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21. 发明专利

JPS55136128A URANIUM SOLUTION CONCENTRATING METHOD 失效
公开(公告)号：JPS55136128A
公开(公告)日：1980-10-23
申请号：JP4453979
申请日：1979-04-12
申请人： MITSUBISHI CHEM IND
发明人： YOKOTA KENJI , KUSANO HIROSHI , MIYATA EIJI
IPC分类号： C22B60/02 , C01G43/00
摘要： PURPOSE:To prevent disturbance of uranium adsorption due to org. matter and facilitate treatment of a secondary conc. soln. by allowing uranium in sea water to be adsorbed on an adsorbent and contacting a soln. of org. matter-contg. uranium desorbed from the adsorbent to an acidic cation exchange resin to allow the uranium to be selectively adsorbed. CONSTITUTION:Uranium in a desorbing soln. used to desorb an adsorbent with uranium adsorbed from sea water is present as uranyl carbonate contaminated with org. matter. After removing carbonic acid radicals the soln. is contacted to an acidic cation exchange resin of weakly acidic type or the like. By this method a desorbing soln. contg. about several thousands ppm of uranium is obtd. The resin is slightly contaminated with the org. matter contained in the dil. uranium soln. to elongate its life. Since no org. matter is contained in the secondary conc. soln., treatment of the soln. is facilitated.

22. 发明专利

JPS5539255A ION EXCHANGE RESIN REGENERATING TOWER 失效
公开(公告)号：JPS5539255A
公开(公告)日：1980-03-19
申请号：JP11251578
申请日：1978-09-13
申请人： MITSUBISHI CHEM IND
发明人： YOKOTA KENJI , KUSANO HIROSHI , MIYATA EIJI , SUGAWARA TOYOKAZU
IPC分类号： C02F1/42 , B01J47/04 , B01J49/00
摘要： PURPOSE:To improve the rate of regeneration by providing water collecting and distributing pipes in the upper and lower part of the mixed ion exchange resin regenerating tower and providing two water collecting and distributing collectors in the specified positions of the separating interface of both ion exchange resins. CONSTITUTION:The mixed ion exchange resins in the regenerating tower are backwashed by upward flow and both anion and cation exchange resin layers 7, 8 and mixed layer 9 of both are formed by gravity sedimentation. Upper and lower water collecting and distributing collectors 4, 5 are provided in the mixed layer 9 in the range shown by the formula (l1, l2; the layer heights of anion and cation exchange resin layers, d1, d2; the distance between the upper collector 4 and lower collector 5 and the resin separating layer). An aqueous NaOH solution is introduced as a regenerating agent from the upper water collecting and distributing pipe 2 and is recovered to the upper collector 4. At the same time, desalted water is flowed to the collector 4 from the lower water collecting and distributing pipe 3 to prevent the regenerating agent from contacting the cation resins, whereby the regeneration of the resin layer 7 is accomplished. The regeneration of the resin layer 8 is accomplished by introducing an aqueous hydrochloric acid solution as a regenerating agent through the pipe 3, recovering the same in the lower collector 5 and passing the desalted water to the collector 5 from the pipe 2 simultaneously.

23. 发明专利

JPS5149562A PARUPUHAIEKI NO DATSUSHOKUHOHO 失效
公开(公告)号：JPS5149562A
公开(公告)日：1976-04-28
申请号：JP12317274
申请日：1974-10-25
申请人： NIPPON RENSUI KK , MITSUBISHI CHEM IND
发明人： MORI YASUYUKI , MATSUSHITA TAKESHI , FURUSHO SABURO , YOKOTA KENJI , KUSANO HIROSHI
IPC分类号： B01D15/00 , C02F1/42 , D21C11/00 , D21C11/04 , C02C5/02

24. 发明专利

JPS5111272A 失效
公开(公告)号：JPS5111272A
公开(公告)日：1976-01-29
申请号：JP8278074
申请日：1974-07-19
申请人： MITSUBISHI CHEM IND
发明人： YOKOTA KENJI , UCHIUMI KAZUO , MYAZAKI TOMOMI , ISHIHARA TOSHIO
IPC分类号： B01D37/02 , B01J20/26

