Tritium contaminated metal decontaminating and tritium recovery system
A recovery system and metal technology, applied in the direction of chemical instruments and methods, separation of dispersed particles, cleaning methods and appliances, etc., can solve problems such as tritium purification and recycling, and achieve the effect of pollution degradation or recovery and reuse
Active Publication Date: 2016-11-09
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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The "Oxidative Tritium Decontamination System" heating oxidation decontamination system invented by the Plasma Physics Laboratory (PPPL) of Princeton University, using this decontamination system for routine decontamination verification tests, the decontamination factor (DF) of tritium is greater than 100, achieving High decontamination efficiency, but the decontamination process does not consider the purification and recycling of tritium
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[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0035] Such as figure 1 As shown, the gas introduction device 16, heating analysis device 1, online measurement device I2, pneumatic valve IV18, air pump I3, catalytic oxidizer 4, molecular sieve collection device 5, Pneumatic valve Ⅰ6, suction pump Ⅱ7, pneumatic valve Ⅱ8, online measuring device Ⅱ9, pneumatic valve Ⅲ10, exhaust gas discharge pipe 15 are connected sequentially through pipes;
[0036] The pneumatic valve IV18 is a three-way, the inlet is an online measuring device I, one of the outlets is connected to the air pump I3, and the other outlet is connected to the adsorption filter 13, filter separator 12, adsorption filter bed 14, pneumatic valve V19, The gas collection devices 11 are sequentially connected through pipelines;
[0037] The pneumatic valve V19 is a three-way, the inlet is an adsorption filter bed, one of the outlets is connected to...
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The invention discloses a tritium contaminated metal decontaminating and tritium recovery system. Metal to be decontaminated in a heating analysis device is heated; meanwhile, gas is introduced for carrying belt exchange; tritium mixed tail gas generated by decontaminating is subjected to different treatment according to contaminated metal attachment oil contamination and different tritium contamination degrees; the adsorption and purification standard reaching discharging or recycling and reusing of decontaminated tritium mixed tail gas is realized. The system has the advantages that the fast decontaminating of tritium contaminated metals is realized; the contamination degradation or recovery reuse function of the tritium contaminated metal is met; through three-level filtering adsorption, the problem that a system pipeline is easy to block is solved; meanwhile, the purification and recovery reutilization of high-activity-concentration tritium is realized; the environment discharging quantity and the intake dosage of tritium process field workers are reduced. The system is suitable for decontamination and tritium recovery of tritium contaminated metals generated in places such as nuclear power stations, tritium target production places, neutron generator production places, nuclear facility decommissioning places and fusion energy source research places.
Description
technical field [0001] The invention belongs to the technical field of radiation protection and environmental protection, and in particular relates to a tritium-contaminated metal decontamination purification and tritium recovery system. Background technique [0002] Facilities involving tritium operations at home and abroad will produce a certain amount of tritium-contaminated metals, such as stainless steel pipelines and valves. At present, the general treatment method for tritium-contaminated metals at home and abroad is to decontaminate first, and then classify or reuse objects according to the measurement results of decontamination. However, considering that tritium is an important strategic resource, it is necessary to separate and recover tritium. In addition, because tritium mainly exists in the form of tritiated water and tritium gas in the air, under normal temperature, normal pressure, and normal humidity, half of HT will be converted into HTO in about 60 days, a...
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IPC IPC(8): B01D59/02B01D59/26B08B7/00
CPCB01D59/02B01D59/26B08B7/0071
Inventor 谢云石正坤杜阳但贵萍成琼
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF