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    Process for preparing inorganic particulate adsorbent and process for treating nuclear reactor core-circulating water
    2.
    发明授权
    Process for preparing inorganic particulate adsorbent and process for treating nuclear reactor core-circulating water 失效
    制备无机颗粒吸附剂的方法和处理核反应堆核心循环水的方法

    公开(公告)号：US4282092A

    公开(公告)日：1981-08-04

    申请号：US80468

    申请日：1979-10-01

    申请人： Kazunori Fujita ,  Shigeo Uno ,  Seizi Takeuchi ,  Hisao Yamashita

    发明人： Kazunori Fujita ,  Shigeo Uno ,  Seizi Takeuchi ,  Hisao Yamashita

    IPC分类号： B01J20/08 ,  C02F1/28 ,  G21F9/00 ,  G21F9/12 ,  C02F1/42 ,  B01J21/04 ,  B01J21/06

    CPC分类号： G21F9/12 ,  C02F1/281 ,  C02F2101/006

    摘要： An inorganic particulate adsorbent of a titania-alumina system for treating a superheated water containing radioactive materials such as cobalt ions, which is free from release of corrosive impruities, and which has a high adsorption capacity of radioactive materials and a high mechanical strength is prepared by hydrolyzing a titanium alkoxide and an aluminum alkoxide, thereby forming a hydrous titanium oxide and a hydrous aluminum oxide, respectively; precalcining the hydrous titanium oxide and aluminum oxide, mixing and molding the resulting titania and alumina into a particulate mixture thereof having a titania mole fraction of 0.2-0.9, and calcining the particulate mixture at 500.degree.-700.degree. C. This absorbent is effectively used in treating boiling water-type nuclear reactor core-circulating water to remove radioactive substances therefrom.

    摘要翻译： 一种用于处理含有放射性物质如钴离子的过热水的二氧化钛 - 氧化铝体系的无机颗粒吸附剂，其不具有腐蚀性泄漏的释放，并且具有高放射性材料的吸附能力和高的机械强度。 水解钛醇盐和烷氧化铝，从而分别形成含水氧化钛和水合氧化铝; 对水合氧化钛和氧化铝进行预煅烧，将得到的二氧化钛和氧化铝混合成型为二氧化钛摩尔分数为0.2〜0.9的粒状混合物，并在500〜700℃下煅烧该混合物。 在处理沸水型核反应堆堆芯循环水中以从其中去除放射性物质。

    Process for reducing an eliminating nitrogen oxides in an exhaust gas
    6.
    发明授权
    Process for reducing an eliminating nitrogen oxides in an exhaust gas 失效
    减少排气中的氮氧化物的方法

    公开(公告)号：US4351811A

    公开(公告)日：1982-09-28

    申请号：US926111

    申请日：1978-07-19

    申请人： Shinpei Matsuda ,  Akira Kato ,  Shigeo Uno ,  Youichi Sakuta ,  Fumito Nakajima

    发明人： Shinpei Matsuda ,  Akira Kato ,  Shigeo Uno ,  Youichi Sakuta ,  Fumito Nakajima

    IPC分类号： B01D53/86 ,  B01D53/36

    CPC分类号： B01D53/8628

    摘要： The concentrations of NO and NO.sub.2 in nitrogen oxides contained in an exhaust gas are adjusted to substantially equal mol concentrations, whereupon the exhaust gas is held in contact with a metallic oxide catalyst together with ammonia. Owing to the adjustment of the NO and NO.sub.2 concentrations in the nitrogen oxides, the reaction rate is enhanced, and the nitrogen oxides are reduced even at a low temperature. The adjustment of the concentrations of NO and NO.sub.2 in the nitrogen oxides is done by the oxidation of NO with ozone, the catalytic oxidation of NO with air or oxygen, the addition of nitric acid, the addition of NO or NO.sub.2, etc.

    摘要翻译： 将排气中含有的氮氧化物中的NO和NO 2的浓度调整为基本相等的摩尔浓度，由此废气与氨一起保持与金属氧化物催化剂接触。 由于氮氧化物中NO和NO 2浓度的调节，反应速度提高，氮氧化物即使在低温也降低。 氮氧化物中NO和NO2浓度的调节是通过用臭氧氧化NO，NO与空气或氧气的反应氧化，硝酸的添加，NO或NO2的添加等进行的。