| 发明名称 |
Method for purifying aqueous urea solution |
| 摘要 |
<p>The invention relates to a method for purifying an aqueous urea solution using optionally particulate filtering and a reverse osmosis treatment. An assembly for carrying out the purification is disclosed. The purified urea solution is used in selective catalytic reduction of nitrogen oxides.</p> |
| 申请公布号 |
EP1857439(A1) |
申请公布日期 |
2007.11.21 |
| 申请号 |
EP20060114097 |
申请日期 |
2006.05.17 |
| 申请人 |
KEMIRA GROWHOW OYJ |
发明人 |
WECKMAN, ANDERS;LEHTONEN, RIKU;PALENIUS, TAPIO |
| 分类号 |
C07C273/16;B01D53/94;B01D61/02;B01D61/08;B01D61/14;B01D61/18 |
主分类号 |
C07C273/16 |
| 代理机构 |
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