Catalyst filling device for ammonia synthesis equipment
By designing a catalyst loading device including a loading funnel, a conical lower hopper, a spray joint and a buffer funnel, the problem of slow loading speed and poor quality of the ammonia synthesis device in the prior art is solved, and uniform laying of the catalyst and stable operation of the synthesis tower are achieved.
Patent Information
- Application Number
- CN202421492601.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing ammonia synthesis device catalyst loading methods are slow and have a long construction period. They are greatly affected by environmental factors, have poor loading quality, and the catalyst is prone to damage, resulting in increased resistance to the synthesis tower and shift of the catalyst hot spots.
A catalyst loading device including a loading funnel, a conical lower hopper, a spray joint and a buffer funnel is designed. Through uniform spraying of the spray joint and the buffering effect of the buffer funnel, the catalyst is uniformly laid and reduced crushing.
The speed and quality of catalyst loading are improved, the crushing and damage of the catalyst is reduced, and the uniform bulk density and stable operation of the catalyst in the synthesis tower are ensured.
Smart Images
Figure CN222989268U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ammonia synthesis catalyst loading, in particular to a catalyst loading device for ammonia synthesis equipment. Background Art
[0002] In the catalyst loading methods at home and abroad, most of them use the method of manual paving and tamping for loading. In recent years, the production capacity of ammonia synthesis devices has been increasing continuously, and the loading amount of synthesis tower catalysts has been increasing continuously, while the loading scheme still continues the original method. The speed is slow, the construction period is long, and it is affected by many environmental factors. During the loading process, catalyst powder is continuously generated and cannot be removed, which causes great harm to the bodies of loading personnel. In the original scheme, the catalyst is packed in a steel barrel, and the catalyst is flowed from the 30m-high tower top to the tower bottom by using a cloth bag or a steel braided hose for loading, and it depends on personnel to move the cloth bag or hose to spread the catalyst. The loading quality depends on the ability of personnel, and the catalyst loading quality cannot be well guaranteed.
[0003] In addition, the existing technology relies on staff to continuously level and tamp. However, because there are many internal parts in the synthesis tower and the tower diameter is large, the actual loading of the catalyst does not have good flatness. Therefore, during the catalyst loading process, the bulk density of each section cannot be well guaranteed. At the same time, continuous trampling by personnel causes damage to the catalyst, affecting the use of the catalyst and increasing the resistance of the synthesis tower.
[0004] Moreover, existing research has found that when the original loading scheme is adopted in a large-scale synthesis tower, after starting up, due to the uneven loading of the catalyst, the resistance of each layer in the large-scale synthesis tower is not the same, resulting in the deviation of the catalyst hot spot and overheating of some catalysts, affecting the stable operation of the ammonia synthesis device. Content of the Utility Model
[0005] In order to solve the deficiencies of the existing technology, the utility model provides a catalyst loading device for ammonia synthesis equipment, including a loading funnel. The lower surface of the loading funnel is fixedly communicated with a conical blanking hopper. A connecting groove is opened on the outer surface of the conical blanking hopper. The connecting groove is rotatably connected with a clamping block. A fixing block is fixedly installed on the outer surface of the clamping block. Several blanking pipes are fixedly communicated with the outer surface of the fixing block.
[0006] The feeding end of the blanking pipe is communicated with the discharging end of the conical blanking hopper, and the discharging end is communicated with a spraying joint through a steel braided hose. A baffle bolt for controlling the communication relationship inside the pipeline is arranged on the blanking pipe.
[0007] Furthermore, several connecting pieces are fixedly installed on the outer surface of the loading funnel. Connecting holes are opened on the connecting pieces.
[0008] Furthermore, a buffer funnel is fixedly installed on the inner wall of the loading funnel. The large open end of the buffer funnel communicates with the feeding end of the loading funnel, and the small open end faces the conical feeding hopper.
[0009] Furthermore, an angle is formed between the inclined side wall of the conical feeding hopper and the vertical side wall of the loading funnel, and the angle is greater than 60° and less than 80°.
[0010] Furthermore, one end of a steel wire rope is connected to the outside of the steel braided hose, and the other end of the steel wire rope is connected to a winch.
[0011] Furthermore, a lifting steel wire rope is detachably hooked at the connection hole, and the lifting steel wire rope is connected to a lifting system.
[0012] Furthermore, the spraying joint includes: a fixing mechanism with a hollow structure and a moving mechanism movably connected to the hollow part of the fixing mechanism. The top of the fixing mechanism communicates with the steel braided hose, and the moving mechanism moves relative to the fixing mechanism so that the distance between the outer surface of the moving mechanism and the inner surface of the fixing mechanism changes.
