Automatic control system and method for ion exchange resin elution and transformation

Abstract

The application provides an ion exchange resin elution and transformation automatic control system and method, and belongs to the field of in-situ leaching uranium hydrometallurgy control. The system comprises a monitoring device, a controller, an air control device, an adsorption control device, an elution control device and a transformation control device. The monitoring device detects key process parameters in the elution and transformation process. The controller generates air control signals, adsorption control signals, elution control signals and transformation control signals according to the key process parameters in the elution and transformation process, and then controls air to enter or exit the ion exchange tower through the air control device, controls adsorption tail liquid to exit the ion exchange tower through the adsorption control device, controls eluent to enter the ion exchange tower through the elution control device, controls eluent to exit the ion exchange tower, controls transformation agent to enter the ion exchange tower through the transformation control device, and controls transformation waste liquid to exit the ion exchange tower. The application improves the efficiency and accuracy of ion exchange resin elution and transformation.

Description

Technical Field

[0001] The present invention relates to the field of in-situ uranium leaching and hydrometallurgical control, and in particular to an ion exchange resin leaching and transformation automatic control system and method. Background Art

[0002] In-situ uranium leaching involves injecting a formulated leachant into an injection well. The leachant reacts chemically with uranium minerals in the ore-bearing aquifer, producing a uranium-containing leachate. This leachate is then brought to the surface, treated through hydrometallurgical processes, and ultimately processed into uranium products. During the hydrometallurgical process, uranium in the leachate is typically separated and enriched using ion exchange. This method involves adsorbing uranyl ions in the leachate onto an ion exchange resin. Once the resin reaches saturation, the uranyl ions are eluted using a specific eluent. The depleted resin undergoes a transformation process and is then recycled. As the resin leaches, the uranium concentration in the eluate gradually decreases. Based on the uranium concentration, the eluate is separated into a qualified solution and a depleted solution. The qualified solution can be directly precipitated to produce uranium products, while the depleted solution contains a large amount of eluent, which can be used for the next resin leaching. Because ions with stronger adsorption to the resin are required to leach uranyl ions, common uranium eluents are sodium chloride or nitrate solutions. These two eluents require small leaching volumes and offer high leaching efficiency. Lean resins after leaching absorb large amounts of chloride or nitrate. If recycled directly without undergoing a transformation treatment, the chloride or nitrate will be injected into the formation along with the adsorption tail liquid, causing groundwater pollution. Accumulating to a certain level will also reduce the resin's adsorption performance. Currently, the adsorption tail liquid is often used to transform the lean resin after leaching. This method can effectively remove the chloride or nitrate on the lean resin, avoiding problems such as groundwater pollution and reduced resin adsorption performance. It also eliminates the need for additional transformation agents, reducing reagent consumption.

[0003] At present, in the in-situ uranium ion exchange process, the resin leaching and transformation process links have not yet been automated, and all rely on manual completion by on-duty personnel. In addition, the process operation is heavily dependent on the analysis results. This not only increases the workload of on-duty personnel and analysts, but also prevents related operations from being carried out in a timely and accurate manner, making it difficult to strictly control process parameters. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic control system and method for ion exchange resin elution and transformation, which can realize automatic control of ion exchange resin elution and transformation and improve the efficiency and accuracy of ion exchange resin elution and transformation.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] An ion exchange resin elution and transformation automatic control system is used to control the elution and transformation of the ion exchange resin by the ion exchange tower. The ion exchange resin elution and transformation automatic control system includes:

[0007] a monitoring device connected to the ion exchange tower, for detecting the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the conversion agent entering the ion exchange tower, and the concentration of chloride or nitrate in the conversion waste liquid discharged from the ion exchange tower;

[0008] a controller connected to the monitoring device, configured to generate an air control signal, an adsorption control signal, a leaching control signal, and a transformation control signal based on the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower, and the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower;

[0009] an air control device, connected to the ion exchange tower and the controller, respectively, for controlling air to enter or exit the ion exchange tower based on the air control signal;

[0010] an adsorption control device, connected to the ion exchange tower and the controller, respectively, for controlling the adsorption tail liquid to be discharged from the ion exchange tower based on the adsorption control signal;

[0011] an elution control device, connected to the ion exchange tower and the controller, respectively, for controlling the eluent to enter the ion exchange tower and controlling the eluent to exit the ion exchange tower based on the elution control signal;

[0012] The transformation control device is connected to the ion exchange tower and the controller respectively, and is used to control the transformation agent to enter the ion exchange tower and control the transformation waste liquid to be discharged from the ion exchange tower based on the transformation control signal.

[0013] Optionally, the ion exchange tower is provided with an air inlet, an exhaust port, an eluent inlet, an eluent outlet, a transformation agent inlet, a transformation waste liquid outlet and an adsorption tail liquid outlet;

[0014] The air inlet is connected to an air inlet pipeline; the air outlet is connected to an exhaust pipeline;

[0015] The eluent inlet is connected to an eluent inlet pipeline; the eluent outlet is connected to an eluent outlet pipeline; the eluent outlet pipeline is also connected to a qualified liquid pipeline and a lean liquid pipeline respectively;

[0016] The transformation agent inlet is connected with a transformation agent inlet pipeline; and the transformation waste liquid outlet is connected with a transformation waste liquid outlet pipeline.

[0017] The adsorption tail liquid outlet is connected with an adsorption tail liquid pipeline.

[0018] Optionally, the monitoring device comprises:

[0019] An electric liquid level meter is arranged on the exhaust pipeline to detect the liquid level in the ion exchange tower.

[0020] An adsorption tail liquid electromagnetic flow meter is arranged on the adsorption tail liquid pipeline to detect the flow rate of the adsorption tail liquid discharged from the ion exchange tower.

[0021] A lean liquid electromagnetic flow meter is arranged on the lean liquid pipeline to detect the flow rate of the lean liquid discharged from the ion exchange tower; and the liquid flow rate at the outlet of the ion exchange tower comprises the adsorption tail liquid flow rate and the lean liquid flow rate.

[0022] A uranium concentration on-line analyzer is arranged on the elution liquid outlet pipeline to detect the uranium concentration of the liquid discharged from the ion exchange tower.

[0023] A transformation agent chloride or nitrate concentration on-line analyzer is arranged on the transformation agent inlet pipeline to detect the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower.

