Direct supply device for monoammonium phosphate battery grade slurry

Abstract

The utility model discloses a direct supply device for monoammonium phosphate battery grade slurry, which is used for improving the filling efficiency of a tank truck. The device comprises a first acid preparation tank and a second acid preparation tank which are used for storing and preparing raw material acid; the tubular reaction tank is respectively communicated with the first acid preparation tank and the second acid preparation tank and is used for receiving production acid through a communicated pipeline; the environment-friendly ground tank is respectively communicated with the first acid preparation tank, the second acid preparation tank, the washing tower, the tubular reaction tank, the environment-friendly ground tank and the slurry storage tank and is used for receiving waste materials; the washing tower is communicated with the tubular reaction tank and is used for receiving the waste gas discharged by the tubular reaction tank and washing the waste gas; the buffer tank is communicated with the tubular reaction tank and is used for receiving the slurry output by the tubular reaction tank through a communicated pipeline; the slurry storage tank is communicated with the buffer tank, receives the slurry output by the buffer tank through a communicated pipeline and stores the slurry; and the filling platform is communicated with the slurry storage tank, receives the slurry output by the slurry storage tank through a communicated pipeline, and fills the tank car.

Description

Technical Field

[0001] This application relates to the field of phosphoric acid production technology, and in particular to a direct supply device for battery-grade monoammonium phosphate slurry. Background Technology

[0002] With the rapid development of new energy vehicles, lithium iron phosphate batteries, as a battery technology with high energy density and long cycle life, have become a hot topic in research and application both domestically and internationally. One of the key raw materials for the cathode material of lithium iron phosphate batteries is battery-grade monoammonium phosphate, and its demand is constantly increasing with market growth. Some existing monoammonium phosphate production facilities use a process of "neutralization, crystallization, and centrifugal drying" to convert industrial-grade phosphoric acid into battery-grade monoammonium phosphate.

[0003] Currently, market demand for battery-grade slurry is gradually increasing, while existing monoammonium phosphate (MAP) production facilities mainly supply crystalline MAP, which cannot fully meet the diverse needs of customers. Therefore, in order to adapt to market changes, achieve product diversification, and enhance the company's competitiveness and adaptability in the market, designing a device capable of directly supplying battery-grade slurry has become particularly important. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a direct supply device for monoammonium phosphate battery-grade slurry, comprising:

[0005] The first and second acid mixing tanks are used for storing and preparing raw acid.

[0006] The tubular reaction vessel is connected to the first acid preparation tank and the second acid preparation tank respectively, and receives production acid through the connected pipelines;

[0007] The environmental protection tank is connected to the first acid mixing tank, the second acid mixing tank, the washing tower, the tubular reaction tank, and the slurry storage tank, respectively, and is used to receive waste materials;

[0008] A scrubbing tower, connected to the tubular reaction tank, is used to receive the waste gas discharged from the tubular reaction tank and to scrub the waste gas.

[0009] A buffer tank is connected to the tubular reactor and receives the slurry output from the tubular reactor through a connected pipeline.

[0010] A slurry storage tank is connected to the buffer tank and receives and stores the slurry output from the buffer tank through a connected pipeline.

[0011] The filling platform is connected to the slurry storage tank and receives the slurry output from the slurry storage tank through the connected pipeline, and fills the tank truck.

[0012] Optionally, the tubular reaction tank integrates a storage tank, a reactor, a stirring paddle, a feed pump, a level gauge, and a thermometer.

[0013] Optionally, the environmental protection trough includes a first sub-environmental protection trough and a second sub-environmental protection trough. The first sub-environmental protection trough is connected to the first acid mixing tank, the second acid mixing tank and the tubular reaction tank, respectively. The second sub-environmental protection trough is connected to the buffer tank, the slurry storage tank and the filling platform, respectively.

[0014] Optionally, a first reflux pipeline is provided on the pipeline connecting the tubular reaction tank and the buffer tank, and the first reflux pipeline returns the flow to the tubular reaction tank.

[0015] Optionally, a second return pipe is provided on the pipeline connecting the slurry storage tank and the filling platform, and the second return pipe returns the slurry to the slurry storage tank.

[0016] Optionally, the first acid mixing tank is connected to the second acid mixing tank, and the second acid mixing tank receives acid from the first acid mixing tank through a connected pipeline.

[0017] Optionally, the tubular reaction tank is equipped with an ejector.

[0018] Optionally, the ejector is connected to the DAP liquid ammonia pipeline.

