发明名称 |
ELECTRODIALYSIS WATER SPLITTING PROCESS |
摘要 |
An electrodialysis water splitting processes incorporates a chromatograph ic separation step using an amphoteric ion exchange resin to remove contaminati on salts from a salt solution feedstream and a base product solution. When the chromatographic column is subsequently eluted with water an effective separation of the components is achieved. The separated pure salt stream is forwarded to a n electrodialysis water splitter cell for conversion to acid and base. The bas e product solution (sodium hydroxide, potassium hydroxide) may be similarly purified b y passing through a second chromatographic column also containing an amphoteric resin to separate the base from the salt (recovered salt). The process is also applicable in a chlor-alkali process for acidifying the brine feed to the electrolysis cell and for producing high purity caustic from salt.
|
申请公布号 |
CA2315344(A1) |
申请公布日期 |
2001.03.01 |
申请号 |
CA20002315344 |
申请日期 |
2000.08.03 |
申请人 |
ARCHER DANIELS MIDLAND COMPANY |
发明人 |
MANI, K.N. |
分类号 |
B01D15/00;B01D15/08;B01D61/44;B01D61/46;B01J43/00;C01D1/32;C01D1/38;C02F1/469;C25B7/00;C25B15/08;(IPC1-7):C25B1/16;C25B1/34;C25B1/46 |
主分类号 |
B01D15/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|