Production apparatus and oxidative combustion method of organic tritium carbon sample

An organic tritium and sample technology, applied in the field of radioactive detection, to achieve high oxygen content, improve recovery rate, and prevent open flames from burning

Inactive Publication Date: 2017-07-21
SHANGHAI HAPSTAR MECHANICAL & ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the deficiencies of the above-mentioned prior art, and provides a device for preparing an organic tritium carbon sample and an oxidative combustion method thereof. Sufficient and other problem...

Method used

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  • Production apparatus and oxidative combustion method of organic tritium carbon sample
  • Production apparatus and oxidative combustion method of organic tritium carbon sample

Examples

Experimental program
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Embodiment 1

[0028] A combustible tritium, carbon-14 sample preparation system, the combustible tritium, carbon-14 sample preparation system is an open or closed structure, including a reaction working tube 1 for oxidation reaction of combustible samples; The oxidation combustion furnace 2 that provides heating for the reaction working tube 1 and the absorption device 3 used for recovering and sampling the gas generated by the oxidation reaction of combustibles.

[0029] The reaction working tube 1 includes a pipe body 11 and a first air inlet 12, a second air inlet 13, and an air outlet 14 provided on the pipe body 11; the oxidation combustion furnace 2 includes a first temperature controller 21, a second Thermostat 22, the 3rd thermostat 23, heating wire 24, thermal insulation material plate 25 and heating zone 26, described thermal insulation material plate 25 divides heating zone 26 into catalytic reaction zone 261, sample stacking zone 262, sample The recovery area 263 , the sample st...

example 2

[0032] According to another preferred example 2 of the present invention, the organic tritium carbon oxidation combustion method provided comprises the following steps:

[0033] a. Edit the heating program of the catalytic zone: 10°C / min to 750°C and maintain.

[0034] b. Edit the heating program in the recovery area: 5.3°C / min to 400°C and maintain.

[0035] c. Sample heating program editing: Generally speaking, different samples can be heated and burned with different programs. Facing the following table of plant sample procedures in this column:

[0036] temperature (°C) time / rate Room temperature—350 1°C / min 350 keep for 30min 350—700 4℃ / min 700 keep for 120min

[0037] d. Simultaneously open the catalytic area and the recovery area, and flush from the first air inlet and the second air inlet respectively for 10 minutes. Make the oxygen volume of the first air inlet 0.05L / min, the nitrogen volume 0.15L / min, and the oxygen volume ...

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Abstract

The present invention discloses a preparation apparatus and an oxidative combustion method of an organic tritium carbon sample. The preparation apparatus comprises a reaction working pipe, an oxidative combustion furnace and an absorption device, wherein the reaction working pipe comprises a pipe body, a first gas inlet hole, a second gas inlet hole and a gas outlet hole, a heating zone is arranged in the oxidative combustion furnace and is sequentially divided into a catalytic reaction zone, a sample stacking zone and a sample recovery zone, the lower portions are respectively provided with a temperature controller, the reaction working pipe is horizontally arranged in the oxidative combustion furnace, the pipe body penetrates through the heating zone, the gas outlet hole is connected to the absorption device, the absorption device comprises a collection bottle and a low temperature cold trap, the collection bottle is arranged in the low temperature cold trap, and the gas outlet hole is connected to the collection bottle. According to the present invention, the structure is simple, the problems of open fire production caused by combustion, quartz pipe bursting, incomplete sample combustion and the like during the sample treatment process are effectively prevented, the generated water has the clear color, the sample treatment capacity is high, the sample absorption rate of the combustible materials such as tritium and carbon-14 is substantially improved, and the sample measurement requirements in the modern industry are met.

Description

technical field [0001] The invention relates to the technical field of radioactivity detection, in particular to a device for preparing an organic tritium carbon sample and an oxidation combustion method thereof, which can effectively solve defects such as open flame generated by sample combustion, quartz tube burst, and insufficient sample combustion. Background technique [0002] During the reprocessing of nuclear fuel, carbon-14 and tritium are released during the shearing and disintegration stages of the fuel. These nuclides are readily taken up by crops and require monitoring for these nuclides in environmental materials and in decommissioned materials or low-level waste that are shipped to storage. [0003] In the prior art, there are still some problems in the oxidative combustion of organic tritium and the capture of generated water, such as open flame combustion of biological samples, easy explosion of quartz tubes during oxidative combustion, incomplete oxidation o...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N31/12
CPCG01N1/28G01N31/12
Inventor 杨庚陈坚剑王勇廖慧
Owner SHANGHAI HAPSTAR MECHANICAL & ELECTRICAL EQUIP
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