[0024] A transformation waste liquid chloride or nitrate concentration on-line analyzer is arranged on the transformation waste liquid outlet pipeline to detect the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower.

[0025] Optionally, the air control device comprises an air compressor, an air inlet valve and an air exhaust valve.

[0026] The air compressor and the air inlet valve are arranged on the air inlet pipeline, and the air inlet valve is located between the air compressor and the air inlet; and the air exhaust valve is arranged on the air exhaust pipeline.

[0027] The air control signal is used to control the operating state of the air compressor, the air inlet valve and the air exhaust valve.

[0028] Optionally, the adsorption control device comprises an adsorption tail liquid valve; and the adsorption control signal is used to control the operating state of the adsorption tail liquid valve.

[0029] Optionally, the elution control device comprises an eluent pump, an eluent valve, an elution liquid valve, a qualified liquid valve and a lean liquid valve.

[0030] The eluent pump and the eluent valve are both arranged on the eluent inlet pipeline, and the eluent valve is located between the eluent pump and the eluent inlet;

[0031] The eluent valve is arranged on the eluent outlet pipeline;

[0032] The qualified liquid valve is arranged on the qualified liquid pipeline;

[0033] The lean liquid valve is arranged on the lean liquid pipeline;

[0034] The elution control signal is used to control the operating states of the eluent pump, the eluent valve, the eluent valve, the qualified liquid valve, and the lean liquid valve.

[0035] Optionally, the transformation control equipment includes: a transformation agent pump, a transformation agent valve and a transformation waste liquid valve;

[0036] The transformation agent pump and the transformation agent valve are both arranged on the transformation agent liquid inlet pipeline, and the transformation agent valve is located between the transformation agent pump and the transformation agent liquid inlet;

[0037] The transformation waste liquid valve is arranged on the transformation waste liquid outlet pipeline;

[0038] The transformation control signal is used to control the operating states of the transformation agent pump, the transformation agent valve, and the transformation waste liquid valve.

[0039] To achieve the above object, the present invention also provides the following solution:

[0040] An automatic control method for eluting and transforming an ion exchange resin, comprising:

[0041] The monitoring equipment is used to detect the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the conversion agent entering the ion exchange tower, and the concentration of chloride or nitrate in the conversion waste liquid discharged from the ion exchange tower;

[0042] generating, by a controller, an air control signal, an adsorption control signal, a leaching control signal, and a transformation control signal according to the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower, and the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower;

[0043] controlling air to enter or be exhausted from the ion exchange tower based on the air control signal through an air control device;

[0044] controlling the adsorption tail liquid to be discharged from the ion exchange tower based on the adsorption control signal by an adsorption control device;

[0045] Based on the elution control signal, the elution control device controls the eluent to enter the ion exchange tower and controls the eluent to be discharged from the ion exchange tower;

[0046] Based on the transformation control signal, the transformation agent is controlled to enter the ion exchange tower, and the transformation waste liquid is controlled to be discharged from the ion exchange tower.

[0047] Optionally, the liquid flow at the outlet of the ion exchange tower includes the adsorption tail liquid flow and the lean liquid flow;

[0048] The air control signal includes an intake start signal, an intake stop signal, an exhaust start signal, and an exhaust stop signal;

[0049] The adsorption control signal includes a start adsorption tail liquid discharge signal and a stop adsorption tail liquid discharge signal;

[0050] The elution control signal includes an eluent entry start signal, an eluent entry stop signal, an eluent discharge start signal, and an eluent discharge stop signal;

[0051] The transformation control signal includes a transformation agent entry start signal, a transformation agent entry stop signal, a transformation waste liquid discharge start signal, and a transformation waste liquid discharge stop signal;

[0052] Generate an air control signal, an adsorption control signal, a leaching control signal, and a transformation control signal according to the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower, and the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower, specifically including:

[0053] Generate an air intake start signal and a tail liquid adsorption start discharge signal to control air to enter the ion exchange tower and control the tail liquid adsorption to be discharged from the ion exchange tower;

[0054] When the flow rate of the adsorption tail liquid at the outlet of the ion exchange tower is 0, a stop air intake signal, a stop adsorption tail liquid discharge signal, a start exhaust signal and a start eluent entry signal are generated to control the air to stop entering the ion exchange tower, control the adsorption tail liquid to stop discharging the ion exchange tower, control the air to discharge the ion exchange tower, and control the eluent to enter the ion exchange tower;

[0055] When the liquid level in the ion exchange tower reaches the top of the ion exchange tower, a stop exhaust signal and a start eluent discharge signal are generated to control the air to stop being discharged from the ion exchange tower and the eluent to be discharged from the ion exchange tower;

[0056] When the uranium concentration of the liquid discharged from the ion exchange tower is lower than the set uranium concentration for ending elution, a signal for stopping the entry of the eluent and a signal for starting the air intake are generated to control the eluent to stop entering the ion exchange tower and control the air to enter the ion exchange tower;

[0057] When the lean liquid flow rate at the outlet of the ion exchange tower is 0, a stop air intake signal, a stop eluent discharge signal, a start exhaust signal, and a start transition agent entry signal are generated to control the air to stop entering the ion exchange tower, the eluent to stop discharging the ion exchange tower, the air to discharge the ion exchange tower, and the transition agent to enter the ion exchange tower;

[0058] When the liquid level in the ion exchange tower reaches the top of the ion exchange tower, a stop exhaust signal and a start transformation waste liquid discharge signal are generated to control the air to stop being discharged from the ion exchange tower and control the transformation waste liquid to be discharged from the ion exchange tower;

[0059] When the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower is greater than or equal to the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower, a signal for stopping the transformation agent from entering the ion exchange tower and a signal for stopping the transformation waste liquid from discharging the ion exchange tower are generated to control the transformation agent to stop entering the ion exchange tower and to control the transformation waste liquid to stop discharging the ion exchange tower.

[0060] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects: the present invention uses monitoring equipment to perform online monitoring of important parameters such as the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower, and the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower. According to the monitoring results of the key parameters of the elution and transformation process, the present invention automatically controls the air to enter or exit the ion exchange tower, automatically controls the adsorption tail liquid to exit the ion exchange tower, automatically controls the eluent to enter the ion exchange tower, automatically controls the eluent to exit the ion exchange tower, automatically controls the transformation agent to enter the ion exchange tower, and automatically controls the transformation waste liquid to exit the ion exchange tower, thereby improving the efficiency and accuracy of ion exchange resin elution and transformation and reducing the workload of analysts and on-duty personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below only represent some of the embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative labor based on these drawings also belong to the protection scope of the present application.