25. 发明专利

JPH0512357B2 失效
公开(公告)号：JPH0512357B2
公开(公告)日：1993-02-17
申请号：JP2606183
申请日：1983-02-18
申请人： MITSUBISHI CHEM IND
发明人： YOKOTA KENJI , KUSANO HIROSHI , MYATA EIJI , SUGAWARA TOYOKAZU
IPC分类号： C12P19/34 , B01J41/04 , C07H1/08 , C07H19/10 , C07H19/20 , C12P19/32 , C12P19/36

26. 发明专利

JPS622572B2 失效
公开(公告)号：JPS622572B2
公开(公告)日：1987-01-20
申请号：JP3360179
申请日：1979-03-22
申请人： MITSUBISHI CHEM IND
发明人： YOKOTA KENJI , NAKAYAMA TOSHIO , KUSANO HIROSHI , MYATA EIJI , SUGAWARA TOYOKAZU
IPC分类号： C07C59/245 , C07C51/00 , C07C51/47 , C07C67/00

27. 发明专利

JPS5818160B2 失效
公开(公告)号：JPS5818160B2
公开(公告)日：1983-04-11
申请号：JP11245875
申请日：1975-09-17
申请人： MITSUBISHI CHEM IND
发明人： YOKOTA KENJI , KUSANO HIROSHI , NAKA MITSUGI
IPC分类号： C02F1/66 , B01J49/00 , C02F1/68

28. 发明专利

JPS57102238A METHOD FOR REGENERATION OF MIXED BED OF ION EXCHANGE RESINS 失效
公开(公告)号：JPS57102238A
公开(公告)日：1982-06-25
申请号：JP17847880
申请日：1980-12-17
申请人： MITSUBISHI CHEM IND
发明人： YOKOTA KENJI , YOSHIKAWA TOMOHIKO , KUSANO HIROSHI
IPC分类号： B01J49/00
摘要： PURPOSE:To regenerate ion exchange resins to such a mixed bed by which desalted water of extremely high purity is obtained by separating both resins, then putting a soln. having an intermediate specific gravity of both resins to the upper layer in regenerating the ion exchange resins of the mixted bed. CONSTITUTION:Upward flowing water is passed through a mixed bed of both ion exchange resins to stratify the same in such a way that the upper layer is an anion exchange resin and the lower part is a cation exchange resin, after which these are separated to the upper layer, the lower layer, and an intermediate layer. Thence, the lower layer is regenerated with an aq. acid soln. A soln. of an intermediate specific gravity of both resins is put into the upper layer where the floating anion exchange resin is regenerated by alkali, and the settled cation exchange resin is separated from there. Thereafter, both of the regenerated resins are mixed to make a mixed bed. The mixed bed regenerated in this way provides desalted water of extremely high purity.

29. 发明专利

JPS5235765A METHOD OF NEUTRALIZING ACIDIC AND ALKALINE AQUEOUS SOLUTIONS ALTERNATI VELY 失效
公开(公告)号：JPS5235765A
公开(公告)日：1977-03-18
申请号：JP11245875
申请日：1975-09-17
申请人： MITSUBISHI CHEM IND
发明人： YOKOTA KENJI , KUSANO HIROSHI , NAKA MITSUGI
IPC分类号： C02F1/66 , B01J49/00 , C02F1/68
摘要： PURPOSE:A method of neutralizing acidic and alkaline aqueous solutions altemativery by using a weak electrolytic ion exchange resin.

30. 发明专利

JPS5149563A RIGUNINGANJUHAISUI NO SHORIHOHO 失效
公开(公告)号：JPS5149563A
公开(公告)日：1976-04-28
申请号：JP12317374
申请日：1974-10-25
申请人： NIPPON RENSUI KK , MITSUBISHI CHEM IND
发明人： MORI YASUYUKI , MATSUSHITA TAKESHI , FURUSHO SABURO , YOKOTA KENJI
IPC分类号： B01D15/00 , B01J20/26 , B27K5/02 , C02F1/28 , C02F1/42 , D21C11/00

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