Feeding system of deoiling furnace

Abstract

The utility model relates to the technical field of material conveying, in particular to a feeding system of a deoiling furnace. The utility model provides a deoiling furnace feeding system which comprises a storage hopper, an opening and closing assembly is arranged at a discharging port of the storage hopper and used for adjusting the opening degree of the discharging port of the storage hopper, a filtering device is arranged below the discharging port of the storage hopper, a screen assembly is arranged on the filtering device and comprises a third-layer screen, and a second-layer screen is arranged on the third-layer screen. A plurality of rectangular holes with preset sizes are formed in the bottom face of the third-layer screen, a fourth discharging opening is formed in the filtering device, the bottom face of the third-layer screen is connected with the conveying device through the fourth discharging opening, and the conveying device is connected with the distributing device. According to the deoiling furnace, the problems that the granularity of deoiling materials at an outlet of the deoiling furnace is large due to coking blocks in materials and fire grate segments of the deoiling furnace are easily damaged due to porcelain balls in the materials are solved.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, and in particular to a feeding system for an oil removal furnace. Background Technology

[0002] Waste catalysts from residual oil hydrotreating typically contain various valuable metals, such as molybdenum, tungsten, nickel, cobalt, and vanadium, which have high economic value. At the same time, they often contain harmful substances such as heavy metals and sulfides. Therefore, the treatment and recycling of waste catalysts from residual oil hydrotreating is of significant economic and environmental importance.

[0003] Currently, most spent catalysts from residual oil hydrotreating are processed using deoiling furnaces, typically fed directly into the furnace via a bucket elevator. However, directly feeding spent catalysts into the deoiling furnace results in coking lumps that cause large particle sizes in the deoiled material at the furnace outlet, preventing it from directly entering the next process. Furthermore, the ceramic balls within the catalyst can easily damage the grate bars of the deoiling furnace.

[0004] How to provide a feeding system for an oil removal furnace that reduces the particle size of the oil removal material at the furnace outlet and prevents ceramic balls from damaging the grate is a technical problem that urgently needs to be solved. Utility Model Content

[0005] This utility model provides a feeding system for an oil removal furnace, which solves the problems of large particle size of the oil removal material at the outlet of the oil removal furnace caused by coking lumps and damage to the grate plates of the oil removal furnace caused by ceramic balls.

[0006] This utility model provides a feeding system for an oil removal furnace, comprising: a storage hopper, wherein the outlet of the storage hopper is provided with an opening and closing component, the opening and closing component being used to adjust the opening and closing degree of the outlet of the storage hopper; a filtering device is provided below the outlet of the storage hopper; a screen assembly is provided on the filtering device; the screen assembly includes a third screen; the bottom surface of the third screen has multiple rectangular holes of a preset size; a fourth discharge port is provided on the filtering device; the bottom surface of the third screen is connected to a conveying device through the fourth discharge port; and the conveying device is connected to a material distributor.

[0007] In one possible implementation, the screen assembly further includes a first screen and a second screen. The bottom surface of the first screen has a plurality of evenly arranged circular holes with a diameter of 20 mm, the bottom surface of the second screen has a plurality of evenly arranged circular holes with a diameter of 5 mm, and the bottom surface of the third screen has a preset size of 3 mm * 10 mm for the rectangular holes.

[0008] In one possible implementation, the filter device is further provided with a first discharge port, a second discharge port and a third discharge port, wherein the first discharge port is connected to the side wall of the first layer of screen, the second discharge port is connected to the side wall of the second layer of screen, and the third discharge port is connected to the side wall of the third layer of screen.

[0009] In one feasible embodiment, the material distributor is a three-way pipe, which includes an upper main pipe, a first lower branch pipe, and a second lower branch pipe. The top surface of the upper main pipe has a beveled surface, and the angle between the beveled surface and the through direction of the upper main pipe is 60 degrees. The first lower branch pipe and the second lower branch pipe are welded to the lower end of the upper main pipe.

[0010] In one possible implementation, the conveying device includes a hoist for conveying the material discharged from the fourth discharge port to the material distributor.

[0011] In one possible implementation, a sealing seat is provided at the bottom of the hoist.

[0012] In one possible implementation, the conveying device further includes a conveyor for transferring the material conveyed by the elevator to the fabric distributor.

[0013] In one possible implementation, the conveyor is provided with a sealing cover and a sealing strip, which are used to prevent leakage of the material.

