A slagging device for a reaction kettle

Abstract

The utility model relates to the technical field of chemical equipment discloses a kind of deslagging devices for reaction kettle, including reaction kettle, first pipeline, second pipeline, first pipeline is connected by elbow connection constitution by vertical section and horizontal section, vertical section top end connects reaction kettle bottom discharge port, and horizontal section end connects emulsion pump;Second pipeline inlet end is located in elbow outer wall, and elbow curvature is greater than second pipeline curvature, and second pipeline outlet end connects airtight cylindrical chamber top, and cylindrical chamber bottom is equipped with discharge pipe, and cleaning valve assembly is installed on discharge pipe, and cleaning valve assembly includes upper gate valve and lower gate valve, and buffer cavity is formed between two gate valves.This device utilizes the different centrifugal force inertia force of slurry agglomerate at pipeline flow, designs shunt pipe, while agglomerate enters cylindrical chamber and is accumulated when slurry is normally transported, so that agglomerate and slurry are shunted, avoid pipeline blockage and agglomerate jamming emulsion pump, thereby affecting overall material conveying time, realize material smooth conveying.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a slag discharge device for a reaction vessel. Background Technology

[0002] The lithium-ion battery cathode precursor material, iron phosphate, is synthesized in a reactor. After synthesis, it is transported to a reaction material storage tank via pipelines and emulsion pumps, where it undergoes subsequent production processes such as pressure filtration and washing. However, during the material discharge process from the reactor, some agglomerated material easily forms a large amount of sediment inside the discharge pipe below the reactor and enters the emulsion pump, causing severe blockage of the pipelines and emulsion pumps, making it difficult to maintain stable production. Therefore, it is necessary to separate the agglomerated material from the free-flowing slurry during the transportation process to avoid pipeline blockage and affecting the operation of the emulsion pump, increasing maintenance frequency and costs, delaying material transportation, and thus affecting the production process.

[0003] Patent CN202223319290.5 discloses a reactor for the synthesis of iron phosphate precursors, including a discharge pipe connected to the reactor body. One end of the discharge pipe connected to the reactor body is equipped with a detachable filter plate, and the other end is equipped with a discharge port. After the reaction is completed, the filtrate can be extracted through the discharge port at the bottom of the reactor. The detachable filter plate can complete solid-liquid separation. However, as a component that is in long-term contact with the high temperature and high pressure environment of the reactor, the detachable filter plate needs to be disassembled and inspected regularly to effectively prevent the risk of material leakage. Furthermore, the disassembly process must be safe, standardized, and compliant with regulations; otherwise, there is a danger. In addition, if the filtrate is excessive or insufficient, the reactor needs to be shut down and the conveying process paused to remove the detachable filter plate for cleaning or repair, which will delay the process flow. Patent CN202122108976.9 discloses a purification device for recovering lithium carbonate from lithium iron phosphate batteries, which includes a reactor discharge valve, a slurry discharge valve, and an iron powder discharge valve. The three work together to separate the lithium carbonate slurry and iron impurities, and transport them out of the reactor separately. However, this solution cannot transport iron powder and slurry at the same time. An additional electromagnetic device is required. When slurry needs to be discharged, the electromagnetic device is turned on to adsorb the iron powder, and then the iron powder discharge valve is closed and the slurry discharge valve is opened. When iron powder needs to be discharged, the reverse is done. This switching is very cumbersome and affects the process time.

[0004] To address the aforementioned issues, this device utilizes the differences in flowability, centrifugal force, inertia, and velocity between normal slurry and large lumps at pipe bends. A diversion pipe is designed so that while the slurry is being transported normally, the large lumps enter the cylindrical chamber within the diversion pipe and accumulate, thus separating the larger lumps from the slurry. This prevents pipe blockage and lumps from clogging the emulsification pump, which would otherwise affect the overall material transport time, and achieves stable material transport. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a slag discharge device for reactors, which solves problems such as cumbersome separation of agglomerated materials and slurry, inability to transport them simultaneously, and blockage of pipelines and emulsification pumps in existing technologies, thereby achieving stable transportation.

[0006] To solve the above problems, the technical solution adopted by this utility model is: a slag discharge device for a reactor, including a reactor (1), a first pipe (2) and a second pipe (3), characterized in that: the first pipe (2) is composed of a vertical section (21) and a horizontal section (22) connected by an elbow (23), the top of the vertical section (21) is connected to the bottom outlet of the reactor (1), and the end of the horizontal section (22) is connected to an emulsifying pump (4); the inlet end (31) of the second pipe (3) is located on the outer wall of the elbow (23), the curvature of the elbow (23) is greater than the curvature of the second pipe (3), the outlet end (32) of the second pipe (3) is connected to the top of a sealed cylindrical chamber (5), a discharge pipe (6) is installed at the bottom of the cylindrical chamber (5), a cleaning valve assembly (7) is installed on the discharge pipe (6), the cleaning valve assembly (7) includes an upper gate valve (71) and a lower gate valve (72), and a buffer chamber (73) is formed between the two gate valves.

