On-line catalyst filling mechanism for urea catalytic hydrolysis reactor

Abstract

The utility model discloses an on-line catalyst filling mechanism for a urea catalytic hydrolysis reactor, which comprises a screw pump and a feeding seat disc, the feeding seat disc is mounted at a feeding port of the screw pump, the on-line catalyst filling mechanism further comprises a vibration filling mechanism, and the vibration filling mechanism used for filling a catalyst in a vibration manner is mounted at a disc body of the feeding seat disc. The vibration injection mechanism comprises a flange base disc, a material injection pipe, a rubber insertion strip, a supporting plate, a core column and a vibration motor, the flange base disc is installed at the feeding base disc through bolts and nuts, and the vibration injection mechanism is arranged at the position of a screw pump for online catalyst injection of the urea catalytic hydrolysis reactor to form the injection mechanism. Particularly, due to the introduction of the vibration motor, the catalyst in the material injection pipe can be effectively vibrated, the catalyst is promoted to smoothly enter the screw pump from the material injection pipe, and the catalyst is ensured to efficiently and continuously enter the screw pump to be conveyed into the urea catalytic hydrolysis reactor.

Description

Technical Field

[0001] This utility model relates to the field of catalyst injection technology, and in particular to an online catalyst injection mechanism for a urea catalytic hydrolysis reactor. Background Technology

[0002] The urea catalytic hydrolysis reactor is a widely used device in the chemical industry. It is mainly used to decompose urea into carbon dioxide and ammonia under the action of a catalyst. This process is usually carried out under certain temperature and pressure conditions to achieve a highly efficient hydrolysis reaction. When adding catalyst, the urea catalytic hydrolysis reactor is usually controlled online by a screw pump and a matching online controller. When the screw rotates, the catalyst in the chamber is axially transported into the urea catalytic hydrolysis reactor for online addition.

[0003] Currently, when using an online controlled screw pump for online catalyst addition in a urea catalytic hydrolysis reactor, the catalyst addition point of the screw pump is often a simple hopper. Some catalysts are packed tightly in the hopper, resulting in poor catalyst discharge rate for the urea catalytic hydrolysis reactor from the screw pump, thus affecting the online catalyst addition efficiency of the urea catalytic hydrolysis reactor. To address this, we propose an online catalyst addition mechanism for a urea catalytic hydrolysis reactor. Utility Model Content

[0004] The main objective of this invention is to provide an online catalyst injection mechanism for a urea catalytic hydrolysis reactor. The injection mechanism consists of a vibratory injection mechanism installed at the screw pump used for online catalyst injection in the urea catalytic hydrolysis reactor. Through the design of the vibratory injection mechanism, particularly the introduction of a vibratory motor, the catalyst inside the injection pipe can be effectively vibrated, promoting smooth entry of the catalyst from the injection pipe into the screw pump. This ensures that the catalyst can be efficiently and continuously delivered into the urea catalytic hydrolysis reactor via the screw pump, effectively solving the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An online catalyst injection mechanism for a urea catalytic hydrolysis reactor includes a screw pump and a feed plate. The feed plate is installed at the feed inlet of the screw pump. The mechanism also includes a vibration injection mechanism. The feed plate has a vibration injection mechanism for injecting the catalyst, and the vibration injection mechanism includes a flange base plate, an injection pipe, an adhesive strip, a support plate, a core column, and a vibration motor. The flange base plate is installed at the feed plate by bolts and nuts. An injection pipe for accommodating the catalyst is welded to the upper part of the flange base plate. A side port is opened on one side of the injection pipe, and a support plate is welded inside the side port. An adhesive strip is bonded between the support plate and the wall of the side port. A fork is welded to the support plate extending into the injection pipe via a core column. A vibration motor is installed on the surface of the support plate extending out of the injection pipe. A capacity expansion mechanism is installed at the upper opening of the injection pipe.

[0007] Furthermore, the material receiving mechanism includes a bottom swirl tube, a hopper, and an inner baffle. The bottom swirl tube is screwed into the upper opening of the injection pipe. The hopper is welded to the upper opening of the bottom swirl tube. A support ring is welded to the inner wall of the hopper. The inner baffle is supported on the surface of the support ring. The inner baffle extends downward into the hopper along the support ring.