[0062] Figure 1 The schematic diagram of the ion exchange resin elution and transformation automatic control system provided by the present application is shown in the figure.

[0063] Figure 2 The schematic diagram of the ion exchange resin elution and transformation automatic control process is shown in the figure.

[0064] Symbol explanation: 1-ion exchange tower, 2-qualified liquid pool, 3-lean liquid pool, 4-transformation waste liquid pool, 5-adsorption tail liquid pool, V1-inlet valve, V2-adsorption tail liquid valve, V3-eluent valve, V4-outlet valve, V5-elution liquid valve, V6-qualified liquid valve, V7-lean liquid valve, V8-transformation agent valve, V9-transformation waste liquid valve, W-air compressor, R1-eluent pump, R2-transformation agent pump, F1-adsorption tail liquid electromagnetic flowmeter, F2-lean liquid electromagnetic flowmeter, LT-electric liquid level meter, U-uranium concentration online analyzer, C1-transformation agent chloride or nitrate concentration online analyzer, C2-transformation waste liquid chloride or nitrate concentration online analyzer. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, and all other embodiments obtained by those of ordinary skill in the art without creative labor based on these embodiments also belong to the protection scope of the present application.

[0066] The purpose of the present application is to provide an ion exchange resin elution and transformation automatic control system and method, which realizes automatic control of important process links by online monitoring of key process parameters, reduces the workload of personnel, and improves the timeliness and accuracy of related operations.

[0067] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0068] The ion exchange resin elution and transformation automatic control system and method provided by the present application are used for controlling the ion exchange tower to elute and transform ion exchange resin.

[0069] The ion exchange tower is equipped with an air inlet, an air outlet, an eluent inlet, an eluent outlet, a transition agent inlet, a transition agent waste outlet, and an adsorption tail liquid outlet. The air inlet, air outlet, eluent inlet, and transition agent inlet are all located at the top of the ion exchange tower, while the eluent outlet, transition agent waste outlet, and adsorption tail liquid outlet are all located at the bottom of the ion exchange tower.

[0070] The air inlet is connected to an air inlet pipeline, and the exhaust port is connected to an exhaust pipeline.

[0071] The eluent inlet is connected to the eluent inlet pipeline. The eluent outlet is connected to the eluent outlet pipeline. The eluent outlet pipeline is also connected to the qualified liquid pipeline and the lean liquid pipeline. Figure 1 As shown, the outlet of the qualified liquid pipeline is the qualified liquid pool 2, and the outlet of the lean liquid pipeline is the lean liquid pool 3.

[0072] The transformation agent inlet is connected to a transformation agent inlet pipeline. The transformation waste liquid outlet is connected to a transformation waste liquid outlet pipeline. The inlet of the transformation agent inlet pipeline is the adsorption tail liquid pool 5, and the outlet of the transformation waste liquid outlet pipeline is the transformation wastewater pool 4.

[0073] The adsorption tail liquid outlet is connected to an adsorption tail liquid pipeline, and the outlet of the adsorption tail liquid pipeline is an adsorption tail liquid pool 5.

[0074] The ion exchange resin elution and transformation automatic control system provided by the present invention comprises: monitoring equipment, a controller, an air control equipment, an adsorption control equipment, an elution control equipment and a transformation control equipment.

[0075] The monitoring device is connected to the ion exchange tower and is used to detect the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the conversion agent entering the ion exchange tower, and the concentration of chloride or nitrate in the conversion waste liquid discharged from the ion exchange tower. The liquid flow rate at the outlet of the ion exchange tower includes the flow rate of the adsorption tail liquid and the flow rate of the lean liquid.

[0076] Specifically, if Figure 1 As shown, the monitoring equipment includes: an electric liquid level meter LT, an adsorption tail liquid electromagnetic flowmeter F1, a lean liquid electromagnetic flowmeter F2, an online uranium concentration analyzer U, an online conversion agent chloride or nitrate concentration analyzer C1, and an online conversion waste liquid chloride or nitrate concentration analyzer C2.

[0077] An electric liquid level meter LT is provided on the exhaust pipeline for detecting the liquid level in the ion exchange tower 1 .

[0078] An adsorption tail liquid electromagnetic flowmeter F1 is provided on the adsorption tail liquid pipeline, and is used to detect the flow rate of the adsorption tail liquid discharged from the ion exchange tower 1 .

[0079] The lean liquid electromagnetic flowmeter F2 is arranged on the lean liquid pipeline to detect the flow rate of the lean liquid discharged from the ion exchange tower 1 .

[0080] The uranium concentration online analyzer U is arranged on the eluent outlet pipeline and is used to detect the uranium concentration of the liquid discharged from the ion exchange tower 1.

[0081] The online analyzer C1 for the concentration of chloride or nitrate in the transformation agent is provided on the transformation agent inlet pipeline for detecting the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower 1. In this embodiment, the transformation agent is adsorption tail liquid.

[0082] The online analyzer C2 for chloride or nitrate concentration in the transformation waste liquid is arranged on the transformation waste liquid outlet pipeline, and is used to detect the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower 1 .

[0083] In this embodiment, when the online analyzer C1 for the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower 1 is used to detect the concentration of chloride in the transformation agent, the online analyzer C1 for the concentration of chloride or nitrate in the transformation agent is a transformation agent chloride online analyzer. When the online analyzer C1 for the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower 1 is used to detect the concentration of nitrate in the transformation agent entering the ion exchange tower 1, the online analyzer C1 for the concentration of chloride or nitrate in the transformation agent is a transformation agent nitrate online analyzer. When the online analyzer C2 for the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower 1 is used to detect the concentration of chloride in the transformation waste liquid, the online analyzer C2 for the concentration of chloride or nitrate in the transformation waste liquid is a transformation waste liquid chloride online analyzer. When the online analyzer C2 for the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower 1 is used to detect the concentration of nitrate in the transformation waste liquid, the online analyzer C2 for the concentration of chloride or nitrate in the transformation waste liquid is a transformation waste liquid nitrate online analyzer.

