发明授权
- 专利标题: Method for the preparation of a reducing agent composition
- 专利标题(中): 制备还原剂组合物的方法
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申请号: US12526302申请日: 2008-02-14
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公开(公告)号: US08133460B2公开(公告)日: 2012-03-13
- 发明人: Jouko Arvola , Timo Härmä , Eero Hätälä , Lauri Määttä , Timo Nissinen , Pentti Pekonen
- 申请人: Jouko Arvola , Timo Härmä , Eero Hätälä , Lauri Määttä , Timo Nissinen , Pentti Pekonen
- 申请人地址: FI Helsinki
- 专利权人: Kemira Oyj
- 当前专利权人: Kemira Oyj
- 当前专利权人地址: FI Helsinki
- 代理机构: Thomas, Kayden, Horstemeyer & Risley, LLP
- 优先权: FI20070134 20070215
- 国际申请: PCT/FI2008/050062 WO 20080214
- 国际公布: WO2008/099063 WO 20080821
- 主分类号: B01D53/54
- IPC分类号: B01D53/54
摘要:
The invention relates to a method for preparing a reducing agent composition, which is used in the selective catalytic reduction of nitrogen oxides and which contains from 20 to 40% by weight of urea, from 20 to 40% by weight of ammonium formate, and water. The composition is prepared by adding urea to the aqueous solution of ammonium formate that is prepared in situ, and by preparing the aqueous solution of ammonium formate using, as starting materials, a source of ammonium, a source of formate, and water.
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