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1. 发明专利

JP2010132480A Method for recovering phosphoric acid freed of nitric acid and dissolved metal from phosphoric acid-based mixed acid waste liquid 有权
标题翻译：从基于磷酸的混合酸性废液中回收硝酸和溶解金属的磷酸的方法
公开(公告)号：JP2010132480A
公开(公告)日：2010-06-17
申请号：JP2008308301
申请日：2008-12-03
申请人： Sanwa Yuka Kogyo Kk , 三和油化工業株式会社
发明人： INOUE KOICHIRO , UCHINO KATSUTAKA
IPC分类号： C01B25/234 , B01D11/04 , C01B25/238 , C02F1/26 , C02F1/28
摘要： PROBLEM TO BE SOLVED: To provide a method for recovering phosphoric acid by which high-purity phosphoric acid can be separated and recovered by removing nitric acid and metals from a phosphoric acid-based mixed acid waste liquid. SOLUTION: The method for recovering phosphoric acid includes: a nitric acid extraction step wherein a mixed acid waste liquid containing nitric acid, phosphoric acid and metals is mixed with a first extractant solution containing a trialkyl phosphate to extract the nitric acid by selective dissolution in the first extractant solution; a metal extraction step wherein phosphoric acid-containing extraction residual liquid of an aqueous phase discharged from the nitric acid extraction step is mixed with a second extractant solution containing an acidic phosphoric ester to extract the metals by dissolution in the second extractant solution; and a step of recovering the phosphoric acid from phosphoric acid-containing extraction residual liquid of an aqueous phase discharged from the metal extraction step. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种回收磷酸的方法，通过从磷酸类混合酸性废液中除去硝酸和金属，可以分离和回收高纯度磷酸。解决方案：回收磷酸的方法包括：硝酸提取步骤，其中将含有硝酸，磷酸和金属的混合酸性废液与含有磷酸三烷基酯的第一提取剂溶液混合以通过选择性萃取硝酸溶解在第一提取剂溶液中; 金属提取步骤，其中从硝酸提取步骤排出的含有含磷酸的提取残留液体与含有酸性磷酸酯的第二萃取剂溶液混合，通过溶解在第二萃取剂溶液中提取金属; 以及从金属提取工序排出的含水相的萃取残留液中回收磷酸的工序。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JP4036426B2 Method of manufacturing filtration of excellent plaster 有权
公开(公告)号：JP4036426B2
公开(公告)日：2008-01-23
申请号：JP2001253274
申请日：2001-08-23
申请人：下関三井化学株式会社
发明人：尚和初治 , 登初田 , 庄三天野
IPC分类号： C01B25/231 , C01F11/46 , C01B25/238

3. 发明专利

JP2828496B2 失效
公开(公告)号：JP2828496B2
公开(公告)日：1998-11-25
申请号：JP24382290
申请日：1990-09-17
申请人： ORUGANO KK
发明人： YOSHIMURA KENJI , KANEKO KIKUZO , MATSUDA FUMIHIKO , HORIE MASAHARU , MASUDA TAKAYUKI
IPC分类号： B01D15/08 , B01J41/20 , C01B17/90 , C01B21/46 , C01B25/238 , C25D21/22 , C25F7/02 , B01J41/06

4. 发明专利

JPH0648712A PURIFICATION OF PHOSPHORIC ACID SOLUTION 失效
公开(公告)号：JPH0648712A
公开(公告)日：1994-02-22
申请号：JP20508792
申请日：1992-07-31
申请人： MITSUI TOATSU CHEMICALS
发明人： SHINOZAKI TAKEKI
IPC分类号： B01J20/20 , C01B25/238
摘要： PURPOSE:To remove arsenic in phosphoric acid liquid to 0.01ppm. CONSTITUTION:In the method for removing arsenic in the phosphoric acid liquid as a sulfide by reacting the arsenic in the phosphoric acid liquid with hydrogen sulfide gas, the hydrogen sulfide gas in a weight of 30-150 times that of the arsenic in the phosphoric acid liquid is preliminarily dispersed in the phosphoric acid liquid at 30-80 deg.C to react the arsenic with the hydrogen sulfide gas, followed by adsorption-removing the produced sulfide compound in an active carbon tower filled with coal active carbon.

