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    • 7. 发明专利
    • Solid sample melting apparatus and apparatus for measuring solid sample melting speed
    • 固体样品熔炼设备和测量固体样品熔融速度的装置
    • JP2005069949A
    • 2005-03-17
    • JP2003302166
    • 2003-08-26
    • National Institute Of Advanced Industrial & Technology独立行政法人産業技術総合研究所
    • MANAKA MITSUOTSUKIMURA KATSUHIROSUZUKI MASAYA
    • G01N1/28B01F1/00G21F9/34
    • PROBLEM TO BE SOLVED: To obtain a melting speed for melting a solid sample at a stable melting speed, while constantly maintaining an oxidation state or a reduction state, even if melting reaction advances.
      SOLUTION: A solid sample melting apparatus 20 introduces an oxidizing gas or a reducing gas from a gas cylinder 24 by bubbling, and sets solution stored in a storeroom 21, where external atmosphere is shut off, and solution accommodated in a buffer chamber 23, where external atmosphere is shut off, to a fixed oxidation state or reduction state. Then, a solution stored in the storeroom 21 is supplied to a sample chamber 22 by a solution supply recovery pump 22a, and the solution is circulated at a speed that is faster than the supply speed from the buffer chamber 23 to the sample chamber 22 by a solution circulation pump 22b. The temperature in the storage chamber 21, the sample chamber 22, and the buffer chamber 23 is controlled to be constant, and a solid sample accommodated in the sample chamber 22 is melted; and the concentration of a specified constituent contained in the recovered solution is measured by a solution concentration measuring section 12, thus obtaining the melting speed of the solid sample.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 待解决的问题:即使熔化反应进行,为了获得以稳定的熔融速度熔化固体样品的熔融速度,同时保持氧化状态或还原状态。 解决方案:固体样品熔化装置20通过鼓泡从气瓶24引入氧化气体或还原气体,并将存储在储存室21中的溶液存储在储存室21中,其中外部气氛被切断,溶液容纳在缓冲室 23,其中外部气氛被切断,处于固定的氧化状态或还原状态。 然后,通过溶液供给恢复泵22a将存储在储藏室21中的溶液供给到样品室22,并且溶液以比从缓冲室23到样品室22的供给速度快的速度循环,通过 溶液循环泵22b。 存储室21,样品室22和缓冲室23中的温度被控制为恒定,并且容纳在样品室22中的固体样品熔化; 通过溶液浓度测定部12测定回收溶液中含有的特定成分的浓度,得到固体样品的熔融速度。 版权所有(C)2005,JPO&NCIPI
    • 8. 发明专利
    • Fixing agent for radioactive iodine gas and fixing method thereof
    • 放射性碘气固定剂及其固定方法
    • JP2003302493A
    • 2003-10-24
    • JP2002109327
    • 2002-04-11
    • National Institute Of Advanced Industrial & Technology独立行政法人産業技術総合研究所
    • SUZUKI MASAYAFUJITA SATORUWATABE YOSHIOTSUKIMURA KATSUHIROSUZUKI KENJI
    • G21F9/02B01D53/68B01J20/10
    • PROBLEM TO BE SOLVED: To provide a radioactive iodine gas fixing agent capable of safely and efficiently treating a radioactive iodine gas generated in a nuclear power plant and the like and to provide a radioactive iodine gas fixing method for safely treating the radioactive iodine gas by a simple process without requiring collection of the radioactive iodine gas as a waste silver adsorption substance. SOLUTION: This radioactive iodine gas fixing agent is formed of a silicate mineral adsorbing and fixing radioactive iodine gas in its pores. In this radioactive iodine gas fixing method, a radioactive iodine gas discharged during radioactive waste processing is brought into contact with the silicate mineral at a high temperature so that the radioactive iodine gas is adsorbed and fixed inside the pores of the silicate mineral. As the silicate mineral, one or more kind of substance selected from among hydrosodalite, hydrogarnet, mayenite is used desirably. In this technically and economically useful method, the iodine gas can be directly absorbed and fixed in a low-solubility mineral without requiring any collection process collecting the iodine gas as a waste silver adsorption substance. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供能够安全有效地处理在核电站等中产生的放射性碘气的放射性碘气固定剂,并提供放射性碘气固定方法,用于安全处理放射性碘 气体,而不需要收集放射性碘气作为废银吸附物质。 解决方案:该放射性碘气固定剂由在其孔中吸附和固定放射性碘气的硅酸盐矿物形成。 在该放射性碘气固定方法中,放射性废物处理中排出的放射性碘气体在高温下与硅酸盐矿物接触,使得放射性碘气被吸附并固定在硅酸盐矿物的孔内。 作为硅酸盐矿物,希望使用选自水合铁矿,氢钙矿,钙铝石中的一种或多种物质。 在这种技术上和经济上有用的方法中,碘气可以直接吸收并固定在低溶解度矿物中,而不需要收集碘气作为废银吸附物质的任何收集过程。 版权所有(C)2004,JPO