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110 条记录 (耗时 0.016 秒)

    Precipitation apparatus and method
    7.
    发明授权
    Precipitation apparatus and method 失效
    降水装置及方法

    公开(公告)号：US5855776A

    公开(公告)日：1999-01-05

    申请号：US484901

    申请日：1995-06-07

    申请人： Michael Joseph Bowe ,  John William Stairmand

    发明人： Michael Joseph Bowe ,  John William Stairmand

    IPC分类号： B01D21/01 ,  B01D21/28 ,  B01J19/00 ,  G21F9/10 ,  B01D21/00

    CPC分类号： G21F9/10

    摘要： Apparatus for the on-line treatment of chemical reagents, including a flow line for a reagent flow, a vortex mixer in the flow line for combining and mixing the reagent flow with at least one further reagent flow, a pulser in the flow line for causing the pulsing of the mixed flow from the vortex mixer, and a vessel having an array of vortex cells for receiving the pulsing mixed flow to cause development and growth of precipitate under narrow residence time distribution conditions. Flow lines mix a flow of reagents to initiate precipitation. The pulser pulses the admixed reagents and causes the pulsing mixed flow to swirl with a constantly reversing rotational flow to achieve development and growth of precipitate.

    摘要翻译： 用于在线处理化学试剂的装置，包括用于试剂流的流动线，用于将试剂流与至少一种其它试剂流结合并混合的流动管道中的涡流混合器，流动管线中的脉冲发生器，用于引起 来自涡旋混合器的混合流的脉冲，以及具有用于接收脉冲混合流的涡旋细胞阵列的容器，以在狭窄的停留时间分布条件下引起沉淀的发育和生长。 流动线混合试剂流以引发沉淀。 脉冲发生器脉冲混合的试剂并使脉冲混合流以恒定反转的旋转流量旋转以实现沉淀物的显影和生长。

    Method of separating exothermic elements from high-level radioactive liquid waste
    8.
    发明授权
    Method of separating exothermic elements from high-level radioactive liquid waste 失效
    将放热元素与高放射性废物废物分离的方法

    公开(公告)号：US5574960A

    公开(公告)日：1996-11-12

    申请号：US520784

    申请日：1995-08-30

    申请人： Shigeaki Yonezawa

    发明人： Shigeaki Yonezawa

    IPC分类号： G21F9/06 ,  C22B26/00 ,  G21C19/46 ,  G21F9/10

    CPC分类号： G21C19/46 ,  C22B26/00 ,  Y02W30/883

    摘要： A method of separating exothermic elements of Cs and Sr from a high-level radioactive liquid waste. The method comprises a denitration step wherein formic acid is added to the high-level liquid waste so as to adjust its pH to about 5, thereby causing most of the elements other than Cs and Sr to precipitate in the high-level liquid waste to obtain a denitrated liquid waste containing Cs and Sr in high concentrations. The denitrated liquid waste is then subjected to a pH adjustment step wherein ammonia is added to the denitrated liquid waste so as to adjust its pH to about 7.5 to 9, thereby removing by precipitation the elements other than Cs and Sr remaining in the denitrated liquid waste. When the thus resulting precipitate freed of Cs and Sr is vitrified, the waste content in the vitrified waste can be increased.

    摘要翻译： 从高放射性废液中分离出Cs和Sr的放热元素的方法。 该方法包括脱硝步骤，其中向高级液体废物中加入甲酸以将其pH调节至约5，从而使除Cs和Sr以外的大部分元素沉淀在高级废液中以获得 含有高浓度Cs和Sr的脱硝废液。 然后对脱硝液体废物进行pH调节步骤，其中将氨加入脱硝液体废物中，以将其pH调节至约7.5至9，从而通过沉淀去除残留在脱硝废液中的Cs和Sr以外的元素 。 当由此得到的Cs和Sr释放的沉淀物被玻璃化时，可以增加玻璃化废物中的废物含量。

    Liquid treatment process
    9.
    发明授权
    Liquid treatment process 失效
    液体处理工艺

    公开(公告)号：US4879006A

    公开(公告)日：1989-11-07

    申请号：US228510

    申请日：1988-08-05

    申请人： Andrew D. Turner

    发明人： Andrew D. Turner

    IPC分类号： G21F9/10 ,  C02F1/467 ,  C02F1/62 ,  G21F9/04 ,  G21F9/06

    CPC分类号： C02F1/467 ,  G21F9/04 ,  C02F1/4691 ,  C02F2101/006 ,  C02F2101/20

    摘要： Ruthenium in aqueous solution in a first, oxidizable oxidation state (e.g. as RuNO(NO.sub.3).sub.3) is converted to an insoluble form in a second, different oxidation state (e.g. as RuO.sub.2.nH.sub.2 O) by establishing an electrochemical cell wherein the solution is the electrolyte and electrochemically oxidizing and reducing the ruthenium in the cell. The insoluble form may be filtered from the liquid. The ruthenium treatment may be a stage in the removal of radioactive species from liquids such is in the treatment of medium and low level activity liquid waste streams, wherein actinides are precipitated and filtered off either before or after ruthenium treatment. Subsequently, residual activity may be removed from the stream by either or both of (a) absorption, followed by filtration and electro-osmotic dewatering and (b) electrochemical ion exchange. Filtration fluxes may be maintained by direct electrochemical membrane cleaning.

    Process for treating uraniferous solutions by the addition of an aluminum salt
    10.
    发明授权
    Process for treating uraniferous solutions by the addition of an aluminum salt 失效
    通过加入铝盐处理尿素溶液的方法

    公开(公告)号：US4755328A

    公开(公告)日：1988-07-05

    申请号：US717869

    申请日：1985-03-29

    申请人： Albert Mouton ,  Georges Lyaudet

    发明人： Albert Mouton ,  Georges Lyaudet

    IPC分类号： C22B60/00 ,  C22B60/02 ,  G21F9/10 ,  G21F9/08 ,  C01G56/00 ,  C02F1/42

    CPC分类号： C22B60/0278 ,  C22B60/00 ,  G21F9/10

    摘要： The invention relates to a process for decontaminating and adjusting the pH of uraniferous solutions to render them compatible with the natural environment into which they may be discharged. This process is characterized in that the solutions to be treated having a natural pH from about 2.5 to about 6.5 and containing from about 1 to about 100 mg/l of uranium, are supplemented with an aluminum salt, such as sodium aluminate, in a sufficient amount for the final pH to be from about 5.5 to about 8.5 and for there to be precipitation, coagulation and adsorption of about 90% of the uranium initially contained in the solution and for the uranium content remaining in the final solution obtained to be equal to or less than about 1.8 mg/l.

    摘要翻译： 本发明涉及一种净化和调节尿素溶液的pH以使其与其可以排出的自然环境相适应的方法。 该方法的特征在于，待处理的溶液具有约2.5至约6.5的天然pH并且含有约1至约100mg / l的铀，其中补充有铝盐，例如铝酸钠，足够的 最终pH为约5.5至约8.5的量，并且存在沉淀，凝结和吸附溶液中最初含有的约90％的铀，以及残留在最终溶液中的铀含量等于 或小于约1.8mg / l。