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1. 发明申请

WO2014118572A1 REGENERATION OF AN ION EXCHANGE COLUMN 审中-公开
标题翻译：离子交换柱的再生
公开(公告)号：WO2014118572A1
公开(公告)日：2014-08-07
申请号：PCT/GB2014/050292
申请日：2014-02-03
申请人： IONEX SG LIMITED
发明人： WAITE, Michael
IPC分类号： B01J41/04 , B01J49/00 , C02F1/42 , C02F101/22 , C02F101/16
CPC分类号： B01J49/57 , B01J41/05 , B01J49/07 , B01J49/60 , C02F1/42 , C02F1/461 , C02F2001/422 , C02F2101/163 , C02F2101/22 , C02F2303/16
摘要： The present invention relates to a method of regenerating an ion exchange material loaded with chromate ions and nitrate ions in an ion exchange column, the method comprising subjecting the loaded ion exchange column to a regeneration sequence comprising the following steps: (i) passing a first salt solution through the column forming a first effluent solution; (ii) passing a second salt solution through the column to at least partially remove the chromate ions from the column forming a second effluent solution, wherein the. second salt solution has a higher salt concentration than the first salt solution; (iii) passing a third salt solution through the column to at least partially remove nitrate ions from the column forming a third effluent solution, wherein the third salt solution has a salt concentration higher than the second salt solution.
摘要翻译：本发明涉及一种在离子交换柱中再生负载有铬酸根离子和硝酸根离子的离子交换材料的方法，该方法包括将加载的离子交换柱经受包括以下步骤的再生序列：（i）盐溶液通过柱形成第一流出液; （ii）使第二盐溶液通过所述塔以至少部分地从形成第二流出物溶液的塔中除去铬酸根离子，其中。第二盐溶液的盐浓度高于第一盐溶液; （iii）使第三盐溶液通过所述塔至少部分地从形成第三流出物溶液的塔中除去硝酸根离子，其中第三盐溶液的盐浓度高于第二盐溶液。

2. 发明申请

WO2018127679A1 METHOD FOR REGENERATING ION EXCHANGE MATERIAL 审中-公开
公开(公告)号：WO2018127679A1
公开(公告)日：2018-07-12
申请号：PCT/GB2017/053740
申请日：2017-12-14
申请人： IONEX SG LIMITED
发明人： WAITE, Michael
IPC分类号： B01J41/05 , B01J49/07 , B01J49/57 , C02F1/42
CPC分类号： B01J41/05 , B01J49/07 , B01J49/57 , C02F1/42 , C02F2001/422 , C02F2101/22 , C02F2303/16
摘要： A method of regenerating an ion exchange material for an ion exchange column, the method comprising the steps of: a] preparing a regenerant which comprises a salt solution; b] modifying the regenerant by increasing the pH and/or increasing the oxidation potential thereof to promote conversion of trivalent chromium hydroxide to soluble hexavalent chromium ions; and c] passing the regenerant through the ion exchange bed (102) to convert trivalent chromium hydroxide to hexavalent chromium ions and remove the hexavalent chromium ions from the ion exchange material.

3. 发明申请

WO2016012815A1 METHOD OF REMOVING CHROMATE IONS FROM AN ION-EXCHANGE EFFLUENT 审中-公开
标题翻译：从离子交换器中除去铬酸根离子的方法
公开(公告)号：WO2016012815A1
公开(公告)日：2016-01-28
申请号：PCT/GB2015/052160
申请日：2015-07-24
申请人： IONEX SG LIMITED
发明人： WAITE, Michael
IPC分类号： C02F1/52 , B01J41/04 , B01J49/00 , C02F1/42
CPC分类号： C02F1/5236 , B01J41/05 , B01J49/07 , B01J49/57 , C02F1/42 , C02F2001/425
摘要： The present invention relates to a method of removing chromate ions from an ion- exchange effluent, the method comprising: (i) providing an ion-exchange effluent comprising chromate ions obtained from the regeneration of an ion-exchange material, (ii) admixing the ion-exchange effluent with a source of alkali metal dithionite to form a first precipitate, and (iii) removing the first precipitate
摘要翻译：本发明涉及一种从离子交换流出物中除去铬酸根离子的方法，该方法包括：（i）提供包含从离子交换材料的再生获得的铬酸根离子的离子交换流出物，（ii）将离子交换流出物与碱金属连二亚硫酸盐源形成第一沉淀物，和（iii）除去第一沉淀物

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