry oil

Abstract

The invention provides a filter provided with a replaceable filter element and used for purifying catalytic slurry oil, and belongs to the technical field of slurry oil filtration. Comprising a filter main body of which the bottom end is provided with a mounting base, a separation assembly arranged in the filter main body, a filter element arranged in the filter main body and an element replacement driving assembly, when oil slurry is filtered, the oil slurry sequentially passes through the filter element from inside to outside to be subjected to double filtration, solid particles and impurities in the oil slurry can be effectively removed, the purity and quality of the oil slurry are improved, the filter element is installed between the upper pressing barrel and the lower pressing barrel, and when the filter element needs to be replaced, only the horizontal sliding plate needs to be driven by the hydraulic cylinder to move downwards, so that the oil slurry can be replaced conveniently. When the filter element needs to be replaced, the horizontal linkage plate and the lower pressing cylinders move downwards, the upper end of the filter element leaves the upper pressing cylinder, at the moment, the plugging cover plate at the position of the filter element needing to be replaced is opened, the filter element is moved upwards and taken out to be replaced, complex disassembling tools or tedious steps are not needed in the whole operation process, and the time needed for replacing the filter element is greatly shortened.

Description

Technical Field

[0001] The present invention belongs to the technical field of slurry filtration, and specifically relates to a filter for purifying catalytic slurry with replaceable filter elements. Background Art

[0002] In the petrochemical field, catalytic slurry is an important intermediate product. It is the unconverted hydrocarbons with a boiling point greater than 350 °C generated during the catalytic cracking process. Catalytic slurry usually contains a large amount of gum, asphaltene, and catalyst powder. The presence of these impurities not only affects the quality of the slurry but also may have an adverse impact on the subsequent processing process. Therefore, it is very necessary to effectively filter and purify the catalytic slurry.

[0003] Traditional filters have some problems when dealing with catalytic slurry. For example, the filter elements are prone to clogging, difficult to clean and regenerate, and the filtration accuracy is not high. These problems result in a short service life of the filtration device, frequent replacement of the filter elements, increased production costs. The structural design of traditional filters also makes the replacement process of the filter elements more complex, requiring a long downtime and affecting production efficiency. Therefore, there is an urgent need for a filter for purifying catalytic slurry with replaceable filter elements that can improve the filtration efficiency, extend the service life of the filter elements, simplify the filter element replacement process, and thus reduce production costs. Summary of the Invention

[0004] In view of the above problems, the present invention provides a filter for purifying catalytic slurry with replaceable filter elements.

[0005] The technical solution of the present invention is: A filter for purifying catalytic slurry with replaceable filter elements, including a filter body with an installation base at the bottom end, a separation component arranged inside the filter body, a filter element arranged inside the filter body, and a filter element replacement driving component;

[0006] A storage cylinder is provided at the center inside the filter body, with the upper end penetrating through to the outside and connected to an external slurry source through a pipeline.

[0007] The separation component includes an installation cylinder arranged at the center inside the filter body, and a plurality of separation vertical plates arranged in a grid pattern inside the filter body. The upper end of the installation cylinder is a closed structure. A plurality of filter cavities are formed between the separation vertical plates. Oil guiding pipes are provided at the lower end of the side wall of the storage cylinder corresponding to each filter cavity, and a plugging cover plate and an oil outlet are hinged on the outer wall of the filter body corresponding to each filter cavity.

[0008] There are a plurality of filter elements, which are respectively arranged in each filter cavity in one-to-one correspondence, and an upper pressing cylinder abutting against the upper end of the filter element is provided at the upper end of each filter cavity. The oil guiding pipe penetrates through the side wall of the corresponding upper pressing cylinder and extends into its interior.

[0009] The cartridge replacement driving assembly includes a horizontal sliding plate connected to the center of the upper end of the installation cylinder through a hydraulic cylinder, a vertical linkage rod with one side disposed at the bottom end of the horizontal sliding plate and the other side penetrating to the outside, a horizontal linkage plate connected to the bottom end of the vertical linkage rod, and a plurality of lower pressing cylinders disposed at the upper end of the horizontal linkage plate and corresponding to the bottom end of each filter chamber. A through hole is provided at the bottom end of each filter chamber and corresponding to the lower end of each of the lower pressing cylinders.

[0010] Furthermore, support legs are provided at the four corners of the bottom end of the installation base. Vertical sliding grooves are provided on the opposite sides of each of the support legs. Sliding blocks are provided on the side wall of the horizontal linkage plate corresponding to each of the vertical sliding grooves.

