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公开(公告)号：US11213799B2
公开(公告)日：2022-01-04
申请号：US16065386
申请日：2016-12-08
发明人： Takashi Sakuma , Makoto Komatsu , Takeshi Izumi , Shinsuke Miyabe , Yutaka Kinose , Kiyoshi Satou , Kenta Kozasu , Mari Tokutake , Takeshi Sakamoto , Kaori Sugihara
IPC分类号： B01J20/06 , G21F9/12 , B01J20/28 , C01F17/235 , B01J20/02 , B01J20/281 , C02F1/28
摘要： An adsorbent capable of adsorbing radioactive antimony, radioactive iodine and radioactive ruthenium, the adsorbent containing cerium(IV) hydroxide in a particle or granular form having a particle size of 250 μm or more and 1200 μm or less; and a treatment method of radioactive waste water containing radioactive antimony, radioactive iodine and radioactive ruthenium, the treatment method comprising passing the radioactive waste water containing radioactive antimony, radioactive iodine and radioactive ruthenium through an adsorption column packed with the adsorbent, to adsorb the radioactive antimony, radioactive iodine and radioactive ruthenium on the adsorbent, wherein the absorbent is packed to a height of 10 cm or more and 300 cm or less of the adsorption column, and wherein the radioactive waste water is passed through the adsorption column at a linear velocity (LV) of 1 m/h or more and 40 m/h or less and a space velocity (SV) of 200 h−1 or less.
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公开(公告)号：US11446631B2
公开(公告)日：2022-09-20
申请号：US16490304
申请日：2018-03-01
发明人： Takashi Sakuma , Makoto Komatsu , Takeshi Izumi , Takayasu Tanaka , Takafumi Tanaka , Hidenori Ishioka , Ayaka Ando , Tomoko Yoshimi , Nobuyuki Hashimoto , Hiroaki Uchida , Shigeru Nagaoka
摘要： Provided is a particulate alkaline earth metal ion adsorbent having a large adsorption capacity. The particulate alkaline earth metal ion adsorbent comprising: a potassium hydrogen dititanate hydrate represented by a chemical formula K2-xHxO·2TiO2·nH2O, wherein x is 0.5 or more and 1.3 or less, and n is greater than 0; and no binder, wherein the particulate alkaline earth metal ion adsorbent has a particle size range of 150 μm or more and 1000 μm or less.
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3.发明申请公开(公告)号：US20160289094A1
公开(公告)日：2016-10-06
申请号：US15084937
申请日：2016-03-30
申请人： Ebara Corporation
发明人： Takeshi Izumi , Tatsuya Deguchi , Makoto Komatsu
CPC分类号： C02F1/42 , B01J39/05 , B01J41/05 , B01J47/04 , C02F1/705 , C02F2001/427 , C02F2101/006 , C02F2101/10 , C02F2103/023 , C02F2103/18 , C02F2303/08 , G21D1/02 , G21F9/12 , Y02E30/40
摘要： A condensate demineralization method for a condensate treatment of a nuclear power generation plant, including: passing condensate at a linear flow rate ranging from 20 m/h to 200 m/h through a condensate demineralization apparatus comprising an ion exchange resin layer filled therein wherein the ion exchange resin layer includes a mixed bed of a strongly acidic cation resin and a strongly basic anion resin and a metal doped resin in a volume ratio ranging from 2% to 50% relative to the mixed bed.
摘要翻译： 一种用于核发电厂的冷凝水处理的冷凝物脱矿质方法，包括：通过包含填充在其中的离子交换树脂层的冷凝物脱矿装置，以20m / h至200m / h的线性流速通过冷凝物，其中 离子交换树脂层包括强酸性阳离子树脂和强碱性阴离子树脂和金属掺杂树脂的混合床，其体积比相对于混合床为2％至50％。
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公开(公告)号：US11471855B2
公开(公告)日：2022-10-18
申请号：US16239177
申请日：2019-01-03
发明人： Yoju Shimizu , Hajime Funakoshi , Keisuke Tokunaga , Shigeru Hirano , Takashi Sakuma , Makoto Komatsu , Takeshi Izumi
IPC分类号： B01J20/10 , C01B33/20 , G21F9/12 , B01J20/02 , B01J20/28 , C02F1/28 , B01J20/30 , C02F101/10 , C02F103/06 , C02F103/08
摘要： The present invention provides a composition that includes a silicotitanate that has a sitinakite structure, the composition having higher cesium adsorptivity than conventional compositions. The present invention also provides a production method for the composition that includes a silicotitanate that has a sitinakite structure. The production method does not require the use of hazardous or deleterious materials, can generate a product using a compound that is easily acquired, and can use a general-purpose autoclave. Also provided is a silicotitanate composition that has higher strontium adsorptivity than the present invention. Provided is a silicotitanate composition that contains niobium and a silicotitanate that has a sitinakite structure, the composition having at least two or more diffraction peaks selected from the group consisting of 2θ=8.8°±0.5°, 2θ=10.0°±0.5°, and 2θ=29.6°±0.5°.
