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    • 4. 发明授权
    • Disposal and decontamination of radioactive polyvinyl alcohol products
    • 放射性聚乙烯醇产品的处理和去污
    • US08686213B2
    • 2014-04-01
    • US13508895
    • 2010-11-12
    • Jin-Kil KimEui-Dong LeeHyun-Ki KimSeong-Jun Hong
    • Jin-Kil KimEui-Dong LeeHyun-Ki KimSeong-Jun Hong
    • G21F9/14
    • G21F9/34G21F9/14
    • Methods and apparatus for decontaminating disposable protective products prepared from polyvinyl alcohol (PVA), used in a nuclear power plant, to less than minimum detectable activity (MDA) are disclosed. In the disclosed methods and apparatus, solid protective products made of PVA, generated from a nuclear power plant, are dissolved into a liquid, and then are decontaminated to less than MDA. The PVA solution decontaminated in this way is concentrated to an appropriate concentration or dried, and finally is subjected to self-disposal. This can fundamentally block the generation amount of combustible waste amounting to 50% or more of low and intermediate level waste of nuclear power plants, thereby considerably contributing to a reduction of the operating expenses of the nuclear power plants. The present invention further relates to methods and apparatus for self-disposing disposable protective products manufactured by conventional polyvinyl alcohol (PVA) through pyrolysis/catalytic oxidation of a PVA solution generated by concentration, and treating the decontaminated PVA solution within a plant. The PVA protective products are dissolved/concentrated/oxidized in water to remove firstly organic matter, and then PVA materials in the PVA solution are completely oxidized into CO2 and H2O by using a small-sized pyrolysis/catalytic oxidation reactor.
    • 公开了将用于核动力装置的聚乙烯醇(PVA)制备的一次性防护产品去污化至少于最小可检测活性(MDA)的方法和装置。 在所公开的方法和装置中,由核电厂生产的由PVA制成的固体保护产品溶解在液体中,然后净化成小于MDA。 以这种方式去除的PVA溶液被浓缩至适当的浓度或干燥,最后进行自我处理。 这可以从根本上阻止核电厂中低档废物的50%以上的可燃废物的发电量,从而大大有助于降低核电厂的运行费用。 本发明还涉及通过常规聚乙烯醇(PVA)通过热分解/催化氧化浓缩产生的PVA溶液和处理植物中去污的PVA溶液来自行布置一次性防护产品的方法和装置。 PVA保护产物在水中溶解/浓缩/氧化,首先除去有机物质,然后使用小型热解/催化氧化反应器将PVA溶液中的PVA材料完全氧化成CO 2和H 2 O.
    • 7. 发明申请
    • Disposal and Decontamination of Radioactive Polyvinyl Alcohol Products
    • 放射性聚乙烯醇产品的处置和去污
    • US20120220809A1
    • 2012-08-30
    • US13508895
    • 2010-11-12
    • Jin-Kil KimUi-Dong LeeHyun-Ki KimSeong-Jun Hong
    • Jin-Kil KimUi-Dong LeeHyun-Ki KimSeong-Jun Hong
    • G21F9/34B01J19/00
    • G21F9/34G21F9/14
    • Methods and apparatus for decontaminating disposable protective products prepared from polyvinyl alcohol (PVA), used in a nuclear power plant, to less than minimum detectable activity (MDA) are disclosed. In the disclosed methods and apparatus, solid protective products made of PVA, generated from a nuclear power plant, are dissolved into a liquid, and then are decontaminated to less than MDA. The PVA solution decontaminated in this way is concentrated to an appropriate concentration or dried, and finally is subjected to self-disposal. This can fundamentally block the generation amount of combustible waste amounting to 50% or more of low and intermediate level waste of nuclear power plants, thereby considerably contributing to a reduction of the operating expenses of the nuclear power plants. The present invention further relates to methods and apparatus for self-disposing disposable protective products manufactured by conventional polyvinyl alcohol (PVA) through pyrolysis/catalytic oxidation of a PVA solution generated by concentration, and treating the decontaminated PVA solution within a plant. The PVA protective products are dissolved/concentrated/oxidized in water to remove firstly organic matter, and then PVA materials in the PVA solution are completely oxidized into CO2 and H2O by using a small-sized pyrolysis/catalytic oxidation reactor.
    • 公开了将用于核动力装置的聚乙烯醇(PVA)制备的一次性防护产品去污化至少于最小可检测活性(MDA)的方法和装置。 在所公开的方法和装置中,由核电厂生产的由PVA制成的固体保护产品溶解在液体中,然后净化成小于MDA。 以这种方式去除的PVA溶液被浓缩至适当的浓度或干燥,最后进行自我处理。 这可以从根本上阻止核电厂中低档废物达到50%以上的可燃废物的发电量,从而大大有助于降低核电厂的运行费用。 本发明还涉及通过常规聚乙烯醇(PVA)通过热分解/催化氧化浓缩产生的PVA溶液和处理植物中去污的PVA溶液来自行布置一次性防护产品的方法和装置。 PVA保护产物在水中溶解/浓缩/氧化,首先除去有机物质,然后使用小型热解/催化氧化反应器将PVA溶液中的PVA材料完全氧化成CO 2和H 2 O.