[0084] A controller is connected to the monitoring device and is used to generate an air control signal, an adsorption control signal, a leaching control signal, and a transformation control signal based on the liquid level in the ion exchange tower 1, the liquid flow rate at the outlet of the ion exchange tower 1, the uranium concentration of the liquid discharged from the ion exchange tower 1, the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower 1, and the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower 1.

[0085] In this embodiment, the controller adopts a PLC controller.

[0086] The air control device is connected to the ion exchange tower 1 and the controller respectively, and is used to control the air to enter or be discharged from the ion exchange tower 1 based on the air control signal.

[0087] Specifically, the air control equipment includes: an air compressor W, an intake valve V1 and an exhaust valve V4.

[0088] An air compressor W and an air inlet valve V1 are both installed on the air inlet pipeline, with the air inlet valve V1 located between the air compressor W and the air inlet. An exhaust valve V4 is installed on the exhaust pipeline. An electric liquid level gauge LT is located between the exhaust valve V4 and the exhaust port. Air control signals are used to control the operating status of the air compressor W, the air inlet valve V1, and the exhaust valve V4.

[0089] The adsorption control device is connected to the ion exchange tower 1 and the controller respectively, and is used for controlling the adsorption tail liquid to be discharged from the ion exchange tower 1 based on the adsorption control signal.

[0090] Specifically, the adsorption control device includes an adsorption tail liquid valve V2. An adsorption tail liquid electromagnetic flowmeter F1 is located between the adsorption tail liquid valve V2 and the adsorption tail liquid pool 5. The adsorption control signal is used to control the operating state of the adsorption tail liquid valve V2.

[0091] The elution control device is connected to the ion exchange tower 1 and the controller respectively. The elution control device is used to control the eluent to enter the ion exchange tower 1 and control the eluent to be discharged from the ion exchange tower 1 based on the elution control signal.

[0092] Specifically, the elution control equipment includes: an eluent pump R1, an eluent valve V3, an eluent valve V5, a qualified liquid valve V6 and a lean liquid valve V7.

[0093] The eluent pump R1 and the eluent valve V3 are both provided on the eluent inlet pipeline, and the eluent valve V3 is located between the eluent pump R1 and the eluent inlet.

[0094] The eluent valve V5 is arranged on the eluent outlet pipeline. The uranium concentration online analyzer U is located between the eluent outlet and the eluent valve V5.

[0095] The qualified liquid valve V6 is arranged on the qualified liquid pipeline.

[0096] The lean liquid valve V7 is arranged on the lean liquid pipeline. The lean liquid electromagnetic flowmeter F2 is located between the lean liquid valve V7 and the lean liquid tank 3 .

[0097] The elution control signal is used to control the operating states of the eluent pump R1 , the eluent valve V3 , the eluent valve V5 , the qualified liquid valve V6 , and the lean liquid valve V7 .

[0098] The transformation control device is connected to the ion exchange tower 1 and the controller respectively. The transformation control device is used to control the transformation agent to enter the ion exchange tower 1 and control the transformation waste liquid to be discharged from the ion exchange tower 1 based on the transformation control signal.

[0099] Specifically, the transformation control equipment includes: a transformation agent pump R2, a transformation agent valve V8 and a transformation waste liquid valve V9.

[0100] The transition agent pump R2 and transition agent valve V8 are both installed on the transition agent inlet pipeline, with the transition agent valve V8 located between the transition agent pump R2 and the transition agent inlet. The transition agent chloride or nitrate concentration online analyzer C1 is located between the transition agent valve V8 and the transition agent inlet.

[0101] The transformation waste liquid valve V9 is arranged on the transformation waste liquid outlet pipeline. The transformation waste liquid chloride or nitrate concentration online analyzer C2 is located between the transformation waste liquid valve V9 and the transformation waste liquid outlet.

[0102] The transformation control signal is used to control the operating states of the transformation agent pump R2, the transformation agent valve V8 and the transformation waste liquid valve V9.

[0103] In this embodiment, the air inlet valve V1, the exhaust valve V4, the adsorption tail liquid valve V2, the eluent valve V3, the eluent valve V5, the qualified liquid valve V6, the lean liquid valve V7, the transformation agent valve V8 and the transformation waste liquid valve V9 are all solenoid valves.

[0104] Based on the above-mentioned ion exchange resin elution and transformation automatic control system, an ion exchange resin elution and transformation automatic control method is provided, comprising:

[0105] The monitoring equipment is used to detect the liquid level in the ion exchange tower, the liquid flow at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the conversion agent entering the ion exchange tower, and the concentration of chloride or nitrate in the conversion waste liquid discharged from the ion exchange tower.

[0106] The controller generates an air control signal, an adsorption control signal, a leaching control signal, and a transformation control signal according to the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower, and the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower.

[0107] Air control signals include the start and stop signals for air intake, exhaust start, and exhaust stop. Adsorption control signals include the start and stop signals for adsorption tail liquid discharge. Eluent control signals include the start and stop signals for eluent introduction, eluent introduction, eluent discharge, and eluent discharge. Transformation control signals include the start and stop signals for transformation agent introduction, transformation agent introduction, transformation waste liquid discharge, and transformation waste liquid discharge.

[0108] Air is controlled to enter or be exhausted from the ion exchange tower based on the air control signal by an air control device.

[0109] The adsorption tail liquid is controlled to be discharged from the ion exchange tower based on the adsorption control signal by the adsorption control device.

[0110] Based on the elution control signal, the elution control device controls the eluent to enter the ion exchange tower and controls the eluent to discharge from the ion exchange tower.

[0111] Based on the transformation control signal, the transformation agent is controlled to enter the ion exchange tower, and the transformation waste liquid is controlled to be discharged from the ion exchange tower.

[0112] In order to better understand the technical solution of the present invention, the process of ion exchange resin elution and transformation automatic control is described in detail below.

[0113] (1) All solenoid valves are in the closed state.

[0114] (2) Generate an air intake start signal and an adsorption discharge start signal to control the air to enter the ion exchange tower 1 and the adsorption tail liquid to discharge the ion exchange tower 1. Specifically, open the air intake valve V1, open the adsorption tail liquid valve V2, start the air compressor W, and operate the adsorption tail liquid electromagnetic flowmeter F1.

