Device for rapidly settling phosphoric acid

Abstract

The utility model discloses a device for rapidly settling phosphoric acid. The device is used for reducing the MER value of phosphoric acid. The device for rapidly settling phosphoric acid comprises a settling agent tank, a raw material tank, a dispensing tank, a dispensing buffer tank, a neutralizing tank and a clarifying tank, outlets of the settling agent tank and the raw material tank are respectively connected to the dispensing tank through a siphon, a medicine pumping motor and a pipeline, an outlet of the dispensing tank is connected to an inlet of the dispensing buffer tank through a pump and a pipeline, an outlet of the dispensing buffer tank is connected to a first inlet of the neutralizing tank through a flow meter and a pipeline, and an outlet of the neutralizing tank is connected with an inlet of the clarifying tank; the settling agent tank is used for storing a settling agent, the raw material tank is used for storing raw materials for preparing a medicament, the dispensing tank is used for preparing the medicament, the dispensing buffer tank is used for storing the prepared medicament and maintaining the stability of the medicament, the neutralizing tank is used for enabling phosphoric acid to react with the medicament, and the clarifying tank is used for settling the phosphoric acid passing through the neutralizing tank.

Description

Technical Field

[0001] The present application relates to the technical field of phosphoric acid production, and in particular to a device for rapid precipitation of phosphoric acid. Background Art

[0002] In ammonium phosphate production facilities, the quality of phosphoric acid directly determines the quality, output, and cost of core products in the DAP and MAP stages. In recent years, with the widespread mining and utilization of mineral resources, fluctuations in ore quality have become increasingly significant. Specifically, due to the uneven and sometimes elevated levels of naturally occurring impurities such as iron, magnesium, and aluminum in ore sources, these impurities are difficult to completely remove during the raw acid preparation process and are subsequently carried over into the finished phosphoric acid product. High levels of impurities such as iron, magnesium, and aluminum not only increase the impurity load of phosphoric acid but also significantly affect its physical and chemical properties, such as significantly slowing the clarification of concentrated phosphoric acid. This, in turn, negatively impacts the production of fertilizers using phosphoric acid as a raw material. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides a device for rapid precipitation of phosphoric acid, comprising: a precipitant tank, a raw material tank, a dispensing tank, a dispensing buffer tank, a neutralization tank and a clarification tank;

[0004] The outlets of the precipitant tank and the raw material tank are respectively connected to the dispensing tank through a siphon, a drug extraction motor and a pipeline. The outlet of the dispensing tank is connected to the inlet of the dispensing buffer tank through a pump and a pipeline. The outlet of the dispensing buffer tank is connected to the first inlet of the neutralization tank through a flow meter and a pipeline. The outlet of the neutralization tank is connected to the inlet of the clarification tank. The precipitant tank is used to store the precipitant, the raw material tank is used to store the raw materials for dispensing the drug, the dispensing tank is used to dispensing the drug, the dispensing buffer tank is used to store the prepared drug and maintain the stability of the drug, the neutralization tank is used to make phosphoric acid react with the drug, and the clarification tank is used to precipitate the phosphoric acid passing through the neutralization tank.

[0005] Optionally, the dispensing tank is further provided with a stirring paddle motor and a liquid level meter.

[0006] Optionally, the volume of the dispensing tank is 10.75 cubic meters.

[0007] Optionally, the dispensing buffer tank is further provided with a stirring paddle motor and a liquid level meter.

[0008] Optionally, the volume of the dispensing buffer tank is 10 cubic meters.

[0009] Optionally, the neutralization tank is further provided with a stirring paddle motor and a second inlet, and the second inlet is connected to the phosphoric acid storage tank.

[0010] Optionally, a programmable logic controller is further included, and the device for rapid precipitation of phosphoric acid is connected to a distributed control system via the programmable logic controller.

[0011] Optionally, the upper outlet of the clarification tank is connected to the clarified liquid storage tank, and the lower outlet of the clarification tank is connected to the filter residue tank.

