A device for purifying catalytic slurry oil

Abstract

The application discloses a kind of purification devices of catalytic oil slurry, belong to the field of petrochemical industry, including tank body, respectively open in the feed end and discharge end of tank body two ends;The inner wall of the tank body is fixed with upper baffle and lower baffle, the upper baffle is opened in the discharge port, the lower baffle is opened in the feed port;And upper baffle and lower baffle divide the tank body into three independent chambers;The scheme is provided with a hollow cylinder outside filter element, a rotatable first spiral flow guide is further arranged between the inner wall of hollow cylinder and the outer wall of filter element;The shear force generated by the rotation of the first spiral flow guide can prevent the filter cake on the surface of the filter element from forming a dense thick layer, which helps to control the filter cake layer within a relatively thin thickness range, slows down the rate of pressure difference rise, thereby prolonging the operation time of the single filtration cycle, and significantly improves the single continuous processing capacity of the device.

Description

Technical Field

[0001] This invention relates to the field of petrochemicals, and more specifically, to a purification device for catalytic oil slurry. Background Technology

[0002] Catalytic slurry is the heaviest byproduct at the bottom of the fractionation tower in a refinery's fluid catalytic cracking unit. Catalytic slurry purification refers to the process of removing solid catalyst powder (fine powder), ash, and other impurities from the catalytic cracking slurry through physical or chemical means to bring it up to specific quality standards.

[0003] Currently, the mainstream purification technologies for catalytic oil slurries include mechanical separation (centrifugation / sedimentation), precision filtration (hard membrane / metal / ceramic), and electrostatic separation. Mechanical separation (centrifugation / sedimentation) has a large throughput, but its interception effect on fine powders is poor; electrostatic separation has a lower pressure drop and is effective for ultrafine powders, but the equipment investment is high and it is sensitive to water content; precision filtration (hard membrane / metal / ceramic) is widely used because of its high purification accuracy and lower investment cost compared to electrostatic separation.

[0004] Although precision filtration can purify catalytic oil slurry, existing precision filtration technologies result in a rapid build-up of the filter cake when processing high-hardness catalyst particles, leading to a higher backwashing frequency, which increases operating energy consumption and equipment downtime. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a purification device for catalytic oil slurry.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A purification device for catalytic oil slurry includes a tank, an inlet end and a discharge end respectively opened at both ends of the tank;

[0008] The inner wall of the tank is fixedly connected with an upper partition and a lower partition. The upper partition has a discharge port and the lower partition has a feed port. The upper partition and the lower partition divide the tank into three independent chambers, two of which are connected to the feed end and the discharge end, respectively.

[0009] A purification assembly is provided between the upper partition and the lower partition, and the purification assembly includes a hollow cylinder with its two ends fixed to the upper partition and the lower partition respectively, a filter element fixed to the lower end of the upper partition and located in the hollow cylinder, a rotating ring rotatably connected to the lower end of the upper partition, a first driven rotor rotatably connected to the upper end of the lower partition, and a first spiral guide plate connecting the rotating ring and the first driven rotor.

[0010] It also includes a rotor drive assembly disposed inside the tank and used to drive the first driven rotor to rotate.

[0011] Furthermore, a sealing plate is fixedly connected to one side of the feed end. The rotor drive assembly includes a connecting seat fixedly connected to the lower end of the lower partition, a first gear rotatably connected inside the lower partition and a second gear meshing with the first gear, a first gear disk rotatably connected inside the lower partition and meshing with the second gear, and a first drive rotor fixedly connected to the upper end of the first gear disk. The lower end of the connecting seat is sealed to the upper end of the sealing plate, and a motor drive unit is fixedly connected to the lower end of the sealing plate. The output shaft of the motor drive unit passes through the sealing plate, the connecting seat, and the lower partition and is connected to the first gear.

[0012] Furthermore, a support guide is fixed to the upper end of the lower partition, and the lower end of the filter element is fixed to the upper end of the support guide, and the cross-section of the support guide is conical.

[0013] Furthermore, the first spiral guide vane is a non-equidistant spiral guide vane, and the pitch of the first spiral guide vane gradually decreases from the lower end to the upper end.

[0014] Furthermore, it also includes a magnetic field coordination component, which includes a first heat insulation component fixed to the outer wall of the hollow cylinder, a first electromagnetic coil fixed to the outside of the first heat insulation component, a plurality of first magnetic focusing media fixed to the outside of the first spiral guide plate, and a power supply fixed to the inner wall of the tank and electrically connected to the first electromagnetic coil.