[0115] (3) When the flow rate of the adsorption tail liquid at the outlet of the ion exchange tower 1 is 0, a stop air intake signal, a stop adsorption tail liquid discharge signal, a start exhaust signal and a start eluent entry signal are generated to control the air to stop entering the ion exchange tower 1, control the adsorption tail liquid to stop discharging the ion exchange tower 1, control the air to be discharged from the ion exchange tower 1, and control the eluent to enter the ion exchange tower 1.

[0116] Specifically, when the adsorption tail liquid flow rate monitored by the adsorption tail liquid electromagnetic flowmeter F1 is 0, the adsorption tail liquid remaining in the ion exchange tower 1 is drained, the air compressor W is stopped, the air inlet valve V1 is closed, the adsorption tail liquid valve V2 is closed, the adsorption tail liquid electromagnetic flowmeter F1 is closed, the eluent valve V3 is opened, the exhaust valve V4 is opened, the eluent pump R1 is started, and the electric liquid level meter LT is operated.

[0117] (4) When the liquid level in the ion exchange tower 1 reaches the top of the ion exchange tower 1, a stop exhaust signal and a start eluent discharge signal are generated to control the air to stop being discharged from the ion exchange tower 1 and to control the eluent to be discharged from the ion exchange tower 1.

[0118] Specifically, when the liquid level monitored by the electric level gauge LT reaches the top of the ion exchange tower 1, the ion exchange tower 1 is filled with eluent, the exhaust valve V4 is closed, the electric level gauge LT is closed, the eluent valve V5 is opened, and the uranium concentration online analyzer U is operated.

[0119] (5) When the uranium concentration of the liquid discharged from the ion exchange tower 1 is lower than the set uranium concentration for ending elution, a signal for stopping the entry of the eluent and a signal for starting the air intake are generated to control the eluent to stop entering the ion exchange tower 1 and control the air to enter the ion exchange tower 1.

[0120] Specifically, the uranium concentration at the end of elution is ρ0, the uranium concentration of the liquid discharged from the ion exchange tower 1 is ρ1, and the minimum uranium concentration of the qualified liquid is ρ2. In this embodiment, ρ0 is 0.1-0.5 g / L and ρ2 is 5.0-10.0 g / L.

[0121] like Figure 2 As shown in the figure, when ρ1≥ρ0, the resin is not completely eluted. When ρ1≥ρ2, the eluent is a qualified liquid, and the qualified liquid valve V6 is opened. When ρ1<ρ2, the eluent is a lean liquid, and the qualified liquid valve V6 is closed and the lean liquid valve V7 is opened.

[0122] When ρ1<ρ0, the resin is completely eluted and the elution is ended. The eluent pump R1 is stopped, the eluent valve V3 is closed, the uranium concentration online analyzer U is closed, the air inlet valve V1 is opened, the air compressor W is started, and the lean liquid electromagnetic flowmeter F2 is operated.

[0123] (6) When the lean liquid flow rate at the outlet of the ion exchange tower 1 is 0, a stop air intake signal, a stop eluent discharge signal, a start exhaust signal, and a start transition agent entry signal are generated to control the air to stop entering the ion exchange tower 1, control the eluent to stop discharging the ion exchange tower 1, control the air to be discharged from the ion exchange tower 1, and control the transition agent to enter the ion exchange tower 1.

[0124] Specifically, when the lean liquid electromagnetic flowmeter F2 monitors that the lean liquid flow at the outlet of the ion exchange tower 1 is 0, the residual eluent in the ion exchange tower 1 is drained, the air compressor W is stopped, the air inlet valve V1 is closed, the eluent valve V5 is closed, the lean liquid valve V7 is closed, the lean liquid electromagnetic flowmeter F2 is closed, the transition agent valve V8 is opened, the exhaust valve V4 is opened, the transition agent pump R2 is started, and the electric liquid level gauge LT is operated.

[0125] (7) When the liquid level in the ion exchange column 1 reaches the top of the ion exchange column 1, a stop air exhaust signal and a start transition waste liquid discharge signal are generated to control the air to stop exhausting from the ion exchange column 1 and control the transition waste liquid to discharge from the ion exchange column 1.

[0126] When the electric liquid level meter LT monitors that the liquid level reaches the top of the ion exchange column 1, the ion exchange column 1 is filled with the transition agent, the air exhaust valve V4 is closed, the electric liquid level meter LT is closed, the transition waste liquid valve V9 is opened, and the transition agent chloride or nitrate concentration online analyzer C1 and the transition waste liquid chloride or nitrate concentration online analyzer C2 are operated.

[0127] (8) When the concentration of chloride or nitrate in the transition agent entering the ion exchange column 1 is greater than or equal to the concentration of chloride or nitrate in the transition waste liquid discharged from the ion exchange column 1, a stop transition agent entering signal and a stop transition waste liquid discharging signal are generated to control the transition agent to stop entering the ion exchange column 1 and control the transition waste liquid to stop discharging from the ion exchange column 1.

[0128] Specifically, the concentration of chloride or nitrate in the transition agent entering the ion exchange column 1 is ρ3, and the concentration of chloride or nitrate in the transition waste liquid discharged from the ion exchange column 1 is ρ4.

[0129] As shown in Figure 2 When ρ3< ρ4, the resin is not completely transformed.

[0130] When ρ3≥ ρ4, the resin is completely transformed, and the transformation is ended. The transition agent pump R2 is stopped, the transition agent valve V8 is closed, the transition waste liquid valve V9 is closed, the transition agent chloride or nitrate concentration online analyzer C1 is closed, and the transition waste liquid chloride or nitrate concentration online analyzer C2 is closed.

[0131] The present application monitors important parameters such as flow, liquid level, uranium concentration, and chloride (or nitrate) concentration online through monitoring equipment, realizes automatic control according to the monitoring results of key parameters in the elution and transformation processes, improves the timeliness and accuracy of related operations, and reduces the workloads of analysts and on-duty personnel.

[0132] In order to better understand the technical solutions of the present application, three embodiments are provided below to introduce the processes of ion exchange resin elution and transformation automatic control.