[0011] Note: The bottom end of the installation base is supported by the support legs to prevent it from directly contacting the ground and avoid wear. When the hydraulic cylinder drives the horizontal sliding plate to slide up and down, the horizontal linkage plate moves up and down synchronously. During this movement, the sliding blocks on the side wall of the horizontal linkage plate slide up and down in the vertical sliding grooves on the side walls of each support leg, thereby providing a lateral fulcrum for the horizontal linkage plate and improving the movement stability of the horizontal linkage plate.

[0012] Furthermore, a storage tank is connected to each oil outlet. A transparent observation window and a solenoid valve are provided on the side wall of the storage tank. A sealing plate is provided on the inner wall of the plugging cover plate. The size of the plugging cover plate is larger than the size of the filter element.

[0013] Note: After the filtered slurry flows out through the oil outlet, it will flow into the storage tank for temporary storage. At the same time, the oil level in the storage tank can be conveniently observed through the transparent observation window. When the oil level is too high, the solenoid valve can be opened for cleaning to avoid dangerous situations such as overflow that may be caused by too high an oil level, ensuring the safe operation of the storage tank. A sealing plate is provided on the inner wall of the plugging cover plate to increase the sealing between the plugging cover plate and the side wall of the filter body, preventing the internal slurry from flowing out. By defining the size between the plugging cover plate and the filter element, it is ensured that the filter element can be taken out of the filter body, improving the reliability of the filter element replacement work.

[0014] Furthermore, a stirring and anti-settling assembly is provided in the storage cylinder. The stirring and anti-settling assembly includes a vertical installation cylinder disposed at the center of the storage cylinder, a rotating motor connected to the upper end of the vertical installation cylinder through a rotating shaft, a plurality of vertical stirring mesh plates disposed circumferentially on the side wall of the vertical installation cylinder, a constant-temperature heating vertical plate disposed circumferentially on the side wall of the vertical installation cylinder and located between adjacent two of the vertical stirring mesh plates, and arc-shaped scraping plates disposed on the side of each vertical stirring mesh plate opposite to the vertical installation cylinder. A heat-conducting protective sleeve is sleeved outside each constant-temperature heating vertical plate.

[0015] Description: When the unfiltered slurry is temporarily stored in the storage cylinder, in order to prevent the slurry from depositing and solidifying, the vertically installed cylinder is rotated by a rotating motor, and the vertical stirring mesh plate, the constant-temperature heating vertical plate, and the arc scraping plate will also rotate synchronously. During the rotation, the slurry is stirred by each vertical stirring mesh plate to ensure the uniformity of the slurry in the vertical direction, effectively preventing the slurry from depositing and solidifying in local areas. The slurry is heated by the constant-temperature heating vertical plate, which helps to maintain the fluidity of the slurry, reduce its viscosity, and prevent the slurry from becoming viscous or even solidifying at a lower temperature. The slurry on the inner wall of the storage cylinder is scraped by the arc scraping plate, so that it can re-participate in the overall slurry flow and mixing, further reducing the possibility of the slurry depositing and solidifying.

[0016] Furthermore, a heat-conducting medium is filled between the heat-conducting protective sleeve and the corresponding constant-temperature heating vertical plate, and the heat-conducting medium is heat-conducting silicone grease or boron nitride.

[0017] Description: When the constant-temperature heating vertical plate heats the slurry, a heat-conducting protective sleeve is arranged on its outer wall, and a heat-conducting medium is filled between the heat-conducting protective sleeve and the corresponding constant-temperature heating vertical plate, which can improve the heat transfer efficiency from the constant-temperature heating vertical plate to the heat-conducting protective sleeve. The heat-conducting medium, heat-conducting silicone grease or boron nitride, has good heat conduction performance, which can make the heat generated by the constant-temperature heating vertical plate be transferred to the heat-conducting protective sleeve more quickly and evenly, and then transferred to the slurry, ensuring that the slurry can be heated more effectively, reducing the heating time, and improving the efficiency of the whole heating process.

[0018] Further, the filter element includes an inner filter screen, an outer filter screen arranged outside the inner filter screen, a lower annular plate arranged at the bottom ends of the inner filter screen and the outer filter screen, an upper annular plate arranged at the upper ends of the inner filter screen and the outer filter screen, a plurality of vertical reinforcing rods evenly distributed circumferentially between the lower annular plate and the upper annular plate and located on the outer wall of the outer filter screen, a filter residue box arranged at the bottom end of the lower annular plate, a plurality of V-shaped sedimentation ports arranged at the upper end of the filter residue box, a sewage discharge port arranged on the side wall of the filter residue box, and a sewage discharge plug arranged at the sewage discharge port.