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公开(公告)号：US11110430B2
公开(公告)日：2021-09-07
申请号：US16079177
申请日：2017-02-23
IPC分类号： B01D53/02 , B01J20/18 , C01B39/22 , G21F9/02 , G21F9/12 , C01B39/18 , B01J20/28 , B01J20/30 , B01D53/04 , C01B39/14
摘要： The present invention provides a treatment method of a radioactive iodine-containing fluid, comprising passing the radioactive iodine-containing fluid through an adsorbent for iodine consisting of a silver-containing binderless zeolite molded body having a silver content of 50 mass % or less, to adsorb the radioactive iodine on the adsorbent for iodine.
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6.发明申请公开(公告)号：US20180071712A1
公开(公告)日：2018-03-15
申请号：US15560348
申请日：2016-03-22
CPC分类号： B01J20/06 , B01J20/28011 , B01J20/2803 , B01J20/28057 , C01B33/113 , C01F7/02 , C01G45/02 , C01G55/00 , C02F1/28 , C02F1/281 , C02F2101/006 , C02F2101/20 , C22B11/00 , G01N23/20075
摘要： An adsorbent is provided to adsorb ruthenium from aqueous solution for recovery and/or reuse or removal of said ruthenium, and a method for purifying, for example, sea water and/or water containing sodium ions, magnesium ions, calcium ions, chlorine ions or other ions, polluted with a radioactive element, using said adsorbent.The ruthenium adsorbent includes manganese in the form of oxides thereof. The adsorbent can further include at least one additional transition metal element other than manganese, such as copper. The adsorbent soaked in water removes radioactive ruthenium or the like through adsorption, and thereby can purify, for example, sea water and/or water containing sodium ions, magnesium ions, calcium ions, chlorine ions or other ions.
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公开(公告)号：US10449510B2
公开(公告)日：2019-10-22
申请号：US15560348
申请日：2016-03-22
IPC分类号： B01J20/06 , C02F1/28 , C22B11/00 , C01G45/02 , B01J20/28 , C01B33/113 , C01F7/02 , C01G55/00 , C02F101/00 , C02F101/20 , G01N23/20
摘要： An adsorbent is provided to adsorb ruthenium from aqueous solution for recovery and/or reuse or removal of said ruthenium, and a method for purifying, for example, sea water and/or water containing sodium ions, magnesium ions, calcium ions, chlorine ions or other ions, polluted with a radioactive element, using said adsorbent.The ruthenium adsorbent includes manganese in the form of oxides thereof. The adsorbent can further include at least one additional transition metal element other than manganese, such as copper. The adsorbent soaked in water removes radioactive ruthenium or the like through adsorption, and thereby can purify, for example, sea water and/or water containing sodium ions, magnesium ions, calcium ions, chlorine ions or other ions.
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公开(公告)号：US10388419B2
公开(公告)日：2019-08-20
申请号：US15575504
申请日：2016-06-03
发明人： Takashi Sakuma , Makoto Komatsu , Takeshi Izumi , Tomohiko Ito , Toru Shibuya
IPC分类号： G21F9/16 , B01J20/06 , B01J20/28 , G21F9/12 , B01D15/36 , B01J29/08 , B01J29/18 , B01J29/70 , C08L27/12 , C02F101/00 , C02F101/20
摘要： Provided are an adsorbent capable of removing radioactive water liquid including iodine compounds and/or antimony by means of a water passing treatment, and a method and an apparatus for treating radioactive waste liquid by using the adsorbent. The adsorbent includes a polymer resin and 10 parts by weight or more of a hydrous hydroxide of a rare earth element based on 100 parts by weight of the polymer resin, in which the hydrous hydroxide of the rare earth element has a water content of 1 part by weight to 30 parts by weight based on 100 parts by weight of a dry product thereof, and adsorbs iodine compounds and/or antimony.
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公开(公告)号：US09999880B2
公开(公告)日：2018-06-19
申请号：US14520635
申请日：2014-10-22
申请人： EBARA CORPORATION
发明人： Takeshi Izumi , Makoto Komatsu
IPC分类号： G21F9/12 , B01J47/028 , B01J47/04 , C02F1/42 , C02F1/70 , G21C19/307 , B01J47/026 , B01J41/05 , C02F101/00 , C02F101/10 , C02F103/02 , C02F103/04
CPC分类号： B01J47/028 , B01J41/05 , B01J47/026 , B01J47/04 , C02F1/42 , C02F1/705 , C02F2001/422 , C02F2001/425 , C02F2001/427 , C02F2101/006 , C02F2101/10 , C02F2103/023 , C02F2103/04 , G21C19/307 , G21F9/12
摘要： A method for purifying water in a spent fuel pool in a nuclear power plant, the method including passing the water at a linear flow velocity of 50 m/h or less through a purification apparatus. The apparatus includes an ion exchange resin layer and a metal-doped resin layer laid at a bed height of 2 cm or more on a surface layer of the ion exchange resin layer. The method includes contacting the water with the metal-doped resin layer to decompose a pro-oxidant contained in the water and subsequently contacting the water with the ion exchange resin to produce purified water.
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