[0014] In one possible implementation, the storage hopper is provided with a drive component and a storage support, the drive component is used to control the opening and closing assembly, and the storage support is used to support the storage hopper.

[0015] In one possible implementation, a support frame is provided below the conveyor, and the height of the support frame is adjustable.

[0016] The beneficial effects of this invention are as follows: First, the opening and closing assembly controls the discharge of material from the storage hopper towards its outlet. Then, the material passes through a filtering device and then through the third sieve on the screen assembly, removing coke lumps and ceramic balls. Next, the material is transferred to a conveying device through a fourth discharge port, which transports the material to a distributor. Finally, the distributor conveys the material to the feed hopper of the deoiling furnace. This invention solves the problems of coke lumps in the material causing large particle size of the deoiled material at the deoiling furnace outlet and ceramic balls in the material easily damaging the grate plates of the deoiling furnace. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a front view of a feeding system for an oil removal furnace according to this utility model;

[0019] Figure 2 This is a front view of the material storage hopper and filter device of the oil removal furnace feeding system according to this utility model;

[0020] Figure 3 This is an enlarged view of area A of the oil removal furnace feeding system of this utility model;

[0021] Figure 4 This is a top view of the first layer screen of the oil removal furnace feeding system of this utility model;

[0022] Figure 5 This is a top view of the second layer screen of the oil removal furnace feeding system of this utility model;

[0023] Figure 6 This is a top view of the third layer screen of the oil removal furnace feeding system of this utility model;

[0024] Figure 7 This is a perspective view of a material distributor for an oil removal furnace feeding system according to this utility model;

[0025] Figure 8 This is a side view of the feeding system of an oil-removing furnace according to the present invention, showing the cooperation between the feeder and the feed hopper of the oil-removing furnace.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Storage hopper; 2. Opening and closing assembly; 3. Filtering device; 4. Screen assembly; 401. First layer screen; 402. Second layer screen; 403. Third layer screen; 5. First discharge port; 6. Second discharge port; 7. Third discharge port; 8. Fourth discharge port; 9. Conveying device; 901. Elevator; 902. Conveyor; 10. Distributor; 1001. Upper main pipe; 1002. First lower branch pipe; 1003. Second lower branch pipe; 11. Inclined surface; 12. Sealing seat; 13. Sealing cover plate; 14. Sealing strip; 15. Driving component; 16. Storage bracket; 17. Support frame; 18. Oil removal furnace feed hopper; 19. Operating platform. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] See Figure 1 and Figure 8 This utility model provides a technical solution: an oil removal furnace feeding system, comprising: a storage hopper 1, an opening and closing component 2 for adjusting the opening and closing degree of the storage hopper 1's discharge port, a filter device 3 below the discharge port of the storage hopper 1, a screen assembly 4 on the filter device 3, the screen assembly 4 including a third layer screen 403, the bottom surface of the third layer screen 403 having multiple rectangular holes of preset size, a fourth discharge port 8 on the filter device 3, the bottom surface of the third layer screen 403 being connected to a conveying device 9 through the fourth discharge port 8, and the conveying device 9 being connected to a distributor 10.

[0032] Specifically, firstly, the operator controls the opening and closing component 2 to discharge the material in the storage hopper 1 towards its outlet. Then, the material passes through the filter device 3, and then through the third screen 403 on the screen assembly 4, removing coke lumps and ceramic balls. Next, the material is transferred to the conveyor device 9 through the fourth discharge port 8, which transports the material to the distributor 10. Finally, the distributor 10 conveys the material to the feed hopper of the deoiling furnace. Because the third screen 403 on the filter device 3 filters out coke lumps and ceramic balls from the material, the remaining material entering the feed hopper of the deoiling furnace will not result in large particle sizes in the deoiled material. The deoiled material can directly proceed to the next process, improving the treatment efficiency of the waste catalyst from the hydrogenation of residual oil. Furthermore, the grate plates in the deoiling furnace will not be impacted by the ceramic balls, thus protecting the deoiling furnace.

[0033] The opening and closing mechanism 2 can be manual, electric, or pneumatic. Preferably, the opening and closing mechanism 2 is a bar valve, a gate valve, or other valve suitable for conveying granular materials. The discharge port of the storage hopper 1 and the inlet of the filter device 3 are positioned correspondingly, but there is a gap between them, and they are not connected.

[0034] See Figure 3 , Figure 4 , Figure 5 and Figure 6 In some embodiments, the screen assembly 4 further includes a first screen 401 and a second screen 402. The bottom surface of the first screen 401 has a plurality of evenly arranged circular holes with a diameter of 20 mm. The bottom surface of the second screen 402 has a plurality of evenly arranged circular holes with a diameter of 5 mm. The bottom surface of the third screen 403 has a preset size of 3 mm * 10 mm for the rectangular holes.

[0035] The spent catalyst from the hydrotreating of residual oil contains coke lumps with a maximum size of 30mm-80mm, ceramic balls with a diameter of 16mm or more, and ceramic balls with a diameter of 5mm or more. The remaining particles are 1mm in diameter and 3mm in length. In production, only the 1mm diameter and 3mm length particles can enter the deoiling furnace; the rest need to be discarded. The material is filtered by filter device 3, which filters and removes the coke lumps and ceramic balls, while retaining the 1mm diameter and 3mm length particles. This also sorts the coke lumps and ceramic balls for subsequent processing. It should be noted that filter device 3 is preferably a vibrating screen, drum screen, or gyratory screen.

[0036] See Figure 3 In some embodiments, the filter device 3 is further provided with a first discharge port 5, a second discharge port 6 and a third discharge port 7. The first discharge port 6 is connected to the side wall of the first layer screen 401, the second discharge port 6 is connected to the side wall of the second layer screen 402, and the third discharge port 7 is connected to the side wall of the third layer screen 403.

[0037] Specifically, after being vibrated by the vibrating screen, the material passes through the screen assembly 4. The first discharge port 5 is used to discharge coking blocks with the longest dimension of 30 mm - 80 mm, the second discharge port 6 is used to discharge porcelain balls with a diameter greater than or equal to 16 mm, the third discharge port 7 is used to discharge porcelain balls with a diameter greater than or equal to 5 mm, and the fourth discharge port 8 is used to discharge particles with a diameter of 1 mm and a length of 3 mm. It should be noted that the first discharge port 5, the second discharge port 6, and the third discharge port 7 are respectively connected with aggregate bins, and the aggregate bins are used to store the filtered materials.

[0038] Refer to Figure 7 , in some embodiments, the distributor 10 is a three-way pipe. The distributor 10 includes an upper main pipe 1001, a first lower branch pipe 1002, and a second lower branch pipe 1003. The top surface of the upper main pipe 1001 has an inclined surface 11, and the included angle between the inclined surface 11 and the through direction of the upper main pipe 1001 is 60 degrees. The first lower branch pipe 1002 and the second lower branch pipe 1003 are arranged at the lower end of the upper main pipe 1001 by welding.

[0039] Among them, directly pouring the residue hydrotreating spent catalyst into the deoiling furnace feed bin 18 by the conventional bucket conveyor 902 will cause uneven distribution of the residue hydrotreating spent catalyst in the grate of the deoiling furnace, with a large difference in the ablation rate between the thin and thick parts, affecting the subsequent process. After adding the distributor 10, the residue hydrotreating spent catalyst enters from the upper main pipe 1001, flows through the first lower branch pipe 1002 and the second lower branch pipe 1003 respectively, and then enters the deoiling furnace feed bin 18. Furthermore, it reduces the thickness deviation of the material falling on the grate of the deoiling furnace, so that the grate of the deoiling furnace can burn it. An operation platform 19 is arranged above the installation position of the distributor 10, and the operation platform 19 is used for arranging the pyrotechnic pipe.

[0040] In some embodiments, the conveying device 9 includes a hoist 901, and the hoist 901 is used to convey the material discharged from the fourth discharge port 8 to the distributor 10. Further, a sealing seat 12 is arranged at the bottom of the hoist 901.

[0041] Among them, the installation pit at the bottom of the hoist 901 is lined with steel plates, brickwork or cement masonry to effectively prevent the leakage of materials, and the setting of the sealing seat 12 can further prevent the leakage of material dust. Preferably, the hoist 901 adopts a bucket elevator 901, and the model is NE series bucket elevator 901.

[0042] In some embodiments, the conveying device 9 further includes a conveyor 902, and the conveyor 902 is used to transfer the material conveyed by the hoist 901 to the distributor 10. Further, a sealing cover plate 13 and a sealing rubber strip 14 are arranged on the conveyor 902, and the sealing cover plate 13 and the sealing rubber strip 14 are used to prevent the leakage of materials. A support frame 17 is arranged below the conveyor 902, and the height of the support frame 17 is adjustable.

[0043] Both the sealing cover plate 13 and the sealing strip 14 are made of rubber, preferably oil-resistant rubber. Preferably, the conveyor 902 is a scraper conveyor 902, specifically an FU series scraper conveyor 902.