[0015] Furthermore, it also includes an annular settling assembly, which includes a collection cylinder fixed to the outside of the hollow cylinder, a feed chamber opened inside the collection cylinder and a collection chamber connected to the feed chamber, an escape port opened outside the hollow cylinder and connecting the internal cavity of the hollow cylinder to the feed chamber, a drain port opened outside the collection cylinder and connected to the collection chamber, and a discharge pipe fixed at one end to the drain port, with the other end of the discharge pipe penetrating the tank and extending outward.

[0016] Furthermore, a second heat insulation component is fixedly connected to the outside of the collecting cylinder, and a second electromagnetic coil is fixedly connected to the outside of the second heat insulation component. A second driven rotor is rotatably connected to the inner wall of the feeding chamber, and a second spiral guide vane is fixedly connected to one side of the second driven rotor. A plurality of second magnetic media are fixedly connected to the outer surface of the second spiral guide vane.

[0017] Furthermore, the lower end of the upper partition is rotatably connected to a second gear and a third gear meshing with the second gear. The lower end of the second gear is fixedly connected to a second drive rotor, and the lower end of the second gear is fixedly connected to a drive shaft. The other end of the drive shaft passes through the interior of the lower partition and is connected to the first gear, and the other end of the drive shaft is rotatably connected in the lower partition. A support seat is also fixedly connected to the inner wall of the tank, and the support seat is located in the cavity between the upper partition and the lower partition. The drive shaft is rotatably connected inside the support seat.

[0018] Furthermore, multiple sheaths are fixed to the inner edge of the first spiral guide vane, and multiple magnetostrictive vibrating plates are fixed inside the multiple sheaths respectively. One end of each of the multiple magnetostrictive vibrating plates extends out from inside the sheath and extends toward the outer surface of the filter element.

[0019] Furthermore, the lower end of the upper partition plate is provided with an insertion groove that communicates with the discharge port. A sealing ring is fixed to the inner wall of the insertion groove. The upper end of the filter element is inserted into the insertion groove and fits against the sealing ring. A sealing pressure ring is also sleeved on the upper end of the filter element. The upper end of the sealing pressure ring is fixedly connected to the lower end of the upper partition plate. An ultrasonic transducer ring is also fixedly connected inside the upper partition plate. The ultrasonic transducer ring is sleeved on the outside of the end of the filter element that is inserted into the insertion groove. The ultrasonic transducer ring is used to connect to the ultrasonic transducer.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] (1) This solution sets the filter element in the chamber between the upper and lower partitions, and a hollow cylinder is also fitted on the outside of the filter element. A rotatable first spiral guide vane is also set between the inner wall of the hollow cylinder and the outer wall of the filter element. The shearing force generated by the rotation of the first spiral guide vane can prevent the filter cake on the surface of the filter element from forming a dense thick layer. This helps to control the filter cake layer within a thinner thickness range, slows down the rate of pressure difference increase, and thus extends the running time of a single filtration cycle. This greatly improves the single continuous processing capacity of the device.

[0022] (2) This scheme is equipped with a magnetic field coordination component. The uniform magnetic field generated by the first electromagnetic coil penetrates the non-magnetic hollow cylinder. When it encounters the internal magnetic concentrating medium, the magnetic field lines will be highly distorted, forming a high gradient magnetic field. When the oil slurry flows through the spiral guide plate, the fine catalyst dust will approach the surface of the magnetic concentrating medium and attract each other under the action of the magnetic force. It will rapidly agglomerate from the micron level into large particles of tens of microns. The centrifugal force generated by the rotation of the spiral blades will throw these agglomerated large particles to the outside, avoiding them from directly hitting the filter element surface, which greatly reduces the interception pressure of the filter element and makes the pressure difference and processing throughput more stable.

[0023] (3) This scheme is equipped with an annular settling component. Large agglomerates thrown out by the first spiral guide plate will be discharged together with the catalytic slurry through the escape port and enter the collection cylinder. At the same time, the second magnetic medium on the second spiral guide plate inside the collection cylinder is used to attract the agglomerates entering the collection cylinder and throw them towards the inner wall area of ​​the collection cylinder. As the catalytic slurry flows downward, it enters the collection chamber and is finally discharged from the discharge pipe. Most of the magnetic agglomerates in the hollow cylinder are continuously removed, avoiding the problem that a large number of agglomerates may be broken up again and re-enter the cycle after accumulating at the edge of the magnetic field.

[0024] (4) This scheme is equipped with an ultrasonic transducer ring and a magnetostrictive vibrator. The alternating or pulsed magnetic field provided by the electromagnetic coil causes the magnetostrictive vibrator attached to the inner edge of the first spiral guide plate to generate high-frequency micro-amplitude vibration, which can effectively destroy the magnetic linkage structure between magnetic particles, promote the flow of the filter cake and lose its adhesion. The rotating first spiral guide plate performs macroscopic shearing, while the micro-vibration of the edge of the first spiral guide plate is like countless "tiny hands" performing high-frequency, local scraping and disturbance on the surface of the filter element, which can more effectively prevent the initial adhesion of particles and the compaction of the bottom layer of the filter cake. The ultrasonic transducer ring can transmit ultrasonic waves to the filter element, which are transmitted to the entire filter element through the fixed end of the filter element. The overall vibration of the filter element can loosen the filter cake structure that has been formed on the surface, reduce its adhesion to the surface of the filter element, and make it easier for it to be carried away by the mainstream shearing force. This ensures that the pressure difference and flow rate of the device are more stable. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the upper partition, lower partition, connecting seat, and support seat of the present invention;

[0027] Figure 3 This is a schematic diagram of the filter element, supporting guide, first driven rotor, and filter element structure of the present invention;

[0028] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0029] Figure 5 This is a schematic diagram of the rotor drive assembly structure of the present invention;

[0030] Figure 6 This is a cross-sectional view of the upper partition, lower partition, hollow cylinder, and annular settling assembly of the present invention;

[0031] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point B;

[0032] Figure 8 This is a bottom view of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of the second driven rotor, the second spiral guide vane, and the second heat insulation component of the present invention;

[0034] Figure 10 This is a schematic diagram of the sealing ring, ultrasonic transducer ring, and discharge port structure of the present invention;

[0035] Figure 11 This is a schematic diagram of the connection structure between the sealing ring, the sealing pressure ring, and the filter element of the present invention.

[0036] Explanation of the labels in the diagram:

[0037] 1. Tank body; 11. Support base; 2. Feeding end; 21. Sealing plate; 3. Discharge end; 41. Upper partition plate; 411. Sealing ring; 412. Ultrasonic transducer ring; 413. Sealing pressure ring; 414. Insertion groove; 42. Discharge port; 43. Lower partition plate; 44. Feeding port; 45. Hollow cylinder; 451. Escape port; 46. Filter element; 461. Support guide component; 47. First spiral guide vane; 471. Magnetostrictive vibrator; 472. Sheath; 48. First driven rotor; 49. Rotating ring; 5. Rotor drive assembly; 51. Motor drive unit; 52. 53. Connecting seat; 54. First gear; 55. Second gear; 56. First gear disc; 57. First driving rotor; 58. Drive shaft; 59. Third gear; 50. Second gear disc; 51. Second driving rotor; 6. Magnetic field coordination component; 61. First heat insulation component; 62. First electromagnetic coil; 63. First magnetic focusing medium; 7. Annular settling component; 71. Collecting cylinder; 72. Second driven rotor; 73. Second spiral guide vane; 731. Second magnetic focusing medium; 74. Second heat insulation component; 75. Second electromagnetic coil; 76. Collecting chamber; 77. Discharge pipe. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Please see Figures 1 to 11 A purification device for catalytic oil slurry includes a tank 1, a feed end 2 and a discharge end 3 respectively opened at both ends of the tank 1;

[0040] The inner wall of the tank 1 is fixed with an upper partition 41 and a lower partition 43. The upper partition 41 has a discharge port 42 and the lower partition 43 has a feed port 44. The upper partition 41 and the lower partition 43 divide the tank 1 into three independent chambers, two of which are connected to the feed end 2 and the discharge end 3, respectively.

[0041] A purification assembly is provided between the upper partition 41 and the lower partition 43. The purification assembly includes a hollow cylinder 45 with its two ends fixed to the upper partition 41 and the lower partition 43 respectively, a filter element 46 fixed to the lower end of the upper partition 41 and located in the hollow cylinder 45, a rotating ring 49 rotatably connected to the lower end of the upper partition 41, a first driven rotor 48 rotatably connected to the upper end of the lower partition 43, and a first spiral guide vane 47 connecting the rotating ring 49 and the first driven rotor 48.

