A waste catalyst deoiling system

Abstract

This utility model relates to the technical field of deoiling systems and provides a waste catalyst deoiling system. It includes a deoiling furnace, a slag remover, a bucket elevator, a screen, a hopper, and an economizer. The deoiling furnace includes a moving block and a grate. The grate is composed of a crossbeam and grate plates, with the grate plates evenly assembled on the crossbeam. The crossbeam is fixedly connected to the moving block, and pulleys are mounted on the moving block. The rotation of the pulleys causes displacement of the moving block and the grate. The slag remover and the bucket elevator cooperate to feed the material discharged from the slag remover into the screen. The discharge port of the screen connects to the inlet of the hopper. The flue gas outlet of the deoiling furnace is provided with a flue that connects to the economizer. This waste catalyst deoiling system can distribute the force on the grate through the moving block, reducing the grate deformation and lowering the possibility of problems such as material leakage and chain slippage.

Description

Technical Field

[0001] This utility model relates to the field of oil removal system technology, and in particular to an oil removal system for waste catalysts. Background Technology

[0002] Catalysts facilitate chemical reactions and are therefore widely used in the chemical industry. Since catalysts themselves do not participate in the chemical reaction, they can be fully recovered after the reaction has occurred. The role of the spent catalyst deoiling system is to remove oil from spent catalysts, forming a crucial part of the catalyst recovery process.

[0003] In existing technologies, coal-fired boilers are commonly used in waste catalyst deoiling systems to evaporate the oil at high temperatures. The existing grates primarily move by the mutual pushing and pulling of the grate bars. Since the grate bars are made of metal, they soften when heated, and the interaction forces during the pushing and pulling process cause problems such as material leakage and chain detachment. Utility Model Content

[0004] The purpose of this invention is to provide a waste catalyst deoiling system that can reduce the deformation of the grate by distributing the force on the grate through a moving block, thereby reducing the possibility of problems such as material leakage and chain detachment from the grate.

[0005] This utility model provides a waste catalyst deoiling system, comprising:

[0006] An oil removal furnace, comprising a movable block and a grate, wherein the grate is composed of a crossbeam and grate plates, and the grate plates are evenly assembled on the crossbeam. The crossbeam is fixedly connected to the movable block, and the movable block is equipped with pulleys. The rotation of the pulleys causes the movable block and the grate to move.

[0007] A slag discharger and a bucket elevator, wherein the inlet of the slag discharger is connected to the outlet of the deoiling furnace, and the outlet of the slag discharger is connected to the bucket elevator;

[0008] The sieve and the hopper are connected together. The inlet of the sieve is connected in series with the outlet of the bucket elevator. The sieve also includes a discharge port, an outlet and a screen. The discharge port and the outlet are located on both sides of the screen. The inlet and the discharge port of the sieve are located on the same side of the screen. The outlet is connected to the inlet of the hopper.

[0009] An economizer is provided, wherein a flue is connected in series at the flue outlet of the oil removal furnace, and the other end of the flue is connected to the economizer.

[0010] The technical solution of this utility model uses a moving block and a crossbeam to support the grate bars. The crossbeam provides good support for the grate bars, reducing their deformation when bearing heavy loads. The moving block drives the grate to move laterally, further reducing deformation during movement. Reduced grate bar deformation reduces the possibility of material leakage and chain slippage, and also extends the grate's service life. Meanwhile, the slag remover and bucket elevator can quickly collect and transport solids, while the sieve and hopper solve the problem of collecting and classifying solids. Finally, the economizer cools the flue gas, reduces its oil content, and also provides insulation to prevent oily substances from solidifying and causing blockages. Attached Figure Description

[0011] 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.

[0012] Figure 1 This is an assembly drawing of a waste catalyst deoiling system according to the present invention;

[0013] Figure 2 for Figure 1 Left view of the medium-waste catalyst deoiling system.

