Dissolving and alkali adjusting equipment
By designing automated dissolution and alkali adjustment equipment, the safety hazards in the dissolution process of sealed capsule targets after irradiation were solved, achieving efficient and safe target material processing and reducing irradiation damage to operators.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-03-13
AI Technical Summary
During the dissolution and alkali adjustment process, the irradiated sealed capsule target releases a large amount of heat, posing a safety hazard. Furthermore, the current technology lacks automated processing methods, resulting in a high risk of irradiation injury for operators.
Design a dissolving and alkali-adjusting device, comprising a melting device, a dissolving device, an alkali-adjusting device, and a pumping device, and achieve automated control through a control system to reduce manual operation, including coordinated adjustment of melting, dissolving, and alkali-adjusting parameters.
This improved the target dissolution efficiency, reduced radiation damage to operators, and ensured both safety and processing efficiency.
Smart Images
Figure CN121662472A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of radioisotope preparation technology, and in particular to a dissolution and alkali adjustment device. Background Technology
[0002] 68 Ge is one of the most widely used medical isotopes in clinical practice, and its application prospects both domestically and internationally are very broad. Preparation 68 Ge nuclear reactions are nat Ga(p,xn) 68 Ge is produced by using natural gallium as a target material and then irradiating it with an accelerator. 68 However, due to the low melting point of natural gallium (29.7℃), it cannot be directly used as an irradiation target. Therefore, in the design, niobium (Nb) (which does not react with gallium below 400℃) can be used as the encapsulation material. After filling the interior with natural gallium, it is welded and sealed to obtain an Nb-Ga sealed capsule target. The sealed capsule target is then irradiated using an accelerator to obtain... 68 Ge.
[0003] After the irradiated sealed capsule target is cut and disassembled, the natural gallium inside the sealed capsule target needs to be dissolved and the alkali adjusted. However, the process of dissolution and alkali adjustment releases a large amount of heat, posing a great safety hazard. Therefore, there is an urgent need for a device that can automate the dissolution and alkali adjustment process to reduce irradiation damage to operators. Summary of the Invention
[0004] This application provides a dissolving and alkali-adjusting device that can reduce radiation damage to operators.
[0005] The technical solution of this application embodiment is implemented as follows: This application provides a dissolution and alkali adjustment device for irradiated sealed capsule targets, the dissolution and alkali adjustment device comprising: A melting device for melting the target material inside the sealed capsule target; A dissolving device having a dissolving chamber and an opening communicating with the dissolving chamber, wherein the molten target material can enter the dissolving chamber through the opening and dissolve within the dissolving chamber; An alkali adjustment device is provided, which has an alkali adjustment chamber communicating with the dissolution chamber, wherein the pH of the dissolution solution of the target material is configured to be adjusted to alkalinity in the alkali adjustment chamber; A pumping device is used to pump a solvent into the dissolving chamber, an alkaline agent into the alkali-adjusting chamber, and to pump the solution of the target material into the alkali-adjusting chamber. The control system is communicatively connected to the melting device, the dissolving device, the alkali adjusting device, and the pumping device. The control system is configured to adjust the melting parameters of the melting device, the dissolving parameters of the dissolving device, the alkali adjusting parameters of the alkali adjusting device, and the pumping parameters of the pumping device.
[0006] In one embodiment, the pumping device includes: A delivery pump, communicatively connected to the control system, the delivery pump having multiple pump heads, the control system being used to control the pumping parameters of each pump head; A first pipe and a first reagent bottle, the first reagent bottle being used to contain the solvent, the first pipe connecting the dissolving chamber and the first reagent bottle, and at least one of the plurality of pump heads being a first pump head, the first pump head being disposed in the first pipe; The second pipe and the second reagent bottle are used to contain the alkaline agent. The second pipe connects the alkali adjustment chamber and the second reagent bottle. At least one of the plurality of pump heads is a second pump head, which is disposed in the second pipe. A third pipe connects the alkali adjustment chamber and the dissolution chamber, and at least one of the plurality of pump heads is a third pump head, which is disposed in the third pipe.
[0007] In one embodiment, there are two of each of the second pump head, the second pipeline, and the second reagent bottle. The alkaline agent includes a complexing agent and an alkalinity adjusting agent. The complexing agent and the alkalinity adjusting agent are respectively placed in two second reagent bottles. Each second reagent bottle is connected to the alkalinity adjusting chamber through a second pump head and a second pipeline.
[0008] In one embodiment, there are two of each of the first pump head, the first pipeline, and the first reagent bottle. The solvent includes hydrochloric acid and nitric acid, which are respectively placed in two first reagent bottles. Each first reagent bottle is connected to the dissolving chamber via a first pump head and a first pipeline; and / or, At least one of the plurality of pump heads is a fourth pump head, the pumping device includes a fourth pipe, the fourth pipe is connected to the alkali conditioning chamber, and the fourth pump head is disposed in the fourth pipe for discharging the target material after alkali conditioning; and / or, The pumping device includes a pumping backup controller, which is connected to both the control system and the delivery pump.