[0044] See Figure 2 In some embodiments, the storage hopper 1 is provided with a drive component 15 and a storage support 16. The drive component 15 is used to control the opening and closing component 2, and the storage support 16 is used to support the storage hopper 1.

[0045] The height of the storage hopper 1 supported by the storage bracket shall not exceed the maximum working height of the zero-load loader. The drive unit 15 can control the opening and closing degree of the bar valve, and the drive unit 15 is preferably an electric hydraulic press.

[0046] Work process

[0047] First, workers use a forklift to load the spent hydrogenation catalyst from the residual oil into storage hopper 1. They then operate an electric hydraulic press to control the opening and closing of the bar valve. The spent hydrogenation catalyst is discharged from the outlet of storage hopper 1 and enters the inlet of a vibrating screen. After being vibrated by the vibrating screen and filtered by the screen assembly 4, the first discharge port 5 discharges coke lumps with a maximum size of 30mm-80mm, the second discharge port 6 discharges ceramic balls with a diameter of 16mm or more, and the third discharge port 7 discharges ceramic balls with a diameter of 5mm or more. The discharged coke lumps and ceramic balls enter the collection box respectively. Secondly, particles with a diameter of 1mm and a length of 3mm discharged from the fourth discharge port 8 enter the feed port of the bucket elevator 901. The bucket elevator 901 conveys the particles vertically upwards. The particles pass through the discharge port of the bucket elevator 901 and enter the scraper conveyor 902. The scraper conveyor 902 conveys the particles horizontally to the distributor 10. After passing through the upper main pipe 1001, the particles flow through the first lower branch pipe 1002 and the second lower branch pipe 1003 respectively. Finally, the particles are evenly fed into the oil removal furnace feed hopper 18.

[0048] In the above embodiments, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A feeding system for an oil removal furnace, characterized in that, include: The storage hopper has an opening and closing component at its outlet, which is used to adjust the opening degree of the outlet. A filter device is provided below the outlet of the storage hopper, and a screen assembly is provided on the filter device. The screen assembly includes a third screen, the bottom surface of which has multiple rectangular holes of a preset size. A fourth discharge port is provided on the filter device, and the bottom surface of the third screen is connected to a conveying device through the fourth discharge port. The conveying device is connected to a material distributor.

2. The oil removal furnace feeding system according to claim 1, characterized in that, The screen assembly also includes a first screen and a second screen. The bottom surface of the first screen has a plurality of evenly arranged circular holes with a diameter of 20 mm. The bottom surface of the second screen has a plurality of evenly arranged circular holes with a diameter of 5 mm. The bottom surface of the third screen has a preset size of 3 mm * 10 mm for the rectangular holes.

3. The oil extraction furnace feeding system according to claim 2, characterized in that, The filtration device is also provided with a first discharge port, a second discharge port and a third discharge port. The first discharge port is connected to the side wall of the first layer of screen, the second discharge port is connected to the side wall of the second layer of screen, and the third discharge port is connected to the side wall of the third layer of screen.

4. The oil removal furnace feeding system according to claim 3, characterized in that, The material distributor is a three-way pipe, which includes an upper main pipe, a first lower branch pipe, and a second lower branch pipe. The top surface of the upper main pipe has a beveled surface, and the angle between the beveled surface and the through direction of the upper main pipe is 60 degrees. The first lower branch pipe and the second lower branch pipe are welded to the lower end of the upper main pipe.

5. The oil removal furnace feeding system according to claim 4, characterized in that, The conveying device includes a hoist, which is used to convey the material discharged from the fourth discharge port to the material distributor.

6. The oil removal furnace feeding system according to claim 5, characterized in that, A sealing seat is provided at the bottom of the elevator.

7. The oil removal furnace feeding system according to claim 6, characterized in that, The conveying device further includes a conveyor for transferring the material conveyed by the elevator to the material distributor.

8. The oil removal furnace feeding system according to claim 7, characterized in that, The conveyor is equipped with a sealing cover and a sealing strip, which are used to prevent the material from leaking.

9. The oil removal furnace feeding system according to claim 8, characterized in that, The storage hopper is equipped with a drive component and a storage bracket. The drive component is used to control the opening and closing assembly, and the storage bracket is used to support the storage hopper.

10. The oil removal furnace feeding system according to claim 9, characterized in that, A support frame is installed below the conveyor, and the height of the support frame is adjustable.

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