[0042] It also includes a rotor drive assembly 5 disposed inside the tank 1 and used to drive the first driven rotor 48 to rotate.

[0043] A sealing plate 21 is fixedly connected to one side of the feed end 2. The rotor drive assembly 5 includes a connecting seat 52 fixedly connected to the lower end of the lower partition 43, a first gear 53 rotatably connected inside the lower partition 43 and a second gear 54 meshing with the first gear 53, a first gear disk 55 rotatably connected inside the lower partition 43 and meshing with the second gear 54, and a first drive rotor 56 fixedly connected to the upper end of the first gear disk 55. The lower end of the connecting seat 52 is sealed to the upper end of the sealing plate 21, and a motor drive unit 51 is fixedly connected to the lower end of the sealing plate 21. The output shaft of the motor drive unit 51 passes through the sealing plate 21, the connecting seat 52 and the lower partition 43 and is connected to the first gear 53.

[0044] By adopting the above technical solution, the catalytic slurry to be purified enters the tank 1 from the feed end 2. The slurry inside the tank 1 enters the hollow cylinder 45 through the feed port 44. Under pressure, the slurry passes through the filter element 46 from the outside to the inside, and the catalyst particles are intercepted on the outer surface of the filter element 46. The purified oil enters the filter element 46 and flows through the discharge port 42, enters the chamber above the tank 1, and is finally discharged through the discharge end 3. In this process, the motor drive unit 51 can drive the first gear 53 to rotate. The rotation of the first gear 53 drives the second gear 54 and the first gear disk 55 to rotate. The rotation of the first gear disk 55 drives the first active rotor 56 to rotate. The rotation of the first active rotor 56 drives the first driven rotor 48 to rotate. The rotation of the first driven rotor 48 drives the first spiral guide vane 47 and the rotating ring 49 to rotate. When the first spiral guide vane 47 rotates, the shearing force generated by its rotation can prevent the filter cake on the surface of the filter element 46 from forming a dense thick layer; this helps to control the filter cake layer within a thinner thickness range, slows down the rate of pressure difference increase, and thus extends the running time of a single filtration cycle; thereby greatly improving the single continuous processing capacity of the device.

[0045] It should be noted that the first driving rotor 56 and the first driven rotor 48 achieve power transmission through magnetic field coupling. There is no physical contact between them; torque is transmitted through the interaction of magnetic fields. This is a mature existing technology and will not be elaborated further here. This application uses a permanent magnet magnetic coupling scheme.

[0046] like Figure 3As shown, a support guide 461 is fixed to the upper end of the lower partition 43, and the lower end of the filter element 46 is fixed to the upper end of the support guide 461. The cross-section of the support guide 461 is conical. The support guide 461 can guide the slurry after passing through the feed port 44 to smoothly enter the annular gap between the hollow cylinder 45 and the filter element 46, reducing the accumulation of particles in the bottom dead zone.

[0047] The first spiral guide vane 47 is a non-uniform pitch spiral guide vane, and the pitch of the first spiral guide vane 47 gradually decreases from the bottom end to the top end; this design can compensate for the decrease in axial flow velocity caused by fluid entering the filter element 46, and ensure that the shear force is uniform along the entire length of the filter element 46. Its pitch P decreases linearly or exponentially along the axial height H; the rate of change of pitch matches the axial flow velocity gradient of the clean oil inside the filter element 46, so as to maintain the uniform radial shear force throughout the entire length of the filter element 46.

[0048] like Figure 4 and Figure 7 As shown, it also includes a magnetic field coordination component 6, which includes a first heat insulation member 61 fixed to the outer wall of the hollow cylinder 45, a first electromagnetic coil 62 fixed to the outside of the first heat insulation member 61, a plurality of first magnetic focusing media 63 fixed to the outside of the first spiral guide plate 47, and a power supply (not shown in the accompanying drawings of this application) fixed to the inner wall of the tank 1 and electrically connected to the first electromagnetic coil 62, which provides an adjustable current to the first electromagnetic coil 62 to control the magnetic field strength, and the power supply is an AC power supply or a pulse power supply.