[0009] In one embodiment, the melting parameters include heating parameters and lifting / lowering parameters, and the melting device includes: A heating element is used to heat and melt the target material inside the sealed capsule target; the control system is connected via a communication link to adjust the heating parameters of the heating element. A lifting assembly, wherein the heating element is disposed in the lifting assembly, the lifting assembly is configured to move the heating element closer to and away from the opening, and the control system is used to adjust the lifting parameters of the lifting assembly.
[0010] In one embodiment, the heating element has a through-hole positioning groove for engaging with the sealing capsule target; and / or, The melting device includes a temperature sensor for measuring the current temperature of the heating element. The control system is communicatively connected to the temperature sensor and can adjust the heating parameters of the heating element according to the current temperature.
[0011] In one embodiment, the dissolving parameters include stirring parameters and heating parameters, and the dissolving apparatus includes: A dissolving vessel having the dissolving cavity and the opening; A stirring and heating assembly is provided, wherein the dissolving vessel is disposed in the stirring and heating assembly, the stirring and heating assembly is used to heat the dissolving vessel and to stir the dissolving chamber, the stirring and heating assembly is communicatively connected to the control system and is used to adjust the heating parameters and stirring parameters of the stirring and heating assembly.
[0012] In one embodiment, the dissolving vessel has an outlet communicating with the dissolving chamber, the outlet communicating with the alkali adjusting chamber, and the outlet is equipped with a filter; and / or, The dissolving device also includes a cover, which is rotatably disposed in the dissolving vessel and is used to open or close the opening.
[0013] In one embodiment, the alkali adjustment parameters include stirring parameters, and the alkali adjustment device includes: The outer shell has the aforementioned alkali-adjusting chamber; The stirring assembly is communicatively connected to the control system. The stirring assembly is used to stir the alkali adjustment chamber, and the control system is used to adjust the stirring parameters of the stirring assembly.
[0014] In one embodiment, the outer casing includes a first casing and a second casing. The first casing forms the alkali-adjusting chamber. The second casing is fitted around the outer periphery of the first casing to define a space between the second casing and the outer wall of the first casing. The space is used to contain coolant. The second casing has an inlet and an outlet communicating with the space; and / or, The alkali adjustment device includes an acid-base sensor for monitoring the acidity or alkalinity of the liquid in the alkali adjustment chamber. The acid-base sensor is communicatively connected to the control system, which can adjust the pumping parameters of the pumping device according to the acidity or alkalinity of the liquid in the alkali adjustment chamber.
[0015] This application provides a dissolution and alkali adjustment device. By incorporating a melting device, a dissolution device, and an alkali adjustment device, the melting device melts the target material located within a sealed capsule target, which then enters the dissolution chamber through an opening, thus improving the dissolution efficiency of the target material. After dissolution, the alkali adjustment device adjusts the pH of the solution in the alkali adjustment chamber to alkaline, facilitating subsequent separation and purification. A pumping device pumps the dissolving agent into the dissolution chamber, the alkaline agent into the alkali adjustment chamber, and the dissolved target material into the alkali adjustment chamber, reducing operator involvement and the risk of radioactive material leakage, thereby minimizing radiation damage to operators. A control system is established to adjust the melting parameters of the melting device, the dissolution parameters of the dissolution device, the alkali adjustment parameters of the alkali adjustment device, and the pumping parameters of the pumping device. This enables automated control of the melting, dissolution, alkali adjustment, and pumping steps, further reducing operator exposure to radioactive materials and improving processing efficiency through the coordinated adjustment of various relevant parameters. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the dissolving and alkali-adjusting equipment provided in the embodiments of this application; Figure 2 This is a schematic diagram of a melting device provided in another embodiment of the present application, wherein the cut sealing capsule target is inverted in the positioning groove; Figure 3 This is a schematic diagram of the dissolving apparatus provided in another embodiment of this application; Figure 4 This is a schematic diagram of the structure of an alkali adjustment device provided in another embodiment of this application; Figure 5 This is a schematic diagram of the pumping device provided in another embodiment of this application.