[0133] Embodiment 1

[0134] The saturated resin uranium adsorption capacity of a CO2+O2 in-situ leaching mine in a certain place is 60 mg / mL, the eluant is 80 g / L NaCl+20 g / L NaHCO3, the set elution liquid uranium concentration ρ0 for ending elution is 0.5 g / L, the set minimum uranium concentration ρ2 of qualified liquid is 10.0 g / L, and the transition agent chloride concentration ρ3 is 0.3 g / L.

[0135] Open the air inlet valve V1 and the adsorption tail liquid valve V2, start the air compressor W, and run the adsorption tail liquid electromagnetic flowmeter F1. When the flow rate monitored by the adsorption tail liquid electromagnetic flowmeter F1 is 0, stop the air compressor W, close the air inlet valve V1 and the adsorption tail liquid valve V2, and close the adsorption tail liquid electromagnetic flowmeter F1.

[0136] Open eluent valve V3 and exhaust valve V4, start eluent pump R1, and operate the electric level gauge LT. When the liquid level measured by the electric level gauge LT reaches the top of ion exchange tower 1, close exhaust valve V4, turn off the electric level gauge LT, open eluent valve V5, and operate the online uranium concentration analyzer U.

[0137] At the beginning of the elution, the uranium concentration ρ1 of the eluent was 80.2 g / L, and the acceptable solution valve V6 was opened. After 6 BV of elution, the uranium concentration ρ1 of the eluent dropped to 10.0 g / L. The acceptable solution valve V6 was closed, and the lean solution valve V7 was opened. After 14 BV of elution, the uranium concentration ρ1 of the eluent dropped to 0.5 g / L. The eluent pump R1 was stopped, the eluent valve V3 was closed, and the online uranium concentration analyzer U was turned off.

[0138] Open the air inlet valve V1, start the air compressor W, and operate the lean liquid electromagnetic flowmeter F2. When the flow rate monitored by the lean liquid electromagnetic flowmeter F2 is 0, stop the air compressor W, close the air inlet valve V1, the eluent valve V5, the lean liquid valve V7, and close the lean liquid electromagnetic flowmeter F2.

[0139] Open the transition agent valve V8 and exhaust valve V4, start the transition agent pump R2, and operate the electric liquid level gauge LT. When the liquid level measured by the electric liquid level gauge LT reaches the top of ion exchange tower 1, close the exhaust valve V4 and the electric liquid level gauge LT, open the transition agent waste liquid valve V9, and operate the transition agent chloride concentration online analyzer C1 and the transition agent waste liquid chloride concentration online analyzer C2. After 35 BV of transition operation, the transition agent chloride concentration ρ4 is 0.3 g / L. Stop the transition agent pump R2, close the transition agent valve V8 and the transition agent waste liquid valve V9, and close the transition agent chloride concentration online analyzer C1 and the transition agent waste liquid chloride concentration online analyzer C2.

[0140] The entire elution process produced 14 BV of liquid, of which the first 6 BV were qualified with a uranium concentration of 36.1 g / L, and the remaining 8 BV were lean liquid with a uranium concentration of 3.5 g / L. A total of 35 BV were transformed during the entire conversion process, with the chloride concentration of the conversion wastewater reaching 1.6 g / L. The entire process achieved rapid, accurate, and automated control, reducing human workload by 25%.

[0141] Example 2

[0142] The uranium adsorption capacity of the saturated resin in a certain acid in-situ leaching mine is 32 mg / mL, the eluent is 60 g / L NaNO3 + 20 g / L H2SO4, the uranium concentration ρ0 of the eluent at the end of leaching is set to 0.1 g / L, the minimum uranium concentration ρ2 of the qualified liquid is set to 5.0 g / L, and the nitrate concentration ρ3 of the transition agent is 0.2 g / L.

[0143] Open the air inlet valve V1 and the adsorption tail liquid valve V2, start the air compressor W, and run the adsorption tail liquid electromagnetic flowmeter F1. When the flow rate monitored by the adsorption tail liquid electromagnetic flowmeter F1 is 0, stop the air compressor W, close the air inlet valve V1 and the adsorption tail liquid valve V2, and close the adsorption tail liquid electromagnetic flowmeter F1.

[0144] Open eluent valve V3 and exhaust valve V4, start eluent pump R1, and operate the electric level gauge LT. When the liquid level measured by the electric level gauge LT reaches the top of ion exchange tower 1, close exhaust valve V4, turn off the electric level gauge LT, open eluent valve V5, and operate the online uranium concentration analyzer U.

[0145] At the beginning of the elution, the uranium concentration ρ1 of the eluent was 25.2 g / L, and the acceptable solution valve V6 was opened. After 4 BV of elution, the uranium concentration ρ1 of the eluent dropped to 5.0 g / L. The acceptable solution valve V6 was closed, and the lean solution valve V7 was opened. After 10 BV of elution, the uranium concentration ρ1 of the eluent dropped to 0.1 g / L. The eluent pump R1 was stopped, the eluent valve V3 was closed, and the online uranium concentration analyzer U was turned off.

[0146] Open the air inlet valve V1, start the air compressor W, and operate the lean liquid electromagnetic flowmeter F2. When the flow rate monitored by the lean liquid electromagnetic flowmeter F2 is 0, stop the air compressor W, close the air inlet valve V1, the eluent valve V5, the lean liquid valve V7, and close the lean liquid electromagnetic flowmeter F2.

[0147] Open the transition agent valve V8 and exhaust valve V4, start the transition agent pump R2, and operate the electric liquid level gauge LT. When the liquid level measured by the electric liquid level gauge LT reaches the top of ion exchange tower 1, close the exhaust valve V4 and the electric liquid level gauge LT, open the transition agent waste liquid valve V9, and operate the transition agent nitrate concentration online analyzer C1 and the transition waste liquid nitrate concentration online analyzer C2. After 40 BV of transition operation, the nitrate concentration ρ4 in the transition waste liquid is 0.2 g / L. Stop the transition agent pump R2, close the transition agent valve V8 and the transition waste liquid valve V9, and close the transition agent nitrate concentration online analyzer C1 and the transition waste liquid nitrate concentration online analyzer C2.

[0148] The entire elution process produced 10 BV of uranium, of which the first 4 BV were qualified with a uranium concentration of 14.6 g / L, and the remaining 6 BV were lean with a uranium concentration of 2.7 g / L. A total of 40 BV were transformed during the entire conversion process, with the nitrate concentration of the wastewater reaching 2.2 g / L. The entire process achieved rapid, accurate, and automated control, reducing human workload by 30%.

