Dry distillation device for producing iodine-131 from reactor irradiation TeO2

Abstract

The invention discloses a dry distillation device for producing iodine-131 from reactor irradiation TeO2. The dry distillation device for producing the iodine-131 from the reactor irradiation TeO2 comprises a heating furnace, a distillation absorber, a feeding table, a carrying table, a balance weight machine and a worktable. The distillation absorber is partially arranged in a cavity of the heating furnace, the heating furnace, the feeding table, the carrying table and the balance weight machine are fixedly arranged on the worktable, the heating furnace and the carrying table are arranged onone side of the horizontal center line of the worktable, and the feeding table and the balance weight machine are arranged on the other side of the horizontal center line of the worktable. The dry distillation device for producing the iodine-131 from the reactor irradiation TeO2 has the advantages that high-temperature I-131 vapor distilled from the high-temperature molten reactor irradiation TeO2can be quickly carried and efficiently captured by the dry distillation device; an upper half furnace body of the heating furnace can be turned over, accordingly, the cooling time for a distillationtube and distillation residues in the distillation tube can be shortened, and the dry distillation device is favorable for improving the Na<131>I continuous production efficiency and safety.

Description

technical field [0001] The invention belongs to the technical field of radioactive isotope preparation, in particular to a heap-irradiated TeO 2 Dry distillation device for producing iodine-131. 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 absorp...

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

Images