[0017] Explanation of reference numerals in the attached figures 100. Dissolving and Alkali Adjusting Equipment; 1. Melting Device; 11. Heating Component; 11a. Positioning Slot; 12. Lifting Assembly; 121. Fixed Base; 122. Lifting Motor; 123. Ball Screw; 2. Dissolving Device; 2a. Dissolving Chamber; 2b. Opening; 2c. Outlet; 21. Dissolving Kettle; 22. Stirring and Heating Assembly; 221. Magnetic Stirrer; 221a. Receiving Tank; 2211. Heating Jacket Switch; 2212. Speed Adjustment Knob; 2213. Temperature Adjustment Knob; 23. Cover; 23a. Exhaust Port; 23b. Hydrochloric Acid Inlet; 23c. Nitric Acid Inlet; 24. Hinge; 3. Alkali Adjusting Device; 3a. Alkali Adjusting Chamber; 3b. Connecting Port; 31. Outer Shell; 31a. Sodium Citrate Inlet; 31b 31c, Vent; 31d, Sodium hydroxide inlet; 31e, Jacket; 31f, Outlet; 311, First shell; 312, Second shell; 32, Stirring assembly; 321, Base; 322, Stirring motor; 323, Stirring paddle; 33, pH sensor; 331, Detection electrode; 332, Cable; 333, Display; 4, Pumping device; 41, Transfer pump; 411, Pump head; 42, First pipeline; 43, First reagent bottle; 44, Second pipeline; 45, Second reagent bottle; 46, Fixing box; 47, Backup controller; 471, Display screen; 472, Direction adjustment button; 473, Speed adjustment knob; 474, Connecting cable; 5, Platform; 200, Sealed capsule target. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0019] In the following description, reference is made to "an embodiment," which describes a subset of all possible embodiments. However, it is understood that "an embodiment" may be the same subset or a different subset of all possible embodiments and may be combined with each other without conflict.
[0020] In the following description, the terms "first" and "second" are used merely to distinguish similar objects and do not represent a specific ordering of objects. It is understood that "first" and "second" may be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.
[0021] This application provides a dissolution and alkali adjustment device 100 for use with a sealed capsule target 200 after irradiation. Please refer to [link to relevant documentation]. Figures 1 to 5The dissolving and alkali-adjusting equipment 100 includes a melting device 1, a dissolving device 2, an alkali-adjusting device 3, a pumping device 4, and a control system. The melting device 1 is used to melt the target material within the sealed capsule target 200. The dissolving device 2 has a dissolving chamber 2a and an opening 2b communicating with the dissolving chamber 2a. The melted target material can enter the dissolving chamber 2a through the opening 2b and dissolve within the dissolving chamber 2a. The alkali-adjusting device 3 has an alkali-adjusting chamber 3a communicating with the dissolving chamber 2a. The pH of the target material's solution is configured to be alkaline within the alkali-adjusting chamber 3a. The pumping device 4 is used to pump a solvent into the dissolving chamber 2a, pump an alkaline agent into the alkali-adjusting chamber 3a, and pump the target material's solution into the alkali-adjusting chamber 3a. The control system is communicatively connected to the melting device 1, the dissolving device 2, the alkali adjusting device 3, and the pumping device 4. The control system is configured to adjust the melting parameters of the melting device 1, the dissolving parameters of the dissolving device 2, the alkali adjusting parameters of the alkali adjusting device 3, and the pumping parameters of the pumping device 4.
[0022] The sealed capsule target 200 can be an Nb-Ga sealed capsule target, and the target material can be... 68 Ge.
[0023] The melting device 1 refers to a device capable of melting the target material located inside the sealed capsule target 200.
[0024] Dissolving device 2 refers to a device capable of dissolving the molten target material.
[0025] Alkali adjustment device 3 refers to a device that can adjust the acidity (pH) of the target material solution.
[0026] Pumping device 4 refers to a device capable of pumping solutions of solvent, alkalinity agent, and target material.
[0027] The dissolving and alkali-adjusting equipment 100 can be placed in a hot chamber for operation.
[0028] The control system can be installed outside the heating room to remotely operate the dissolution and alkali adjustment equipment 100.
[0029] The communication connection can be a wired network, Bluetooth, or WiFi, etc.
[0030] The dissolution and alkali adjustment equipment 100 provided in this application embodiment, by setting up a melting device 1, a dissolution device 2, and an alkali adjustment device 3, can melt the target material located in the sealed capsule target 200, and then enter the dissolution chamber 2a through the opening 2b, thereby improving the dissolution efficiency of the target material. After dissolution, the pH of the solution located in the alkali adjustment chamber 3a is adjusted to alkaline by the alkali adjustment device 3 to facilitate subsequent separation and purification. The pumping device 4 can pump the dissolving agent into the dissolution chamber 2a, pump the alkaline agent into the alkali adjustment chamber 3a, and pump the dissolution solution of the target material into the alkali adjustment chamber 3a, thereby reducing the involvement of operators and the leakage of radioactive materials, and thus reducing the radiation damage to operators. By setting up a control system to adjust the melting parameters of the melting device 1, the dissolving parameters of the dissolving device 2, the alkali adjusting parameters of the alkali adjusting device 3, and the pumping parameters of the pumping device 4, the steps of melting, dissolving, alkali adjusting, and pumping can be automated. This not only further reduces the operator's exposure to radioactive materials, but also improves processing efficiency based on the coordinated adjustment of various related parameters.