[0019] As can be seen from the above technical solutions, this application has the following advantages:

[0020] 1. Neutralization reaction is carried out through a tubular reaction tank, which has a fast reaction speed, high efficiency, and can carry out continuous production, ensuring the supply of slurry.

[0021] 2. By rationally arranging various equipment and connecting pipelines, the process flow was simplified, intermediate steps were reduced, and overall production efficiency was improved.

[0022] 3. This device can directly supply battery-grade monoammonium phosphate slurry, meeting market demand for products in different forms and enhancing product diversity and market competitiveness.

[0023] 4. Equipped with environmentally friendly ground tanks and scrubbing towers, it can effectively collect and treat waste and exhaust gas, reduce environmental pollution, and meet environmental protection requirements.

[0024] 5. Adopting a DCS control system enables centralized control and management of the entire production process, improving the automation and accuracy of the production process, reducing manual operation, and enhancing production safety.

[0025] 6. By optimizing reaction conditions and material transportation, the utilization rate of raw materials can be maximized, resource waste can be reduced, and the economic efficiency of production can be improved.

[0026] 7. Direct supply of slurry to the filling platform facilitates filling by tank trucks, improves transportation efficiency, and reduces time and cost consumption in intermediate links. Attached Figure Description

[0027] Figure 1 A schematic diagram of an embodiment of the direct supply device for battery-grade monoammonium phosphate slurry provided in this application;

[0028] Figure 2 This is a schematic diagram of an embodiment of the tubular reaction tank in the direct supply device for battery-grade monoammonium phosphate slurry provided in this application. Detailed Implementation

[0029] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0030] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0031] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0032] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0033] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] See Figure 1 as well as Figure 2 This application first provides an embodiment of a direct supply device for battery-grade monoammonium phosphate slurry, comprising:

[0035] The first acid mixing tank 01 and the second acid mixing tank 02 are used to store and mix raw acid.

[0036] The tubular reaction tank 03 is connected to the first acid mixing tank 01 and the second acid mixing tank 02 respectively, and receives production acid through the connected pipelines;

[0037] The environmental protection tank 04 is connected to the first acid mixing tank 01, the second acid mixing tank 02, the washing tower 05, the tubular reaction tank 03, the environmental protection tank 04, and the slurry storage tank 07, respectively, and is used to receive waste materials.

[0038] The scrubbing tower 05 is connected to the tubular reaction tank 03 and is used to receive the waste gas discharged from the tubular reaction tank and to scrub the waste gas.

[0039] The buffer tank 06 is connected to the tubular reaction tank 03 and receives the slurry output from the tubular reaction tank 03 through the connected pipeline;

[0040] The slurry storage tank 07 is connected to the buffer tank 06 and receives the slurry output from the buffer tank 06 through the connected pipeline and stores it.

[0041] The filling platform 08 is connected to the slurry storage tank 07 and receives the slurry output from the slurry storage tank 07 through the connected pipeline, and fills the tank truck.

[0042] This application provides a direct supply device for monoammonium phosphate (MAP) battery-grade slurry, aiming to achieve continuous production and direct supply of MAP slurry through an efficient and environmentally friendly process. The device includes the following key components:

[0043] 1. First acid mixing tank 01 and second acid mixing tank 02

[0044] Used for storing and preparing raw acid materials to ensure a stable supply of acid.

[0045] It is connected to tubular reaction tank 03, and the production acid is transported to the reaction tank through the pipeline for reaction.

[0046] 2. Tubular Reactor 03

[0047] It serves as the core reaction device for the neutralization reaction of monoammonium phosphate.

[0048] It integrates facilities such as storage tank 09, reactor 10, agitator 11, feed pump 12, level gauge 13, and thermometer 14.

[0049] It is connected to the first acid mixing tank 01 and the second acid mixing tank 02 to receive acid for production.

[0050] It is connected to buffer tank 06, and the generated slurry is transported to buffer tank 06 through pipeline.

[0051] 3. Environmentally friendly trench 04

[0052] Used to receive and process waste to prevent environmental pollution.

[0053] It adopts a reinforced concrete integral casting structure, with anti-corrosion rubber and stainless steel inner liner, and is equipped with a mixing paddle 11 device and a ground pump.

[0054] It is connected to the first acid mixing tank 01, the second acid mixing tank 02, the washing tower 05, the tubular reaction tank 03, and the slurry storage tank 07 respectively to ensure centralized treatment of waste materials.

[0055] 4. Scrubber Tower 05

[0056] It is used to receive the exhaust gas discharged from the tubular reaction tank 03 and to wash the exhaust gas.

