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67 条记录 (耗时 0.011 秒)

    Continuous denitration apparatus
    16.
    发明公开
    Continuous denitration apparatus 失效
    Vorrichtungfürkontinuierliclic Denitrierung。

    公开(公告)号：EP0590411A2

    公开(公告)日：1994-04-06

    申请号：EP93114837.3

    申请日：1993-09-15

    申请人： DORYOKURO KAKUNENRYO KAIHATSU JIGYODAN

    发明人： Takahashi, Yoshiharu

    IPC分类号： F26B17/20 ,  F26B3/347 ,  G21C19/42

    CPC分类号： F26B3/347 ,  C01G43/01 ,  F26B17/20 ,  Y10S422/903

    摘要： A continuous denitration apparatus capable of ensuring mass processing of a nitrate solution of a nuclear fuel and a continuous stable operation. By a rotation of screws, uranium nitrate solution supplied from a liquid feed inlet is continuously conveyed. A trough is divided into a concentration zone, a denitration zone and a drying zone. Microwaves emitted from a microwave incident inlet pass through an opening part provided in a critical shield plate for covering the upper part of the trough and are applied to the uranium nitrate solution of high concentration and high viscosity, conveyed by the screws. The uranium nitrate solution is denitrated to prepare a denitrated product (uranium trioxide). This denitrated product is dried in the drying zone to obtain powder to be discharged from an outlet. The deposition adhering to the screws in the concentration zone can be exfoliated by moving the opening part a little to the concentration zone side to prevent a blocking of the rotation of the screws. In the drying zone, local heating by the microwaves can be prevented.

    摘要翻译： 一种能够确保核燃料的硝酸盐溶液的大量加工和连续稳定运转的连续脱硝装置。 通过旋转螺杆，连续输送从液体进料口供给的硝酸铀溶液。 槽分为浓缩区，脱硝区和干燥区。 从微波入射入射出的微波通过设置在临界屏蔽板上的开口部分，用于覆盖槽的上部，并被施加到通过螺钉输送的高浓度和高粘度的硝酸铀溶液中。 将硝酸铀溶液脱硝以制备脱硝产物（三氧化铀）。 将该脱硝产物在干燥区中干燥，得到从出口排出的粉末。 通过将开口部分稍微移动到集中区域侧，附着在浓缩区域中的螺钉的沉积物可以被剥离，以防止螺钉的旋转阻塞。 在干燥区，可以防止微波局部加热。

    Continuous dissolution method and apparatus for spent nuclear fuel
    18.
    发明公开
    Continuous dissolution method and apparatus for spent nuclear fuel 失效
    连续解调方法和装置用于空载核燃料清除方法和装置

    公开(公告)号：EP0259747A3

    公开(公告)日：1989-12-06

    申请号：EP87112695.9

    申请日：1987-08-31

    申请人： HITACHI, LTD.

    发明人： Hirose, Yasuo

    IPC分类号： G21C19/46 ,  G21F9/08 ,  G21F9/06 ,  G21C19/42

    CPC分类号： G21C19/46 ,  Y02W30/883 ,  Y10S422/903

    摘要： A continuous dissolution apparatus and a dissolving method for spent nuclear fuel in which a container (2) for holding a dissolution processing solution (1) is continuously supplied with nitric acid from a feed port (3), while the processing solution is continuously drawn out from an outlet (4) are provided. Baskets (71 - 74) in the container are packed with spent-­fuel chops (6), which are continuously dissolved by the processing solution. The container is provided with a solution reserving portion (4) for lowering the concentration of radioiodine contained in the dissolution processing solution, and a partition wall (10) is formed between the solution reserving portion and a container body. The dissolution processing solution having overflowed from the upper edge of the partition wall flows into the solution reserving portion (14) through a perforated plate column (11). The solution reserving portion is furnished with a heating coil (12) for heating the dissolution processing solution and generating steam, and a gas blow pipe (13) for injecting an inert or nitrogen oxide gas into the solution. Thus, elementary iodine within the dissolution processing solution of the solution reserving portion is expelled from the off-gas outlet (5) of the container together with the steam, and the radioiodine concentration in the dissolution processing solution of the solution staying portion can be lowered.

    Continuous dissolution method and apparatus for spent nuclear fuel
    19.
    发明公开
    Continuous dissolution method and apparatus for spent nuclear fuel 失效
    Verfahren und Vorrichtung zum kontinuierlichenAuflösenvon verbrauchtem Kernbrennstoff。

    公开(公告)号：EP0259747A2

    公开(公告)日：1988-03-16

    申请号：EP87112695.9

    申请日：1987-08-31

    申请人： HITACHI, LTD.