[0049] By employing the above technical solution, the uniform magnetic field generated by the first electromagnetic coil 62 penetrates the non-magnetic hollow cylinder 45 (the hollow cylinder 45 is made of non-magnetic stainless steel, such as 316L). When it encounters the first magnetic concentrating medium 63 (magnetic stainless steel fiber, such as 430 stainless steel wire mesh) inside, the magnetic field lines will be highly distorted, forming a high-gradient magnetic field. When the oil slurry flows through the first spiral guide plate 47, the fine catalyst dust, under the action of the magnetic field force, moves towards the surface of the first magnetic concentrating medium 63 and attracts each other, rapidly agglomerating from micron-sized particles into large particles of tens of microns. At the same time, the centrifugal force generated by the rotation of the first spiral guide plate 47 will also throw these agglomerated large particles outward, preventing them from directly impacting the surface of the filter element 46, significantly reducing the interception pressure of the filter element 46, and making the pressure difference and processing throughput more stable.

[0050] like Figure 1 , Figure 2 , Figures 5 to 7 , Figure 9As shown, it also includes an annular settling assembly 7, which includes a collection cylinder 71 fixed to the outside of the hollow cylinder 45, a feed chamber opened inside the collection cylinder 71 and a collection chamber 76 connected to the feed chamber, an escape port 451 opened outside the hollow cylinder 45 and connecting the internal cavity of the hollow cylinder 45 to the feed chamber, a drain port opened outside the collection cylinder 71 and connected to the collection chamber 76, and a discharge pipe 77 with one end fixed to the discharge port, the other end of the discharge pipe 77 penetrating the tank 1 and extending outward.

[0051] The outer side of the collecting cylinder 71 is fixedly connected to a second heat insulation member 74, and the outer side of the second heat insulation member 74 is fixedly connected to a second electromagnetic coil 75 (the second electromagnetic coil 75 is also connected to a power source fixed to the inner wall of the tank 1 to provide an adjustable current to the second electromagnetic coil 75 to control the magnetic field strength). The inner wall of the feeding chamber is rotatably connected to a second driven rotor 72, and a second spiral guide vane 73 is fixedly connected to one side of the second driven rotor 72. A plurality of second magnetic focusing media 731 are fixedly connected to the outer surface of the second spiral guide vane 73.

[0052] The lower end of the upper partition 41 is rotatably connected to a second gear 59 and a third gear 58 meshing with the second gear 59. The lower end of the second gear 59 is fixedly connected to a second drive rotor 591. The lower end of the second gear 54 is fixedly connected to a drive shaft 57. The other end of the drive shaft 57 passes through the interior of the lower partition 43 and is connected to the first gear 53. The other end of the drive shaft 57 is rotatably connected in the lower partition 43. The inner wall of the tank 1 is also fixedly connected to a support base 11, and the support base 11 is located in the cavity between the upper partition 41 and the lower partition 43. The drive shaft 57 is rotatably connected inside the support base 11.

[0053] By adopting the above technical solution, the large particle agglomerates thrown out by the rotation of the first spiral guide vane 47 will approach the inner wall area of ​​the hollow cylinder 45. The agglomerates in the inner wall area will be discharged together with the catalytic slurry through the escape port 451 and enter the collection cylinder 71. In order to ensure that most of the slurry can pass through the filter element instead of flowing directly from the escape port 451, a flow limiting orifice plate (not shown in the figure) is provided at the escape port 451 to maintain the pressure inside the hollow cylinder 45 higher than that in the collection cylinder 71. This ensures that only the high-concentration particle group thrown towards the inner wall by centrifugal force is discharged through the escape port 451 under the action of pressure difference, while the main liquid flow still passes through the filter element 46 for filtration. The rotation of the first gear 53 can drive the third gear 58 to rotate through the transmission shaft 57. The rotation of the third gear 58 drives the second gear disk 59 to rotate. The rotation of the second gear disk 59 drives the second active rotor 591 to rotate. The rotation of the second active rotor 591 drives the second driven rotor 72 and the second spiral guide vane 73 to rotate through magnetic force. At the same time, the second electromagnetic coil 75 generates uniformity. When the uniform magnetic field penetrates the non-magnetic collecting cylinder 71 (the material of the collecting cylinder 71 is non-magnetic stainless steel, such as 316L), and encounters the second magnetic concentrating medium 731 (magnetic stainless steel fiber, such as 430 stainless steel wire mesh) inside, the magnetic field lines will be highly distorted, forming a high-gradient magnetic field. When the oil slurry flows through the second spiral guide plate 73, the fine catalyst dust will approach the surface of the second magnetic concentrating medium 731 under the action of the magnetic field force and attract each other, rapidly agglomerating from micron-sized particles into large particles of tens of microns. At the same time, the centrifugal force generated by the rotation of the second spiral guide plate 73 will also throw these agglomerated large particles towards the inner wall area of ​​the collecting cylinder 71. The oil slurry in the inner wall area flows downward with the catalytic oil slurry into the collecting chamber 76, and finally is discharged from the discharge pipe 77. It should be noted that the discharge pipe is equipped with a flow regulating valve or a back pressure valve. Most of the magnetic agglomerates in the hollow cylinder 45 are continuously removed, avoiding the problem that a large number of agglomerates may be broken up again and re-enter the circulation after accumulating at the edge of the magnetic field in the hollow cylinder 45.