[0008] By adopting the above technical solution, after the bottom vortex tube of the material holding mechanism is screwed and installed at the injection pipe, the hopper above the bottom vortex tube can hold a large amount of catalyst. Then, the catalyst poured into the hopper can enter the hopper through the inner baffle, and the hopper body of the inner baffle can prevent the catalyst from flying upward due to vibration.

[0009] Furthermore, the injection pipe has a threaded pipe wall inside the pipe opening, and a bottom spiral pipe is screwed onto the threaded pipe wall of the injection pipe.

[0010] By adopting the above technical solution, the injection pipe can be installed by screwing the bottom spiral pipe with the threaded pipe wall, so that the hopper and the bottom spiral pipe can be connected.

[0011] Furthermore, the flange base plate below the injection pipe and the surface of the feed seat plate are provided with mounting holes for bolts to pass through, and a nut is screwed on the lower bolt body where the bolt passes through the feed seat plate.

[0012] By adopting the above technical solution, the flange base plate of the injection pipe can be flanged at the feed seat plate using bolts and nuts.

[0013] Furthermore, a cone head is welded to the top of the core column inside the injection tube, and a fork is welded to three points on the outer side of the core column.

[0014] By adopting the above technical solution, when the catalyst enters the injection pipe, the catalyst is forked at the cone and fork of the core column. With the vibration of the core column, the catalyst can enter the screw pump efficiently along the core column, ensuring that the catalyst can be smoothly delivered into the urea catalytic hydrolysis reactor for catalytic use.

[0015] Furthermore, a support plate is welded to the side of the core column near the side fixing opening, and the plate of the support plate extends through the slot opened on the surface of the adhesive strip.

[0016] By adopting the above technical solution, after the core column is welded to the support plate, one side of the support plate can be welded at the side fixing point, and the plate can pass through the groove of the adhesive strip.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention establishes a feeding mechanism by setting a vibratory feeding mechanism at the screw pump used for online catalyst feeding in a urea catalytic hydrolysis reactor. Through the design of the vibratory feeding mechanism, especially the introduction of a vibratory motor, the catalyst in the feeding pipe can be effectively vibrated, promoting the smooth entry of the catalyst from the feeding pipe into the screw pump. This ensures that the catalyst can be efficiently and continuously fed into the urea catalytic hydrolysis reactor by the screw pump.

[0019] Furthermore, the addition of the material handling mechanism, especially the combination of the bottom vortex tube and the hopper, greatly increases the catalyst storage capacity at the injection pipe. This not only reduces the need for frequent feeding but also improves the continuity and stability of the overall operation. The design of the inner baffle effectively prevents the catalyst from flying upward out of the hopper due to vibration. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an online catalyst injection mechanism for a urea catalytic hydrolysis reactor according to the present invention.

[0021] Figure 2 This is a schematic diagram showing the disassembled feed plate and vibratory injection mechanism of an online catalyst injection mechanism for a urea catalytic hydrolysis reactor according to this utility model.

[0022] Figure 3 This is a schematic diagram showing the disassembly of the vibration injection mechanism and the material holding mechanism of the online catalyst injection mechanism for a urea catalytic hydrolysis reactor according to this utility model.

[0023] Figure 4 This is an exploded view of the vibration injection mechanism of an online catalyst injection mechanism for a urea catalytic hydrolysis reactor according to this utility model.

[0024] Figure 5 This is an exploded view of the material holding mechanism of an online catalyst feeding mechanism for a urea catalytic hydrolysis reactor according to this utility model.

