At-211 online column separation device based on imidazolium functional resin and use method of At-211 online column separation device

Abstract

The invention belongs to the technical field of radionuclide separation, and relates to an At-211 online column separation method and device based on imidazolium functional resin. The device comprises a rack and a separation tank; during use, channeling, wall flow and bubble retention in a resin bed are eliminated through stable up-and-down reciprocating motion of the separation tank, liquid flow distribution is more uniform, the mass transfer effect is greatly improved, At-211 separation is more sufficient, the purity is higher, meanwhile, a separation and waste liquid treatment integrated structure is adopted, and the separation efficiency is improved. Radioactive waste liquid generated by separation can be directly conveyed to a treatment tank through a telescopic pipeline, independent transfer is not needed, the radioactive leakage risk is remarkably reduced, full mixing of the waste liquid is achieved in cooperation with a stirring and wall scraping structure, and the waste liquid and impurities are prevented from being attached to and remaining on the inner wall of a tank body; accurate and synchronous mixing reaction of the medicament and the waste liquid is achieved, the harmless treatment effect of the waste liquid is improved, more thorough treatment is ensured, and operation is more stable.

Description

Technical Field

[0001] This invention relates to the field of radionuclide separation technology, and in particular to an At-211 online column separation device based on imidazolium functionalized resin and its usage method. Background Technology

[0002] At-211, as a radionuclide with excellent nuclear properties, has broad application prospects in targeted therapy, nuclear medicine diagnostics, and other fields. Its separation purity directly determines the safety and effectiveness of subsequent applications.

[0003] Currently, online column separation of At-211 mostly employs functionalized resin adsorption separation technology. Among them, imidazolium functionalized resin has become the preferred adsorption material in this field due to its excellent selective adsorption performance for At-211.

[0004] Traditional column separation devices generally employ a static fixed-bed structure, where the separation tank remains completely stationary during operation. Liquid flows down the resin bed solely by gravity, easily forming channeling and wall flow phenomena within the fixed bed. Some liquid rapidly passes through the resin bed along channels with lower resistance, failing to make sufficient contact with most of the resin. Simultaneously, air bubbles generated within the resin bed are difficult to expel on their own, occupying bed voids and hindering uniform liquid flow distribution. Ultimately, this results in uneven liquid flow distribution and poor mass transfer, leading to insufficient adsorption and elution of At-211 by the imidazolium-functionalized resin. This directly reduces separation efficiency and product purity. Furthermore, the radioactive waste generated during the separation process lacks an integrated treatment design, requiring separate transportation and subsequent centralized treatment. This not only complicates the operation process but also increases the risk of radioactive leakage and environmental pollution. Summary of the Invention

[0005] The At-211 online column separation device based on imidazolium functionalized resin provided by this invention achieves smooth up-and-down reciprocating motion by driving the separation tank, eliminating channeling, wall flow and bubble retention in the resin bed, making the liquid flow distribution more uniform and significantly improving the mass transfer effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an At-211 online column separation device based on imidazolium functionalized resin, the device comprising: a frame and a separation tank; A processing tank is fixedly installed at the bottom of the frame. The inner wall of the processing tank is provided with a stirring mechanism, which is connected to a pneumatic drive mechanism. The stirring mechanism includes an electric push rod, a rack, a gear, and a drive shaft. The electric push rod is fixedly installed on one side of the inner wall of the frame. The output end of the electric push rod is fixedly connected to one side of the rack. The rack meshes with the gear for transmission. The gear is fixedly sleeved on the outer surface of the drive shaft. The drive shaft rotates through the bottom of the processing tank and extends into its interior. A hollow cylinder and a reagent tank are fixedly installed on one side of the frame. The hollow cylinder is located between the separation tank and the processing tank. The pneumatic drive mechanism is connected to the hollow cylinder. A buffer reset mechanism is installed inside the hollow cylinder. The buffer reset mechanism is fixedly connected to the bottom of the separation tank and is used to drive the separation tank to move up and down reciprocally. The hollow cylinder is connected to the reagent tank to form a reagent dosing mechanism, which is used to transport the reagent into the treatment tank.