    发明人： Hirose, Yasuo

    IPC分类号： G21C19/46 ,  G21F9/08 ,  G21F9/06 ,  G21C19/42

    CPC分类号： G21C19/46 ,  Y02W30/883 ,  Y10S422/903

    摘要： A continuous dissolution apparatus and a dissolving method for spent nuclear fuel in which a container (2) for holding a dissolution processing solution (1) is continuously supplied with nitric acid from a feed port (3), while the processing solution is continuously drawn out from an outlet (4) are provided. Baskets (71 - 74) in the container are packed with spent-­fuel chops (6), which are continuously dissolved by the processing solution. The container is provided with a solution reserving portion (4) for lowering the concentration of radioiodine contained in the dissolution processing solution, and a partition wall (10) is formed between the solution reserving portion and a container body. The dissolution processing solution having overflowed from the upper edge of the partition wall flows into the solution reserving portion (14) through a perforated plate column (11). The solution reserving portion is furnished with a heating coil (12) for heating the dissolution processing solution and generating steam, and a gas blow pipe (13) for injecting an inert or nitrogen oxide gas into the solution. Thus, elementary iodine within the dissolution processing solution of the solution reserving portion is expelled from the off-gas outlet (5) of the container together with the steam, and the radioiodine concentration in the dissolution processing solution of the solution staying portion can be lowered.

    摘要翻译： 一种用于废核燃料的连续溶解装置和溶解方法，其中用于保持溶解处理溶液（1）的容器（2）从进料口（3）连续地供给硝酸，同时处理溶液被连续抽出 从出口（4）提供。 容器中的篮子（71-74）装有废燃料剁（6），其被处理溶液连续溶解。 容器设有用于降低溶解处理溶液中所含的放射性碘浓度的溶液保留部分（4），并且在溶液储存部分和容器体之间形成分隔壁（10）。 从隔壁的上边缘溢出的溶解处理液通过多孔板塔（11）流入溶液保留部（14）。 溶液保留部分配备有用于加热溶解处理溶液并产生蒸汽的加热线圈（12），以及用于将惰性或氮氧化物气体注入溶液中的气体吹送管（13）。 因此，溶液保留部分的溶解处理溶液中的元素碘与蒸汽一起从容器的废气出口（5）排出，并且溶液滞留部分的溶解处理溶液中的放射性碘浓度可以降低 。

    Verfahren und Ofen zur Beseitigung radioaktiver Abfälle
    20.
    发明公开
    Verfahren und Ofen zur Beseitigung radioaktiver Abfälle 失效
    方法和炉处置的放射性废物。

    公开(公告)号：EP0143364A1

    公开(公告)日：1985-06-05

    申请号：EP84113300.2

    申请日：1984-11-05

    申请人： SIEMENS AKTIENGESELLSCHAFT

    发明人： Queiser, Horst, Dipl.-Ing. ,  Meininger, Siegfried, Dipl.-Ing. ,  Kleinschroth, Karl-Heinz, Dipl.-Ing.

    IPC分类号： G21F9/32

    CPC分类号： G21F9/32 ,  Y10S159/12 ,  Y10S422/903

    摘要： Zur Beseitigung radioaktiver Abfälle kann man einen Ofen (1) verwenden, der Elektroden (20, 31) zur elektrischen Erhitzung aufweist. Der Ofen (1) kann am unteren Ende einen Auslaß (38) für Schlackenstoffe haben sowie eine Gasabfuhrleitung (43). Sein Schacht (30) umfaßt einen selbsttragenden Rohrkörper (26), der in einem Metallgehäuse (13) lösbar angeordnet ist. Am oberen Ende des Schachtes kann eine Leitung (50) für die Zufuhr von Wasser angeschlossen sein. Damit wird kohlenstoffhaltiger Abfall, gegebenenfalls auch Kohlenstoff eines Kohlenbettes, zu Wassergas (CO + H2) umgesetzt, das nach einer Reinigung in einer Abgasanlage verbrannt wird. Der Auslaß des Metallgehäuses umfaßt einen beweglichen Rost (38).

    摘要翻译： 对于放射性废物处置，可以使用一个炉（1），用于电加热具有电极（20，31）。 所述炉（1），在其下端为炉渣材料的出口（38）具有和气体排出管线（43）。 自己的时隙（30）包括可拆卸地设置在金属壳体（13）的自支承管状体（26）。 在轴线的上端（50）可以被连接，用于水的供应。 因此，碳质废料，任选地还碳碳床，以水气（CO + H 2），其在废气系统清洗后燃烧的实现。 所述金属外壳的所述出口包括一个活动炉箅（38）。