[0025] In the diagram: 1. Screw pump; 2. Feed seat plate; 3. Vibratory injection mechanism; 4. Material receiving mechanism; 5. Flange base plate; 6. Injection pipe; 7. Side fixed port; 8. Adhesive strip; 9. Support plate; 10. Core column; 11. Fork rod; 12. Vibratory motor; 13. Cone head; 14. Bottom swirl tube; 15. Hopper; 16. Support ring; 17. Inner baffle. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figure 1-5 As shown, an online catalyst injection mechanism for a urea catalytic hydrolysis reactor includes a screw pump 1 and a feed plate 2. The feed plate 2 is installed at the feed inlet of the screw pump 1. The mechanism also includes a vibration injection mechanism 3. The vibration injection mechanism 3 for vibrating and injecting the catalyst is installed on the plate body of the feed plate 2. The vibration injection mechanism 3 includes a flange base plate 5, an injection pipe 6, an adhesive strip 8, a support plate 9, a core column 10, and a vibration motor 12. The flange base plate 5 is installed at the feed plate 2 by bolts and nuts. The upper part of the plate 5 is welded with a feeding pipe 6 for containing the catalyst. The feeding pipe 6 has a side port 7 on one side of the pipe body, and a support plate 9 is welded inside the cavity of the side port 7. An adhesive strip 8 is bonded between the support plate 9 and the cavity wall of the side port 7. A fork rod 11 is welded to the part of the support plate 9 that extends into the plate body of the feeding pipe 6 through a core column 10. A vibration motor 12 is installed on the surface of the support plate 9 that extends out of the plate body of the feeding pipe 6. A material holding mechanism 4 for expansion is installed at the upper opening of the feeding pipe 6.

[0028] The material holding mechanism 4 includes a bottom swirl tube 14, a hopper 15, and an inner baffle 17. The bottom swirl tube 14 is screwed into the upper opening of the injection pipe 6. The hopper 15 is welded to the upper opening of the bottom swirl tube 14. A support ring 16 is welded into the upper wall of the hopper 15. The inner baffle 17 is supported on the ring surface of the support ring 16. The hopper body of the inner baffle 17 passes downward into the hopper 15 along the support ring 16.

[0029] By adopting the above technical solution, after the bottom swirl tube 14 of the material holding mechanism 4 is screwed and installed at the injection pipe 6, the hopper 15 above the bottom swirl tube 14 can hold a large amount of catalyst. Then the catalyst poured into the hopper 15 can enter the hopper 15 through the inner baffle 17, while the hopper body of the inner baffle 17 can prevent the catalyst from flying upward due to vibration.

[0030] The injection pipe 6 has a threaded pipe wall inside the upper pipe opening, and a bottom spiral pipe 14 is screwed onto the threaded pipe wall of the injection pipe 6.

[0031] By adopting the above technical solution, the injection pipe 6 can be installed by screwing the bottom spiral pipe 14 with the threaded pipe wall, so that the hopper 15 and the bottom spiral pipe 14 are connected.

[0032] Among them, the flange base plate 5 below the injection pipe 6 and the surface of the feed seat plate 2 are provided with mounting holes for bolts to pass through, and a nut is screwed on the lower bolt body where the bolt passes through the feed seat plate 2.

[0033] By adopting the above technical solution, the flange base plate 5 of the injection pipe 6 can be flanged at the feed seat plate 2 using bolts and nuts.

[0034] The core column 10 inside the injection tube 6 is welded with a cone head 13 at its top end, and the core column 10 is welded with a fork 11 at three points on its outer side.

[0035] By adopting the above technical solution, when the catalyst enters the injection pipe 6, the catalyst is forked at the cone 13 and fork 11 of the core column 10. With the vibration of the core column 10, the catalyst can enter the screw pump 1 efficiently along the core column 10, ensuring that the catalyst can be smoothly sent into the urea catalytic hydrolysis reactor for catalytic use by the screw pump 1.

[0036] Among them, the support plate 9 is welded to the column body of the core column 10 near the side fixed opening 7, and the plate body of the support plate 9 passes through the strip opening opened on the surface of the adhesive insert 8.

[0037] By adopting the above technical solution, after the core column 10 is welded to the support plate 9, one side of the support plate 9 can be welded at the side fixing opening 7, and the support plate 9 can pass through the opening of the adhesive strip 8.