[0054] Both the first heat insulation component 61 and the second heat insulation component 74 are aerogel heat insulation layers to prevent the coil from overheating.

[0055] like Figure 4 , Figure 7 , Figure 10 and Figure 11 As shown, a plurality of sheaths 472 are fixedly attached to the inner edge of the first spiral guide vane 47, and a plurality of magnetostrictive vibrating plates 471 are fixed in the plurality of sheaths 472 respectively. One end of the plurality of magnetostrictive vibrating plates 471 extends out from the sheaths 472 and extends toward the outer surface of the filter element 46.

[0056] The lower end of the upper partition 41 is provided with an insertion groove 414 that communicates with the discharge port 42. A sealing ring 411 is fixed on the inner wall of the insertion groove 414. The upper end of the filter element 46 is inserted into the insertion groove 414 and fits against the sealing ring 411. A sealing pressure ring 413 is also sleeved on the upper end of the filter element 46. The upper end of the sealing pressure ring 413 is fixedly connected to the lower end of the upper partition 41. An ultrasonic transducer ring 412 is also fixedly connected inside the upper partition 41. The ultrasonic transducer ring 412 is sleeved on the outside of the end of the filter element 46 that is inserted into the insertion groove 414. The ultrasonic transducer ring 412 is used to connect to the ultrasonic transducer.

[0057] By adopting the above technical solution, it should be noted that the function of the ultrasonic transducer ring 412 is to conduct ultrasonic waves rather than generate them. An ultrasonic transducer can be fixed outside the tank 1, and connected to the ultrasonic transducer ring 412 via a metal rod called a "waveguide rod." The metal rod penetrates through the tank 1 and the interior of the upper partition 41. The metal rod can be made of titanium alloy or stainless steel, transmitting ultrasonic mechanical vibrations to the internal ultrasonic transducer ring 412. The ultrasonic transducer ring 412 can transmit ultrasonic waves to the filter element 46, transmitting them through the upper end (fixed end) of the filter element 46 to the entire filter element 46. The overall vibration of the filter element 46 loosens the filter cake structure already formed on its surface, reducing its adhesion to the surface of the filter element 46, making it easier for it to be carried away by the mainstream shear force; ensuring more stable pressure differential and flow rate of the device.

[0058] Because this application is equipped with a first electromagnetic coil 62, the alternating or pulsed magnetic field provided by the first electromagnetic coil 62 causes the magnetostrictive vibrating plate 471 (a vibrating plate made of magnetostrictive material, such as 430 magnetic stainless steel, or other materials can be selected; the vibrating plate is set in the stainless steel sheath 472 by spot welding, bolting, embedding, etc., and the sheath 472 is welded to the blades of the first spiral guide plate 47) attached to the inner edge of the first spiral guide plate 47 to generate high-frequency micro-amplitude vibration, which can effectively destroy the magnetic linkage structure between magnetic particles, promote the flow of filter cake and lose adhesion. The rotating first spiral guide plate 47 performs macroscopic shearing, while the micro-vibration of the edge of the first spiral guide plate 47 is like countless "tiny hands" performing high-frequency, local scraping and disturbance on the surface of the filter element 46, which can more effectively prevent the initial adhesion of particles and the compaction of the bottom layer of filter cake.

[0059] This invention combines the macroscopic rotational shearing of the first spiral guide plate 47 with the microscopic high-frequency vibration of the magnetostrictive vibrating plate 471 to form a dual anti-clogging mechanism. The rotational shearing force removes the thick surface filter cake, while the high-frequency vibration generated by magnetostriction disrupts the bonding force between the bottom layer of the filter cake and the filter membrane, preventing the formation of dead filter cake.