[0057] It is connected to the tubular reaction tank 03, and receives the waste gas generated during the reaction through the pipeline, and discharges it after washing treatment.

[0058] 5. Buffer slot 06

[0059] Used to receive the slurry output from tubular reactor 03, serving as a buffer and temporary storage.

[0060] It is connected to the tubular reaction tank 03 through a pipeline to receive and buffer the slurry generated by the reaction.

[0061] The slurry in buffer tank 06 is transported to slurry storage tank 07 through pipelines.

[0062] 6. Slurry storage tank 07

[0063] Used to store the slurry delivered from buffer tank 06, ensuring a stable supply of slurry.

[0064] It is connected to buffer tank 06 and receives slurry through pipeline.

[0065] The slurry is transported to the filling platform 08 through pipelines for further processing or filling.

[0066] 7. Filling Platform 08

[0067] Used to receive slurry output from slurry storage tank 07 and to fill tank trucks.

[0068] It is connected to the slurry storage tank 07 and receives the slurry output from the slurry storage tank 07 through a pipeline.

[0069] It can be equipped with flow meters, pneumatic valves, heat tracing pipelines and purging pipelines to ensure the safety, efficiency and accuracy of the filling process.

[0070] Detailed operating procedures

[0071] Raw material acid preparation and supply:

[0072] The first acid mixing tank 01 and the second acid mixing tank 02 store and mix raw acid, and transport the acid to the tubular reaction tank 03 through connecting pipelines.

[0073] Neutralization reaction:

[0074] Inside the tubular reaction tank 03, the raw material acid and ammonia water undergo a neutralization reaction to produce battery-grade monoammonium phosphate slurry. The waste gas from the reaction process is discharged to the scrubbing tower 05 for treatment through pipelines.

[0075] Waste gas treatment:

[0076] The scrubbing tower 05 receives the exhaust gas discharged from the tubular reaction tank 03, scrubs and treats it before discharging it to ensure compliance with environmental protection requirements.

[0077] Slurry buffering and storage:

[0078] The generated slurry is transported through pipelines to buffer tank 06 for temporary storage and buffering, and then transported through pipelines to slurry storage tank 07.

[0079] Filling operation:

[0080] The slurry in the slurry storage tank 07 is transported to the filling platform 08 through pipelines for tanker filling. During the filling process, facilities such as flow meters, pneumatic valves, heating pipelines, and purging pipelines ensure the safety and efficiency of the filling process.

[0081] In an optional embodiment, the tubular reaction tank 03 integrates a storage tank 09, a reactor 10, an agitator 11, a feed pump 12, a level gauge 13, and a thermometer 14.

[0082] In an optional embodiment, the tubular reaction tank 03 integrates a storage tank 09, a reactor 10, an agitator 11, a feed pump 12, a level gauge 13, and a thermometer 14 to achieve more efficient production and monitoring.

[0083] Integrated components:

[0084] Storage tank 09: Ensures temporary storage of raw acid and generated slurry to maintain the continuity of the reaction.

[0085] Reactor 10: Efficiently performs the neutralization reaction of monoammonium phosphate.

[0086] Stirring paddle 11: Ensures uniform reaction and avoids incomplete local reaction.

[0087] Feed pump 12: delivers slurry to buffer tank 06 and slurry storage tank 07.

[0088] Level gauge 13: Monitors the liquid level during the reaction process to prevent over- or under-liquidity.

[0089] Thermometer 14: Monitors reaction temperature to ensure optimal reaction conditions.

[0090] This optional embodiment further improves the integration and automation of production by integrating the storage tank 09, reactor 10, agitator 11, feed pump 12, level gauge 13 and thermometer 14 into the tubular reaction tank 03, optimizes the control of reaction conditions, improves production efficiency and product quality, and ensures the safety and environmental protection of the production process through a series of environmental protection measures.

[0091] In an optional embodiment, the environmental protection trough 04 includes a first sub-environmental protection trough 15 and a second sub-environmental protection trough 16. The first sub-environmental protection trough 15 is connected to the first acid mixing tank 01, the second acid mixing tank 02 and the tubular reaction tank 03, respectively. The second sub-environmental protection trough 16 is connected to the buffer tank 06, the slurry storage tank 07 and the filling platform 08, respectively.

[0092] In this embodiment, the device is further divided into a first sub-environmental protection trench 15 and a second sub-environmental protection trench 16 to achieve more effective waste treatment and environmental protection.