[0019] Description: When the filter element is in use, the slurry passes through the inner filter screen and the outer filter screen from the inside to the outside for double filtration, which can effectively remove solid particles and impurities in the slurry, improve the purity and quality of the slurry. The inner filter screen and the outer filter screen are arranged between the upper annular plate and the lower annular plate, fixed and clamped, and are in contact with the upper pressing cylinder through the upper annular plate, and are in contact with the lower pressing cylinder through the filter residue box, so as to fixedly install the whole filter element. This fixing method enables the inner filter screen and the outer filter screen to maintain a relatively stable structure during the filtration process, and is not prone to deformation or displacement. The stable filter screen structure of the slurry can ensure the uniformity and continuity of the filtration process, and will not affect the filtration effect due to the shaking or misalignment of the inner filter screen and the outer filter screen. During the filtration process, the sediment in the slurry falls into the filter residue box through each V-shaped sediment port. When replacing the filter element and taking it out, pull out the sewage plug to clean the sediment, improving the cleaning effect.

[0020] Furthermore, the inner filter screen is made of a glass fiber filter screen, and the outer filter screen is made of a stainless steel filter screen.

[0021] Description: The glass fiber filter screen has a fine fiber structure and can effectively intercept smaller solid particles in the slurry. The stainless steel filter screen has a high strength. During the slurry filtration process, the outer filter screen needs to withstand a certain pressure, and the stainless steel filter screen can withstand this pressure without being easily damaged. The glass fiber filter screen first conducts a preliminary fine filtration on the slurry to remove most of the tiny impurities, and then the stainless steel filter screen further intercepts larger particles that may pass through the inner filter screen or plays a role in secondary filtration. This complementary filtration method can more comprehensively remove impurities in the slurry and improve the overall quality of the slurry.

[0022] Furthermore, a first annular pressing ring is provided at the bottom opening of the upper pressing cylinder, a second annular pressing ring is provided at the upper opening of the lower pressing cylinder, a first annular pressing groove opposite to the first annular pressing ring is provided at the upper end of the upper annular plate, and a second annular pressing groove opposite to the second annular pressing ring is provided at the bottom end of the filter residue box.

[0023] Description: When the upper annular plate is in contact with the upper pressing cylinder, the first annular pressing ring at the bottom end of the upper pressing cylinder will be inserted into the first annular pressing groove at the upper end of the upper annular plate to prevent misalignment when the upper annular plate is in contact with the upper pressing cylinder. When the lower pressing cylinder is in contact with the filter residue box, the second annular pressing ring at the upper end of the lower pressing cylinder is inserted into the second annular pressing groove at the bottom end of the filter residue box to prevent misalignment when the lower pressing cylinder is in contact with the filter residue box, greatly improving the installation stability of the inner filter screen and the outer filter screen and the working reliability of the filter element.

[0024] Further, a sealing ring is provided at the upper end of the horizontal linkage plate and corresponding to the periphery of each lower pressing cylinder.

[0025] Description: Improve the compactness when the upper pressing cylinder abuts against the filter residue box.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] When the filter for purifying catalytic slurry with replaceable filter elements of the present invention is in use, the untreated slurry is temporarily stored through the storage cylinder, and flows into each filtration chamber through the oil guide pipes at the lower end of the side wall of the storage cylinder and corresponding to each filtration chamber for batch filtration. This allows each filtration chamber to have sufficient time and space to fully filter the slurry, making the filtration process more orderly and efficient. Moreover, when filtering the slurry, the slurry passes through the inner filter screen and the outer filter screen in the filter element from the inside to the outside for double filtration, which can effectively remove solid particles and impurities in the slurry, improve the purity and quality of the slurry, and the filter element is installed between the upper pressing cylinder and the lower pressing cylinder. When the filter element needs to be replaced, only need to drive the horizontal sliding plate to move downward through the hydraulic cylinder, the horizontal linkage plate and each lower pressing cylinder move downward, so that the upper end of the filter element leaves the upper pressing cylinder. At this time, open the plugging cover plate at the position of the filter element to be replaced, move the filter element upward and take it out for replacement. The whole operation process does not require complex disassembly tools or cumbersome steps, greatly shortening the time required for replacing the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the external structure schematic diagram of the present invention;

[0029] Figure 2 is the internal structure schematic diagram of the present invention;

[0030] Figure 3 is the top view of the distribution of the partition components in the filter body of the present invention;

[0031] Figure 4 is the exploded connection diagram of the upper pressing cylinder, the filter element and the horizontal linkage plate of the present invention;

[0032] Figure 5 is the external structure schematic diagram of the filter element of the present invention;

[0033] Figure 6 is the structure schematic diagram of the filter residue box of the present invention;

[0034] Figure 7 is the internal structure schematic diagram of the storage cylinder of the present invention;

[0035] Figure 8 is the top view of the installation of the vertical stirring mesh plate and the constant temperature heating vertical plate outside the vertical installation cylinder of the present invention.

