Fast cooling type Na<131>I destructive distillation production device

Abstract

The invention discloses a fast cooling type Na<131>I destructive distillation production device. The device comprises a distillation absorber, a charging platform, a carrying platform, a counter weight device, a heating furnace, a slide rail and a workbench and is characterized in that the distillation absorber is partially arranged in the cavity of the heating furnace, the charging platform, thecounter weight device, the heating furnace and the slide rail are fixedly arranged on the workbench, the carrying platform is arranged on the slide rail and slidably connected with the same, the heating furnace, the slide rail and the carrying platform are arranged on one side of the horizontal center line of the workbench, and the charging platform and the counter weight device are arranged on the other side of the horizontal center line of the workbench. The fast cooling type Na<131>I destructive distillation production device has the advantages that high-temperature I-131 steam distilled byhigh-temperature molten reactor-irradiated TeO2 can be fast carried and efficiently captured, the cooling time of a distillation pipe and distillation residues in the distillation pipe is shortened greatly by opening the upper half of the heating furnace and using compressed air flow to carry heating furnace radiation heat, and the production efficiency and safety of Na<131>I can be increased favorably.

Description

technical field [0001] The invention belongs to the technical field of radioisotope preparation, in particular to a fast cooling Na 131 I dry distillation production device. Background technique [0002] Na used in the production of radiopharmaceuticals 131 I raw material, mainly TeO irradiated by high temperature (about 750°C) dry distillation reactor 2 (Tellurium dioxide), prepared by absorbing the radioactive I-131 (iodine-131) vapor in the carrier gas (generally air) with dilute lye (generally NaOH solution with a concentration less than 0.5mol / L). The Institute of Nuclear Physics and Chemistry of the China Academy of Engineering Physics, as well as the domestic China Institute of Atomic Energy and China Nuclear Power Research Institute, have all worked in their Na 131 In the production process, the vacuum pump is used to pump air, and the high-temperature carrier gas in the distillation furnace is directly introduced into the bottom of the absorption bottle for bubbl...

AI Technical Summary

Problems solved by technology

Moreover, the distillation tube and the absorber of the prior art are split, connected by a plastic tube or a rubber tube, and the strong gamma radiation and high temperature of the radioactive iodine-131 in the carrier gas have a greater impact on the service life of the connecting tube. It is prone to aging and cracking in the medium, resulting in the leakage of radioactive iodine-131 vapor, which shortens the service life of the production device and increases the risk of maintenance personnel receiving more radiation doses, which is not conducive to safe production

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