[0149] Example 3

[0150] The uranium adsorption capacity of the saturated resin in a certain acid in-situ leaching mine is 26 mg / mL, the eluent is 60 g / L NaCl + 5 g / L H2SO4, the uranium concentration ρ0 of the eluent at the end of leaching is set to 0.2 g / L, the minimum uranium concentration ρ2 of the qualified liquid is set to 5.0 g / L, and the chloride concentration ρ3 of the transition agent is 0.5 g / L.

[0151] Open the air inlet valve V1 and the adsorption tail liquid valve V2, start the air compressor W, and run the adsorption tail liquid electromagnetic flowmeter F1. When the flow rate monitored by the adsorption tail liquid electromagnetic flowmeter F1 is 0, stop the air compressor W, close the air inlet valve V1 and the adsorption tail liquid valve V2, and close the adsorption tail liquid electromagnetic flowmeter F1.

[0152] Open eluent valve V3 and exhaust valve V4, start eluent pump R1, and operate the electric level gauge LT. When the liquid level measured by the electric level gauge LT reaches the top of ion exchange tower 1, close exhaust valve V4, turn off the electric level gauge LT, open eluent valve V5, and operate the online uranium concentration analyzer U.

[0153] At the beginning of the elution, the uranium concentration ρ1 of the eluent was 21.8 g / L, and the acceptable solution valve V6 was opened. After 5 BV of elution, the uranium concentration ρ1 of the eluent dropped to 5.0 g / L. The acceptable solution valve V6 was closed, and the lean solution valve V7 was opened. After 11 BV of elution, the uranium concentration ρ1 of the eluent dropped to 0.2 g / L. The eluent pump R1 was stopped, the eluent valve V3 was closed, and the online uranium concentration analyzer U was turned off.

[0154] Open the air inlet valve V1, start the air compressor W, and operate the lean liquid electromagnetic flowmeter F2. When the flow rate monitored by the lean liquid electromagnetic flowmeter F2 is 0, stop the air compressor W, close the air inlet valve V1, the eluent valve V5, the lean liquid valve V7, and close the lean liquid electromagnetic flowmeter F2.

[0155] Open the transition agent valve V8 and exhaust valve V4, start the transition agent pump R2, and operate the electric liquid level gauge LT. When the liquid level measured by the electric liquid level gauge LT reaches the top of ion exchange tower 1, close the exhaust valve V4 and the electric liquid level gauge LT, open the transition agent waste liquid valve V9, and operate the transition agent chloride concentration online analyzer C1 and the transition agent waste liquid chloride concentration online analyzer C2. After 30 BV of transition operation, the transition agent chloride concentration ρ4 is 0.5 g / L. Stop the transition agent pump R2, close the transition agent valve V8 and the transition agent waste liquid valve V9, and close the transition agent chloride concentration online analyzer C1 and the transition agent waste liquid chloride concentration online analyzer C2.

[0156] The entire elution process produced 11 BV of uranium, of which the first 5 BV were qualified with a uranium concentration of 11.1 g / L, and the remaining 6 BV were lean with a uranium concentration of 2.3 g / L. A total of 30 BV were transformed during the entire conversion process, with the chloride concentration of the conversion wastewater reaching 2.6 g / L. The entire process was rapidly and accurately automated, reducing human workload by 40%.

[0157] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0158] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An automatic control system for eluting and transforming ion exchange resins, used to control the elution and transformation of ion exchange resins by an ion exchange tower, characterized in that: The ion exchange resin elution and transformation automatic control system includes: a monitoring device connected to the ion exchange tower, for detecting the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the conversion agent entering the ion exchange tower, and the concentration of chloride or nitrate in the conversion waste liquid discharged from the ion exchange tower; a controller connected to the monitoring device, configured to generate an air control signal, an adsorption control signal, a leaching control signal, and a transformation control signal based on the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower, and the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower; an air control device, connected to the ion exchange tower and the controller, respectively, for controlling air to enter or exit the ion exchange tower based on the air control signal; an adsorption control device, connected to the ion exchange tower and the controller, respectively, for controlling the adsorption tail liquid to be discharged from the ion exchange tower based on the adsorption control signal; an elution control device, connected to the ion exchange tower and the controller, respectively, for controlling the eluent to enter the ion exchange tower and controlling the eluent to exit the ion exchange tower based on the elution control signal; The transformation control device is connected to the ion exchange tower and the controller respectively, and is used to control the transformation agent to enter the ion exchange tower and control the transformation waste liquid to be discharged from the ion exchange tower based on the transformation control signal.

2. The ion exchange resin elution and transformation automatic control system according to claim 1, characterized in that: The ion exchange tower is provided with an air inlet, an exhaust port, an eluent inlet, an eluent outlet, a transformation agent inlet, a transformation waste liquid outlet and an adsorption tail liquid outlet; The air inlet is connected to an air inlet pipeline; the air outlet is connected to an exhaust pipeline; The eluent inlet is connected to an eluent inlet pipeline; the eluent outlet is connected to an eluent outlet pipeline; the eluent outlet pipeline is also connected to a qualified liquid pipeline and a lean liquid pipeline respectively; The transformation agent liquid inlet is connected to a transformation agent liquid inlet pipeline; the transformation waste liquid outlet is connected to a transformation waste liquid outlet pipeline; The adsorption tail liquid outlet is connected with an adsorption tail liquid pipeline.

3. The ion exchange resin elution and transformation automatic control system according to claim 2, characterized in that: The monitoring equipment includes: an electric liquid level gauge, provided on the exhaust pipeline, for detecting the liquid level in the ion exchange tower; An adsorption tail liquid electromagnetic flowmeter is provided on the adsorption tail liquid pipeline and is used to detect the flow rate of the adsorption tail liquid discharged from the ion exchange tower; A lean liquid electromagnetic flowmeter is provided on the lean liquid pipeline to detect the flow of lean liquid discharged from the ion exchange tower; the liquid flow at the outlet of the ion exchange tower includes the flow of adsorption tail liquid and the flow of lean liquid; an online uranium concentration analyzer, provided on the eluent outlet pipeline, for detecting the uranium concentration of the liquid discharged from the ion exchange tower; An online analyzer for the concentration of chloride or nitrate in the transformation agent is provided on the transformation agent inlet pipeline and is used to detect the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower; The online analyzer for the concentration of chloride or nitrate in the transformation waste liquid is arranged on the transformation waste liquid outlet pipeline and is used to detect the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower.