[0012] It can be seen from the above technical solutions that this application has the following advantages:

[0013] The present application provides a device for rapid sedimentation of phosphoric acid, comprising: a precipitant tank, a raw material tank, a dispensing tank, a dispensing buffer tank, a neutralization tank, and a clarification tank; the outlets of the precipitant tank and the raw material tank are respectively connected to the dispensing tank via a siphon, a drug extraction motor, and a pipeline; the outlet of the dispensing tank is connected to the inlet of the dispensing buffer tank via a pump and a pipeline; the outlet of the dispensing buffer tank is connected to the first inlet of the neutralization tank via a flow meter and a pipeline; and the outlet of the neutralization tank is connected to the inlet of the clarification tank; the precipitant tank is used to store the precipitant, the raw material tank is used to store the raw materials for dispensing the drug, the dispensing tank is used to dispensing the drug, the dispensing buffer tank is used to store the prepared drug and maintain the stability of the drug, the neutralization tank is used to react the phosphoric acid with the drug, and the clarification tank is used to precipitate the phosphoric acid that has passed through the neutralization tank. The reagent prepared by the dispensing tank in the present application is a new precipitant that can improve the sedimentation rate and efficiency of phosphoric acid. The reagent and phosphoric acid are fully reacted in the neutralization tank, and the solid-liquid mixture produced after the reaction is then sent into the clarification tank for sedimentation, thereby eliminating the negative impact of excessive impurities in phosphate rock on the production of phosphoric acid products and improving the production efficiency of phosphoric acid products. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of an embodiment of the device for rapid precipitation of phosphoric acid provided in this application. DETAILED DESCRIPTION

[0015] In order to solve the above technical problems, the present application provides a device for rapid precipitation of phosphoric acid, which is used to reduce the MER value of phosphoric acid.

[0016] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only used to illustrate the relative position relationship between the various components or components, and do not particularly limit the specific installation orientation of the various components or components.

[0017] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0018] It should also be noted that the terms "first", "second", etc. in the specification and drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order, sequence or importance.

[0019] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0020] In addition, the structures, proportions, sizes, etc. drawn in the drawings in this application are only used to match the contents disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0021] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in this application. Obviously, the embodiments described are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] See also Figure 1 The present application provides a device for rapid precipitation of phosphoric acid, which includes: a precipitant tank 01, a raw material tank 02, a dispensing tank 03, a dispensing buffer tank 04, a neutralization tank 05 and a clarification tank 06;

[0023] The outlets of the precipitant tank 01 and the raw material tank 02 are connected to the dispensing tank 03 through the siphon 07, the drug extraction motor 08 and the pipeline respectively. The outlet of the dispensing tank 03 is connected to the inlet of the dispensing buffer tank 04 through the pump 12 and the pipeline. The outlet of the dispensing buffer tank 04 is connected to the first inlet of the neutralization tank 05 through the flow meter 11 and the pipeline. The outlet of the neutralization tank 05 is connected to the inlet of the clarification tank 06; the precipitant tank 01 is used to store the precipitant, the raw material tank 02 is used to store the raw materials for dispensing the drug, the dispensing tank 03 is used to dispensing the drug, the dispensing buffer tank 04 is used to store the prepared drug and maintain the stability of the drug, the neutralization tank 05 is used to make the phosphoric acid react with the drug, and the clarification tank 06 is used to precipitate the phosphoric acid passing through the neutralization tank 05.

[0024] First, the various components in this embodiment are introduced below:

[0025] Sedimentation Tank 01: Used to store sedimentation, one of the raw materials used to prepare new pharmaceuticals. Its walls are made of high-strength, corrosion-resistant metal. Sedimentation Tank 01 is also equipped with accessories such as a pressure gauge, thermometer, and safety valve. The sedimentation tank's contents are drawn through siphon tube 07 and pumped by pump motor 08 to dispensing buffer tank 04, where it participates in pharmaceutical preparation.

[0026] Raw Material Tank 02: This holds raw materials other than the precipitant. These raw materials are mixed with the precipitant in a specific ratio to create the new drug. Similar to the precipitant tank 01, Raw Material Tank 02 is also equipped with accessories such as a pressure gauge, thermometer, and safety valve. The outlet of Raw Material Tank 02 is connected to the drug dispensing tank 03 via a siphon tube 07, a drug extraction motor 08, and a pipeline.

[0027] Dispensing Tank 03: Used for dispensing the drug. The precipitant and raw materials are transported to Dispensing Tank 03, where they are mixed and reacted to form a new drug. This drug can quickly precipitate the metal ions in phosphoric acid, thereby reducing the MER value of phosphoric acid.

