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Device for extracting gaseous iodine in loop for producing iodine-125

An extraction device and loop technology, applied in the field of radioisotope preparation, can solve problems such as hidden safety hazards

Active Publication Date: 2021-09-07
四川海同同位素科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an extraction device for gaseous iodine in a circuit for producing iodine-125, aiming to solve the potential safety hazard caused by the volatilization of gaseous iodine-125 in the existing circuit device for iodine-125 production, Efficient recovery, simplification of iodine-125 extraction operation process, reduction of personnel exposure dose, taking into account the requirements of high air tightness, saving costs

Method used

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  • Device for extracting gaseous iodine in loop for producing iodine-125
  • Device for extracting gaseous iodine in loop for producing iodine-125
  • Device for extracting gaseous iodine in loop for producing iodine-125

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An extraction device for gaseous iodine in a circuit for producing iodine-125, comprising a turntable 1, an extraction mechanism, and a fixed seat 2, the extraction mechanism is installed in the turntable 1, and the extraction mechanism is provided with a first valve for gas circulation. A gas passage, two second gas passages 5 for gas circulation are provided in the fixed seat 2, one of the second gas passages 5 is the passage for the gas to enter, and the other second gas passage 5 is the passage for the gas to flow out. 1 and the fixed seat 2 are symmetrically provided with two gas nozzles 3, and each gas nozzle 3 is provided with a gas channel communicating with the outside, and one end of each gas nozzle 3 is inserted into the turntable 1 and connected with the thread, and connected with the extraction mechanism The first gas channel in the butt joint and communicated, the other end of each gas nozzle 3 is movably inserted into the fixed seat 2, and is respectively ...

Embodiment 2

[0030] This embodiment is an improvement carried out on the basis of Embodiment 1.

[0031] On the basis of Example 1, the extraction mechanism includes two joints 6 and a column core 7, the column core 7 is a hollow tubular structure, and the column core 7 is filled with iodine-125 adsorption material. Each of the joints 6 is docked at both ends of the column core 7, one of the joints 6 is provided with an air inlet channel 401 communicated with the outside, and the other joint 6 is provided with an air outlet channel 402 communicated with the outside , the air inlet channel 401 and the air outlet channel 402 are L-shaped channels, and one end of the air inlet channel 401 and the air outlet channel 402 is respectively butted with the two ends of the inner hole of the column core 7, and the air inlet channel 401, The other ends of the gas outlet channels 402 are respectively connected to the gas channels of the gas nozzles 3 . The gas inlet channels 401 , the inner holes of th...

Embodiment 3

[0036] This embodiment is an improvement carried out on the basis of embodiment 1 and embodiment 2.

[0037] The end of the fixed seat 2 close to the turntable 1 is also provided with a clamping plate 14 and an extension plate 15 respectively, the extension plate can be integrally formed with the fixed seat 2, and the turntable 1 can be placed on the clamping plate 14 and the extension plate 15 Between, the end of the extension plate 15 away from the fixed seat 2 is provided with a lock plate 16, and the positioning bolt 18 connects the lock plate 16 and the extension plate 15, and the lock plate 16 can rotate relative to the extension plate 15, An end of the clamping plate 14 away from the fixing seat 2 is provided with a through hook groove 17, and the end of the lock plate 16 away from the extension plate 15 can be rotated into the hook groove 17, and can be connected with the hook groove 17. Detachable fixation, such as pins can be used to fix the lock plate 16 and the hoo...

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Abstract

The invention belongs to the field of radioactive isotope preparation, and relates to a device for extracting gaseous iodine in a loop for producing iodine-125. The device comprises a turntable, an extraction mechanism and a fixed seat; the extraction mechanism is mounted in the turntable, one ends of two symmetrically arranged gas nozzles are fixedly connected with the turntable and are butted and communicated with a first gas channel in the extraction mechanism, the other ends of the gas nozzles are inserted into the fixed seat and are respectively butted and communicated with two second gas channels in the fixed seat; and the two second gas channels, the two gas nozzles and the first gas channel form a closed circulating gas loop for gas to enter and exit, and an iodine separation material is arranged in the first gas channel. The extraction mechanism can be plugged on the loop device as an independent structure. The extraction mechanism can prevent iodine-125 generated in the loop from participating in circulation loop irradiation. During recovery, only the extraction mechanism needs to be leached, so that the processes of xenon-125 gas transfer, liquid nitrogen freezing, target cylinder cutting and the like are reduced, the operation process is simplified, the device can be repeatedly used, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of radioactive isotope preparation, and relates to an extraction device for gaseous iodine in a loop for producing iodine-125, and is particularly suitable for the extraction and separation of iodine-125 in the production of iodine-125 by continuous circulation loop irradiation. Background technique [0002] Iodine-125 is an important medical radionuclide (T 1 / 2 =59.407d), due to its longer half-life, moderate energy, and less radiation damage to human tissues, it has been widely used in biomedicine, radioimmunodiagnosis, and brachytherapy for tumor treatment. However, at present, domestic iodine-125 raw materials are completely dependent on imports for a long time. Therefore, it is of great scientific and practical significance to develop the new iodine-125 production process, break the foreign monopoly, master the core key technologies, and realize the localization of iodine-125 raw materials to promote t...

Claims

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Application Information

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IPC IPC(8): B01D59/26C01B7/14
CPCB01D59/26C01B7/14
Inventor 李波宋斌吴建荣张劲松陈云明罗宁孙志中曾俊杰贾致军王海军顾思维胡映江王磊
Owner 四川海同同位素科技有限公司
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