Method and system for producing Mo-99 through liquid molten salt reactor

Abstract

The invention provides a method and a system for producing Mo-99 by using a liquid molten salt reactor. The method comprises the following steps: providing a liquid molten salt reactor, wherein a plurality of graphite moderation assemblies containing channels are arranged in the reactor core, the channels of the graphite moderation assemblies are filled with molten salt composed of low-enriched uranium and base salt, and Mo-99 is generated by fission in the liquid molten salt reactor. When the liquid molten salt reactor runs, an on-line solid-liquid separation method is adopted to separate indissolvable solid fission products on line, then a cooling method is adopted to reduce the radioactive activity of the indissolvable solid fission products, and finally a chemical separation method is adopted to separate and recover Mo-99 from the indissolvable solid fission products, so that the preparation of Mo-99 is realized. According to the invention, the production efficiency is improved, operation is convenient and fast, the economic cost is low, the fuel demand quantity is low, the radioactive shielding requirement is low, and the current Mo-99 supply demand problem can be effectively solved.

Description

technical field [0001] The invention relates to the field of nuclear reactor engineering and nuclear technology application, and more specifically relates to a method and a system for producing Mo-99 in a liquid molten salt reactor. Background technique [0002] Medical radionuclides are radioactive nuclides used in medical diagnosis, treatment and disease research, and are suitable for diagnosis and treatment of human diseases. More than 40 million people around the world receive medical radioisotope diagnosis (90%) or treatment (10%) every year, of which Tc-99m accounts for 80% of nuclear medicine diagnostic drugs. Mo-99, the precursor nucleus of Tc-99m, is commercially used as a transport source term for Tc-99m isotope because of its longer half-life (66h) than Tc-99m. According to the estimate of the Organization for Economic Cooperation and Development, the current demand for Mo-99 is about 9000 6-day Ci / week, of which the annual growth rate of demand in developed coun...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method and system for producing Mo-99 in a liquid molten salt reactor, so as to solve the problems of low

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