[0007] As a further improvement of the present invention: the drive shaft is connected to the processing tank through a bearing, and a plurality of evenly distributed stirring plates are fixedly arranged on the outer surface of the drive shaft. Each stirring plate is fixedly connected to a scraper on the side away from the drive shaft, and the plurality of scrapers are in contact with the inner wall of the processing tank.

[0008] As a further improvement of the present invention: the pneumatic drive mechanism includes a cylinder, a piston plate, a distributor, a first conduit and a second conduit. The cylinder is fixedly disposed on one side of the inner wall of the frame and away from the electric push rod. The piston plate is slidably embedded in the inner wall of the cylinder, and one end of the piston plate is fixedly connected to the side of the rack away from the electric push rod.

[0009] As a further improvement of the present invention: the end of the cylinder away from the piston plate is connected to the distributor, the output end of the distributor is connected to two first conduits, and the end of each first conduit away from the distributor is connected to multiple second conduits, and the end of the second conduit away from the first conduit is connected to the interior of the hollow cylinder.

[0010] As a further improvement of the present invention: the buffer reset mechanism includes a pressure plate, a support rod, a bottom plate and a spring. The pressure plate is slidably embedded in the inner wall of the hollow cylinder. The top of the pressure plate is fixedly connected to the support rod. The top end of the support rod passes through the top of the hollow cylinder and is fixedly connected to the bottom of the separation tank. The bottom plate is fixedly set in the inner wall of the hollow cylinder. The two ends of the spring are fixedly connected to the bottom of the pressure plate and the bottom inner wall of the hollow cylinder, respectively.

[0011] As a further improvement of the present invention: multiple hollow cylinders are provided, and the multiple hollow cylinders are evenly distributed at the bottom of the separation tank with the central axis of the separation tank as the center. Each hollow cylinder is provided with a set of buffer reset mechanisms, and the support rod of each buffer reset mechanism is fixedly connected to the bottom of the separation tank to ensure the stability of the separation tank during its up-and-down reciprocating motion.

[0012] As a further improvement of the present invention: the reagent dosing mechanism includes a drain pipe, an inlet pipe, and a one-way valve. The reagent tank is fixedly mounted on one side of the frame. The reagent tank is connected to the interior of the hollow cylinder through the drain pipe. The upper part of the side wall of the hollow cylinder is connected to the interior of the processing tank through the inlet pipe. One-way valves are fixedly installed on both the drain pipe and the inlet pipe, and the two one-way valves have opposite conduction directions. As a further improvement to the present invention: the separation tank is filled with imidazolium functionalized resin for online column separation of At-. The separation tank is connected to the processing tank via a telescopic pipe. The telescopic pipe is made of corrosion-resistant, flexible, and telescopic PTFE corrugated pipe, and its telescopic stroke is adapted to the up-and-down reciprocating stroke of the separation tank. The top of the reagent tank is provided with an openable top cover for replenishing the reagent. As a further improvement of the present invention: the outer surface of the treatment tank is connected to a liquid outlet pipe, and a pump is installed at one end of the liquid outlet pipe for discharging the treated waste liquid.