[0013] Furthermore, the fixing mechanism includes a cylinder communicating with the steel braided hose. The bottom of the cylinder communicates with an outer discharge baffle in the shape of a conical barrel. A threaded column arranged along the central axis of the cylinder is fixedly connected to the top of the cylinder through a connecting column.
[0014] The top of the moving mechanism is provided with a bushing sleeving the threaded column. The bottom of the bushing is fixed with an inner discharge baffle matching the outer discharge baffle. A knob is fixed inside the inner discharge baffle, and a rotating groove is arranged on the outer surface of the knob.
[0015] Furthermore, the top of the bushing is connected to the connecting column through a limiting steel chain.
[0016] The beneficial effects of the present utility model are as follows:
[0017] 1. In the present utility model, each discharge pipe is provided with a separate baffle bolt to facilitate the individual control of the filling amount of the catalyst. The discharge pipe is connected with a transparent steel braided hose to facilitate monitoring whether the catalyst flows. The end of the hose is connected with a spraying joint to increase the spraying area and improve the filling quality of the catalyst. The spraying joint is a special joint. After the catalyst is guided by the nozzle, it is evenly sprayed around to cover each corner at the same time, achieving the effect of uniform laying and filling of the catalyst.
[0018] 2. The present utility model can conveniently adjust the height of the loading funnel through a lifting system, reducing the effect of catalyst crushing caused by the catalyst drop. At the same time, a buffer funnel is fixedly installed on the inner wall of the loading funnel to buffer the put catalyst, reducing the drop of the catalyst falling into the loading funnel, thereby further reducing the crushing of the catalyst caused by the drop. Brief Description of the Drawings
[0019] Figure 1 It is a front view schematic diagram of the structure of the present utility model;
[0020] Figure 2 It is a front sectional view schematic diagram of the structure of the present utility model;
[0021] Figure 3 It is the structure of the present utility model Figure 2 at position A;
[0022] Figure 4 It is a bottom view schematic diagram of the structure of the present utility model;
[0023] Figure 5 It is a schematic diagram of the structure of the spraying joint of the present utility model;
[0024] In the figure: 1, loading funnel; 2, connecting piece; 3, connecting hole; 4, buffer funnel; 5, conical blanking hopper; 6, connecting groove; 7, clamping block; 8, fixing block; 9, blanking pipe; 10, baffle bolt; 11, steel braided hose; 12, spraying joint; 1201, fixing mechanism; 12011, cylinder; 12012, outer discharge baffle; 1202, moving mechanism; 12021, bushing; 12022, inner discharge baffle; 1203, knob; 1204, rotating groove; 1205, bushing thread; 1206, threaded column; 1207, limiting steel chain; 1208, connecting column. Detailed Description of the Preferred Embodiment
[0025] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic way, so they only show the components related to the present utility model.
[0026] Please note that the "upper", "lower", "left", "right", "top", "top end", "bottom end", "bottom" and other terms used by the present utility model to describe the positional relationship do not represent the absolute positional relationship between each module / component / assembly / part / element, but the relative positional relationship between each module / component / assembly / part / element.
[0027] Embodiment 1
[0028] A catalyst loading device for an ammonia synthesis equipment, as Figure 1 and Figure 3As shown in the figure, it includes a loading hopper 1. The lower surface of the loading hopper 1 is fixedly communicated with a conical blanking hopper 5. A connecting groove 6 is formed on the outer surface of the conical blanking hopper 5. A clamping block 7 is rotatably connected to the connecting groove 6. A fixing block 8 is fixedly installed on the outer surface of the clamping block 7. Several blanking pipes 9 are fixedly communicated with the outer surface of the fixing block 8.
[0029] The feeding end of the blanking pipe 9 is communicated with the discharging end of the conical blanking hopper 5, and the discharging end is communicated with a spraying joint 12 through a steel braided hose 11. A baffle plug 10 for controlling the communication relationship inside the pipeline is arranged on the blanking pipe 9.
[0030] The working principle of the present utility model is as follows: First, insert the baffle plug 10 to seal the inside of the blanking pipe 9. Then, load the catalyst into the loading hopper 1 and the conical blanking hopper 5, and hoist it into the ammonia synthesis equipment through a hoisting system (such as a bridge crane, a crane, etc.), so that the height difference of the catalyst drop is reduced to about 10 m, reducing the crushing of the catalyst caused by the catalyst drop. After that, when the catalyst loading device of the ammonia synthesis equipment reaches the predetermined height, the staff opens the baffle plug 10, so that the catalyst can flow out from the bottom of the conical blanking hopper 5, and along the blanking pipe 9 through the steel braided hose 11 to the spraying joint 12, and is evenly sprayed out by the spraying joint 12.