[0060] Usage: The catalytic slurry to be purified enters the tank 1 through the feed end 2. Inside the tank 1, the slurry enters the hollow cylinder 45 through the feed port 44. Under pressure, the slurry passes through the filter element 46 from the outside to the inside, and the catalyst particles are intercepted on the outer surface of the filter element 46. The purified oil enters the filter element 46, flows through the discharge port 42, enters the chamber above the tank 1, and is finally discharged through the discharge end 3. Simultaneously, the rotor drive assembly 5 drives the first active rotor 56 to rotate, which in turn drives the first driven rotor 48 to rotate. The rotation of the first driven rotor 48 drives the first spiral guide vane 47 and the rotating ring 49 to rotate. When the first spiral guide vane 47 rotates, the shearing force generated by its rotation prevents the filter cake on the surface of the filter element 46 from forming a dense thick layer. Furthermore, the uniform magnetic field generated by the first electromagnetic coil 62 penetrates the non-magnetic hollow cylinder 45 (the hollow cylinder 45 is made of non-magnetic stainless steel, such as 316L). When it encounters the first magnetic concentrating medium 63 (magnetic stainless steel fiber, such as 430 stainless steel wire mesh), the magnetic field lines will be highly distorted, forming a high-gradient magnetic field. When the slurry flows through the first spiral guide vane 47, the fine catalyst dust, under the action of the magnetic field, moves towards the surface of the first magnetic concentrating medium 63 and attracts each other, rapidly agglomerating from micron-sized particles into large particles of tens of microns. At the same time, the centrifugal force generated by the rotation of the first spiral guide vane 47 will also throw these agglomerated large particles outward. The large particle agglomerates thrown out by the rotation of the first spiral guide vane 47 will approach the inner wall area of ​​the hollow cylinder 45, and the agglomerates in the inner wall area will be discharged together with the catalytic slurry through the escape port 451 and enter the collection cylinder 71. The rotation of the first gear 53 drives the third gear 58 via the transmission shaft 57. The rotation of the third gear 58 drives the second gear disk 59, which in turn drives the second active rotor 591. The rotation of the second active rotor 591, through magnetic force, drives the second driven rotor 72 and the second spiral guide vane 73 to rotate. Simultaneously, the uniform magnetic field generated by the second electromagnetic coil 75 penetrates the non-magnetic collecting cylinder 71 (made of non-magnetic stainless steel, such as 316L). When it encounters the internal second magnetic concentrating medium 731 (magnetic stainless steel fiber, such as 430 stainless steel wire mesh), the magnetic field lines become highly distorted, forming a high-gradient magnetic field. When the oil slurry flows through the second spiral guide vane 73, the fine catalyst dust, under the influence of the magnetic field, approaches and attracts each other towards the surface of the second magnetic concentrating medium 731, rapidly agglomerating from micron-sized particles into larger particles of tens of microns. At the same time, the centrifugal force generated by the rotation of the second spiral guide vane 73 also throws these agglomerated large particles towards the inner wall area of ​​the collecting cylinder 71. The slurry in the inner wall area flows downward with the catalytic slurry into the collection chamber 76, and is finally discharged from the discharge pipe 77.