[0031] In one embodiment, please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 The pumping device 4 includes a delivery pump 41, a first pipe 42, a first reagent bottle 43, a second pipe 44, a second reagent bottle 45, and a third pipe. The delivery pump 41 is communicatively connected to a control system and has multiple pump heads 411. The control system controls the pumping parameters of each pump head 411. The first reagent bottle 43 contains a solvent. The first pipe 42 connects the dissolving chamber 2a and the first reagent bottle 43. At least one of the multiple pump heads 411 is the first pump head 411, which is located in the first pipe 42. The second reagent bottle 45 contains an alkaline agent. The second pipe 44 connects the alkali-adjusting chamber 3a and the second reagent bottle 45. At least one of the multiple pump heads 411 is the second pump head 411, which is located in the second pipe 44. The third pipe connects the alkali-adjusting chamber 3a and the dissolving chamber 2a. At least one of the multiple pump heads 411 is the third pump head 411, which is located in the third pipe.
[0032] For example, the delivery pump 41 may be a peristaltic pump.
[0033] Pumping parameters can include pumping flow rate, pumping duration, etc.
[0034] In other words, the solvent, alkalinizing agent, and target material solution are all pumped through independent pipelines and pump heads 411, and the pumping flow rate can be adjusted through the control system. This not only reduces the complexity of flow rate adjustment, but also allows for adjustment of the pumping flow rate based on demand, thereby improving the processing efficiency of the dissolving and alkali-adjusting equipment 100.
[0035] In one embodiment, for example, each pump head 411 of the delivery pump 41 can be individually adjusted in speed to control the flow rate, and the rotation direction of the impeller in the pump head 411 can be adjusted to pump the liquid in the corresponding pipe and chamber back to the reagent bottle.
[0036] As an example, in one embodiment, please refer to Figure 5 The pumping device 4 also includes a fixing box 46, in which the first reagent bottle 43 and the second reagent bottle 45 can be placed. This not only protects the first reagent bottle 43 and the second reagent bottle 45 to a certain extent, but also reduces the chance of the first reagent bottle 43 and the second reagent bottle 45 tipping over.
[0037] For example, in one embodiment, the first pump head 411 can be made of a material resistant to concentrated acids, and the first pipe 42 can be made of perfluoroelastomer rubber. The flow rate of the first pump can be adjusted from 0.1 mL / min to 10 mL / min by the control system, with an adjustment accuracy of ±2%.
[0038] In one embodiment, please refer to Figure 4 and Figure 5 There are two of each of the second pump head 411, the second pipe 44, and the second reagent bottle 45. The alkaline agent includes a complexing agent and an alkalinity adjuster. The complexing agent and the alkalinity adjuster are placed in two second reagent bottles 45 respectively. Each second reagent bottle 45 is connected to the alkalinity adjustment chamber 3a through a second pump head 411 and a second pipe 44.
[0039] For example, the complexing agent can be sodium citrate solution, and the alkali adjuster can be sodium hydroxide solution.
[0040] Here, the complexing agent is delivered to the alkali conditioning chamber 3a via one of the second pump heads 411 and one of the second pipes 44. The complexing agent can react with metal ions such as Ga in the alkali conditioning chamber 3a. 3+ Complexation is performed to reduce the formation of insoluble precipitates such as hydroxides during alkali adjustment. After the complexation reaction has continued for a certain period of time, the alkali adjusting agent can be transported to the alkali adjustment chamber 3a through another second pump head 411 and another second pipe 44 to adjust the pH value of the solution in the alkali adjustment chamber 3a, which facilitates subsequent separation and purification and can improve the nuclear purity of the radioactive isotopes prepared in the future.
[0041] In one embodiment, please refer to Figure 1 , Figure 3 and Figure 5 There are two first pump head 411, two first pipes 42 and two first reagent bottles 43. The solvents include hydrochloric acid and nitric acid. The hydrochloric acid and nitric acid are placed in two first reagent bottles 43 respectively. Each first reagent bottle 43 is connected to the dissolving chamber 2a through a first pump head 411 and a first pipe 42.
[0042] Here, hydrochloric acid and nitric acid are pumped to the dissolution chamber 2a through two first pump heads 411, two first pipes 42 and two first reagent bottles 43 to make aqua regia. This can promote the dissolution of the molten target material and improve the dissolution efficiency.
[0043] For example, in one embodiment, the control system can control the first pump head 411 to pump the solution into the dissolution chamber 2a in multiple times, such as three times, according to the preset amount of hydrochloric acid and nitric acid. This can reduce the possibility of violent reaction caused by adding acid all at once, thus improving safety.
[0044] In one embodiment, at least one of the plurality of pump heads 411 is a fourth pump head 411, the pumping device 4 includes a fourth pipe, the fourth pipe is connected to the alkali conditioning chamber 3a, and the fourth pump head 411 is disposed in the fourth pipe for discharging the target material after alkali conditioning.
[0045] For example, the other end of the fourth pipe relative to the alkali adjustment chamber 3a can be connected to a purification device.
[0046] In this way, after the pH of the target solution is adjusted to alkali, the alkali-adjusted target can be discharged through a separate fourth pump head 411 and fourth pipeline, which is conducive to the continuous operation of the dissolution and alkali adjustment equipment 100 and improves the processing efficiency of the sealed capsule target 200.