[0013] The method of using the At-211 online column separation device based on imidazolium functionalized resin, applied to the aforementioned At-211 online column separation device based on imidazolium functionalized resin, includes the following steps: S1. Fill the separation tank with imidazolium functionalized resin, inject the treatment agent into the reagent tank and close the top cover; S2. Start the At-211 online column separation operation. The waste liquid generated in the separation tank is transported to the processing tank by gravity through the retractable waste liquid pipe. The retractable waste liquid pipe adapts to the movement of the subsequent separation tank. S3. Start the electric push rod. The output end of the electric push rod drives the rack to reciprocate linearly. The rack meshes with the drive gear to reciprocate and rotate, which in turn drives the transmission shaft, stirring plate and scraper to reciprocate and stir the waste liquid in the treatment tank. At the same time, the scraper scrapes off the residue on the inner wall of the treatment tank. S4. When the rack and pinion reciprocates, it drives the piston plate to slide back and forth inside the cylinder, squeezing and pushing the gas inside the cylinder. The gas is evenly sent into each hollow cylinder through the distributor, the first conduit, and the second conduit, pushing the pressure plate and support rod to rise, which in turn drives the separation tank to rise. When the air pressure inside the hollow cylinder drops, the pressure plate falls back under the gravity of the separation tank and the buffering effect of the spring, driving the separation tank to fall smoothly back down, forming an up-and-down reciprocating motion. At the same time, when the pressure plate slides back and forth, negative pressure and positive pressure are formed in the upper cavity of the pressure plate inside the hollow cylinder. When there is negative pressure, the agent is drawn into the agent tank through the drain pipe, and when there is positive pressure, the agent is discharged into the treatment tank through the inlet pipe. S5. After the waste liquid in the treatment tank is treated, start the pump and extract and discharge the treated waste liquid through the outlet pipe. Then, turn off the electric push rod and the pump to complete the entire At-separation and waste liquid treatment process.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: This invention eliminates channeling, wall flow, and bubble retention in the resin bed through the smooth up-and-down reciprocating motion of the separation tank, resulting in a more uniform liquid flow distribution and significantly improved mass transfer. This allows for more thorough separation of At-211 with higher purity. Simultaneously, the integrated structure of separation and waste liquid treatment allows the radioactive waste liquid generated during separation to be directly transported to the treatment tank via a telescopic pipe, eliminating the need for separate transfer and significantly reducing the risk of radioactive leakage. The stirring and wall-scraping structures ensure thorough mixing of the waste liquid, preventing residues of waste liquid and impurities from adhering to the inner wall of the tank. Combined with a synchronously linked reagent dosing mechanism, precise and synchronized mixing and reaction of the reagent and waste liquid are achieved, improving the harmless treatment effect of the waste liquid and ensuring more thorough treatment and more stable operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the At-211 online column separation device based on imidazolium functionalized resin and its usage method proposed in this invention.

[0016] Figure 2 This is a side-view three-dimensional structural diagram of the At-211 online column separation device based on imidazolium functionalized resin and its usage method proposed in this invention.

[0017] Figure 3 This is a cross-sectional view of the frame of the At-211 online column separation device and its usage method based on imidazolium functionalized resin proposed in this invention.

[0018] Figure 4 This is a schematic diagram of the internal structure of the cylinder in the At-211 online column separation device and its usage method based on imidazolium functionalized resin proposed in this invention.

[0019] Figure 5 This invention presents a cross-sectional three-dimensional structural diagram of the processing tank in the At-211 online column separation device and its usage method based on imidazolyl functionalized resin.

[0020] Figure 6 This invention presents a schematic diagram of the internal three-dimensional structure of the hollow cylinder in the At-211 online column separation device and its usage method based on imidazolium functionalized resin.

[0021] Figure 7 This invention presents a three-dimensional structural diagram of the cylinder in the At-211 online column separation device and its usage method based on imidazolium functionalized resin.

[0022] Figure 8 This invention proposes an At-211 online column separation device based on imidazolium functionalized resin and its usage method. Figure 4 Enlarged view of point A in the middle.