[0031] Since the blanking pipe 9 and the spraying joint 12 are communicated through the steel braided hose 11, during the process of spraying the catalyst, the staff can move the position of the spraying joint 12 to make the catalyst evenly laid.
[0032] At the same time, during the process of spraying the catalyst, through the rotational limiting effect of the clamping block 7 and the connecting groove 6, the staff can rotate several spraying joints 12 as a whole, so that the catalyst can be laid more evenly.
[0033] In addition, during operation, the staff stands on the top of the inner part of each section of the catalyst in the ammonia synthesis equipment, without standing on the catalyst for loading. The staff controls several sprayers for loading. Compared with the related technology, the present utility model solves the problems of catalyst deviation and less bulk density that are prone to occur during the catalyst loading process, and can make the catalyst laid at the corresponding position of the ammonia synthesis equipment in a more uniform and dense manner.
[0034] According to an embodiment of the present utility model, several connecting pieces 2 are fixedly installed on the outer surface of the loading hopper 1. Connecting holes 3 are formed in the connecting pieces 2.
[0035] According to an embodiment of the present utility model, a hoisting steel rope is detachably hooked at the connecting hole 3. The hoisting steel rope is connected with the hoisting system.
[0036] This setting facilitates the hoisting system to hoist the loading hopper 1.
[0037] According to an embodiment of the present utility model, a transparent hose section is provided near the spraying joint 12 of the steel braided hose 11.
[0038] This setting facilitates the staff to observe whether the catalyst is flowing.
[0039] Embodiment 2
[0040] Based on the catalyst loading device for ammonia synthesis equipment of Embodiment 1, as Figure 2 shown, a buffer funnel 4 is fixedly installed on the inner wall of the loading funnel 1. The large open end of the buffer funnel 4 is communicated with the feeding end of the loading funnel 1, and the small open end faces the conical feeding hopper 5.
[0041] The added buffer funnel 4 can buffer the catalyst being put in, reduce the drop height of the catalyst falling into the loading funnel 1, so as to further reduce the crushing of the catalyst caused by the drop height of the catalyst.
[0042] According to an embodiment of the present utility model, an included angle is provided between the inclined side wall of the conical feeding hopper 5 and the vertical side wall of the loading funnel 1, and the angle of the included angle is greater than 60° and less than 80°.
[0043] This is provided to facilitate the smooth flow of the catalyst from the conical feeding hopper 5.
[0044] Embodiment 3
[0045] Based on the catalyst loading device for ammonia synthesis equipment of Embodiment 1, one end of a steel wire rope is connected to the outside of the steel braided hose 11. The other end of the steel wire rope is connected to a winch.
[0046] This setting enables the steel braided hose 11 to be displaced up and down as needed to adjust the height position of the spraying joint 12 relative to the conical feeding hopper 5 to adapt to the plane height of the continuously filled catalyst. In addition, it can also function to fix the hose and prevent the hose from falling off due to the self-weight of the catalyst.
[0047] Embodiment 4
[0048] Based on the catalyst loading device for ammonia synthesis equipment of Embodiment 1, as Figure 4 shown, the spraying joint 12 includes: a fixed mechanism 1201 with a hollow structure and a movable mechanism 1202 movably connected to the hollow part of the fixed mechanism 1201. The top end of the fixed mechanism 1201 is communicated with the steel braided hose 11, and the movable mechanism 1202 moves relative to the fixed mechanism 1201 so that the distance between the outer surface of the movable mechanism 1202 and the inner surface of the fixed mechanism 1201 changes.
[0049] The fixing mechanism 1201 includes a cylinder 12011 communicated with the steel braided hose 11, and the bottom of the cylinder 12011 is communicated with a discharge outer baffle 12012 in a conical barrel shape. The top end of the cylinder 12011 is fixedly connected with a threaded column 1206 arranged along the central axis of the cylinder 12011 through a connecting column 1208.
[0050] The top of the movable mechanism 1202 is provided with a bushing 12021 sleeved on the threaded column 1206. One end of the bushing 12021 facing the threaded column 1206 is provided with a bushing thread 1205 matching the threaded column 1206, and the bottom of the bushing 12021 is fixed with a discharge inner baffle 12022 matching the discharge outer baffle 12012. A knob 1203 is fixed inside the discharge inner baffle 12022, and a rotating groove 1204 is arranged on the outer surface of the knob 1203.
[0051] The top end of the bushing 12021 is connected with the connecting column 1208 through a limiting steel chain 1207.