5. 发明专利

JPH05213608A METHOD OF REMOVING CADMIUM FROM SOLUTION OF PHOSPHORIC ACID 失效
公开(公告)号：JPH05213608A
公开(公告)日：1993-08-24
申请号：JP11774292
申请日：1992-05-11
申请人： ENICHEM AGRICOLTURA SPA
发明人： GAETAANO KARITSUKIO , FUABIO BATSUSAN , NORUMA MEGUMI ITOU
IPC分类号： B01J47/04 , C01B25/234 , C01B25/238 , C01G11/00 , C22B7/00

6. 发明专利

JPH0468275B2 失效
公开(公告)号：JPH0468275B2
公开(公告)日：1992-10-30
申请号：JP4176787
申请日：1987-02-24
申请人： MATSUSHITA ELECTRIC WORKS LTD
发明人： OGAWA SATORU , YAMAGUCHI NOBORU , ISHIHARA MASAYUKI
IPC分类号： C01B25/238 , C04B41/91

7. 发明专利

JPH0214803A REMOVAL OF HEAVY METAL ION FROM PHOSPHORIC ACID 失效
公开(公告)号：JPH0214803A
公开(公告)日：1990-01-18
申请号：JP6232989
申请日：1989-03-16
申请人： I M I T A M I INST FOR RES & D
发明人： SHIYUMUERU DEII UKERESU , ERIAFU BENNYOSEFU , NAFUMU FUIRITSUPU FUINKERUSUTE
IPC分类号： C01B25/225 , C01B25/238 , C01G11/00 , C22B3/38
摘要： A process for the removal of heavy metal ions and particularly cadmium and copper from phosphoric acid of a concentration in the range of 20% to 52% by wt P2O5 is described. The process consists in a treatment of phosphoric acid with a reducing agent and a thio-organophosphene reagent, the heavy metal ions being retained on a solid adsorbent. According to one embodiment the process is carried out during the production of wet-process phosphoric acid, the calcium sulfate co-produced being the adsorbent. According to another embodiment,a solution of phosphoric acid, obtained by mixing a filter acid phosphoric acid with a more concentrated phosphoric acid solution, is treated according to the process, using an adsorbent selected from the group consisting of calcium sulfate, active carbon and aluminum silicates. The thio-organophosphene reagents are selected from tri-n-propylphosphene sulfide, diisobutyl dithiophosphene sulfide, tri-n-octylphosphene sulfide, dicyclohexyl phosphene sulfide, diisobutyl dithiophosphinate and dicylcohexyl dithiophosphinate.

8. 发明专利

JPS6351964B2 失效
公开(公告)号：JPS6351964B2
公开(公告)日：1988-10-17
申请号：JP673580
申请日：1980-01-23
申请人： STAMICARBON
发明人： KOONERISU ANTONIASU MARIA UETERINGUSU , YOHANESU ANNA YANSEN
IPC分类号： B01F17/00 , C01B25/234 , C01B25/237 , C01B25/238 , C01B25/46 , C01G43/00 , C22B60/02

9. 发明专利

JPS6248538B2 失效
公开(公告)号：JPS6248538B2
公开(公告)日：1987-10-14
申请号：JP10626982
申请日：1982-06-22
申请人： AMERIKAN PETORO MAATO INC
发明人： HARORUDO NERUSON HEDORITSUKU , SORON JIIN UITSUTONII
IPC分类号： C01B25/238 , B01D15/04 , B01J47/10 , B01J49/00

10. 发明专利

JPS6239236B2 失效
公开(公告)号：JPS6239236B2
公开(公告)日：1987-08-21
申请号：JP18032382
申请日：1982-10-13
申请人： KURISUTARU ENJINIARINGU KK , TOKUSHU ARUMAITO KOGYOSHO KK , MURAMATSU YUKIO , NAKAYAMA TAKAYASU
发明人： NAKAYAMA TAKAYASU , ISHIKAWA TAKESHI , YAMADA TOSHIICHI , AOYAMA YOSHIO
IPC分类号： C01B25/238 , C01F11/46 , C23F1/46 , C23F3/02 , C23F3/03

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