[0036] Among them, 1 - filter body, 10 - installation base, 11 - storage cylinder, 12 - oil guide pipe, 13 - plugging cover plate, 130 - sealing plate, 14 - oil outlet, 140 - oil storage tank, 141 - transparent observation window, 142 - solenoid valve, 15 - support leg, 150 - vertical sliding groove, 2 - partition component, 20 - installation cylinder, 21 - partition vertical plate, 22 - filter chamber, 221 - upper pressing cylinder, 222 - through port, 223 - first annular pressing ring, 3 - filter element, 30 - inner filter screen, 31 - outer filter screen, 32 - lower annular plate, 33 - upper annular plate, 330 - first annular pressing groove, 34 - vertical reinforcing rod, 35 - filter residue box, 350 - V-shaped sedimentation port, 351 - sewage outlet, 352 - sewage plug, 353 - second annular pressing groove, 4 - filter element replacement driving component, 40 - horizontal sliding plate, 400 - hydraulic cylinder, 41 - vertical linkage rod, 42 - horizontal linkage plate, 420 - sliding block, 421 - sealing ring, 43 - lower pressing cylinder, 430 - second annular pressing ring, 5 - stirring and anti-settling component, 50 - vertical installation cylinder, 51 - rotating motor, 52 - vertical stirring mesh plate, 53 - constant temperature heating vertical plate, 530 - heat conduction protective sleeve, 54 - arc scraping plate. Detailed implementation mode

[0037] In order to further understand the content of the present invention, the present invention will be described in detail below through embodiments.

[0038] Embodiment 1: As Figure 1 , 2 , and Figure 3 show, a filter for purifying catalytic slurry with replaceable filter elements, including a filter body 1 with an installation base 10 at the bottom end, a partition component 2 arranged in the filter body 1, a filter element 3 arranged in the filter body 1, and a filter element replacement driving component 4;

[0039] At the center inside the filter body 1, there is a storage cylinder 11 whose upper end penetrates to the outside and is connected to an external slurry source through a pipeline;

[0040] The partition component 2 includes an installation cylinder 20 arranged at the center inside the filter body 1 and 4 partition vertical plates 21 arranged in a grid shape inside the filter body 1. The upper end of the installation cylinder 20 is a closed structure. Nine filter chambers 22 are formed between the partition vertical plates 21. Oil guide pipes 12 are arranged at the lower end of the side wall of the storage cylinder 11 corresponding to each filter chamber 22. Plugging cover plates 13 and oil outlets 14 are hinged to the outer wall of the filter body 1 corresponding to each filter chamber 22;

[0041] There are 9 filter elements 3, and the 9 filter elements 3 are respectively arranged in each filter chamber 22 in a one-to-one correspondence. And at the upper end of each filter chamber 22, there is an upper pressing cylinder 221 that abuts against the upper end of the filter element 3. The oil guide pipe 12 penetrates the side wall of the corresponding upper pressing cylinder 221 and extends into its interior;

[0042] As Figure 4 , 5 , shown in Figure 6, the filter element 3 includes an inner filter screen 30, an outer filter screen 31 disposed around the inner filter screen 30, a lower annular plate 32 disposed at the bottom ends of the inner filter screen 30 and the outer filter screen 31, an upper annular plate 33 disposed at the upper ends of the inner filter screen 30 and the outer filter screen 31, 4 vertical reinforcing rods 34 evenly distributed circumferentially between the lower annular plate 32 and the upper annular plate 33 and located on the outer wall of the outer filter screen 31, and a filter residue box 35 disposed at the bottom end of the lower annular plate 32. Nine V-shaped sediment inlets 350 are provided at the upper end of the filter residue box 35, a sewage discharge port 351 is provided on the side wall of the filter residue box 35, and a sewage discharge plug 352 is provided at the sewage discharge port 351. When the filter element 3 is in use, the slurry passes through the inner filter screen 30 and the outer filter screen 31 from inside to outside for double filtration, which can effectively remove solid particles and impurities in the slurry, improve the purity and quality of the slurry. The inner filter screen 30 and the outer filter screen 31 are disposed between the upper annular plate 33 and the lower annular plate 32 and are fixedly clamped, and are abutted against the upper pressing cylinder 221 through the upper annular plate 33 and abutted against the lower pressing cylinder 43 through the filter residue box 35, so as to fixedly install the whole filter element 3. This fixing method enables the inner filter screen 30 and the outer filter screen 31 to maintain a relatively stable structure during the filtration process, and is not prone to deformation or displacement. The slurry can ensure the uniformity and continuity of the filtration process through the stable filter screen structure, and will not affect the filtration effect due to the shaking or misalignment of the inner filter screen 30 and the outer filter screen 31. During the filtration process, the sediment in the slurry drops into the filter residue box 35 through each V-shaped sediment inlet 350. When the filter element 3 is taken out for replacement, the sewage discharge plug 352 is pulled out to clean the sediment, improving the cleaning effect;