[0093] The first environmental protection tank 15 is used to receive and process waste generated from the first acid mixing tank 01, the second acid mixing tank 02, and the tubular reaction tank 03, protecting the environment and achieving effective waste treatment. It is connected to the first acid mixing tank 01, the second acid mixing tank 02, and the tubular reaction tank 03, and receives and processes the generated waste through pipelines.

[0094] The second environmental protection trough 16 is used to receive and process waste generated from the buffer tank 06, slurry storage tank 07, and filling platform 08, protecting the environment and achieving effective waste treatment. It is connected to the buffer tank 06, slurry storage tank 07, and filling platform 08, and receives and processes the generated waste through pipelines.

[0095] This design, through a refined waste treatment system, effectively diverts and treats waste from different sources, meeting environmental protection requirements and ensuring the safety and environmental friendliness of the production process.

[0096] In an optional embodiment, a first return pipe 17 is provided on the pipe connecting the tubular reaction tank 03 and the buffer tank 06, and the first return pipe 17 returns to the tubular reaction tank 03.

[0097] In this optional embodiment, a first reflux pipe 17 is provided between the tubular reaction tank 03 and the buffer tank 06 to improve reaction efficiency and slurry quality control.

[0098] The first reflux line 17 is installed on the pipeline connecting the tubular reaction tank 03 and the buffer tank 06. It is used to reflux a portion of the liquid or slurry generated during the reaction process back to the tubular reaction tank 03. Through this reflux mechanism, the liquid flow and component uniformity during the reaction process can be adjusted, improving reaction efficiency and product quality consistency. This reflux line is installed in the pipeline between the tubular reaction tank 03 and the buffer tank 06 to ensure the circulation and balance of liquid and slurry during the reaction process.

[0099] This design, through the setting of the reflux pipeline, effectively optimizes the slurry flow between the tubular reaction tank 03 and the buffer tank 06, improves the operational flexibility and reaction efficiency in the production process, and helps to ensure the stability and consistency of product quality.

[0100] In an optional embodiment, a second return pipe 18 is provided on the pipeline connecting the slurry storage tank 07 and the filling platform 08, and the second return pipe 18 returns the slurry to the slurry storage tank 07.

[0101] In this optional embodiment, a second return pipeline 18 is provided between the slurry storage tank 07 and the filling platform 08 to optimize the slurry conveying process and improve filling efficiency.

[0102] The second return pipeline 18 is installed on the pipeline connecting the slurry storage tank 07 and the filling platform 08. It is used to return a portion of the slurry flowing back from the filling platform 08 to the slurry storage tank 07. Through this return mechanism, the flow and distribution of the slurry during the filling process can be regulated, ensuring the stability and consistency of the slurry. This return pipeline, installed in the pipeline between the slurry storage tank 07 and the filling platform 08, ensures the circulation and balance of the slurry during the filling process, improving production efficiency and product quality consistency.

[0103] This design, through the setting of the second return pipe 18, effectively optimizes the slurry conveying and filling process, reduces waste, and improves the efficiency and flexibility of the production line, which helps to ensure product quality and production stability.

[0104] In an optional embodiment, the first acid mixing tank 01 is connected to the second acid mixing tank 02, and the second acid mixing tank 02 receives acid from the first acid mixing tank 01 through a connected pipeline.

[0105] In this optional embodiment, the first acid mixing tank 01 and the second acid mixing tank 02 are connected by a pipeline to realize the transfer and management of acid mixing, so as to ensure the effective preparation and use of raw acid.

[0106] The first acid mixing tank 01 and the second acid mixing tank 02 are connected directly via pipelines. The first acid mixing tank 01 supplies raw acid to the second acid mixing tank 02, ensuring that the second acid mixing tank 02 can always obtain the required acid in a timely manner. The pipeline configuration allows flow from the first acid mixing tank 01 to the second acid mixing tank 02, enabling flexible adjustment and use of raw acid during production to meet specific production needs.

[0107] This design allows the raw acid to flow and be distributed effectively between different acid mixing tanks, ensuring stability and efficiency in the production process and guaranteeing the timely supply and use of the raw materials required for production.

[0108] In an optional embodiment, the tubular reaction tank 03 is provided with an ejector 19.

[0109] In this optional embodiment, an ejector 19 is installed in the tubular reaction tank 03 and is connected to the DAP (ammonium dihydrogen phosphate) liquid ammonia pipeline to enhance mixing and reaction efficiency during the reaction process.