[0038] It should be noted that this utility model is an online catalyst injection mechanism for a urea catalytic hydrolysis reactor. A vibratory injection mechanism 3 is installed at the screw pump 1 used for online catalyst injection in the urea catalytic hydrolysis reactor to form the injection mechanism. The flange base plate 5 of the vibratory injection mechanism 3 can be flange-connected to the feed seat plate 2 for installation. A vibration motor 12 can be installed on the support plate 9 extending from the injection pipe 6 above the flange base plate 5. The vibration motor 12 and the screw pump 1 can be connected to an external online controller for power control. Simultaneously, the bottom swivel pipe 14 of the material receiving mechanism 4 can be screwed onto the injection pipe 6. When the screw pump 1... After the outlet is flanged at the urea catalytic hydrolysis reactor, the catalyst for the urea catalytic hydrolysis reaction can be poured from the inner baffle 17 into the container 15. Then, after the container 15 and the injection pipe 6 are interconnected, the catalyst can fall in. With the online control of the online controller, the vibration motor 12 drives the core rod 10 to vibrate through the support plate 9. The core rod 10 drives the injection pipe 6 and the catalyst in the container 15 to vibrate through the fork 11, so that the catalyst can quickly vibrate into the screw pump 1. Then, the screw pump 1 is online controlled by the online controller to deliver the catalyst into the urea catalytic hydrolysis reactor for injection.

[0039] It should be noted that this utility model is an online catalyst injection mechanism for a urea catalytic hydrolysis reactor. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An online catalyst dosing mechanism for a urea catalytic hydrolysis reactor, comprising a screw pump (1) and a feed plate (2), wherein the feed plate (2) is installed at the feed inlet of the screw pump (1), characterized in that: It also includes a vibratory injection mechanism (3). The vibratory injection mechanism (3) for vibrating injection of catalyst is installed on the disc body of the feed seat (2). The vibratory injection mechanism (3) includes a flange base plate (5), an injection pipe (6), an adhesive strip (8), a support plate (9), a core column (10), and a vibration motor (12). The flange base plate (5) is installed on the feed seat plate (2) by bolts and nuts. An injection pipe (6) for accommodating catalyst is welded to the upper part of the disc body of the flange base plate (5). A side port (7) is provided on one side of the tube body of the tube (6), and a support plate (9) is welded inside the cavity of the side port (7). An adhesive strip (8) is bonded between the support plate (9) and the cavity wall of the side port (7). A fork rod (11) is welded to the plate body of the injection tube (6) through a core column (10). A vibration motor (12) is installed on the plate body surface of the support plate (9) extending out of the injection tube (6). A material receiving mechanism (4) for expansion is installed at the upper opening of the injection tube (6).

2. The catalyst online injection mechanism for a urea catalytic hydrolysis reactor according to claim 1, characterized in that: The material holding mechanism (4) includes a bottom swirl tube (14), a hopper (15), and an inner baffle (17). The bottom swirl tube (14) is screwed into the upper opening of the injection pipe (6). The hopper (15) is welded to the upper opening of the bottom swirl tube (14). A support ring (16) is welded to the inner wall of the hopper (15). The inner baffle (17) is supported on the surface of the ring (16). The hopper body of the inner baffle (17) extends downward into the hopper (15) along the support ring (16).

3. The catalyst online injection mechanism for a urea catalytic hydrolysis reactor according to claim 2, characterized in that: The injection pipe (6) has a threaded pipe wall inside the upper opening, and a bottom spiral pipe (14) is screwed onto the threaded pipe wall of the injection pipe (6).

4. The catalyst online injection mechanism for a urea catalytic hydrolysis reactor according to claim 3, characterized in that: The flange base plate (5) below the injection pipe (6) and the feed seat plate (2) have mounting holes for bolts to pass through, and a nut is screwed on the lower bolt body of the bolt that passes through the feed seat plate (2).

5. The catalyst online injection mechanism for a urea catalytic hydrolysis reactor according to claim 4, characterized in that: The top of the core column (10) inside the injection tube (6) is welded with a cone head (13), and the outer side of the core column (10) is welded with a fork (11) at three points.

6. The catalyst online injection mechanism for a urea catalytic hydrolysis reactor according to claim 5, characterized in that: The core column (10) is welded with a support plate (9) on one side of the column near the side fixed opening (7), and the plate of the support plate (9) passes through the slot opened on the surface of the adhesive insert (8).

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