[0023] Legend: 1. Frame; 101. Separation tank; 102. Telescopic pipe; 2. Processing tank; 201. Drive shaft; 202. Stirring plate; 203. Scraper; 204. Electric push rod; 205. Rack; 206. Gear; 207. Discharge pipe; 208. Pump; 3. Hollow cylinder; 301. Pressure plate; 302. Support rod; 303. Base plate; 304. Spring; 305. Cylinder; 306. Piston plate; 307. Diverter; 308. First conduit; 309. Second conduit; 4. Chemical tank; 401. Inlet pipe; 402. Drain pipe; 403. One-way valve; 404. Top cover. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figure 1 - Figure 8 As shown, the present invention provides an At-211 online column separation device based on imidazolium functionalized resin. The device includes: a frame 1 and a separation tank 101; a processing tank 2, which is fixedly disposed at the bottom of the frame 1. The inner wall of the processing tank 2 is provided with a stirring mechanism, which is connected to a pneumatic drive mechanism. The stirring mechanism includes an electric push rod 204, a rack 205, a gear 206 and a drive shaft 201. The electric push rod 204 is fixedly installed on one side of the inner wall of the frame 1. The output end of the electric push rod 204 is fixedly connected to one side of the rack 205. The rack 205 meshes with the gear 206 for transmission. The gear 206 is fixedly sleeved on the outer surface of the drive shaft 201. The drive shaft 201 rotates through the bottom of the processing tank 2 and extends into its interior. A hollow cylinder 3 and a reagent tank 4 are fixedly installed on one side of the frame 1. The hollow cylinder 3 is located between the separation tank 101 and the treatment tank 2. The pneumatic drive mechanism is connected to the hollow cylinder 3. A buffer reset mechanism is installed inside the hollow cylinder 3. The buffer reset mechanism is fixedly connected to the bottom of the separation tank 101 and is used to drive the separation tank 101 to move up and down reciprocally. The hollow cylinder 3 and the reagent tank 4 are connected to form a reagent dosing mechanism, which is used to transport the reagent into the treatment tank 2. The separation tank 101 is made of corrosion-resistant and radiation-resistant transparent quartz material. Its interior is a hollow columnar structure. The top is equipped with an openable sealing cover, which is convenient for filling imidazolyl functionalized resin and subsequent maintenance. The bottom is tapered, which is convenient for waste liquid to collect into the telescopic pipe 102 and reduce waste liquid residue.

[0026] Please see Figure 1 - Figure 8In one embodiment, the drive shaft 201 is connected to the treatment tank 2 via a bearing. The bearing is a corrosion-resistant deep groove ball bearing, embedded in a bearing housing at the bottom of the treatment tank 2. Sealing gaskets are provided between the bearing, the drive shaft 201, and the bearing housing to achieve rotational sealing and prevent leakage of waste liquid from the treatment tank 2. Three to four evenly distributed stirring plates 202 are fixedly mounted on the outer surface of the drive shaft 201. The stirring plates 202 are welded to the drive shaft 201 at a 45-degree angle to facilitate thorough stirring of the waste liquid during reciprocating rotation, improving... To improve mixing efficiency, each stirring plate 202 is fixedly connected to a scraper 203 on the side away from the drive shaft 201. The scraper 203 is made of corrosion-resistant elastic PTFE material. Multiple scrapers 203 are tightly fitted to the inner wall of the treatment tank 2 with a gap of no more than 0.5mm. This ensures that when the stirring plate 202 rotates back and forth, the waste liquid and impurities attached to the inner wall of the treatment tank 2 can be thoroughly scraped off, avoiding residual scaling that may affect the subsequent treatment effect. The treatment tank 2 has a cylindrical hollow structure with a feed inlet at the top, which is sealed to the telescopic pipe 102.

[0027] Please see Figure 1 - Figure 8 In one embodiment, the pneumatic drive mechanism includes a cylinder 305, a piston plate 306, a distributor 307, a first conduit 308, and a second conduit 309. The cylinder 305 is fixedly disposed on one side of the inner wall of the frame 1, away from the electric push rod 204. The piston plate 306 is made of a composite material of corrosion-resistant rubber and stainless steel and is slidably embedded in the inner wall of the cylinder 305. A sealing ring is sleeved on the outer surface of the piston plate 306 to achieve sliding sealing and prevent gas leakage. One end of the piston plate 306 is fixedly connected to the side of the rack 205 away from the electric push rod 204 by bolts. When the rack 205 reciprocates, it can synchronously drive the piston plate 306 to slide.

[0028] Furthermore, the end of cylinder 305 furthest from piston plate 306 is connected to distributor 307 via flange, with a sealing gasket at the connection to prevent gas leakage. Distributor 307 is made of 316L stainless steel and has an internal annular distribution chamber, which can evenly distribute the gas delivered from cylinder 305 to two first conduits 308. Both first conduits 308 and second conduits 309 are made of corrosion-resistant PTFE hoses, which have good flexibility and radiation resistance. The diameter of the first conduit 308 is larger than that of the second conduit 309. The end of each first conduit 308 furthest from distributor 307 is connected to two second conduits 309. The number of second conduits 309 corresponds one-to-one with the number of hollow cylinders 3. The end of the second conduit 309 furthest from the first conduit 308 is connected to the bottom of the hollow cylinder 3 via a threaded joint, ensuring that the gas can be stably delivered to the interior of each hollow cylinder 3.