[0014] Explanation of reference numerals in the attached figures:

[0015] 1. Oil removal furnace; 11. First water jacket; 12. Second water jacket; 13. Feed chute; 14. Moving block; 15. Grate; 2. Slag remover; 21. Motor; 22. Third water jacket; 23. Chain; 24. First air intake; 3. Bucket elevator; 31. Second air intake; 4. Screen; 41. Third air intake; 42. Top cover; 43. Discharge port; 44. Outlet; 5. Bin; 51. Level gauge; 52. Fourth air intake; 6. Bin pump; 7. Flue; 8. Economizer; 81. Air inlet; 82. Air outlet; 83. Upper tube sheet; 84. Lower tube sheet; 85. Heat exchanger tubes; 86. Outer shell. Detailed Implementation

[0016] 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.

[0017] 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.

[0018] 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.

[0019] Combination Figures 1 to 2 As shown, the waste catalyst deoiling system provided by this utility model includes a deoiling furnace 1, a slag discharger 2, a bucket elevator 3, a screen 4, a silo 5, and an economizer 8.

[0020] Combination Figures 1 to 2 As shown, the deoiling furnace 1 includes a movable block 14 and a grate 15. The grate 15 is composed of a crossbeam and grate plates, with the grate plates evenly assembled on the crossbeam. The crossbeam is fixedly connected to the movable block 14. The movable block 14 is equipped with pulleys, and the rotation of the pulleys causes the movable block 14 and the grate 15 to move. The inlet of the slag remover 2 is connected to the outlet of the deoiling furnace 1, and the outlet of the slag remover 2 is connected to the bucket elevator 3. The inlet of the screen 4 is connected in series with the outlet of the bucket elevator 3. The screen 4 also includes a discharge port 43, a discharge port 44, and a screen. The discharge port 43 and the discharge port 44 are located on both sides of the screen, and the inlet and discharge port 43 of the screen 4 are located on the same side of the screen. The discharge port 44 is connected to the inlet of the silo 5. The flue gas outlet of the deoiling furnace 1 is connected in series with a flue 7, and the other end of the flue 7 is connected to the economizer 8.

[0021] The technical solution of this utility model uses a moving block 14 and a crossbeam to support the grate bars. The crossbeam provides good support for the grate bars, reducing their deformation when bearing heavy loads. The moving block 14 drives the grate 15 to move laterally, reducing the deformation of the grate bars during movement. The reduced deformation of the grate bars reduces the possibility of material leakage and chain slippage in the grate 15, and also extends the service life of the grate 15. Meanwhile, the slag discharger 2 and the bucket elevator 3 can quickly collect and transport solids. The sieve 4 and the hopper 5 solve the problem of collecting and classifying solids. Finally, the economizer 8 cools the flue gas, reduces its oil content, and also provides insulation to prevent oily substances from solidifying and causing blockages.

[0022] In this embodiment, the waste catalyst in the hopper of the deoiling furnace 1 feeds the grate 15. The waste catalyst in the deoiling furnace 1 moves from front to back on the grate 15, and the flue gas burns on the grate 15. The flue gas rises in the deoiling furnace 1 and enters the upper channel of the furnace body through the riser hole. This channel is surrounded by water-cooled pipes. It returns from the upper channel to the upper front of the furnace body and enters the flue 7 from the upper layer. The grate 15 is a crossbeam grate, that is, the grate plates are fixed on a crossbeam of similar width inside the furnace body. The grate plates can slide on the crossbeam. The crossbeam is fixed to the moving block 14 by screws. The moving block includes an upper plate and two side plates. The lower part of the moving block 14 has wheels. The moving block has two rows of parallel holes through which two axles can pass. The axles are used to install the wheels. The wheels roll and rub against the grate support rail. The grate support rail is the track for the moving block 14 to move, and also plays a role in positioning and limiting. The moving block is usually a cast structure. The deoiling furnace 1 has first water jackets 11 on both sides of the hopper, and a second water jacket 12 at the bottom of the feed gate. The first water jackets 11 on both sides of the hopper and the second water jackets 12 on the feed gate are connected in series. The water jackets are cooled by water from the deoiling furnace water tank and the water returns to the water tank. The deoiling furnace 1 has a discharge chute 13 at the bottom. The discharge chute 13 is wider at the top and narrower at the bottom. The upper width of the discharge chute 13 is the same as the width of the outer shell of the deoiling furnace 1, and the lower width of the discharge chute 13 is the same as the width of the slag discharger 2. The length of the discharge chute 13 extends through the entire length of the boiler except for the load-bearing area. The discharge chute 13 is made of high-temperature resistant metal material. Temperature sensors and pressure sensors are installed on the furnace chamber of the deoiling furnace 1 to detect the working status of the deoiling furnace 1.

