Medical isotope production reactor with uranium fuel saving
A technology of isotope and uranium fuel, which is applied in the field of uranium fuel saving in medical isotope production reactors, can solve the problem of large loss of uranium material, and achieve the effect of saving uranium material and simple and practical structure
Active Publication Date: 2017-02-08
NUCLEAR POWER INSTITUTE OF CHINA
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Problems solved by technology
During the operation life of the reactor, as many as 2,000 to 4,000 medical isotope extraction processes are performed, and the residual uranium on the flushing extraction column is discarded, resulting in a large loss of uranium material
Method used
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[0037] Attached below figure 1 The present invention is described in further detail.
[0038] Example design: 200kW uranium-saving medical isotope production reactor
[0039] The core production structure of the stack mainly includes:
[0040] Flat-bottomed cylindrical stainless steel core vessel 1, containing core liquid 3: UO 2 (NO 3 ) 2 And the air cavity 4 above it, the core feed liquid 3 is radially divided into inner and outer areas, and the inner area is arranged with control rod guides 2, including two safety rod guides, two automatic adjustment rod guides and two compensation rod guides, each control rod The conduit is sealed and welded to the upper cover and the lower bottom of the core vessel 1, the inside of each control rod conduit is water, and the outside of the control rod conduit is connected to the fuel solution UO 2 (NO 3 ) 2 Contact, the safety rods, automatic adjustment rods and compensation rods installed in the control rod duct 2 can move up and d...
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The invention discloses a medical isotope production reactor with uranium fuel saving. The main structural characteristics of the medical isotope production reactor are that a concentrated liquid overflow port is added in an acidication tank, a liquid discharge quantity indication tank is connected through a pipeline, the bottom pipeline of the liquid discharge quantity indication tank is connected to the feed liquid discharge pipeline of a core vessel, from an acidication tank concentrated liquid overflow port pipeline, by way of a liquid discharge quantity indication tank, the washing water discharge pipeline of the liquid discharge quantity indication tank, the feed liquid discharge pipeline connected to the core vessel, after accessing and washing a medical isotope extraction column and discharging washing water into a storage tank, a washing water pipeline system of acidication tank washing extraction column is formed. By using the system, after starting and stopping the reactor to carry out isotope extraction in each time, the feed liquid is stored in the storage tank, then by using the system, the washing water with remaining uranium after washing the extraction column is discharged into the storage tank, the washing water and the feed liquid with isotope extraction in the tank are mixed, in a next time of starting the reactor, dilute feed liquid is concentrated to the initial fuel concentration of a previous time of reactor starting, and a lot of uranium fuels are saved in the life cycle of 20 years of the reactor.
Description
technical field [0001] The invention relates to a "water boiler" type medical isotope production reactor technology, in particular to a method for saving uranium fuel in the medical isotope production reactor. Background technique [0002] The medical isotope production reactor technology was developed from the "water boiler" type solution reactor. Due to the relatively small scale and low power of the "water boiler" solution reactor, the amount of extracted medical isotopes is very limited, and most of the "water boiler" solution reactors in the world have been shut down and discarded due to various reasons such as equipment aging and process technology. At present, there is no large-scale dedicated solution fuel medical isotope production reactor in the world. [0003] The uranium fuel-saving medical isotope production reactor applied for in this case is designed to run for 24 to 48 hours each time, and then shut down for cooling. After cooling, the feed liquid is passed ...
Claims
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IPC IPC(8): G21G1/02
CPCG21G1/02
Inventor 吴英华
Owner NUCLEAR POWER INSTITUTE OF CHINA