[0052] At this time, the staff can twist the knob 1203 by inserting a tool into the rotating groove 1204, so as to drive the movable mechanism 1202 to rotate relative to the fixing mechanism 1201. At this time, under the screwing and limiting action of the bushing 12021 and the threaded column 1206, the rotation of the movable mechanism 1202 relative to the fixing mechanism 1201 will be converted into the up and down rotational displacement of the movable mechanism 1202 relative to the fixing mechanism 1201, so that the distance between the discharge outer baffle 12012 and the discharge inner baffle 12022 changes (when the movable mechanism 1202 moves upward relative to the fixing mechanism 1201, the distance between the discharge outer baffle 12012 and the discharge inner baffle 12022 decreases, and vice versa), so as to achieve the effect of flexibly and conveniently adjusting the discharge speed of the spraying joint 12.
[0053] The added limiting steel chain 1207 can limit the screwing-out position of the movable mechanism 1202 relative to the fixing mechanism 1201, and prevent the movable mechanism 1202 from screwing off the fixing mechanism 1201.
[0054] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A catalyst loading device for an ammonia synthesis device, comprising a loading funnel (1), characterized in that: The lower surface of the filling funnel (1) is fixedly connected to a conical lower hopper (5), the outer surface of the conical lower hopper (5) is provided with a connecting groove (6), the connecting groove (6) is rotatably connected to a clamping block (7), the outer surface of the clamping block (7) is fixedly mounted with a fixing block (8), and the outer surface of the fixing block (8) is fixedly connected to a plurality of lowering pipes (9); The feed end of the discharge pipe (9) is connected to the discharge end of the conical discharge hopper (5), and the discharge end is connected to the spray joint (12) through a steel braided hose (11); a baffle latch (10) for controlling the connection relationship in the pipeline is provided on the discharge pipe (9).
2. The catalyst loading device for an ammonia synthesis plant according to claim 1, characterized in that: A plurality of connecting pieces (2) are fixedly mounted on the outer surface of the filling funnel (1); and connecting holes (3) are provided on the connecting pieces (2).
3. The catalyst loading device for an ammonia synthesis plant according to claim 1, characterized in that: A buffer funnel (4) is fixedly mounted on the inner wall of the filling funnel (1); the large open end of the buffer funnel (4) is connected to the feeding end of the filling funnel (1), and the small open end faces the conical lower hopper (5).
4. The catalyst loading device for an ammonia synthesis plant according to claim 1, characterized in that: The inclined side wall of the conical lower hopper (5) and the vertical side wall of the filling funnel (1) are arranged at an angle, and the angle is greater than 60° and less than 80°.
5. The catalyst loading device for an ammonia synthesis plant according to claim 1, characterized in that: The outside of the steel braided hose (11) is connected to one end of a steel rope; the other end of the steel rope is connected to a winch.
6. The catalyst loading device for an ammonia synthesis plant according to claim 2, characterized in that: A lifting steel rope is detachably hooked at the connection hole (3); the lifting steel rope is connected to the lifting system.
7. The catalyst loading device for an ammonia synthesis plant according to claim 1, characterized in that: The spray joint (12) comprises: a fixing mechanism (1201) of a hollow structure and a movable mechanism (1202) movably connected to the hollow portion of the fixing mechanism (1201); the top end of the fixing mechanism (1201) is connected to a steel braided hose (11), and the movable mechanism (1202) moves relative to the fixing mechanism (1201) so that the distance between the outer surface of the movable mechanism (1202) and the inner surface of the fixing mechanism (1201) changes.
8. The catalyst loading device for an ammonia synthesis plant according to claim 7, characterized in that: The fixing mechanism (1201) comprises a cylinder (12011) connected to a steel braided hose (11); the bottom of the cylinder (12011) is connected to a conical barrel-shaped discharge outer baffle (12012); the top of the cylinder (12011) is fixedly connected to a threaded column (1206) arranged along the axial direction of the cylinder (12011) via a connecting column (1208) along the central axis of the cylinder (12011); The top of the movable mechanism (1202) is provided with a shaft sleeve (12021) sleeved with a threaded column (1206); the bottom of the shaft sleeve (12021) is fixed with an inner discharge baffle (12022) matching the outer discharge baffle (12012); a knob (1203) is fixed on the inner side of the inner discharge baffle (12022), and a groove (1204) for rotation is provided on the outer surface of the knob (1203).
9. The catalyst loading device for an ammonia synthesis plant according to claim 8, characterized in that: The top end of the shaft sleeve (12021) is connected to the connecting column (1208) via a limiting steel chain (1207).