[0047] In one embodiment, please refer to Figure 5 The pumping device 4 includes a pumping backup controller 47, which is connected to the control system and the delivery pump 41 respectively.
[0048] For example, the backup controller 47 can be located in the hot chamber. The backup controller 47 can be electrically connected to the delivery pump 41 via a connecting cable 474. The backup controller 47 has a display screen 471, a direction adjustment button 472, and a speed adjustment knob 473. By pressing the direction adjustment button 472, the pumping direction of the pump head 411 can be changed, and by rotating the adjustment knob, the pumping flow rate can be increased.
[0049] For example, the backup controller 47 can be operated by a robotic arm.
[0050] Here, by setting up a backup controller 47, operational and safety redundancy can be improved, so that when the control system fails, the backup controller 47 can be operated to ensure that the processing flow continues normally.
[0051] In one embodiment, please refer to Figure 3The dissolving parameters include stirring parameters and heating parameters. The dissolving device 2 includes a dissolving vessel 21 and a stirring and heating assembly 22. The dissolving vessel 21 has a dissolving chamber 2a and an opening 2b. The dissolving vessel 21 is disposed within the stirring and heating assembly 22, which is used to heat the dissolving vessel 21 and stir the dissolving chamber 2a. The stirring and heating assembly 22 is communicatively connected to the control system for adjusting the heating and stirring parameters of the stirring and heating assembly 22.
[0052] For example, the dissolving vessel 21 can be made of polytetrafluoroethylene (PTFE) to resist strong acid corrosion. The volume of the dissolving vessel 21, i.e., the dissolving chamber 2a, can be 500 mL, and the wall thickness of the dissolving vessel 21 can be 10 mm.
[0053] For example, the stirring and heating assembly 22 refers to an assembly that has at least two functions: stirring and heating.
[0054] Heating parameters may include heating temperature, heating time, etc.; stirring parameters may include stirring speed.
[0055] Here, by setting up the stirring and heating component 22, the liquid in the dissolving vessel 21 can be heated and stirred. Furthermore, by communicating with the control system, the stirring and heating parameters of the stirring and heating component 22 can be controlled by the control system, which can promote the rapid dissolution of the target material while also improving safety.
[0056] In one embodiment, please refer to Figure 3 The stirring and heating assembly 22 includes a magnetic stirrer 221, a heating jacket, and a stir bar. The magnetic stirrer 221 has a receiving groove 221a, and the heating jacket is provided on the peripheral sidewall of the receiving groove 221a. The dissolving vessel 21 can be placed in the receiving groove 221a, and the stir bar can be placed in the dissolving vessel 21. The stir bar is driven by the magnetic force generated by the magnetic stirrer 221 to stir. The heating jacket can heat the dissolving vessel 21 by infrared heating. Both the magnetic stirrer 221 and the heating jacket are communicatively connected to the control system.
[0057] For example, the heating temperature range of the heating jacket can be between 25°C and 100°C.
[0058] For example, the stir bar can be a neodymium iron boron magnet wrapped in polytetrafluoroethylene.
[0059] Here, magnetic stirring is used for stirring, and inorganic adjustment can be achieved through the control system. This reduces pollution while improving the uniformity of stirring and ensuring that the solvent and target material react fully.
[0060] As an example, in one embodiment, please refer to Figure 3The magnetic stirrer 221 is also equipped with a heating jacket switch 2211, a speed adjustment knob 2212 and a temperature adjustment knob 2213. The heating jacket switch 2211 is used to control the start and stop of the heating jacket, the speed adjustment knob 2212 is used to adjust the stirring speed of the stirrer, and the temperature adjustment knob 2213 is used to adjust the heating temperature of the heating jacket.
[0061] In one embodiment, please refer to Figure 3 and Figure 4 The dissolving vessel 21 has an outlet 2c that communicates with the dissolving chamber 2a. The outlet 2c is connected to the alkali adjustment chamber 3a. The outlet 2c is equipped with a filter.
[0062] For example, the filter can be a microporous filter.
[0063] For example, the alkali adjustment device 3 may have a connecting port 3b, the dissolving device 2 may have a liquid outlet 2c, and the third pipe connects the connecting port 3b and the liquid outlet 2c.
[0064] This allows for the filtration and removal of residues and undissolved target components from the solution, reducing the introduction of impurities and improving the purification accuracy of subsequent radioactive isotopes.
[0065] In one embodiment, please refer to Figure 3 The dissolving device 2 also includes a cover 23, which is rotatably disposed in the dissolving vessel 21 and is used to open or close the opening 2b.
[0066] For example, the cover 23 can be connected to the dissolving vessel 21 via a hinge 24. The dissolving device 2 may include a drive unit, which is communicatively connected to the control system and connected to the cover 23, for driving the cover 23 to open or close the opening 2b.
[0067] Here, by setting the cover 23, liquid splashing during the reaction of solvent with target material and during stirring can be reduced, thus ensuring good safety.