[0029] Please see Figure 1 - Figure 8In one embodiment, the buffer reset mechanism includes a pressure plate 301, a support rod 302, a base plate 303, and a spring 304. The pressure plate 301 has a circular flat plate structure and is slidably embedded in the inner wall of the hollow cylinder 3. An O-ring is fitted on the outer surface of the pressure plate 301 to achieve sliding sealing and prevent leakage of gas and reagents inside the hollow cylinder 3. The top of the pressure plate 301 is welded to the support rod 302. The top of the support rod 302 penetrates through the top of the hollow cylinder 3 and is fixedly connected to the bottom of the separator 101 through a flange, which can stably drive the separator 101 to move up and down. The base plate 303 is made of stainless steel and has a circular flat plate structure to limit the position of the pressure plate 301. The spring 304 is a corrosion-resistant compression spring, and its two ends are fixed to the bottom of the pressure plate 301 and the inner wall of the bottom of the hollow cylinder 3, respectively. The stiffness of the spring 304 is adapted to the weight of the separator 101 and can provide sufficient buffering effect when the pressure plate 301 falls back, reduce the impact load, and prevent the separator 101 from being damaged by the impact of the imidazolyl functionalized resin inside.

[0030] Please see Figure 1 - Figure 8 In one embodiment, four hollow cylinders 3 are provided, and the four hollow cylinders 3 are evenly distributed at 90° around the central axis of the separation tank 101 at the bottom of the separation tank 101 to ensure that the separation tank 101 is subjected to uniform force. Each hollow cylinder 3 is provided with a set of buffer reset mechanisms, and the support rod 302 of each buffer reset mechanism is fixedly connected to the flange at the bottom of the separation tank 101. The specifications of each set of buffer reset mechanisms are completely consistent, ensuring that under gas drive, the four pressure plates 301 rise and fall synchronously, driving the separation tank 101 to move smoothly up and down and back and forth, avoiding tilting and jamming, further ensuring the stability of the imidazolium functionalized resin bed inside the separation tank 101, and optimizing the separation effect of At-211.

[0031] Please see Figure 1 - Figure 8 In one embodiment, the agent dosing mechanism includes a drain pipe 402, an inlet pipe 401, and a one-way valve 403. The agent tank 4 is fixedly mounted on one side of the frame 1 and bolted to the frame 1 via a bracket for easy assembly and disassembly. The agent tank 4 is connected to the drain pipe 402. The interface on the upper side wall of the hollow cylinder 3 is connected to the inlet pipe 401 via a threaded connector. The other end of the inlet pipe 401 is connected to the upper side wall of the treatment tank 2, ensuring that the agent can be smoothly delivered to the treatment tank. Inside the 2nd section, one-way valves 403 are fixedly installed on both the drain pipe 402 and the inlet pipe 401. The one-way valves 403 are corrosion-resistant ball valves. The one-way valve 403 on the drain pipe 402 is directed from the reagent tank 4 to the hollow cylinder 3, and the one-way valve 403 on the inlet pipe 401 is directed from the hollow cylinder 3 to the treatment tank 2. The two one-way valves 403 are directed in opposite directions, which effectively prevents reagent backflow and ensures the quantitative and stable addition of reagents.

[0032] Furthermore, the interior of the separator 101 is filled with imidazolium functionalized resin, with the resin filling height reaching two-thirds of the internal height of the separator 101. This is used to achieve online column separation of At-211, improving separation efficiency and purity. An interface is provided at the bottom conical constriction of the separator 101, which is sealed to the telescopic pipe 102 via a flange. The telescopic pipe 102 is made of corrosion-resistant, flexible, and telescopic PTFE corrugated pipe, and its telescopic stroke is adapted to the up-and-down reciprocating motion of the separator 101. This ensures that the telescopic pipe 102 can synchronously and adaptively expand and contract when the separator 101 moves up and down, without pulling or leakage. The top of the reagent tank 4... The system is equipped with an openable top cover 404, with a sealing gasket between the top cover 404 and the reagent tank 4 to achieve a seal. The top cover 404 has a handle for easy opening and replenishment of reagents. After replenishment, the top cover 404 can be tightened to prevent reagent evaporation and contamination. During the up-and-down reciprocating process, the resin as a whole undulates slightly, causing the internal voids of the resin to periodically expand and compress. The small bubbles that were originally trapped are gradually squeezed out and discharged upwards under the low-density buoyancy, thereby eliminating bubble blockage. It is worth noting that the up-and-down movement of the separator 101 is small and the speed is low. It only improves mass transfer without damaging the resin, breaking the liquid flow, or introducing air. Therefore, no new bubbles are generated.