[0023] The slag discharger 2 adopts a fully sealed structure and is connected to the discharge chute 13 via a flange. The outer shell of the slag discharger 2 consists of a horizontal section and an inclined section, with the angle between the horizontal and inclined sections being less than or equal to 30 degrees. A third water jacket 22 may also be designed on the outer shell of the slag discharger 2. The chain 23 inside the slag discharger 2 is a heavy-duty mining chain, with each chain block having two branches, each branch having protruding left and right side plates. The lower part of the chain block is thick in the vertical direction, and the width of the lower part is just enough to fit the upper part of the next chain block with a slight gap. The chain block has two rows of holes for interconnection between two chain blocks, and several such chain blocks form a set of ring chain 23. The motor 21 is installed above the ground to drive the chain 23. A first air intake 24 is opened on the top of the outer shell of the slag discharger 2 near the bucket elevator 3.

[0024] The top of the bucket elevator 3 is provided with a second air intake 31.

[0025] The aforementioned sieve 4 has two discharge ports: a lower discharge port 44 located at the bottom of the sieve, and a discharge port 43 located at the tail end of the lower side of the sieve. The lower discharge port 44 discharges qualified material, while the discharge port 43 is used to discharge ceramic balls, sintered blocks, etc. The discharge port 43 is connected to the ground near the ground via a chute. The sieve 4 has a sealed structure with an upper cover 42 to achieve a top seal. The upper cover 42 has an observation port and is a detachable structure. The upper part of the sieve has a third air intake port 41, which is located on the upper cover 42 and close to the outlet of the aforementioned bucket elevator 3.

[0026] The upper half of the hopper 5 is cylindrical and the lower half is funnel-shaped. A level gauge 51 is installed on the hopper 5. The level gauge 51 is a radio frequency admittance level gauge. The structure of the radio frequency admittance level gauge is divided into two parts: a main electrode and a compensation electrode. One electrode is located on the outer wall of the upper cylindrical section of the hopper 5, and the other electrode is located on the outer wall of the lower funnel section of the hopper 5. The upper part of the hopper 4 is equipped with a fourth air intake 52.

[0027] The silo pump 6 is a conveying device that needs to withstand temperatures above 400 degrees Celsius. The silo pump 6 is used to transport the material collected in the silo 5 to the subsequent work station for catalyst recovery.

[0028] The economizer 8 includes a shell 86, heat exchange tubes 85, and tube sheets 83 and 84.

[0029] The economizer 8 is a non-pressure vessel. The heat exchange tube 85 is placed perpendicular to the ground and has a diameter of 133 mm. The heat exchange tube 85 is welded between the upper tube sheet 83 and the lower tube sheet 84. The thickness of the upper tube sheet 83 and the lower tube sheet 84 is 12 mm. The air inlet 81 is located on the upper side of the economizer 8 and is opened on the side wall of the upper tube sheet 83. The air outlet 82 is located on the lower side of the economizer 8 and is opened on the side wall of the lower tube sheet 84.

[0030] The outer shell 86 completely covers all the heat exchange tubes 85 from the outside, and the upper and lower edges are sealed to connect the upper tube sheet 83 and the lower tube sheet 84. Flue gas flows inside the heat exchange tubes 85, and water flows in the cavity between the heat exchange tubes 85 and the outer shell 86 to exchange heat with the flue gas inside the heat exchange tubes 85 and reduce the flue gas temperature. The cooling water used comes from the deoiling furnace water tank and returns to the deoiling furnace water tank after absorbing the heat from the flue gas. The flue gas mentioned above is introduced from the deoiling furnace 1 through the flue 7.