[0007] Furthermore, the second pipe (3) includes a vertical straight pipe.

[0008] Furthermore, the vertical section (21) is provided with a control valve (210), which is a ball valve or a gate valve.

[0009] Furthermore, the volume of the buffer cavity (73) is greater than or equal to 15% of the volume of the cylindrical chamber (5).

[0010] Furthermore, the pipe diameter D1 of the outlet end (32) and the diameter D2 of the cylindrical chamber (5) satisfy: D2≥4D1.

[0011] Furthermore, the diameter to height ratio of the cylindrical chamber (5) is 1:1.5.

[0012] Compared with existing technologies, the beneficial effects of this solution are: 1. Anti-clogging: The lumpy material is diverted to the cylindrical chamber to prevent it from entering the main pipeline and causing blockage.

[0013] 2. Zero downtime: Slag is discharged by controlling the cleaning valve assembly, and the upper and lower gate valves are opened and closed at regular intervals to ensure that the cylindrical chamber is sealed and to avoid affecting the operation of the main slurry transportation process.

[0014] 3. Low cost: Simple structure, low modification cost, adaptable to existing reactor piping systems, convenient maintenance, and strong practicality.

[0015] 4. Extend equipment life: Prevent caking material from blocking the pump body, reducing the frequency and cost of emulsification pump maintenance.

[0016] 5. Improve production efficiency: The splitter pipe can simultaneously separate agglomerated material and slurry without affecting the production process time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the slag discharge device for a reaction vessel according to the present invention.

[0018] In the diagram: 1-Reaction vessel, 2-First pipe, 21-Vertical section, 210-Control valve, 22-Horizontal section, 23-Right angle elbow, 3-Second pipe, 31-Inlet end, 32-Outlet end, 4-Emulsifying pump, 5-Cylindrical chamber, 6-Discharge pipe, 7-Clean valve assembly, 71-Upper gate valve, 72-Lower gate valve, 73-Buffer chamber. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Implementation, for example, attached Figure 1 As shown: This embodiment is a slag discharge device for a reactor, including a reactor 1, a first pipe 2, and a second pipe 3. The first pipe 2 is composed of a vertical section 21 and a horizontal section 22 connected by an elbow 23. The top end of the vertical section 21 is connected to the bottom outlet of the reactor 1, and the end end of the horizontal section 22 is connected to an emulsifying pump 4. The inlet end 31 of the second pipe 3 is located on the outer wall of the elbow 23. The curvature of the elbow 23 is greater than that of the second pipe 3. The outlet end 32 of the second pipe 3 is connected to the top of a sealed cylindrical chamber 5. A discharge pipe 6 is installed at the bottom of the cylindrical chamber 5. A cleaning valve assembly 7 is installed on the discharge pipe 6. The cleaning valve assembly 7 includes an upper gate valve 71 and a lower gate valve 72, and a buffer chamber 73 is formed between the two gate valves.

[0021] When the material flows out from the discharge port at the bottom of the reactor 1, because the cleaning valve assembly 7 is in the closed state, the cylindrical chamber 5 connected to the second pipe 3 is a closed chamber at this moment. Therefore, the material has a high flow velocity at the bend 23 with a large curvature in the first pipe 2, and a lower flow velocity in the second pipe 3 with a small curvature. The diameter of the first pipe 2 is preferably DN125, and the diameter of the second pipe 3 is preferably DN80. The diameter of the second pipe 3 is smaller than that of the first pipe 2 to ensure that the agglomerated material is drawn into the second pipe 3 under negative pressure, inhibiting the mixing of slurry. The second pipe 3 is preferably a vertical straight pipe, at which point the curvature is 0, and the agglomerated material settles into the cylindrical chamber 5 by pure gravity, reducing the retention of agglomerated material. Moreover, the structure is simple and the manufacturing cost is low. The second pipe 3 can also be a bend with a large curvature radius, as long as the overall curvature of the second pipe 3 must be significantly smaller than the curvature of the bend 23.

[0022] When the material passes through the bend 23, the agglomerated material is thrown towards the outer wall of the bend 23 due to its high density and high inertia. At this time, it is captured by the inlet end 31 of the second pipe 3 and then settles along the second pipe 3. The slurry, due to its low viscosity, flows along the inner side of the bend 23 and enters the horizontal section 22.

[0023] The vertical section 21 is equipped with a control valve 210, which can be a ball valve or a gate valve. The control valve 210 is used to control the discharge of materials in the reactor 1, and the ball valve or gate valve is selected to avoid blockage.

