公开(公告)号：EP2502235B1

公开(公告)日：2019-05-01

申请号：EP10831221.6

申请日：2010-11-12

申请人： Hana Inspection & Engineering Co., Ltd

发明人： KIM, Jin-kil ,  LEE, Ui-dong ,  KIM, Hyun-ki ,  HONG, Seong-jun

IPC分类号： G21F9/06 ,  A62D3/00 ,  C02F1/42 ,  C02F1/66 ,  C02F1/72 ,  G21F9/12 ,  G21F9/14 ,  G21F9/20 ,  C02F101/00

公开(公告)号：EP2502235A1

公开(公告)日：2012-09-26

申请号：EP10831221.6

申请日：2010-11-12

申请人： Hana Inspection & Engineering Co., Ltd

发明人： KIM, Jin-kil ,  LEE, Ui-dong ,  KIM, Hyun-ki ,  HONG, Seong-jun

IPC分类号： G21F9/06 ,  A62D3/00 ,  C02F1/42 ,  C02F1/66 ,  C02F1/72 ,  G21F9/12 ,  G21F9/14 ,  G21F9/20

CPC分类号： G21F9/14 ,  C02F2101/006 ,  G21F9/06 ,  G21F9/12 ,  G21F9/20

摘要： 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.