[0031] 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 waste catalyst deoiling system, characterized in that, include: The deoiling furnace (1) includes a movable block (14) and a grate (15). The grate (15) is composed of a crossbeam and grate plates, and the grate plates are evenly assembled on the crossbeam. The crossbeam is fixedly connected to the movable block (14). The movable block (14) is equipped with pulleys. The rotation of the pulleys causes the movable block (14) and the grate (15) to move. The slag discharger (2) and the bucket elevator (3) are provided. The inlet of the slag discharger (2) is connected to the outlet of the deoiling furnace (1), and the outlet of the slag discharger (2) is connected to the bucket elevator (3). The sieve (4) and the hopper (5) are connected in series with the outlet of the bucket elevator (3). The sieve (4) also includes a discharge port (43), an outlet (44) and a screen. The discharge port (43) and the outlet (44) are located on both sides of the screen. The inlet of the sieve (4) and the discharge port (43) are located on the same side of the screen. The outlet (44) is connected to the inlet of the hopper (5). Economizer (8), the smoke outlet of the oil removal furnace (1) is connected in series with a flue (7), and the other end of the flue (7) is connected to the economizer (8).

2. The waste catalyst deoiling system according to claim 1, characterized in that, The lower part of the deoiling furnace (1) is provided with a feeding chute (13). The feeding chute (13) is wider at the top and narrower at the bottom. The upper width of the feeding chute (13) is equal to the outer shell width of the deoiling furnace (1), and the lower width of the feeding chute (13) is equal to the width of the slag discharger (2). The material discharged from the deoiling furnace (1) is guided by the feeding chute (13) and falls into the slag discharger (2).

3. The waste catalyst deoiling system according to claim 1, characterized in that, The slag discharge machine (2) includes a motor (21) and a chain (23). The drive end of the motor (21) is connected to the chain (23). The chain (23) includes a horizontal section and an inclined section, and the inclination angle of the inclined section is no more than 30 degrees. The outer shell of the slag discharge machine (2) completely covers the chain (23).

4. The waste catalyst deoiling system according to claim 1, characterized in that, A level gauge (51) is fixedly mounted on the hopper (5). The level gauge (51) is a radio frequency admittance level gauge, and the two electrodes of the level gauge (51) are distributed vertically.

5. The waste catalyst deoiling system according to claim 1, characterized in that, It also includes a silo pump (6), and the bottom plate of the silo (5) is integrally formed with a funnel-shaped discharge port, and the discharge port of the silo (5) is connected to the inlet of the silo pump (6).

6. The waste catalyst deoiling system according to claim 1, characterized in that, The economizer (8) includes an air inlet (81), an air outlet (82), an upper tube sheet (83), a lower tube sheet (84), heat exchange tubes (85), and a shell (86). The air inlet (81) is connected to the upper tube sheet (83), and the air outlet (82) is connected to the lower tube sheet (84). The heat exchange tubes (85) are vertically arranged. The upper tube sheet (83) and the lower tube sheet (84) are distributed vertically. The heat exchange tubes (85) are evenly distributed between the upper tube sheet (83) and the lower tube sheet (84), and the upper and lower ends of the heat exchange tubes (85) are connected to the upper tube sheet (83) and the lower tube sheet (84), respectively. The shell (86) seals and covers all the heat exchange tubes (85).

7. The waste catalyst deoiling system according to claim 6, characterized in that, The heat exchange tube (85) has a diameter of 133 mm, and the wall thickness of the upper tube sheet (83) and the lower tube sheet (84) is not less than 12 mm.

8. The waste catalyst deoiling system according to claim 6, characterized in that, It also includes a circulating water circuit, which includes a water tank, a first water jacket (11) and a second water jacket (12). The first water jacket (11) is fixedly mounted on the side wall of the hopper of the deoiling furnace (1), and the second water jacket (12) is fixedly mounted on the lower part of the feed gate of the deoiling furnace (1). The first water jacket (11) and the second water jacket (12) are both connected in series with the water tank.

9. The waste catalyst deoiling system according to claim 8, characterized in that, The water tank is also connected in series with the economizer (8), and the cavity between the heat exchange tube (85) and the outer shell (86) is connected to the water tank.

10. The waste catalyst deoiling system according to claim 1, characterized in that, It also includes a ventilation system, which includes a first air intake (24), a second air intake (31), a third air intake (41) and a fourth air intake (52). The first air intake (24) is located on the top of the shell of the slag discharger (2) near the bucket elevator (3). The second air intake (31) is located on the top of the bucket elevator (3). The third air intake (41) is located on the top of the screen (4) near the bucket elevator (3). The fourth air intake (52) is located on the top of the silo (5).

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