Target piece for producing C-14 isotope by heavy water reactor

A technology of C-14 and isotopes, which is applied in specific isotope recovery, transformation in nuclear reactors, devices for radiation transformation of chemical elements, etc., can solve the problems of difficult expansion of production scale and low output of production reactors

Pending Publication Date: 2021-07-20
SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, Canada's Chalk River production reactor has been decommissioned, and isotope production has stopped; Russia's MAYAK company's production reactor has a low output, and it mainly supplies the domestic market; major pharmaceutical companies in the United States have jointly applied to the Department of Energy to increase their domestic production capacity. 14 C production capacity, but currently its 14 C production scale is still difficult to expand

Method used

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  • Target piece for producing C-14 isotope by heavy water reactor
  • Target piece for producing C-14 isotope by heavy water reactor
  • Target piece for producing C-14 isotope by heavy water reactor

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1 As shown, in this embodiment, the target for producing C-14 isotope in a heavy water reactor of the present invention consists of a target cylinder assembly 3 or an absorbing rod assembly 4 , an end plate 2 , a connecting rod 1 and a steel wire rope 11 . The target tube assembly 3 or the absorbing rod assembly 4 is arranged in a circular shape around the connecting rod 1 , and the arrangement position is fixed by the upper and lower end plates 2 . The target tube assembly 3 or the absorbing rod assembly 4 and the end plate 2 can be connected in various ways such as welding, screw connection, snap-fit ​​connection and the like. The quantity of the target tube assembly 3 or the absorbing rod assembly 4 is determined according to the C-14 output requirement and the reactivity requirement to the target, and only the target tube assembly 3 can be loaded in the position where the reactivity adjustment is not required, and the absorbing rod assembly 4 is not l...

Embodiment 2

[0044] Such as Figure 5 and Figure 6 As shown, in the present embodiment, the target cylinder assembly 3 is composed of a cladding 34, a cladding 35 and two end plates 36 to form a sealed space, and the inner packaging target material 37 forms an annular target cylinder assembly 3; the absorbing rod assembly 4 is formed by the cladding 44. The casing 45 and the two end plates 46 form a sealed space, and the absorber material 47 is encapsulated inside to form a ring-shaped absorbing rod assembly 4 . The ring-shaped target tube assembly 3 and the ring-shaped absorption rod assembly 4 are concentrically arranged and connected by ribs 12 . A connecting rod 1 is installed in the annular center of the inner ring, and the connecting rod 1 and the end plate 2 can be connected by means of welding or threading. By adjusting the size, the positions of the annular target tube assembly 3 and the annular absorption rod assembly 4 can be interchanged. According to the requirement of rea...

Embodiment 3

[0049] Such as figure 1 and Figure 5 As shown, its overall structure is similar to that of Examples 1 and 2, but does not include the absorbent rod assembly.

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Abstract

The invention aims to disclose a target piece for producing C-14 isotope by a heavy water reactor, the target piece comprises a connecting rod and an end plate, a target cylinder assembly or an absorption rod assembly is arranged around the connecting rod, and the target cylinder assembly or the absorption rod assembly is fixed at the upper end and the lower end of the arrangement position of the target cylinder assembly or the absorption rod assembly through the end plate. The connecting rod is connected with the upper positioning mechanism and is used for positioning the target piece; compared with the prior art, the target piece is placed in the reactor core of the heavy water reactor, and the C-14 isotope is generated by irradiation of thermal neutrons, so that the industrial production of the C-14 isotope can be realized, the production capacity of the C-14 can be improved, the foreign technical blockade can be broken, and the discourse right of the international isotope transaction market can be obtained; and the development of industries such as domestic biological medicine, environmental protection and isotope labeling detection is promoted, and the aim is fulfilled.

Description

technical field [0001] The invention relates to a target for producing C-14 isotope, in particular to a target for producing C-14 isotope in a heavy water reactor. Background technique [0002] 14 C is a pure β-radioactive isotope, which can be made into carbon-labeled compounds for detection and tracing, and is widely used in agriculture, industry, medicine, and biological sciences. Year 2009 14 The annual market demand for C has reached 1000-2000Ci. Since 2010, 14 There is a gap in the supply of C radioactive sources, and the price has increased by 5 to 10 times in 6 years; on the other hand, 14 The market demand for C marking is increasing day by day. For example, many countries including China have begun to require new drugs and even generic drugs to be tested 14 C Pharmacokinetic analysis. [0003] At present, the international industrialized production 14 C The countries with radioactive source capabilities mainly include: Canada, Russia and the United States. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21G1/00G21G1/02
CPCG21G1/02G21G1/001G21G2001/0094
Inventor 党宇陈向阳李波韩宇卢俊强周云清汤春桃叶青
Owner SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD
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