[0068] As an example, in one embodiment, please refer to Figure 3 The cover 23 also has an exhaust port 23a, a hydrochloric acid inlet 23b and a nitric acid inlet 23c that are connected to the dissolution chamber 2a. The exhaust port 23a is used to discharge the reaction gas. One of the two first pipes 42 is connected to the hydrochloric acid inlet 23b and the other of the two first pipes 42 is connected to the nitric acid inlet 23c.
[0069] In one embodiment, please refer to Figure 1 and Figure 2The melting parameters include heating parameters and lifting parameters. The melting device 1 includes a heating element 11 and a lifting assembly 12. The heating element 11 is used to heat and melt the target material inside the sealed capsule target 200. The control system is connected via communication to adjust the heating parameters of the heating element 11. The heating element 11 is disposed in the lifting assembly 12, which is configured to move the heating element 11 closer to and further away from the opening 2b. The control system is used to adjust the lifting parameters of the lifting assembly 12.
[0070] For example, the lifting assembly 12 may include a fixed base 121, a lifting motor 122 and a ball screw 123. The ball screw 123 and the lifting motor 122 may be mounted on the fixed base 121. One end of the heating element 11 may be mounted on the ball screw 123 and the other end of the heating element 11 may be mounted above the dissolving vessel 21. The lifting motor 122 drives the ball screw 123 to move the heating element 11 closer to and away from the opening 2b.
[0071] For example, the heating element 11 may be a wrapped silicon carbide tube.
[0072] Heating parameters include heating temperature, heating time, and heating power. Lifting parameters may include lifting distance.
[0073] Here, the heating parameters of the heating element 11 are controlled by the control system to ensure that the sealed capsule target 200 is fully heated, thereby ensuring that the target material is liquefied and reducing volatilization damage. By controlling the lifting parameters of the lifting component 12, the molten target material can be accurately dropped into the melting chamber 2a, and the splashing caused by excessive drop can be reduced. After the target material is heated, the lifting component 12 can be driven away from the opening 2b to avoid the relevant structures.
[0074] In one embodiment, please refer to Figure 2 The heating element 11 has a through positioning groove 11a, which is used to engage with the sealing capsule target 200.
[0075] For example, the mounting groove includes a two-section stepped groove. The diameter of the upper groove is larger than that of the lower groove, and the diameter of the upper groove matches the size of the rice flour capsule target. The diameter of the lower groove is smaller than the size of the sealing capsule target 200 and is adapted to the cutout of the sealing capsule target 200. During installation, the side of the sealing capsule target 200 with the cutout is inverted and placed inside the mounting groove.
[0076] Here, by setting the mounting groove, it can be ensured that the sealed capsule target 200 is stably fixed when inverted, reducing the possibility of liquid target leakage caused by displacement during melting.
[0077] In one embodiment, the melting device 1 includes a temperature sensor for measuring the current temperature of the heating element 11. The control system is communicatively connected to the temperature sensor and can adjust the heating parameters of the heating element 11 according to the current temperature.
[0078] For example, the temperature sensor can be a type K thermocouple. The temperature sensor can be embedded inside the heating element 11 to obtain the heating temperature in real time.
[0079] Here, by setting a temperature sensor, the control system can adjust the parameters of the heating element 11 based on the current temperature to achieve the preset temperature, ensuring that the target material is fully melted and reducing volatilization damage.
[0080] For example, taking gallium as an example, the preset temperature can be 40℃, and the temperature control accuracy can be ±1℃.
[0081] In one embodiment, please refer to Figure 4 The alkali adjustment parameters include stirring parameters. The alkali adjustment device 3 includes a housing 31 and a stirring assembly 32. The housing 31 forms an alkali adjustment chamber 3a. The stirring assembly 32 is communicatively connected to the control system. The stirring assembly 32 is used to stir the alkali adjustment chamber 3a, and the control system is used to adjust the stirring parameters of the stirring assembly 32.
[0082] For example, the material of the housing 31 may be polytetrafluoroethylene.
[0083] For example, the stirring assembly 32 includes a base 321, a stirring motor 322, and a stirring paddle 323. The housing 31 and the stirring motor 322 are both mounted on the base 321. One end of the stirring paddle 323 is connected to the stirring motor 322, and the other end of the stirring paddle 323 is located in the alkali adjustment chamber 3a. The stirring motor 322 can be communicatively connected to a control system. The stirring parameter can be the stirring speed. The control system controls the stirring motor 322 to maintain the stirring speed of the stirring paddle 323 between 100 rpm and 500 rpm.
[0084] For example, the impeller 323 may be made of polytetrafluoroethylene.
[0085] Here, by setting up a stirring component 32 and communicating with the control system, the stirring parameters can be adjusted to ensure uniform mixing of the alkaline agent and the target material solution, while also improving the safety of the stirring process.
