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

A mo-99, molten salt reactor technology, applied in the direction of reactor fuel material, reactor/accelerator external conversion, reduction of greenhouse gases, etc., can solve the problems of difficult chemical technology, high economic cost, low production efficiency, etc.

Active Publication Date: 2021-05-28
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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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 production efficiency, difficult chemical technology and economic cost in the production of Mo-99 by irradiating solid targets in the prior art. advanced questions

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

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with specific embodiments. It should be understood that the following examples are only used to illustrate the present invention but not to limit the scope of the present invention.

[0035] According to a preferred embodiment of the present invention, a system for producing Mo-99 in a liquid molten salt reactor is provided. Such as figure 1 As shown, the system mainly includes: the main circuit of the molten salt reactor formed by the liquid molten salt reactor and the heat exchanger in series; a bypass including a solid-liquid separation device is set beside the main circuit of the molten salt reactor, through which the solid-liquid separation device Realize the on-line separation of refractory solid fission products; and the cooling tank for cooling refractory solid fission products; wherein, the core of the liquid molten salt reactor is arranged with several graphite moderator components containin...

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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...

Claims

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Application Information

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IPC IPC(8): G21G1/08G21C3/54
CPCG21G1/08G21C3/54Y02E30/30
Inventor 余呈刚朱贵凤邹春燕康旭忠伍建辉严睿陈金根邹杨蔡翔舟
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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