发明名称 |
METHOD FOR REMOVAL OF RADIOACTIVE CESIUM AND FACILITY THEREFOR |
摘要 |
To provide a method and an apparatus for removing radioactive cesium from waste containing radioactive cesium at low cost. A radioactive cesium removal apparatus 1 including: an incinerator 22 for burning an inflammable waste polluted with radioactive cesium; a suspension preheater 23 for, with the combustion exhaust gas G5 and a sensible heat of the incineration ash of a combustible C discharged from the incinerator, generating calcium oxide or/and magnesium oxide from a source of calcium oxide or/and a source of magnesium oxide, cyclones of the suspension preheater being arranged in multistages; a rotary kiln 21 for burning an inorganic substance S polluted with radioactive cesium together with the calcium oxide or/and the magnesium oxide and the incineration ash D3 including the radioactive cesium; and collectors 31, 32 for collecting cesium volatilized in the rotary kiln. |
申请公布号 |
US2014343342(A1) |
申请公布日期 |
2014.11.20 |
申请号 |
US201214357519 |
申请日期 |
2012.10.30 |
申请人 |
TAIHEIYO CEMENT CORPORATION |
发明人 |
Ogiri Tetsuo;Okamura Souichirou;Honma Kenichi |
分类号 |
C04B7/44;F23J1/02;F23J15/02;G21F9/32 |
主分类号 |
C04B7/44 |
代理机构 |
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代理人 |
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主权项 |
1. A radioactive cesium removal method comprising the steps of:
burning an inflammable waste polluted with radioactive cesium; with the combustion exhaust gas and a sensible heat of the incineration ash, generating calcium oxide or/and magnesium oxide from a source of calcium oxide or/and a source of magnesium oxide, and collecting the incineration ash including the radioactive cesium from the combustion exhaust gas; burning said calcium oxide or/and said magnesium oxide, the recovered incineration ash including the radioactive cesium and an inorganic substance polluted with radioactive cesium; and collecting the radioactive cesium volatilizing in said burning by cooling an exhaust gas discharged from the burning process to obtain a decontaminated product. |
地址 |
MINATO-KU JP |