[0043] The inner filter screen 30 is made of a glass fiber filter screen, and the outer filter screen 31 is made of a stainless steel filter screen. The glass fiber filter screen has a fine fiber structure and can effectively intercept smaller solid particles in the slurry. The stainless steel filter screen has a higher strength. During the slurry filtration process, the outer filter screen 31 needs to withstand a certain pressure, and the stainless steel filter screen can withstand this pressure without being easily damaged. The glass fiber filter screen first performs a preliminary fine filtration on the slurry to remove most of the tiny impurities, and then the stainless steel filter screen further intercepts larger particles that may pass through the inner filter screen 30 or plays a role in secondary filtration. This complementary filtration method can more comprehensively remove impurities in the slurry and improve the overall quality of the slurry;

[0044] At the bottom opening of the upper pressing cylinder 221, there is a first annular pressing ring 223. At the upper opening of the lower pressing cylinder 43, there is a second annular pressing ring 430. At the upper end of the upper annular plate 33, there is a first annular pressing groove 330 opposite to the first annular pressing ring 223. At the bottom end of the filter residue box 35, there is a second annular pressing groove 353 opposite to the second annular pressing ring 430. When the upper annular plate 33 abuts against the upper pressing cylinder 221, the first annular pressing ring 223 at the bottom end of the upper pressing cylinder 221 will insert into the first annular pressing groove 330 at the upper end of the upper annular plate 33, preventing dislocation when the upper annular plate 33 abuts against the upper pressing cylinder 221. When the lower pressing cylinder 43 abuts against the filter residue box 35, the second annular pressing ring 430 at the upper end of the lower pressing cylinder 43 inserts into the second annular pressing groove 353 at the bottom end of the filter residue box 35, preventing dislocation when the lower pressing cylinder 43 abuts against the filter residue box 35, greatly improving the installation stability of the inner filter screen 30 and the outer filter screen 31 and enhancing the working reliability of the filter element 3;

[0045] At the upper end of the horizontal linkage plate 42 and corresponding to the periphery of each lower pressing cylinder 43, there is a sealing ring 421, improving the compactness when the lower pressing cylinder 43 abuts against the filter residue box 35. Among them, the sealing ring 421 adopts existing materials, for example, hydrogenated nitrile rubber can be used;

[0046] The filter element replacement driving assembly 4 includes a horizontal sliding plate 40 connected to the center of the upper end of the installation cylinder 20 through a hydraulic cylinder 400, a vertical linkage rod 41 with one side provided at the bottom end of the horizontal sliding plate 40 and the other side penetrating to the outside, a horizontal linkage plate 42 connected to the bottom end of the vertical linkage rod 41, and 9 lower pressing cylinders 43 provided at the upper end of the horizontal linkage plate 42 and corresponding to the bottom end positions of each filtering cavity 22. At the bottom end of each filtering cavity 22 and corresponding to the lower ends of the respective lower pressing cylinders 43, there is a through hole 222. Among them, the hydraulic cylinder 400 adopts existing technology, for example, an HSG type hydraulic cylinder can be used.

[0047] Embodiment 2: This embodiment discloses a filtering method for purifying catalytic oil slurry. Based on the filter for purifying catalytic oil slurry with replaceable filter elements in Embodiment 1, it includes the following steps:

[0048] S1. Convey the oil slurry from an external oil slurry source to the storage cylinder 11 at the center inside the filter main body 1 through a pipeline, and flow into each filtering cavity 22 through the oil guide pipes 12 at the lower end of the side wall of the storage cylinder 11 and corresponding to each filtering cavity 22;

[0049] S2. In each filtering cavity 22, the oil slurry is double-filtered successively from the inside to the outside through the inner filter screen 30 and the outer filter screen 31 in the filter element 3. The inner filter screen 30 first intercepts the smaller solid particles in the oil slurry, and the outer filter screen 31 further intercepts the larger particles that may pass through the inner filter screen 30. During the filtering process, the sediment in the oil slurry drops into the filter residue box 35 through the respective V-shaped sediment collection openings 350 at the upper end of the filter residue box 35;

[0050] S3. The slurry oil filtered by the filter element 3 flows out through the oil outlet 14 corresponding to each filtering cavity 22;

[0051] S4. When the filter element 3 needs to be replaced, the hydraulic cylinder 400 is used to drive the horizontal sliding plate 40 to move downward, and the horizontal linkage plate 42 and each lower pressing cylinder 43 move downward, so that the upper end of the filter element 3 leaves the upper pressing cylinder 221. At this time, the plugging cover plate 13 at the position of the filter element 3 to be replaced is opened, and the filter element 3 is moved upward and taken out for replacement;

[0052] S5. The new filter element 3 is placed on the lower pressing cylinder 43 in the filtering cavity 22, and the hydraulic cylinder 400 is used to drive the horizontal sliding plate 40 to move upward, and the horizontal linkage plate 42 and each lower pressing cylinder 43 move upward, so that the upper end of the filter element 3 abuts against the upper pressing cylinder 221, and then the plugging cover plate 13 is closed.

[0053] Embodiment 3: The difference between this embodiment and Embodiment 1 is as follows:

[0054] As Figure 1 , 2 shown, support legs 15 are provided at the four corners of the bottom end of the mounting base 10, vertical sliding grooves 150 are provided on the opposite sides of each support leg 15, and sliding blocks 420 are provided on the side wall of the horizontal linkage plate 42 corresponding to each vertical sliding groove 150. The bottom end of the mounting base 10 is supported by the support legs 15 to avoid direct contact with the ground and prevent wear. When the hydraulic cylinder 400 drives the horizontal sliding plate 40 to slide up and down, the horizontal linkage plate 42 moves up and down synchronously. During this movement, the sliding blocks 420 on the side wall of the horizontal linkage plate 42 slide up and down in the vertical sliding grooves 150 on the side walls of each support leg 15, thereby providing a lateral fulcrum for the horizontal linkage plate 42 and improving the movement stability of the horizontal linkage plate 42;

[0055] A storage oil tank 140 is connected to each oil outlet 14. A transparent observation window 141 and a solenoid valve 142 are provided on the side wall of the storage oil tank 140. A sealing plate 130 is provided on the inner wall of the plugging cover plate 13. The size of the plugging cover plate 13 is larger than that of the filter element 3, which avoids dangerous situations such as overflow that may be caused by too high an oil level and ensures the safe operation of the storage oil tank 140. The sealing plate 130 is provided on the inner wall of the plugging cover plate 13 to increase the sealing performance between the plugging cover plate 13 and the side wall of the filter body 1 and prevent the internal slurry oil from flowing out. By limiting the size between the plugging cover plate 13 and the filter element 3, it is ensured that the filter element 3 can be taken out of the filter body 1, improving the reliability of the filter element 3 replacement work. Among them, the solenoid valve 142 adopts the existing technology, for example, a piston type solenoid valve can be used, and the sealing plate 130 adopts the existing material, for example, hydrogenated nitrile rubber can be used.

[0056] Embodiment 4: The difference between this embodiment and Embodiment 2 is as follows:

[0057] In step S4, the bottom end of the mounting base 10 is supported by the support legs 15. When the hydraulic cylinder 400 drives the horizontal sliding plate 40 to slide up and down, the horizontal linkage plate 42 moves up and down synchronously. During this movement, the sliding block 420 on the side wall of the horizontal linkage plate 42 slides up and down in the vertical sliding groove 150 on the side wall of each support leg 15;

[0058] In step S3, after the filtered slurry flows out through the oil outlet 14, it will flow into the storage tank 140 for temporary storage. At the same time, the oil level in the storage tank 140 can be conveniently observed through the transparent observation window 141. When the oil level is too high, the solenoid valve 142 can be opened for cleaning.

