发明名称 |
METHOD AND DEVICE FOR PROVIDING A GASEOUS MIXTURE |
摘要 |
<p>A device and a method for providing a gaseous substance mixture including at least one of a reducing agent and/or a reducing agent precursor, include a reservoir for an aqueous solution including at least one reducing agent precursor, from which the aqueous solution can be delivered into at least one metering line having a dispensing opening by a delivery device, and a device for heating the metering line above a critical temperature greater than the boiling temperature of water. Complete evaporation of an aqueous solution including urea and subsequent hydrolysis to form a substance mixture including ammonia, are carried out. The substance mixture is metered as a reducing agent into an SCR catalytic converter. Carrying out the evaporation outside the exhaust system uses considerably smaller hydrolysis catalytic converters, which is space-saving and cost-saving compared to conventional devices for providing a reducing agent for selective catalytic reduction of nitrogen oxides.</p> |
申请公布号 |
EP2021102(A1) |
申请公布日期 |
2009.02.11 |
申请号 |
EP20070725277 |
申请日期 |
2007.05.16 |
申请人 |
EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH |
发明人 |
BRUECK, ROLF;BRUGGER, MARC;HAERIG, THOMAS;HIRTH, PETER;KLEIN, ULF |
分类号 |
B01D53/94;B01D53/90;F01N3/20 |
主分类号 |
B01D53/94 |
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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