[0033] Furthermore, a discharge port is provided at the bottom of the outer surface of the treatment tank 2, which is connected to the liquid outlet pipe 207 through a threaded joint. The liquid outlet pipe 207 is made of corrosion-resistant PTFE pipe, and a pump 208 is installed at one end. The pump 208 is a small corrosion-resistant peristaltic pump, which is fixedly installed at the bottom of the frame 1 and bolted to the frame 1 through a bracket. The output end of the pump 208 is provided with a discharge pipe, which is used to extract the treated waste liquid and discharge it to a designated collection container.

[0034] The working principle and usage process of this invention: During use, the waste liquid generated in the separation tank 101 when completing the At-211 separation operation based on imidazolium functionalized resin is transported to the treatment tank 2 by gravity through the telescopic pipe 102. At this time, the electric push rod 204 is activated. The output end of the electric push rod 204 performs reciprocating linear motion, driving the rack 205 fixedly connected to it to move back and forth synchronously. The rack 205 meshes with the gear 206, driving the gear 206 to perform reciprocating rotational motion. The gear 206 drives the transmission shaft 201 to rotate back and forth synchronously. Multiple stirring plates 202 fixedly installed on the transmission shaft 201 rotate back and forth with it in the treatment tank 2, stirring and mixing the waste liquid. The scraper 203 on the stirring plate 202 scrapes the inner wall of the treatment tank 2 simultaneously to prevent waste liquid and impurities from adhering and remaining, ensuring that the waste liquid is treated thoroughly and evenly. While the rack 205 moves back and forth, it drives the piston plate 306 fixedly connected to one side to slide back and forth on the inner wall of the cylinder 305. The piston plate 306 reciprocates and pushes the gas inside the cylinder 305. Gas inside cylinder 305 is transported to distributor 307. After being evenly distributed by distributor 307, it is sequentially transported through first conduit 308 and second conduit 309 to the interiors of multiple hollow cylinders 3. Upon entering the hollow cylinders 3, the gas pushes pressure plate 301 to slide upwards along the inner wall of the hollow cylinder 3. Pressure plate 301, via support rod 302, pushes separator 101 upwards. When the gas pressure inside the hollow cylinder 3 decreases, pressure plate 301 falls back downwards under the weight of separator 101. Base plate 303 is fixedly installed on the inner wall of the hollow cylinder 3. Spring 304 connects pressure plate 301 and the inner wall of the hollow cylinder 3. The downward movement of the pressure plate 301 provides instantaneous buffering, reducing the impact load and thus enabling the separator 101 to move smoothly up and down. During the up and down reciprocating motion of the separator 101, the resin bed moves slowly up and down with the separator 101. The direction of liquid flow and the relative movement of resin particles are constantly slightly disturbed and redistributed, preventing the liquid from fixedly following short-circuit channels and forcing the liquid flow to pass evenly through the entire resin bed. This fundamentally suppresses channeling and wall flow, eliminates channeling, wall flow and bubble retention in the resin bed, makes the liquid flow distribution more uniform, greatly improves the mass transfer effect, and makes At-211 separation more complete and with higher purity. As the pressure plate 301 slides up and down inside the hollow cylinder 3, it creates a reciprocating suction action on the upper cavity of the pressure plate 301. When the pressure plate 301 slides down, the cavity volume increases, generating negative pressure. The agent in the agent tank 4 is drawn into the hollow cylinder 3 through the drain pipe 402. The one-way valve 403 ensures one-way delivery of the agent and prevents backflow. When the pressure plate 301 slides up, the cavity volume decreases, generating positive pressure. The agent in the hollow cylinder 3 is transported to the treatment tank 2 through the inlet pipe 401, realizing the synchronous mixing reaction of the agent and the waste liquid. After the waste liquid has completed the agent mixing treatment in the treatment tank 2, the pump 208 is started, and the treated waste liquid in the treatment tank 2 is extracted through the outlet pipe 207 and discharged through the output end of the pump 208, completing the entire separation and waste liquid treatment process.