[0059] Embodiment 5: The difference between this embodiment and Embodiment 3 is that:

[0060] As Figure 7 、 8 shown, a stirring and anti-settling assembly 5 is provided in the storage cylinder 11. The stirring and anti-settling assembly 5 includes a vertical installation cylinder 50 provided at the center of the storage cylinder 11, a rotary motor 51 connected to the upper end of the vertical installation cylinder 50 through a rotating shaft, 4 vertical stirring mesh plates 52 arranged circumferentially on the side wall of the vertical installation cylinder 50, a constant-temperature heating vertical plate 53 arranged circumferentially on the side wall of the vertical installation cylinder 50 and located between adjacent two vertical stirring mesh plates 52, and an arc-shaped scraping plate 54 provided on the side of each vertical stirring mesh plate 52 opposite to the vertical installation cylinder 50. A heat-conducting protective sleeve 530 is sleeved outside each constant-temperature heating vertical plate 53 to ensure the uniformity of the slurry in the vertical direction, effectively prevent the slurry from depositing and solidifying in a local area, heat through the constant-temperature heating vertical plate 53, which helps to maintain the fluidity of the slurry, reduce its viscosity, and prevent the slurry from becoming viscous or even solidifying at a lower temperature. The slurry on the inner wall of the storage cylinder 11 is scraped by the arc-shaped scraping plate 54 to make it re-participate in the overall slurry flow and mixing, further reducing the possibility of the slurry depositing and solidifying. Among them, the rotary motor 51 and the constant-temperature heating vertical plate 53 adopt existing technologies. For example, the rotary motor 51 can adopt a motor with the model Y132S-4, and the constant-temperature heating vertical plate 53 can adopt a constant-temperature heating plate with the model HP-303DU;

[0061] A heat-conducting protective sleeve 530 and a corresponding constant-temperature heating vertical plate 53 are filled with a heat-conducting medium therebetween. The heat-conducting medium is heat-conducting silicone grease or boron nitride. When the constant-temperature heating vertical plate 53 heats the slurry, a heat-conducting protective sleeve 530 is arranged on its outer wall, and a heat-conducting medium is filled between the heat-conducting protective sleeve 530 and the corresponding constant-temperature heating vertical plate 53, which can improve the heat transfer efficiency from the constant-temperature heating vertical plate 53 to the heat-conducting protective sleeve 530. The heat-conducting medium, heat-conducting silicone grease or boron nitride, has good heat conduction performance, which can make the heat generated by the constant-temperature heating vertical plate 53 be transferred to the heat-conducting protective sleeve 530 more quickly and evenly, and then be transferred to the slurry, ensuring that the slurry can be heated more effectively, reducing the heating time, and improving the efficiency of the whole heating process.

[0062] Example 6: The difference between this example and Example 4 lies in that:

[0063] In step S1, when the unfiltered slurry is temporarily stored in the storage cylinder 11, the vertical installation cylinder 50 is driven to rotate by the rotating motor 51, and the vertical stirring mesh plate 52, the constant-temperature heating vertical plate 53 and the arc scraping plate 54 will also rotate synchronously. During the rotation, the slurry is stirred by each vertical stirring mesh plate 52, heated by the constant-temperature heating vertical plate 53, which helps to maintain the fluidity of the slurry, and the slurry on the inner wall of the storage cylinder 11 is scraped by the arc scraping plate 54.

Claims

1. A filter for purifying catalytic oil slurry with a replaceable filter element, comprising a filter body (1) with a mounting base (10) at the bottom end, a partition assembly (2) arranged in the filter body (1), a filter element (3) arranged in the filter body (1), and a core replacement drive assembly (4); A storage cylinder (11) is provided at the center of the filter body (1), the upper end of which penetrates to the outside and is connected to an external oil slurry source through a pipeline; The partition assembly (2) comprises a mounting cylinder (20) arranged at the center of the filter body (1), and a plurality of partition vertical plates (21) arranged in the filter body (1) and distributed in a grid pattern, the upper end of the mounting cylinder (20) being a closed structure, a plurality of filter chambers (22) being formed between the respective partition vertical plates (21), an oil guide pipe (12) being provided at the lower end of the side wall of the storage cylinder (11) and corresponding to the respective filter chambers (22), and a blocking cover plate (13) and an oil outlet (14) being hingedly connected to the outer wall of the filter body (1) and corresponding to the respective filter chambers (22); There are a plurality of filter elements (3), and the plurality of filter elements (3) are arranged in respective filter chambers (22) in a one-to-one correspondence, and an upper compression cylinder (221) abutting against the upper end of the filter element (3) is arranged at the upper end of each filter chamber (22), and the oil guide pipe (12) passes through the side wall of the corresponding upper compression cylinder (221) and extends into the interior thereof; The core changing drive assembly (4) comprises a horizontal sliding plate (40) connected to the center of the upper end of the mounting cylinder (20) through a hydraulic cylinder (400), a vertical linkage rod (41) with one side arranged at the bottom end of the horizontal sliding plate (40) and the other side extending to the outside, a horizontal linkage plate (42) connected to the bottom end of the vertical linkage rod (41), and a plurality of lower clamping cylinders (43) arranged at the upper end of the horizontal linkage plate (42) and corresponding to the bottom end of each filter cavity (22), and a through opening (222) is provided at the bottom end of each filter cavity (22) and corresponding to the lower end of each lower clamping cylinder (43).

