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1. 发明授权

US3001854A Method for purifying titanium sulfate solutions 失效
标题翻译：硫酸钛溶液的净化方法
公开(公告)号：US3001854A
公开(公告)日：1961-09-26
申请号：US81364359
申请日：1959-05-18
申请人： GLIDDEN CO
发明人： KENWORTHY LESTER A
IPC分类号： C01B17/90 , C01G23/00
CPC分类号： C01B17/904 , C01G23/001 , Y10S423/01 , Y10S423/02

2. 发明授权

US3025135A Low acid purified titanium solution and products therefrom 失效
标题翻译：低酸纯钛溶液及其制品
公开(公告)号：US3025135A
公开(公告)日：1962-03-13
申请号：US81956359
申请日：1959-06-11
申请人： GLIDDEN CO
发明人： KENWORTHY LESTER A
IPC分类号： C01B17/90
CPC分类号： C01B17/904

3. 发明申请

US20080229882A1 Process for Purifying Sulphuric Acids 审中-公开
标题翻译：纯化硫酸的方法
公开(公告)号：US20080229882A1
公开(公告)日：2008-09-25
申请号：US10570455
申请日：2004-08-23
申请人： Olaf Halle , Wolfgang Podszun , Bruno Hees , Rheinhold Klipper , Jean-Marc Vesselle
发明人： Olaf Halle , Wolfgang Podszun , Bruno Hees , Rheinhold Klipper , Jean-Marc Vesselle
IPC分类号： C25C1/12 , C22B9/00
CPC分类号： C01B17/904 , B01J45/00 , C01B17/907 , C01B17/908 , C25C1/12
摘要： The present invention relates to a process for purifying sulphuric acids, in particular metal-containing sulphuric acids, characterized in that monodisperse ion exchangers having chelating functional groups are used.
摘要翻译：本发明涉及一种纯化硫酸，特别是含金属硫酸的方法，其特征在于使用具有螯合官能团的单分散离子交换剂。

4. 发明授权

US4559216A Method for purification of sulfuric acid solution 失效
标题翻译：硫酸溶液的纯化方法
公开(公告)号：US4559216A
公开(公告)日：1985-12-17
申请号：US586488
申请日：1984-03-05
申请人： Tadao Nagai , Yoshiaki Echigo
发明人： Tadao Nagai , Yoshiaki Echigo
IPC分类号： B01D15/00 , B01J45/00 , C01B17/90 , C02F1/28 , G05D3/12
CPC分类号： B01D15/00 , B01J45/00 , C01B17/901 , C01B17/904 , C01B17/908 , C02F1/285 , G05D3/12 , Y10S204/13
摘要： A method for purification of a sulfuric acid solution such as, for example, a copper electrolyte which entrains at least one metal ion species selected from the group consisting of antimony ions, bismuth ions, and iron ions and having a sulfuric acid concentration of at least 50 g/liter is disclosed. The method comprises exposing the sulfuric acid solution to a chelating resin possessing aminomethylenephosphonic acid group as a chelate forming group thereby effecting adsorptive separation of the aforementioned at least one metal ion species from the solution. By the method described above, the antimony ions, bismuth ions, and/or iron ions contained as impurities in the copper electrolyte can be easily and efficiently separated out of the system without entailing any ecological problem.
摘要翻译：一种硫酸溶液的纯化方法，例如铜电解质，其夹带至少一种选自锑离子，铋离子和铁离子的金属离子种类，其硫酸浓度至少为公开了50克/升。该方法包括将硫酸溶液暴露于具有氨基亚甲基膦酸基团的螯合树脂作为螯合形成基团，从而进行上述至少一种金属离子物质与溶液的吸附分离。通过上述方法，铜电解液中作为杂质含有的锑离子，铋离子和/或铁离子可以容易且有效地从体系中分离出来，而不会引起生态问题。

5. 发明授权

US3689217A Process for freeing 55-85% sulphuric acid from its impurities due to metals and/or semi-metals 失效
标题翻译：从金属和/或半金属的劣质中释放55-85％的硫酸的方法
公开(公告)号：US3689217A
公开(公告)日：1972-09-05
申请号：US3689217D
申请日：1970-06-15
申请人： INVENTA AG
发明人： CAPAUL MARCEL , SAUTER HERMANN
IPC分类号： B01J41/04 , C01B17/90
CPC分类号： B01J41/04 , C01B17/904
摘要： PROCESS FOR REMOVING METAL IMPURITITEDSUCH AS IRON FORM 55-85% BY WEIGHT SULPHURIC ACID. THE SULPHURIC ACID IS TREATED WITH A MOLAR EXCESS OF A HALIDE TO FORM A COMPLEX WITH THE IMPURITY. THE ACID IS THEN PASSED THROUGH AN ANION EXCHANGER TO PURIFY AND REMOVE THE IMPURITIES FROM THE ACID.