[0028] Dispensing Buffer Tank 04: Used to store prepared reagents. Because the MER value and total dosage of the phosphoric acid to be clarified vary, the amount of reagent added each time needs to be controlled. Therefore, a container for the prepared reagents, Dispensing Buffer Tank 04, is required. Dispensing Buffer Tank 04 maintains the effectiveness and stability of the reagents.

[0029] Neutralization Tank 05: Used to react phosphoric acid with the reagent to precipitate the metal ions in the phosphoric acid. After the phosphoric acid reacts with the reagent in Neutralization Tank 05, a solid-liquid mixture is formed.

[0030] Clarification Tank 06: This is used to settle the phosphoric acid, or solid-liquid mixture, after the reaction in Neutralization Tank 05. Clarification Tank 06 is divided into two sections: the upper section is a cylindrical tank, and the lower section is an inverted conical tank. After a period of stagnation, the solid-liquid mixture separates into separate layers. The upper section of Clarification Tank 06 contains clarified phosphoric acid liquid, which has a qualified MER value, meaning that the metal impurities in the phosphoric acid have been removed to meet production standards. This phosphoric acid can be used as a raw material for subsequent product production. The lower section of Clarification Tank 06 contains the residual residue from clarification, which can be used elsewhere after further processing.

[0031] In this embodiment, the outlets of the precipitant tank 01 and the raw material tank 02 are respectively connected to the dispensing tank 03 through the siphon tube 07, the drug extraction motor 08 and the pipeline, the outlet of the dispensing tank 03 is connected to the inlet of the dispensing buffer tank 04 through the pump 12 and the pipeline, the outlet of the dispensing buffer tank 04 is connected to the first inlet of the neutralization tank 05 through the flow meter 11 and the pipeline, and the outlet of the neutralization tank 05 is connected to the inlet of the clarification tank 06; the precipitant tank 01 is used to store the precipitant, the raw material tank 02 is used to store the raw materials for dispensing the drug, the dispensing tank 03 is used to dispensing the drug, the dispensing buffer tank 04 is used to store the prepared drug and maintain the stability of the drug, the neutralization tank 05 is used to make the phosphoric acid react with the drug, and the clarification tank 06 is used to precipitate the phosphoric acid passing through the neutralization tank 05. The reagent prepared by the dispensing tank 03 in the present application is a new precipitant that can increase the sedimentation rate and efficiency of phosphoric acid. The reagent and phosphoric acid fully react in the neutralization tank, and the resulting solid-liquid mixture then enters the clarification tank 06 for sedimentation, thereby eliminating the negative impact of excessive impurities in phosphate rock on the production of phosphoric acid products and improving the production efficiency of phosphoric acid products.

[0032] In an optional embodiment, the dispensing tank 03 is further provided with a stirring paddle motor 09 and a liquid level meter 10 .

[0033] In an optional embodiment, the volume of the medicine dispensing tank 03 is 10.75 cubic meters.

[0034] In the two alternative embodiments described above, the dispensing tank 03, a key component for preparing the phosphoric acid treatment agent, has a capacity of 10.75 cubic meters to meet production requirements. A stirring paddle motor 09 is installed within the tank, which drives the paddle to rotate and ensure uniform mixing of the sedimentation agent and raw materials within the tank. A liquid level gauge 10 is also installed on the tank to monitor the agent level in real time, allowing for timely replenishment or cessation of sedimentation agent and raw material additions to ensure stable concentration.

[0035] In an optional embodiment, the dispensing buffer tank 04 is further provided with a stirring paddle motor 09 and a liquid level meter 10 .

[0036] In an optional embodiment, the volume of the pharmaceutical buffer tank 04 is 10 cubic meters.

[0037] In the two alternative embodiments described above, to accommodate the volume of dispensing tank 03 and production requirements, dispensing buffer tank 04 is set to 10 cubic meters to ensure a consistent supply of medication. Similar to dispensing tank 03, dispensing buffer tank 04 is also equipped with a stirring paddle motor 09 and a liquid level gauge 10. The stirring paddle motor 09 ensures a uniform distribution of medication within the tank, preventing sedimentation; the liquid level gauge 10 monitors medication inventory to facilitate timely adjustments to production plans.

[0038] In an optional embodiment, the neutralization tank 05 is further provided with a stirring paddle motor 09 and a second inlet, and the second inlet is connected to the phosphoric acid storage tank.