[0110] Ejector 19 is installed inside the tubular reaction tank 03. Ejector 19 is used to introduce a high-speed liquid flow into the tubular reaction tank 03 to enhance the mixing and stirring effect of the reaction liquid. The ejector 19 effectively promotes the mixing of the raw material acid and DAP liquid ammonia during the reaction process, improving reaction efficiency and the uniformity of product quality. Ejector 19 is connected to the DAP liquid ammonia pipeline 20 to ensure timely supply and mixing of the liquid during the reaction process.

[0111] This design utilizes the high-speed liquid flow of the jet injector 19 to effectively improve the mixing effect inside the tubular reaction tank 03, thereby enhancing the efficiency of the production process and the consistency of product quality.

[0112] In this device, pneumatic valves, flow meters, and pumps can be installed on various pipelines. These devices play a crucial role in the entire production process, ensuring the accuracy, safety, and efficiency of the operation.

[0113] Pneumatic valves are used to control the flow and pressure of fluids in pipelines. They can be remotely or automatically controlled to regulate flow or block fluid flow. Pneumatic valves can be installed on pipelines requiring fluid control, such as acid mixing tanks, reaction tanks, and slurry storage tanks. By opening and closing, they regulate the flow and pressure of fluids, ensuring the safety and stability of fluid transport during the production process.

[0114] Flow meters are used to measure the velocity or volumetric flow rate of fluids in pipelines, providing accurate fluid measurement. Flow meters can be installed on pipelines where fluid flow needs to be monitored, such as acid inlet / outlet lines and slurry delivery lines. By monitoring and recording the fluid velocity or flow rate, fluid usage control and quality management during the production process are ensured.

[0115] Pumps are used to propel fluids through pipelines, increasing their pressure and velocity. Pumps can be installed on pipelines where increased fluid pressure or propelled flow is required, such as at the outlet of an acid mixing tank or the outlet of a slurry storage tank. Through the action of pumps, the smooth transport of fluids and necessary flow control during the production process are ensured, guaranteeing the continuity and efficiency of production operations.

[0116] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for direct supply of battery-grade monoammonium phosphate slurry, characterized in that, include: The first and second acid mixing tanks are used for storing and preparing raw acid. The tubular reaction tank is connected to the first acid mixing tank and the second acid mixing tank respectively, and receives production acid through the connected pipelines; The environmental protection tank is connected to the first acid mixing tank, the second acid mixing tank, the washing tower, the tubular reaction tank, and the slurry storage tank, respectively, and is used to receive waste materials; A scrubbing tower, connected to the tubular reaction tank, is used to receive the waste gas discharged from the tubular reaction tank and to scrub the waste gas. A buffer tank is connected to the tubular reactor and receives the slurry output from the tubular reactor through a connected pipeline. A slurry storage tank is connected to the buffer tank and receives and stores the slurry output from the buffer tank through a connected pipeline. The filling platform is connected to the slurry storage tank and receives the slurry output from the slurry storage tank through the connected pipeline, and fills the tank truck.

2. The direct supply device for battery-grade monoammonium phosphate slurry according to claim 1, characterized in that, The tubular reaction tank integrates a storage tank, a reactor, a stirring paddle, a feed pump, a level gauge, and a thermometer.

3. The direct supply device for battery-grade monoammonium phosphate slurry according to claim 1, characterized in that, The environmental protection trough includes a first sub-environmental protection trough and a second sub-environmental protection trough. The first sub-environmental protection trough is connected to the first acid mixing tank, the second acid mixing tank and the tubular reaction tank, respectively. The second sub-environmental protection trough is connected to the buffer tank, the slurry storage tank and the filling platform, respectively.

4. The direct supply device for battery-grade monoammonium phosphate slurry according to claim 1, characterized in that, A first reflux pipeline is provided on the pipeline connecting the tubular reaction tank and the buffer tank, and the first reflux pipeline returns the flow to the tubular reaction tank.

5. The direct supply device for battery-grade monoammonium phosphate slurry according to claim 1, characterized in that, A second return pipe is provided on the pipeline connecting the slurry storage tank and the filling platform, and the second return pipe returns the slurry to the slurry storage tank.

6. The direct supply device for battery-grade monoammonium phosphate slurry according to claim 1, characterized in that, The first acid mixing tank is connected to the second acid mixing tank, and the second acid mixing tank receives acid from the first acid mixing tank through a connecting pipeline.

7. The direct supply device for battery-grade monoammonium phosphate slurry according to claim 1, characterized in that, The tubular reaction tank is equipped with an ejector.

8. The direct supply device for battery-grade monoammonium phosphate slurry according to claim 7, characterized in that, The jet injector is connected to the DAP liquid ammonia pipeline.

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