发明名称 |
Exhaust gas cleaner and method for removing nitrogen oxides |
摘要 |
Nitrogen oxides are removed from an exhaust gas containing nitrogen oxides and oxygen in a proportion larger than its stoichiometric proportion relative to unburned components in the exhaust gas, by (i) disposing an exhaust gas cleaner in a flow path, the exhaust gas cleaner comprising a first catalyst composed of 0.2-20 parts by weight (on a metal basis) of silver or silver oxide supported on a porous inorganic oxide, and a second catalyst composed of 1-50 parts by weight (on an oxide basis) of tungsten and/or vanadium supported on a porous inorganic oxide; (ii) introducing oxygen-containing organic compounds having 2 or more carbon atoms or a fuel containing the oxygen-containing organic compounds into the exhaust gas on the upstream side of the exhaust gas cleaner; and (iii) bringing the exhaust gas into contact with the exhaust gas cleaner at a temperature of 150-650° C., thereby causing a reaction of the nitrogen oxides with the oxygen-containing organic compounds to remove the nitrogen oxides.
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申请公布号 |
US6284211(B1) |
申请公布日期 |
2001.09.04 |
申请号 |
US19940295012 |
申请日期 |
1994.08.24 |
申请人 |
JIRO HIRAISHI OF DIRECTOR-GENERAL OF AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY;KOCAT INC. |
发明人 |
MIYADERA TATSUO;YOSHIDA KIYOHIDE |
分类号 |
B01D53/86;B01D53/94;B01J23/22;B01J23/30;B01J23/50;B01J23/66;B01J23/68;B01J35/00;B01J35/02;B01J35/04;(IPC1-7):B01J8/02 |
主分类号 |
B01D53/86 |
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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