4. The ion exchange resin elution and transformation automatic control system according to claim 2, characterized in that: The air control equipment includes: an air compressor, an air intake valve and an exhaust valve; The air compressor and the air intake valve are both arranged on the air intake pipeline, and the air intake valve is located between the air compressor and the air intake; the exhaust valve is arranged on the exhaust pipeline; The air control signal is used to control the operating states of the air compressor, the intake valve, and the exhaust valve.

5. The ion exchange resin elution and transformation automatic control system according to claim 2, characterized in that: The adsorption control device includes an adsorption tail liquid valve; the adsorption control signal is used to control the operating state of the adsorption tail liquid valve.

6. The ion exchange resin elution and transformation automatic control system according to claim 2, characterized in that: The elution control equipment includes: an eluent pump, an eluent valve, an eluent valve, a qualified liquid valve and a lean liquid valve; The eluent pump and the eluent valve are both arranged on the eluent inlet pipeline, and the eluent valve is located between the eluent pump and the eluent inlet; The eluent valve is arranged on the eluent outlet pipeline; The qualified liquid valve is arranged on the qualified liquid pipeline; The lean liquid valve is arranged on the lean liquid pipeline; The elution control signal is used to control the operating states of the eluent pump, the eluent valve, the eluent valve, the qualified liquid valve, and the lean liquid valve.

7. The ion exchange resin elution and transformation automatic control system according to claim 2, characterized in that: The transformation control equipment includes: a transformation agent pump, a transformation agent valve and a transformation waste liquid valve; The transformation agent pump and the transformation agent valve are both arranged on the transformation agent liquid inlet pipeline, and the transformation agent valve is located between the transformation agent pump and the transformation agent liquid inlet; The transformation waste liquid valve is arranged on the transformation waste liquid outlet pipeline; The transformation control signal is used to control the operating states of the transformation agent pump, the transformation agent valve, and the transformation waste liquid valve.

8. An automatic control method for eluting and transforming an ion exchange resin, applied to the automatic control system for eluting and transforming an ion exchange resin according to any one of claims 1 to 7, characterized in that: The ion exchange resin elution and transformation automatic control method comprises: The monitoring equipment is used to detect the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the conversion agent entering the ion exchange tower, and the concentration of chloride or nitrate in the conversion waste liquid discharged from the ion exchange tower; generating, by a controller, an air control signal, an adsorption control signal, a leaching control signal, and a transformation control signal according to the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower, and the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower; controlling air to enter or be exhausted from the ion exchange tower based on the air control signal through an air control device; controlling the adsorption tail liquid to be discharged from the ion exchange tower based on the adsorption control signal by an adsorption control device; Based on the elution control signal, the elution control device controls the eluent to enter the ion exchange tower and controls the eluent to be discharged from the ion exchange tower; Based on the transformation control signal, the transformation agent is controlled to enter the ion exchange tower, and the transformation waste liquid is controlled to be discharged from the ion exchange tower.

9. The automatic control method for eluting and transforming ion exchange resin according to claim 8, characterized in that: The liquid flow at the outlet of the ion exchange tower includes the adsorption tail liquid flow and the lean liquid flow; The air control signal includes an intake start signal, an intake stop signal, an exhaust start signal, and an exhaust stop signal; The adsorption control signal includes a start adsorption tail liquid discharge signal and a stop adsorption tail liquid discharge signal; The elution control signal includes an eluent entry start signal, an eluent entry stop signal, an eluent discharge start signal, and an eluent discharge stop signal; The transformation control signal includes a transformation agent entry start signal, a transformation agent entry stop signal, a transformation waste liquid discharge start signal, and a transformation waste liquid discharge stop signal; Generate an air control signal, an adsorption control signal, a leaching control signal, and a transformation control signal according to the liquid level in the ion exchange tower, the liquid flow rate at the outlet of the ion exchange tower, the uranium concentration of the liquid discharged from the ion exchange tower, the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower, and the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower, specifically including: Generate an air intake start signal and a tail liquid adsorption start discharge signal to control air to enter the ion exchange tower and control the tail liquid adsorption to be discharged from the ion exchange tower; When the flow rate of the adsorption tail liquid at the outlet of the ion exchange tower is 0, a stop air intake signal, a stop adsorption tail liquid discharge signal, a start exhaust signal and a start eluent entry signal are generated to control the air to stop entering the ion exchange tower, control the adsorption tail liquid to stop discharging the ion exchange tower, control the air to discharge the ion exchange tower, and control the eluent to enter the ion exchange tower; When the liquid level in the ion exchange tower reaches the top of the ion exchange tower, a stop exhaust signal and a start eluent discharge signal are generated to control the air to stop being discharged from the ion exchange tower and the eluent to be discharged from the ion exchange tower; When the uranium concentration of the liquid discharged from the ion exchange tower is lower than the set uranium concentration for ending elution, a signal for stopping the entry of the eluent and a signal for starting the air intake are generated to control the eluent to stop entering the ion exchange tower and control the air to enter the ion exchange tower; When the lean liquid flow rate at the outlet of the ion exchange tower is 0, a stop air intake signal, a stop eluent discharge signal, a start exhaust signal, and a start transition agent entry signal are generated to control the air to stop entering the ion exchange tower, the eluent to stop discharging the ion exchange tower, the air to discharge the ion exchange tower, and the transition agent to enter the ion exchange tower; When the liquid level in the ion exchange tower reaches the top of the ion exchange tower, a stop exhaust signal and a start transformation waste liquid discharge signal are generated to control the air to stop being discharged from the ion exchange tower and control the transformation waste liquid to be discharged from the ion exchange tower; When the concentration of chloride or nitrate in the transformation agent entering the ion exchange tower is greater than or equal to the concentration of chloride or nitrate in the transformation waste liquid discharged from the ion exchange tower, a signal for stopping the transformation agent from entering the ion exchange tower and a signal for stopping the transformation waste liquid from discharging the ion exchange tower are generated to control the transformation agent to stop entering the ion exchange tower and to control the transformation waste liquid to stop discharging the ion exchange tower.

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