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    • 9. 发明专利
    • Solidification processing method of radioactive waste
    • 放射性废物的固体加工方法
    • JP2009281964A
    • 2009-12-03
    • JP2008136490
    • 2008-05-26
    • Toshiba Corp株式会社東芝
    • MIKURA MICHITAKASATO TATSUAKIKAWABE AKIHIROOKANO TOSHIAKIOKITA SOSHIYAMASHITA TAKEOHARUGUCHI YOSHIKOSHOJI YUICHIKANEKO MASAAKI
    • G21F9/30
    • PROBLEM TO BE SOLVED: To provide a solidification processing method of radioactive wastes capable of solidifying a radioactive waste to have a highly reduced volume and high strength by an easy process in a short time.
      SOLUTION: A binder in a powder form (powdery binder) 10 formed by mixing at least an inorganic binder composed of an alkali silicate compound, a curing accelerator composed of a cement material, and a lubricant is added to a radioactive waste in a powder form (dried powdery material) 11 obtained by drying a radioactive waste and processing it into a powder form, and the mixture is mixed with a high speed vertical blade mixer 1. Subsequently, water 12 is added as a binder auxiliary, and the powdery mixture 13, which is a mixture obtained by mixing with the high speed vertical blade mixer 1, is press-molded into a pellet form by a granulating machine 2 and cured to provide a granulated material 14.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够在短时间内通过简单的方法使放射性废物固化而具有高度减小的体积和高强度的放射性废物的固化处理方法。 解决方案:将至少由碱性硅酸盐化合物组成的无机粘合剂,由水泥材料组成的固化促进剂和润滑剂混合形成的粉末形式的粘合剂(粉末粘合剂)10加入到放射性废物中 通过干燥放射性废物并将其处理成粉末形式的粉末形式(干燥粉末状材料)11,并将混合物与高速立式叶片混合器1混合。随后,加入水12作为助剂, 作为通过与高速立式叶片混合器1混合获得的混合物的粉末混合物13通过造粒机2被压制成颗粒形式并固化以提供造粒材料14.版权所有(C) 2010年,JPO&INPIT
    • 10. 发明专利
    • Method of cleaning centrifugal thin film dryer
    • 清洁离心薄膜干燥机的方法
    • JP2009248015A
    • 2009-10-29
    • JP2008100285
    • 2008-04-08
    • Toshiba Corp株式会社東芝
    • SATO TATSUAKISHOJI YUICHIKANEKO MASAAKIMIKURA MICHITAKAAISAKA TAKASHIOKAMURA HAJIME
    • B01D1/22
    • PROBLEM TO BE SOLVED: To provide a method of cleaning a centrifugal thin film dryer capable of suppressing the vibration of the centrifugal thin film dryer without detracting cleaning effect of conventional cleaning methods even if the target of cleaning is an accreted matter which exhibits insolubility or difficulty to dissolve to cleaning water.
      SOLUTION: The method of cleaning the centrifugal thin film dryer 10 (refer to Fig.1) includes: a second process reducing a rotational rate of a main shaft 18 after stopping to supply a waste liquid to a heat transfer cylinder barrel 13; a third process maintaining the reduced rotational rate of the main shaft 18 for a predetermined time; and a forth process going on increasing the reduced rotational rate of the main shaft 18 so as to satisfy a rotational rate increasing condition using an index which represents a load to the main shaft 18 or a blade 17 as the rotational rate increasing condition. The rotational rate of the main shaft 18 goes on increasing without exceeding an vibrational acceleration of 10 m/sec
      2 allowed for the centrifugal thin film dryer 10 by the fourth process. Further, the cleaning effect by the conventional cleaning methods is maintained by the second and third processes.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够抑制离心式薄膜干燥机的振动的离心式薄膜干燥机的清洗方法,即使清洗对象物是表现出的物质,也不会降低常规清洗方法的清洗效果 不溶解或难溶于清水。 解决方案:清洁离心式薄膜干燥机10(参照图1)的方法包括:第二工序,其在停止向废液送至传热筒筒13之后降低主轴18的旋转速度 ; 维持主轴18的旋转速度降低预定时间的第三过程; 以及在增加主轴18的旋转速度降低的第四过程中,以使用表示对主轴18或叶片17的负载的指标作为转速提高条件来满足转速增加条件。 主轴18的旋转速度不增加,超过离心薄膜干燥机10允许的振动加速度为10m / sec 2 。 此外,通过第二和第三处理来维持通过常规清洁方法的清洁效果。 版权所有(C)2010,JPO&INPIT