[0035] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An At-211 online column separation device based on imidazolium functionalized resin, characterized in that, The device includes: a frame (1) and a separation tank (101); The processing tank (2) is fixedly installed at the bottom of the frame (1). The inner wall of the processing tank (2) is provided with a stirring mechanism, and the stirring mechanism is connected to a pneumatic drive mechanism. The stirring mechanism includes an electric push rod (204), a rack (205), a gear (206), and a drive shaft (201). The electric push rod (204) is fixedly installed on one side of the inner wall of the frame (1). The output end of the electric push rod (204) is fixedly connected to one side of the rack (205). The rack (205) meshes with the gear (206) for transmission. The gear (206) is fixedly sleeved on the outer surface of the drive shaft (201). The drive shaft (201) rotates through the bottom of the processing tank (2) and extends into its interior. A hollow cylinder (3) and a reagent tank (4) are fixedly installed on one side of the frame (1). The hollow cylinder (3) is located between the separation tank (101) and the processing tank (2). The pneumatic drive mechanism is connected to the hollow cylinder (3). A buffer reset mechanism is installed inside the hollow cylinder (3). The buffer reset mechanism is fixedly connected to the bottom of the separation tank (101) and is used to drive the separation tank (101) to move up and down reciprocally. The hollow cylinder (3) is connected to the medicine tank (4) to form a medicine dosing mechanism, which is used to transport the medicine to the inside of the treatment tank (2).

2. The At-211 online column separation device based on imidazolium functionalized resin according to claim 1, characterized in that: The drive shaft (201) is connected to the processing tank (2) via bearings. Multiple evenly distributed stirring plates (202) are fixedly arranged on the outer surface of the drive shaft (201). Each stirring plate (202) is fixedly connected to a scraper (203) on the side away from the drive shaft (201). Multiple scrapers (203) are in contact with the inner wall of the processing tank (2).

3. The At-211 online column separation device based on imidazolium functionalized resin according to claim 1, characterized in that: The pneumatic drive mechanism includes a cylinder (305), a piston plate (306), a distributor (307), a first conduit (308), and a second conduit (309). The cylinder (305) is fixedly disposed on one side of the inner wall of the frame (1) and away from the electric push rod (204). The piston plate (306) is slidably embedded in the inner wall of the cylinder (305). One end of the piston plate (306) is fixedly connected to the side of the rack (205) away from the electric push rod (204).

4. The At-211 online column separation device based on imidazolium functionalized resin according to claim 3, characterized in that: The end of the cylinder (305) away from the piston plate (306) is connected to the distributor (307). The output end of the distributor (307) is connected to two first conduits (308). Each first conduit (308) is connected to multiple second conduits (309) at the end away from the distributor (307). The end of the second conduit (309) away from the first conduit (308) is connected to the interior of the hollow cylinder (3).

5. The At-211 online column separation device based on imidazolium functionalized resin according to claim 4, characterized in that: The buffer reset mechanism includes a pressure plate (301), a support rod (302), a bottom plate (303), and a spring (304). The pressure plate (301) is slidably embedded in the inner wall of the hollow cylinder (3). The top of the pressure plate (301) is fixedly connected to the support rod (302). The top end of the support rod (302) passes through the top of the hollow cylinder (3) and is fixedly connected to the bottom of the separator (101). The bottom plate (303) is fixedly set on the inner wall of the hollow cylinder (3). The two ends of the spring (304) are fixedly connected to the bottom of the pressure plate (301) and the bottom inner wall of the hollow cylinder (3), respectively.