[0061] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A purification device for catalytic oil slurry, comprising a tank (1), an inlet (2) and a outlet (3) respectively opened at both ends of the tank (1), characterized in that: The inner wall of the tank (1) is fixed with an upper partition (41) and a lower partition (43). The upper partition (41) has a discharge port (42) and the lower partition (43) has a feed port (44). The upper partition (41) and the lower partition (43) divide the tank (1) into three independent chambers, two of which are connected to the feed end (2) and the discharge end (3) respectively. A purification assembly is provided between the upper partition (41) and the lower partition (43), and the purification assembly includes a hollow cylinder (45) with its two ends fixed to the upper partition (41) and the lower partition (43) respectively, a filter element (46) fixed to the lower end of the upper partition (41) and located in the hollow cylinder (45), a rotating ring (49) rotatably connected to the lower end of the upper partition (41), a first driven rotor (48) rotatably connected to the upper end of the lower partition (43), and a first spiral guide vane (47) connecting the rotating ring (49) and the first driven rotor (48). It also includes a rotor drive assembly (5) disposed inside the tank (1) and used to drive the first driven rotor (48) to rotate. A sealing plate (21) is fixedly connected to one side of the feed end (2). The rotor drive assembly (5) includes a connecting seat (52) fixedly connected to the lower end of the lower partition plate (43), a first gear (53) rotatably connected inside the lower partition plate (43), a second gear (54) meshing with the first gear (53), a first gear disk (55) rotatably connected inside the lower partition plate (43) and meshing with the second gear (54), and a first active rotor (56) fixedly connected to the upper end of the first gear disk (55). The lower end of the connecting seat (52) is sealed to the upper end of the sealing plate (21), and a motor drive unit (51) is fixedly connected to the lower end of the sealing plate (21). The output shaft of the motor drive unit (51) passes through the sealing plate (21), the connecting seat (52), and the lower partition plate (43) and is connected to the first gear (53). The first spiral guide vane (47) is a non-equidistant spiral guide vane, and the pitch of the first spiral guide vane (47) gradually decreases from the lower end to the upper end; It also includes an annular settling assembly (7), and the annular settling assembly (7) includes a collection cylinder (71) fixed to the outside of the hollow cylinder (45), a feed chamber opened inside the collection cylinder (71), a collection chamber (76) connected to the feed chamber, an escape port (451) opened outside the hollow cylinder (45) and connected to the feed chamber inside the hollow cylinder (45), a drain port opened outside the collection cylinder (71) and connected to the collection chamber (76), and a discharge pipe (77) fixed to the drain port at one end, and the other end of the discharge pipe (77) penetrates the tank (1) and extends outward; The outer side of the collecting cylinder (71) is fixedly connected to a second heat insulation member (74), and the outer side of the second heat insulation member (74) is fixedly connected to a second electromagnetic coil (75). The inner wall of the feeding chamber is rotatably connected to a second driven rotor (72), and a second spiral guide vane (73) is fixedly connected to one side of the second driven rotor (72). A plurality of second magnetic media (731) are fixedly connected to the outer surface of the second spiral guide vane (73). The lower end of the upper partition (41) is rotatably connected to a second gear (59) and a third gear (58) meshing with the second gear (59). The lower end of the second gear (59) is fixedly connected to a second drive rotor (591). The lower end of the second gear (54) is fixedly connected to a drive shaft (57). The other end of the drive shaft (57) penetrates into the interior of the lower partition (43) and is connected to the first gear (53). The other end of the drive shaft (57) is rotatably connected in the lower partition (43). The inner wall of the tank (1) is also fixedly connected to a support seat (11). The support seat (11) is located in the cavity between the upper partition (41) and the lower partition (43). The drive shaft (57) is rotatably connected inside the support seat (11).

2. The purification device for catalytic oil slurry according to claim 1, characterized in that: The upper end of the lower partition (43) is fixed with a support guide (461), the lower end of the filter element (46) is fixed to the upper end of the support guide (461), and the cross section of the support guide (461) is conical.

3. The purification device for catalytic oil slurry according to claim 1, characterized in that: It also includes a magnetic field coordination component (6), which includes a first heat insulation component (61) fixed to the outer wall of the hollow cylinder (45), a first electromagnetic coil (62) fixed to the outside of the first heat insulation component (61), a plurality of first magnetic media (63) fixed to the outside of the first spiral guide plate (47), and a power supply fixed to the inner wall of the tank (1) and electrically connected to the first electromagnetic coil (62).

4. The purification device for catalytic oil slurry according to claim 1, characterized in that: Multiple sheaths (472) are fixed to the inner edge of the first spiral guide vane (47), and multiple magnetostrictive vibrating plates (471) are fixed inside the multiple sheaths (472). One end of the multiple magnetostrictive vibrating plates (471) extends out from inside the sheaths (472) and extends toward the outer surface of the filter element (46).

5. The purification device for catalytic oil slurry according to claim 4, characterized in that: The upper partition (41) has a insertion groove (414) at its lower end that communicates with the discharge port (42). A sealing ring (411) is fixed on the inner wall of the insertion groove (414). The upper end of the filter element (46) is inserted into the insertion groove (414) and fits against the sealing ring (411). A sealing pressure ring (413) is also sleeved on the upper end of the filter element (46). The upper end of the sealing pressure ring (413) is fixedly connected to the lower end of the upper partition (41). An ultrasonic transducer ring (412) is also fixedly connected inside the upper partition (41). The ultrasonic transducer ring (412) is sleeved on the outside of the end of the filter element (46) that is inserted into the insertion groove (414). The ultrasonic transducer ring (412) is used to connect with the ultrasonic transducer.

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