6. 发明授权

US5792441A Fixed-resin bed technologies for the treatment of the chlorine dioxide generator effluent and feeds stream 失效
标题翻译：固定树脂床技术用于处理二氧化氯发生器流出物和进料流
公开(公告)号：US5792441A
公开(公告)日：1998-08-11
申请号：US729148
申请日：1996-10-11
申请人： Michael Paleologou , Rokhsareh Thompson , Craig J. Brown , Michael Sheedy
发明人： Michael Paleologou , Rokhsareh Thompson , Craig J. Brown , Michael Sheedy
IPC分类号： B09B3/00 , B01J39/04 , C01B11/02 , C01B17/90 , C01D5/16 , C02F1/44 , D21C9/14 , C01D5/00
CPC分类号： C01B17/904 , C01B11/023 , C01D5/16 , Y10S423/14
摘要： A process employing a fixed-resin bed Acid Retardation Unit (ARU) to separate spent acid from chlorine dioxide generators into a de-acidified sodium sulfate component and a purified sulfuric acid component. The de-acidified sodium sulfate produced is returned to the chemical recovery cycle of the kraft mill in place of acidic chlorine dioxide generator effluent thereby avoiding the destruction of alkalinity in pulp mill liquors. In addition, sulfuric acid is purified providing an opportunity for reuse in various mill applications, and/or concentrated and recycled to the generator. Alternatively, to avoid high evaporation costs, the purified acid can be used to regenerate a cation-exchange unit (CEU) used in the conversion of sodium chlorate to a sodium chlorate/chloric acid mixture which is fed to the generator in place of sodium chlorate and sulfuric acid. Using this approach, the sulfuric acid requirement of chlorine dioxide generators and, in turn, the amount of acidic generator effluent can be reduced. The process is applicable to both atmospheric and subatmospheric chlorine dioxide generators. In the latter case, the concentration of the purified sulfuric acid from the ARU or any other acid separation system can be increased by using a portion of it to dissolve the sodium sesquisulfate by-product from such generators.
摘要翻译：一种使用固定树脂床酸延迟单元（ARU）将废酸从二氧化氯发生器分离成脱酸的硫酸钠组分和纯化的硫酸组分的方法。所产生的脱酸硫酸钠返回到牛皮纸磨机的化学回收循环，代替酸性二氧化氯发生器流出物，从而避免纸浆厂液中碱度的破坏。此外，纯化硫酸提供了在各种研磨应用中再利用的机会，和/或浓缩并再循环到发生器中。或者，为了避免高的蒸发成本，可以使用纯化的酸来再生用于将氯酸钠转化成氯酸钠/氯酸混合物的阳离子交换单元（CEU），该氯酸钠/氯酸混合物被供给到发生器代替氯酸钠和硫酸。使用这种方法，可以减少二氧化氯发生器的硫酸需求，进而降低酸性发生器流出物的量。该方法适用于大气和低气压的二氧化氯发生器。在后一种情况下，来自ARU或任何其它酸分离系统的纯化硫酸的浓度可以通过使用其一部分来从这种发生器中溶解倍半硫酸钠副产物而增加。

7. 发明授权

US5603839A Process for the recovery of waste sulphuric acid 失效
标题翻译：废硫酸回收工艺
公开(公告)号：US5603839A
公开(公告)日：1997-02-18
申请号：US529771
申请日：1995-09-18
申请人： Gordon M. Cameron
发明人： Gordon M. Cameron
IPC分类号： C01B17/90 , C01G49/14 , C02F1/42
CPC分类号： C01G49/14 , C01B17/904
摘要： A process for concentrating a waste sulphuric acid stream containing metal sulphates including iron sulphate comprises the steps of subjecting the stream to an ion exchange operation to produce an acid-rich stream and a salt-rich stream and, concentrating the acid-rich stream to produce a concentrated sulphuric acid stream.
摘要翻译：用于浓缩包含硫酸铁（包括硫酸铁）的废硫酸流的方法包括以下步骤：使该物流进行离子交换操作以产生富酸流和富含盐的物流，并浓缩富酸流以产生浓硫酸流。

8. 发明授权

US3306702A Removal of metal salt contaminants from acidic aqueous liquids 失效
标题翻译：从酸性含水液体中去除金属盐污染物
公开(公告)号：US3306702A
公开(公告)日：1967-02-28
申请号：US20299162
申请日：1962-06-18
申请人： NALCO CHEMICAL CO
发明人： KARSTEN ODLAND , ROBERTSON REED S
IPC分类号： B01D15/04 , B01J41/04 , C01B17/90 , C01B25/238
CPC分类号： C01B17/904 , B01J41/05 , C01B25/238 , Y10S423/01 , Y10S423/02

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