6. The At-211 online column separation device based on imidazolium functionalized resin according to claim 5, characterized in that: Multiple hollow cylinders (3) are provided, and the multiple hollow cylinders (3) are evenly distributed at the bottom of the separation tank (101) with the central axis of the separation tank (101) as the center. Each hollow cylinder (3) is provided with a set of buffer reset mechanisms, and the support rod (302) of each buffer reset mechanism is fixedly connected to the bottom of the separation tank (101) to ensure the stability of the separation tank (101) when it moves up and down.

7. The At-211 online column separation device based on imidazolium functionalized resin according to claim 1, characterized in that: The agent dosing mechanism includes a drain pipe (402), an inlet pipe (401), and a one-way valve (403). The agent tank (4) is fixedly installed on one side of the frame (1). The agent tank (4) is connected to the interior of the hollow cylinder (3) through the drain pipe (402). The upper part of the side wall of the hollow cylinder (3) is connected to the interior of the treatment tank (2) through the inlet pipe (401). One-way valves (403) are fixedly installed on both the drain pipe (402) and the inlet pipe (401), and the two one-way valves (403) have opposite conduction directions.

8. The At-211 online column separation device based on imidazolium functionalized resin according to claim 7, characterized in that: The separation tank (101) is filled with imidazolium functionalized resin for online column separation of At-211. The separation tank (101) is connected to the processing tank (2) through a telescopic pipe (102). The telescopic pipe (102) is made of corrosion-resistant, flexible and telescopic PTFE corrugated pipe, and its telescopic stroke is adapted to the stroke of the reciprocating motion of the separation tank (101). The top of the reagent tank (4) is provided with an openable top cover (404) for replenishing the reagent.

9. The At-211 online column separation device based on imidazolium functionalized resin according to claim 1, characterized in that: The outer surface of the treatment tank (2) is connected to a liquid outlet pipe (207), and a pump (208) is installed at one end of the liquid outlet pipe (207) for discharging the treated waste liquid.

10. A method for using the At-211 online column separation device based on imidazolium functionalized resin, characterized in that: The At-211 online column separation device based on imidazolium functionalized resin according to any one of claims 1-9 comprises the following steps: S1. Fill the separation tank (101) with imidazolium functionalized resin, inject the treatment agent into the reagent tank (4) and close the top cover (404). S2. Start the online column separation operation of At-211. The waste liquid generated in the separation tank (101) is transported to the inside of the treatment tank (2) by gravity through the retractable waste liquid pipe (102). The retractable waste liquid pipe (102) adapts to the movement of the subsequent separation tank (101). S3. Start the electric push rod (204). The output end of the electric push rod (204) drives the rack (205) to reciprocate linearly. The rack (205) meshes with the drive gear (206) to reciprocate and rotate, thereby driving the transmission shaft (201), the stirring plate (202) and the scraper (203) to reciprocate and stir the waste liquid in the treatment tank (2). At the same time, the scraper (203) scrapes off the residue on the inner wall of the treatment tank (2). S4. When the rack (205) reciprocates, it drives the piston plate (306) to slide back and forth inside the cylinder (305), squeezing and pushing the gas inside the cylinder (305). The gas is evenly fed into each hollow cylinder (3) through the distributor (307), the first conduit (308), and the second conduit (309), pushing the pressure plate (301) and the support rod (302) to rise, which in turn drives the separator (101) to rise. When the gas pressure inside the hollow cylinder (3) drops, the pressure... The plate (301) falls back under the weight of the separator (101) and the buffering effect of the spring (304), causing the separator (101) to fall back smoothly, forming an up-and-down reciprocating motion. At the same time, when the pressure plate (301) slides back and forth, the upper cavity of the pressure plate (301) inside the hollow cylinder (3) forms negative pressure and positive pressure. When the pressure is negative, the agent is drawn into the agent tank (4) through the drain pipe (402), and when the pressure is positive, the agent is discharged into the treatment tank (2) through the inlet pipe (401). S5. After the waste liquid in the treatment tank (2) is treated, start the pump (208) and extract and discharge the treated waste liquid through the outlet pipe (207). Then turn off the electric push rod (204) and the pump (208) to complete the entire At-211 separation and waste liquid treatment process.

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