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Production device for preparing radioactive iodine-131 through continuous feeding

A technology for radioactive iodine and production equipment, which is applied in the field of radioisotope preparation, can solve the problems of small processing capacity and inability to continuously feed materials in dry process, so as to reduce unsafe factors, reduce the generation of solid waste, and reduce the dose of personnel exposure. Effect

Active Publication Date: 2020-01-17
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a production device for preparing radioactive iodine-131 by continuous feeding, which solves the problem that the existing dry process has a small processing capacity and cannot continuously feed

Method used

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  • Production device for preparing radioactive iodine-131 through continuous feeding
  • Production device for preparing radioactive iodine-131 through continuous feeding
  • Production device for preparing radioactive iodine-131 through continuous feeding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as Figure 1-Figure 3As shown, a production device for preparing radioactive iodine-131 by continuous feeding includes a retort furnace 2, and the retort furnace 2 includes a heating furnace body 12, and the heating furnace body 12 is provided with an insulating layer, a resistance wire 13 and a thermoelectric Even, the heating furnace body 12 is a rectangular parallelepiped, and the heating furnace body 12 is front and rear opening type, that is, the front end and the rear end of the heating furnace body 12 are provided with a furnace cover, and the furnace cover has an automatic switch cover function, and the furnace cover is formed by The controller controls the automatic opening and closing, the resistance wire 13, the thermocouple and the furnace cover are electrically connected to the controller, the heating furnace body 12 is provided with a T-shaped furnace tube 14, and the T-shaped furnace tube 14 includes a large round tube. The two ends of the large roun...

Embodiment 2

[0045] Such as Figure 1-Figure 4 As shown, the present embodiment is based on embodiment 1, the outlet pipe 18 is connected to the tellurium dioxide trap 3, and the tellurium dioxide trap 3 is connected to the absorption device 4; the tellurium dioxide trap 3 Including a housing 24, a heating and heat preservation device is arranged in the housing 24, a tellurium dioxide trapping coil 23 is arranged in the heating and heat preservation device, and the tellurium dioxide trapping coil 23 is a tubular structure, the The tellurium dioxide collection coil 23 is spirally arranged in the casing 24 , and the two ends of the tubular structure communicate with the gas outlet pipe 18 and the absorption device 4 respectively.

[0046] In this embodiment, the working temperature of the heating and heat preservation device is higher than the iodine desublimation temperature and lower than the boiling point of tellurium dioxide. The content of Te impurity in the product is reduced.

[004...

Embodiment 3

[0050] Such as Figure 1-Figure 4 As shown, the present embodiment is based on embodiment 1 or embodiment 2, and the rear end of the absorption device 4 is connected with a tail gas treatment device 5; Sodium hydroxide solution absorbs iodine vapor, and 0.1-5mol / l sodium hydroxide solution is used to absorb tail gas in the second, third and fourth stages of absorption.

[0051] In this embodiment, the tail gas treatment device 5 is an iodine vapor absorption device, which can ensure complete absorption of iodine in the iodine-131 tail gas.

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Abstract

The invention discloses a production device for preparing radioactive iodine-131 through continuous feeding. The device comprises a dry distillation furnace, which comprises a heating furnace body, wherein a T-shaped furnace tube is arranged in the heating furnace body, and comprises a large circular tube, two ends of the large circular pipe are respectively communicated to a gas inlet pipe I anda gas outlet pipe, the gas outlet pipe is connected to an absorption device, a small circular pipe is vertically arranged on the side wall of the large circular pipe, a material boat is placed in thelarge circular tube, and comprises an upper layer and a lower layer, the upper layer and the lower layer are communicated, the upper layer is a melting pool, the lower layer is a waste pool, the melting pool is arranged below the small circular pipe, a feeding device is arranged above the dry distillation furnace, and comprises a feeding funnel, the bottom of the feeding funnel is communicated tothe small circular pipe through a hollow pipe, a feeding valve I and a feeding valve II are respectively arranged at the upper end and the lower end of the hollow pipe, the device further comprises acontrol system, and a controller for achieving automatic control is arranged in the control system. According to the invention, with the production device, the problems that the existing dry process is small in treatment amount and continuous feeding cannot be achieved are solved.

Description

technical field [0001] The invention relates to the technical field of radioisotope preparation, in particular to a production device for continuously feeding radioactive iodine-131. Background technique [0002] Iodine-131 is a very important medical radioisotope, which is mainly used clinically for the diagnosis of thyroid function, hyperthyroidism and the treatment of thyroid cancer metastases. In addition, iodine-131 is also an important raw material for a variety of labeled drugs, which are used for imaging and killing a variety of solid tumor cells in kidney, liver, myocardium, and brain. However, most of the domestic iodine-131 depends on imports at present. [0003] There are two main production methods for iodine-131: one is to use enriched uranium-235 as the target material, through fission reaction 235 U(n,f) 131 1 obtains iodine-131, but this production process has side reactions, produces many impurities, and the separation and purification process conditions...

Claims

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Application Information

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IPC IPC(8): B01J19/08C01B7/14
CPCB01J19/08C01B7/14
Inventor 张劲松陈云明罗宁贾致军曾俊杰王定娜孙志中
Owner NUCLEAR POWER INSTITUTE OF CHINA
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