[0024] The volume of the buffer chamber 73 is greater than or equal to 15% of the volume of the cylindrical chamber 5. By controlling the cleaning valve assembly 7, the agglomerated material flows from the cylindrical chamber 5 into the buffer chamber 73, ensuring that the seal of the cylindrical chamber 5 is not damaged, and the buffer chamber 73 can also accommodate a certain volume of agglomerated material.

[0025] The diameter D1 of the outlet pipe 32 and the diameter D2 of the cylindrical chamber 5 satisfy the condition: D2 ≥ 4D1. The diameter-to-height ratio of the cylindrical chamber 5 is 1:1.5. Based on the on-site production environment, the cylindrical chamber 5 is preferably 40cm in diameter and 60cm in height. This ensures a rapid drop in flow velocity after the agglomerated material enters the cylindrical chamber 5 from the second pipe 3, providing sufficient space for adequate settling. Simultaneously, the height-to-diameter ratio of the cylindrical chamber 5 optimizes settling efficiency and prevents blockage.

[0026] When using this invention: After the ferric phosphate reaction is completed in the reactor 1, the upper gate valve 71 and the lower gate valve 72 are closed, and the control valve 210 is opened. The agglomerated material and slurry flow out from the outlet at the bottom of the reactor 1 and flow downwards along the vertical section 21 of the first pipe 2. The agglomerated material has a high density and large volume, and extremely poor fluidity. In the first pipe 2, it mainly relies on gravity settling or low-speed pushing movement. The slurry is an approximately homogeneous fluid with good fluidity and can be continuously transported along the flow direction of the first pipe 2. When it flows to the bend 23, because the agglomerated material has a high density, the material has initially stratified. The curvature of the bend 23 is greater than that of the second pipe 3, so the agglomerated material has poor following at the bend 23. Because centrifugal force and gravity easily deposit it on the pipe wall, the inlet end 31 of the second pipe 3 captures the agglomerated material. At this time, the agglomerated material settles along the second pipe 3 and enters the cylindrical chamber 5 through the outlet end 32, while the slurry continues forward along the horizontal section 22 of the first pipe 2 until it enters the emulsifying pump 4. When agglomerated material accumulates in the cylindrical chamber 5, the cleaning valve assembly 7 is timed to discharge the material via the discharge pipe 6. When a certain amount of agglomerated material accumulates in the cylindrical chamber 5, the upper gate valve 71 is opened and the lower gate valve 72 is closed at regular intervals, allowing the agglomerated material to flow from the cylindrical chamber 5 into the buffer chamber 73. Then, the upper gate valve 71 is closed and the lower gate valve 72 is opened, and the agglomerated material in the buffer chamber 73 is discharged through the discharge pipe 6, achieving discharge without stopping the machine. This device utilizes the material's own gravity, fluidity, and centrifugal force for natural sedimentation, and uses a diversion pipe to achieve diversion, avoiding blockage of the main pipeline and pump, reducing maintenance costs, and achieving stable material transportation.

[0027] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A slag discharge device for a reactor, comprising a reactor (1), a first pipe (2), and a second pipe (3), characterized in that: The first pipe (2) is composed of a vertical section (21) and a horizontal section (22) connected by a bend (23). The top of the vertical section (21) is connected to the bottom outlet of the reactor (1), and the end of the horizontal section (22) is connected to the emulsifying pump (4). The inlet end (31) of the second pipe (3) is located on the outer wall of the bend (23). The curvature of the bend (23) is greater than that of the second pipe (3). The outlet end (32) of the second pipe (3) is connected to the top of the sealed cylindrical chamber (5). A discharge pipe (6) is installed at the bottom of the cylindrical chamber (5). A cleaning valve assembly (7) is installed on the discharge pipe (6). The cleaning valve assembly (7) includes an upper gate valve (71) and a lower gate valve (72). A buffer chamber (73) is formed between the two gate valves.

2. The slag discharge device for a reactor according to claim 1, characterized in that: The second pipe (3) includes a vertical straight pipe.

3. The slag discharge device for a reactor according to claim 1, characterized in that: The vertical section (21) is equipped with a control valve (210), which is a ball valve or a gate valve.

4. The slag discharge device for a reaction vessel according to claim 1, characterized in that: The volume of the buffer cavity (73) is greater than or equal to 15% of the volume of the cylindrical chamber (5).

5. A slag discharge device for a reaction vessel according to claim 1, characterized in that: The pipe diameter D1 of the outlet end (32) and the diameter D2 of the cylindrical chamber (5) satisfy: D2≥4D1.

6. A slag discharge device for a reaction vessel according to claim 1, characterized in that: The diameter to height ratio of the cylindrical chamber (5) is 1:1.5.

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