[0086] As an example, in one embodiment, please refer to Figure 4The outer shell 31 also has a sodium citrate inlet 31a, a vent 31b, and a sodium hydroxide inlet 31c that are connected to the alkali adjustment chamber 3a. One of the two second pipes 44 is connected to the sodium citrate inlet 31a, and the other of the two second pipes 44 is connected to the sodium hydroxide inlet 31c. The vent 31b is used to discharge the gas reacted in the alkali adjustment chamber 3a.
[0087] In one embodiment, please refer to Figure 4 The outer shell 31 includes a first shell 311 and a second shell 312. The first shell 311 forms an alkali-adjusting chamber 3a. The second shell 312 is sleeved on the outer periphery of the first shell 311 to define an interlayer 31d between it and the outer wall of the first shell 311. The interlayer 31d is used to contain coolant. The second shell 312 has an inlet 31e and an outlet 31f that communicate with the interlayer 31d.
[0088] For example, the coolant can be cooling water. The volume of the first housing 311, i.e., the alkali-adjusting chamber 3a, can be 1500 mL.
[0089] Here, by setting up a jacket 31d, an inlet and an outlet 31f, the coolant can be injected into the jacket 31d from the inlet 31e to cool the alkali adjustment chamber 3a. After heat exchange, it can be discharged through the outlet 31f for circulation cooling, reducing the situation of liquid overheating and splashing in the alkali adjustment chamber 3a during the alkali adjustment process.
[0090] In one exemplary embodiment, the inlet 31e is located below the outlet 31f to form countercurrent cooling, which can improve the heat exchange time.
[0091] In one embodiment, please refer to Figure 4 The alkali adjustment device 3 includes an acid-base sensor 33, which is used to monitor the acid-base level of the liquid in the alkali adjustment chamber 3a. The acid-base sensor 33 is connected to the control system, which can adjust the pumping parameters of the pumping device 4 according to the acid-base level of the liquid in the alkali adjustment chamber 3a.
[0092] For example, the pH sensor 33 includes a detection electrode 331, a cable 332 and a display 333. The detection electrode 331 is located in the alkali adjustment chamber 3a and is connected to the display 333 via the cable 332. The display 333 is communicatively connected to the control system and is used to display the pH value.
[0093] For example, when the pH value is lower than the preset value, the control system adjusts the pumping flow rate of the second pump head 411 to add sodium hydroxide solution quantitatively. When the pH value is close to the preset value, the control system reduces the pumping flow rate of the second pump head 411 to the minimum flow rate, such as 0.1 mL / min.
[0094] Here, the pH value of the liquid in the alkali adjustment chamber 3a is obtained in real time by the pH sensor 33 and transmitted to the control system. Based on the current pH value, the pumping parameters of the pumping device 4 can be adjusted so that the pH value is close to the preset value, thereby achieving precise alkali adjustment.
[0095] As an example, in one embodiment, please refer to Figure 1 The dissolving and alkali-adjusting equipment 100 also includes a platform 5, and the melting device 1, the dissolving device 2, the alkali-adjusting device 3 and the pumping device 4 can all be fixedly installed on the platform 5.
[0096] In one exemplary embodiment, the control system is centered around a controller and equipped with a display screen, which may be a touch screen. The display screen integrates input interfaces for sensor signals such as temperature, pH value, liquid level, flow rate, and pressure, as well as output interfaces for the motor and pump head 411. Human-machine interaction is achieved through the touch screen, which can also display real-time parameters of each device, such as melting temperature, dissolution chamber 2a temperature, alkali adjustment pH value, and pumping flow rate of each pump head 411. Historical data curves serve as fault alarm information. Operators can set target parameters via the touch screen, and the control system automatically generates and executes control logic. Furthermore, the control system has a manual / automatic switching function. When the automatic mode fails, it can switch to manual mode, controlling the operation of each device via touch screen buttons, improving the reliability of the dissolution and alkali adjustment equipment 100. Solution transfer between devices is achieved through a six-channel peristaltic pump and pipeline pumping, ensuring no leakage of radioactive materials. The exhaust port 23a of the dissolution chamber 2a and the vent port 31b of the alkali adjustment chamber 3a can be connected to a downstream tail gas adsorption treatment system for further treatment of the tail gas, ensuring safety.
[0097] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of this application are included within the scope of protection of this application.
Claims
1. A dissolving and alkali-adjusting device for irradiated sealed capsule targets, characterized in that, The dissolving and alkali-adjusting equipment includes: A melting device for melting the target material inside the sealed capsule target; A dissolving device having a dissolving chamber and an opening communicating with the dissolving chamber, wherein the molten target material can enter the dissolving chamber through the opening and dissolve within the dissolving chamber; An alkali adjustment device is provided, which has an alkali adjustment chamber communicating with the dissolution chamber, wherein the pH of the dissolution solution of the target material is configured to be adjusted to alkalinity in the alkali adjustment chamber; A pumping device is used to pump a solvent into the dissolving chamber, an alkaline agent into the alkali-adjusting chamber, and to pump the solution of the target material into the alkali-adjusting chamber. The control system is communicatively connected to the melting device, the dissolving device, the alkali adjusting device, and the pumping device. The control system is configured to adjust the melting parameters of the melting device, the dissolving parameters of the dissolving device, the alkali adjusting parameters of the alkali adjusting device, and the pumping parameters of the pumping device.
