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    • 6. 发明授权
    • Method for solidifying and stabilizing waste acid
    • 固化和稳定废酸的方法
    • US08430803B2
    • 2013-04-30
    • US11976341
    • 2007-10-24
    • Ching-Tsuen HuangChing-Tu Chang
    • Ching-Tsuen HuangChing-Tu Chang
    • B09B3/00C02F11/00C03B5/00C03B5/027A62D3/32A62D3/30A62D3/36
    • G21F9/16
    • The present invention discloses a method for solidifying and stabilizing waste acid including steps of condensing waste acid containing phosphoric acid to reduce the volume; mixing the condensed waste acid with waste acid containing fluoroboric acid to solidify and stabilize the mixed waste acid. The pH of the mixed acid is adjusted by adding barium hydroxide as a neutralizer. The efficiency of solidifying waste acid can be improved by partially granulating and by adding solidifying agent indirectly. The method of the present invention can prevent intensely exothermic reaction caused by adding solidifying agents. Furthermore, the method of the present invention is controlled in a temperature of 30 to 45° C. to improve the polymerization of the mixed waste acid so that the efficiency of solidification thereof can be also improved.
    • 本发明公开了一种固化和稳定废酸的方法,包括冷凝含有磷酸的废酸降低体积的步骤; 将浓缩的废酸与含有氟硼酸的废酸混合,使混合废酸固化并稳定。 通过加入氢氧化钡作为中和剂来调节混合酸的pH。 通过部分造粒和间接添加固化剂可以提高固化废酸的效率。 本发明的方法可以防止由加入凝固剂引起的强烈的放热反应。 此外,将本发明的方法控制在30至45℃的温度下,以改善混合废酸的聚合,从而也可提高其固化效率。
    • 7. 发明申请
    • METHOD FOR SOLIDIFYING AND STABILIZING WASTE ACID
    • 用于固化和稳定废酸的方法
    • US20120041249A1
    • 2012-02-16
    • US13277280
    • 2011-10-20
    • CHING-TSUEN HUANGCHING-TU CHANG
    • CHING-TSUEN HUANGCHING-TU CHANG
    • G21F9/16
    • G21F9/16
    • The present invention discloses a method for solidifying and stabilizing waste acid including steps of condensing waste acid containing phosphoric acid to reduce the volume; mixing the condensed waste acid with waste acid containing fluoroboric acid to solidify and stabilize the mixed waste acid. The pH of the mixed acid is adjusted by adding barium hydroxide as a neutralizer. The efficiency of solidifying waste acid can be improved by partially granulating and by adding solidifying agent indirectly. The method of the present invention can prevent intensely exothermic reaction caused by adding solidifying agents. Furthermore, the method of the present invention is controlled in a temperature of 30 to 45° C. to improve the polymerization of the mixed waste acid so that the efficiency of solidification thereof can be also improved.
    • 本发明公开了一种固化和稳定废酸的方法,包括冷凝含有磷酸的废酸降低体积的步骤; 将浓缩的废酸与含有氟硼酸的废酸混合,使混合废酸固化并稳定。 通过加入氢氧化钡作为中和剂来调节混合酸的pH。 通过部分造粒和间接加入固化剂可以提高固化废酸的效率。 本发明的方法可以防止由加入凝固剂引起的强烈的放热反应。 此外,将本发明的方法控制在30至45℃的温度下,以改善混合废酸的聚合,从而也可提高其固化效率。
    • 8. 发明申请
    • Method for solidifying and stabilizing waste acid
    • 固化和稳定废酸的方法
    • US20110218377A1
    • 2011-09-08
    • US11976341
    • 2007-10-24
    • Ching-Tsuen HuangChing-Tu Chang
    • Ching-Tsuen HuangChing-Tu Chang
    • G21F9/16
    • G21F9/16
    • The present invention discloses a method for solidifying and stabilizing waste acid including steps of condensing waste acid containing phosphoric acid to reduce the volume; mixing the condensed waste acid with waste acid containing fluoroboric acid to solidify and stabilize the mixed waste acid. The pH of the mixed acid is adjusted by adding barium hydroxide as a neutralizer. The efficiency of solidifying waste acid can be improved by partially granulating and by adding solidifying agent indirectly. The method of the present invention can prevent intensely exothermic reaction caused by adding solidifying agents. Furthermore, the method of the present invention is controlled in a temperature of 30 to 45° C. to improve the polymerization of the mixed waste acid so that the efficiency of solidification thereof can be also improved.
    • 本发明公开了一种固化和稳定废酸的方法,包括冷凝含有磷酸的废酸降低体积的步骤; 将浓缩的废酸与含有氟硼酸的废酸混合,使混合废酸固化并稳定。 通过加入氢氧化钡作为中和剂来调节混合酸的pH。 通过部分造粒和间接加入固化剂可以提高固化废酸的效率。 本发明的方法可以防止由加入凝固剂引起的强烈的放热反应。 此外,将本发明的方法控制在30至45℃的温度下,以改善混合废酸的聚合,从而也可提高其固化效率。
    • 9. 发明授权
    • Low-temperature solidification of radioactive and hazardous wastes
    • 放射性和危险废物的低温固化
    • US07855313B2
    • 2010-12-21
    • US11364643
    • 2006-02-28
    • Weiliang GongWerner LutzeIan L. Pegg
    • Weiliang GongWerner LutzeIan L. Pegg
    • G21F9/00
    • G21F9/304C04B28/006C04B28/008C04B28/08G21F9/16Y02P40/165Y02W30/91Y02W30/92Y02W30/94C04B18/0463C04B18/08C04B22/062C04B14/106C04B18/146
    • Treatment of a radioactive waste stream is provided by adding sodium hydroxide (NaOH) and/or potassium hydroxide (KOH) together with a rapidly dissolving form of silica, e.g., fumed silica or fly ash. Alternatively, the fumed silica can be first dissolved in a NaOH/KOH solution, which is then combined with the waste solution. Adding a binder that can be a mixture of metakaolin (Al2O3.2SiO2), ground blast furnace slag, fly ash, or other additives. Adding an “enhancer” that can be composed of a group of additives that are used to further enhance the immobilization of heavy metals and key radionuclides such as 99Tc and 129I. An additional step can involve simple mixing of the binder with the activator and enhancer, which can occur in the final waste form container, or in a mixing vessel prior to pumping into the final waste form container, depending on the particular application.
    • 通过将氢氧化钠(NaOH)和/或氢氧化钾(KOH)与快速溶解形式的二氧化硅(例如热解法二氧化硅或飞灰)一起加入来提供放射性废物流的处理。 或者,可以将热解法二氧化硅溶解在NaOH / KOH溶液中,然后将其与废溶液组合。 添加可以是偏高岭土(Al2O3.2SiO2),高炉渣,粉煤灰或其他添加剂的混合物的粘合剂。 添加可以由用于进一步增强重金属和关键放射性核素如99Tc和129I的固定化的一组添加剂组成的“增强剂”。 根据具体应用,另外的步骤可以包括将粘合剂与活化剂和增强剂简单混合,活化剂和增强剂可以在最终废物形式的容器中发生,或者在泵入最终废物形式的容器之前在混合容器中。