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公开(公告)号：EP3892362A1
公开(公告)日：2021-10-13
申请号：EP21177167.0
申请日：2015-04-02
IPC分类号： B01D61/24 , B01D61/42 , B01D61/46 , C02F1/469 , C25B1/04 , C02F1/44 , B01D53/32 , B01D53/14 , B01D61/54 , C02F1/461 , C02F103/18 , C02F103/08
摘要： A method and system for for reducing ion concentration of a solution and converting gas. The system comprising a multi-chamber unitary dialysis cell comprising a gas chamber, a product chamber, and an acid chamber. Ion exchange barriers separate the chambers of the dialysis cell. A first anion exchange barrier is positioned between the product chamber and the acid chamber and a first cation exchange barrier is positioned between the product chamber and the gas chamber. Anions from the solution being treated associate with cations from the acid chamber to form an acid solution in the acid chamber, and cations from the solution being treated associate with anions from the fluid comprising gas to form salt, thereby reducing the ion concentration of the solution being treated and converting at least a portion of the gas into salt.
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公开(公告)号：EP4227440A1
公开(公告)日：2023-08-16
申请号：EP23167858.2
申请日：2019-12-19
发明人： DARA, Saad , ZAHIRI, Beniamin
IPC分类号： C25B1/16 , B01D61/00 , C01D15/00 , C01D15/02 , C01D15/06 , C01D15/08 , C25B9/21 , C25B9/23 , C25B11/032 , C25B11/052 , B01D61/46 , C01D15/04 , B01D61/44 , C02F1/469 , C02F1/461
摘要： In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.
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公开(公告)号：EP4227439A1
公开(公告)日：2023-08-16
申请号：EP23167855.8
申请日：2019-12-19
发明人： DARA, Saad , ZAHIRI, Beniamin
IPC分类号： C25B1/16 , B01D61/00 , C01D15/00 , C01D15/02 , C01D15/06 , C01D15/08 , C25B9/21 , C25B9/23 , C25B11/032 , C25B11/052 , B01D61/46 , C01D15/04 , B01D61/44 , C02F1/469 , C02F1/461
摘要： In this disclosure, a process of recycling acid, base and the salt reagents required in the Li recovery process is introduced. A membrane electrolysis cell which incorporates an oxygen depolarized cathode is implemented to generate the required chemicals onsite. The system can utilize a portion of the salar brine or other lithium-containing brine or solid waste to generate hydrochloric or sulfuric acid, sodium hydroxide and carbonate salts. Simultaneous generation of acid and base allows for taking advantage of both chemicals during the conventional Li recovery from brines and mineral rocks. The desalinated water can also be used for the washing steps on the recovery process or returned into the evaporation ponds. The method also can be used for the direct conversion of lithium salts to the high value LiOH product. The method does not produce any solid effluent which makes it easy-to-adopt for use in existing industrial Li recovery plants.
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公开(公告)号：EP3897927A1
公开(公告)日：2021-10-27
申请号：EP19900554.7
申请日：2019-12-19
发明人： DARA, Saad , ZAHIRI, Beniamin
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