2. The filter for purifying catalytic oil slurry with a replaceable filter element according to claim 1, characterized in that: The four corners of the bottom of the mounting base (10) are each provided with a supporting leg (15), and a vertical sliding groove (150) is provided on the opposite side of each supporting leg (15), and a sliding block (420) is provided on the side wall of the horizontal linkage plate (42) and corresponding to each vertical sliding groove (150).

3. The filter for purifying catalytic oil slurry with a replaceable filter element according to claim 1, characterized in that: Each of the oil outlets (14) is connected to an oil storage tank (140), a transparent observation window (141) and a solenoid valve (142) are provided on the side wall of the oil storage tank (140), a sealing plate (130) is provided on the inner wall of the blocking cover plate (13), and the size of the blocking cover plate (13) is larger than the size of the filter element (3).

4. The filter for purifying catalytic oil slurry with a replaceable filter element according to claim 1, characterized in that: A stirring anti-settling assembly (5) is arranged in the storage cylinder (11), and the stirring anti-settling assembly (5) comprises a vertical installation cylinder (50) arranged at the center of the storage cylinder (11), a rotating motor (51) connected to the upper end of the vertical installation cylinder (50) through a rotating shaft, a plurality of vertical stirring mesh plates (52) arranged along the circumferential direction on the side wall of the vertical installation cylinder (50), a constant temperature heating vertical plate (53) arranged along the circumferential direction on the side wall of the vertical installation cylinder (50) and located between two adjacent vertical stirring mesh plates (52), and an arc-shaped scraping plate (54) arranged on the side of each vertical stirring mesh plate (52) opposite to the vertical installation cylinder (50), and each constant temperature heating vertical plate (53) is provided with a heat conductive protective sleeve (530) on the outside.

5. The filter for purifying catalytic oil slurry with a replaceable filter element according to claim 4, characterized in that: A heat-conducting medium is filled between the heat-conducting protective sleeve (530) and the corresponding constant-temperature heating vertical plate (53), and the heat-conducting medium is heat-conducting silicone grease or boron nitride.

6. The filter for purifying catalytic oil slurry with a replaceable filter element according to claim 1, characterized in that: The filter element (3) comprises an inner filter screen (30), an outer filter screen (31) arranged on the periphery of the inner filter screen (30), a lower annular plate (32) arranged at the bottom ends of the inner filter screen (30) and the outer filter screen (31), an upper annular plate (33) arranged at the upper ends of the inner filter screen (30) and the outer filter screen (31), a plurality of vertical reinforcement rods (34) uniformly distributed between the lower annular plate (32) and the upper annular plate (33) along the circumferential direction and located on the outer wall of the outer filter screen (31), and a filter residue box (35) arranged at the bottom end of the lower annular plate (32), wherein the upper end of the filter residue box (35) is provided with a plurality of V-shaped sewage sinking ports (350), the side wall of the filter residue box (35) is provided with a sewage discharge port (351), and the sewage discharge port (351) is provided with a sewage discharge plug (352).

7. The filter for purifying catalytic oil slurry with a replaceable filter element according to claim 6, characterized in that: The inner filter (30) is made of a glass fiber filter, and the outer filter (31) is made of a stainless steel filter.

8. The filter for purifying catalytic oil slurry with a replaceable filter element according to claim 6, characterized in that: A first annular clamping ring (223) is provided at the bottom opening of the upper clamping cylinder (221), a second annular clamping ring (430) is provided at the upper opening of the lower clamping cylinder (43), a first annular clamping groove (330) opposite to the first annular clamping ring (223) is provided at the upper end of the upper annular plate (33), and a second annular clamping groove (353) opposite to the second annular clamping ring (430) is provided at the bottom end of the filter residue box (35).

9. The filter for purifying catalytic oil slurry with a replaceable filter element according to claim 1, characterized in that: A sealing ring (421) is provided at the upper end of the horizontal linkage plate (42) and at the outer periphery of each lower pressing cylinder (43).

Images