发明名称 |
PROCESS TO PREPARE CHLORINE-CONTAINING COMPOUNDS |
摘要 |
The present invention relates to process to prepare a chlorine-containing compound using an aqueous salt solution containing at least 100 g/l of sodium chloride and a contaminating amount of polyvalent cations comprising the steps of (i) preparing an aqueous salt solution containing at least 100 g/l of sodium chloride and at least 0.01 ppm of polyvalent cations by dissolving a sodium chloride source in water, (ii) adding an effective amount of at least one positive retention enhancing component to the aqueous solution, (iii) subsequently subjecting the solution to a nanofiltration step, thereby separating the solution into a retentate which is enriched for polyvalent cations and a permeate which is the purified aqueous salt solution, (iv) reacting the chloride anions in the permeate to a chlorine-containing compound by an electrolysis step, and (v) recycling at least part of the retentate to dissolution step (i). |
申请公布号 |
CA2598480(A1) |
申请公布日期 |
2006.08.24 |
申请号 |
CA20062598480 |
申请日期 |
2006.02.13 |
申请人 |
AKZO NOBEL COATINGS INTERNATIONAL B.V. |
发明人 |
TEN KATE, ANTOON;DEMMER, RENE LODEWIJK MARIA;KUZMANOVIC, BORIS;BARGEMAN, GERRALD;VAN LARE, CORNELIS ELIZABETH JOHANNUS;MAYER, MATEO JOZEF JACQUES;SCHUTYSER, MAARTEN ANDRE IRENE;WESTERINK, JAN BAREND |
分类号 |
C01B7/03;C01B11/14;C01D3/14 |
主分类号 |
C01B7/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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