[0039] In this optional embodiment, the neutralization tank 05 is the core component for rapid phosphoric acid sedimentation. It houses a stirring paddle motor 09 to promote thorough mixing and reaction between the phosphoric acid and the reagent. Furthermore, the neutralization tank 05 has a second inlet, directly connected to the phosphoric acid storage tank, facilitating the introduction of the phosphoric acid solution to be processed into the neutralization tank 05. By precisely controlling the amount of reagent added and the reaction time, rapid phosphoric acid sedimentation can be achieved.

[0040] In an optional embodiment, a programmable logic controller is further included, and the device for rapid precipitation of phosphoric acid is connected to the distributed control system via the programmable logic controller.

[0041] In this optional embodiment, the device of phosphoric acid rapid sedimentation of the present application is realized by programmable logic controller (PLC) and realizes automatic control. The PLC receives the signal from each sensor (such as liquid level meter 10 and flow meter 11 etc.), and according to the preset program logic, the actuators such as stirring paddle motor 09 and medicine pumping motor 08 are accurately controlled. At the same time, the PLC is also connected with the distributed control system to realize remote monitoring and data transmission function. The operating personnel can view the device operating status, adjust the control parameters and receive fault alarm information in real time through the distributed control system interface, thereby ensuring the safe and stable operation of the device.

[0042] In an optional embodiment, the upper outlet of the clarification tank 06 is connected to the clarified liquid storage tank, and the lower outlet of the clarification tank 06 is connected to the filter residue tank.

[0043] In this alternative embodiment, the phosphoric acid solution, after sedimentation in neutralization tank 05, enters clarification tank 06 for further solid-liquid separation. The upper outlet of clarification tank 06 is connected to a clarified liquid storage tank for collecting and storing the clarified phosphoric acid solution; the lower outlet is connected to a residue tank for discharging solid residues produced by sedimentation. The design of clarification tank 06 fully considers sedimentation efficiency and solid-liquid separation to ensure the quality of the final product.

[0044] It should be noted that the above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for rapid precipitation of phosphoric acid, characterized in that: include: Sedimentation tanks, raw material tanks, dispensing tanks, dispensing buffer tanks, neutralization tanks and clarification tanks; The outlets of the precipitant tank and the raw material tank are respectively connected to the dispensing tank through a siphon, a drug extraction motor and a pipeline. The outlet of the dispensing tank is connected to the inlet of the dispensing buffer tank through a pump and a pipeline. The outlet of the dispensing buffer tank is connected to the first inlet of the neutralization tank through a flow meter and a pipeline. The outlet of the neutralization tank is connected to the inlet of the clarification tank. The precipitant tank is used to store the precipitant, the raw material tank is used to store the raw materials for dispensing the drug, the dispensing tank is used to dispensing the drug, the dispensing buffer tank is used to store the prepared drug and maintain the stability of the drug, the neutralization tank is used to make phosphoric acid react with the drug, and the clarification tank is used to precipitate the phosphoric acid passing through the neutralization tank.

2. The device for rapid precipitation of phosphoric acid according to claim 1, characterized in that The medicine dispensing tank is also provided with a stirring paddle motor and a liquid level meter.

3. The device for rapid sedimentation of phosphoric acid according to claim 2, characterized in that The volume of the dispensing tank is 10.75 cubic meters.

4. The device for rapid precipitation of phosphoric acid according to claim 1, characterized in that The dispensing buffer tank is also provided with a stirring paddle motor and a liquid level meter.

5. The device for rapid precipitation of phosphoric acid according to claim 4, characterized in that: The volume of the dispensing buffer tank is 10 cubic meters.

6. The device for rapid precipitation of phosphoric acid according to claim 1, characterized in that: The neutralization tank is further provided with a stirring paddle motor and a second inlet, and the second inlet is connected to the phosphoric acid storage tank.

7. The device for rapid precipitation of phosphoric acid according to any one of claims 1 to 6, characterized in that: The device also includes a programmable logic controller, and the phosphoric acid rapid sedimentation device is connected to a distributed control system through the programmable logic controller.

8. The device for rapid precipitation of phosphoric acid according to any one of claims 1 to 6, characterized in that: The upper outlet of the clarification tank is connected to the clarified liquid storage tank, and the lower outlet of the clarification tank is connected to the filter residue tank.

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