2. The dissolving and alkali-adjusting equipment according to claim 1, characterized in that, The pumping device includes: A delivery pump, communicatively connected to the control system, the delivery pump having multiple pump heads, the control system being used to control the pumping parameters of each pump head; A first pipe and a first reagent bottle, the first reagent bottle being used to contain the solvent, the first pipe connecting the dissolving chamber and the first reagent bottle, and at least one of the plurality of pump heads being a first pump head, the first pump head being disposed in the first pipe; The second pipe and the second reagent bottle are used to contain the alkaline agent. The second pipe connects the alkali adjustment chamber and the second reagent bottle. At least one of the plurality of pump heads is a second pump head, which is disposed in the second pipe. A third pipe connects the alkali adjustment chamber and the dissolution chamber, and at least one of the plurality of pump heads is a third pump head, which is disposed in the third pipe.
3. The dissolving and alkali-adjusting equipment according to claim 2, characterized in that, There are two of each of the second pump head, the second pipeline, and the second reagent bottle. The alkaline agent includes a complexing agent and an alkalinity adjusting agent. The complexing agent and the alkalinity adjusting agent are respectively placed in two second reagent bottles. Each second reagent bottle is connected to the alkalinity adjusting chamber through a second pump head and a second pipeline.
4. The dissolving and alkali-adjusting equipment according to claim 2, characterized in that, The number of the first pump head, the first pipe, and the first reagent bottle are all two. The solvent includes hydrochloric acid and nitric acid, which are respectively placed in two first reagent bottles. Each first reagent bottle is connected to the dissolving chamber through a first pump head and a first pipe; and / or, At least one of the plurality of pump heads is a fourth pump head, the pumping device includes a fourth pipe, the fourth pipe is connected to the alkali conditioning chamber, and the fourth pump head is disposed in the fourth pipe for discharging the target material after alkali conditioning; and / or, The pumping device includes a pumping backup controller, which is connected to both the control system and the delivery pump.
5. The dissolving and alkali-adjusting equipment according to claim 1, characterized in that, The melting parameters include heating parameters and lifting / lowering parameters, and the melting device includes: A heating element is used to heat and melt the target material inside the sealed capsule target; the control system is connected via a communication link to adjust the heating parameters of the heating element. A lifting assembly, wherein the heating element is disposed in the lifting assembly, the lifting assembly is configured to move the heating element closer to and away from the opening, and the control system is used to adjust the lifting parameters of the lifting assembly.
6. The dissolving and alkali-adjusting equipment according to claim 5, characterized in that, The heating element has a through-hole positioning groove for engaging with the sealing capsule target; and / or, The melting device includes a temperature sensor for measuring the current temperature of the heating element. The control system is communicatively connected to the temperature sensor and can adjust the heating parameters of the heating element according to the current temperature.
7. The dissolving and alkali-adjusting equipment according to claim 1, characterized in that, The dissolving parameters include stirring parameters and heating parameters, and the dissolving apparatus includes: A dissolving vessel having the dissolving cavity and the opening; A stirring and heating assembly is provided, wherein the dissolving vessel is disposed in the stirring and heating assembly, the stirring and heating assembly is used to heat the dissolving vessel and to stir the dissolving chamber, the stirring and heating assembly is communicatively connected to the control system and is used to adjust the heating parameters and stirring parameters of the stirring and heating assembly.
8. The dissolving and alkali-adjusting equipment according to claim 7, characterized in that, The dissolving vessel has an outlet communicating with the dissolving chamber, the outlet communicating with the alkali adjusting chamber, and the outlet is equipped with a filter; and / or, The dissolving device also includes a cover, which is rotatably disposed in the dissolving vessel and is used to open or close the opening.
9. The dissolving and alkali-adjusting equipment according to claim 1, characterized in that, The alkali adjustment parameters include stirring parameters, and the alkali adjustment device includes: The outer shell has the aforementioned alkali-adjusting chamber; The stirring assembly is communicatively connected to the control system. The stirring assembly is used to stir the alkali adjustment chamber, and the control system is used to adjust the stirring parameters of the stirring assembly.
10. The dissolving and alkali-adjusting equipment according to claim 9, characterized in that, The outer casing includes a first casing and a second casing. The first casing forms the alkali-adjusting chamber. The second casing is sleeved on the outer periphery of the first casing to define an interlayer between the second casing and the outer wall of the first casing. The interlayer is used to contain coolant. The second casing has an inlet and an outlet communicating with the interlayer. And / or, The alkali adjustment device includes an acid-base sensor for monitoring the acidity or alkalinity of the liquid in the alkali adjustment chamber. The acid-base sensor is communicatively connected to the control system, which can adjust the pumping parameters of the pumping device according to the acidity or alkalinity of the liquid in the alkali adjustment chamber.