
基本信息:
- 专利标题: 用于从发动机废气中除去有害化合物的方法和系统
- 专利标题(英):METHOD AND SYSTEM FOR THE REMOVAL OF NOXIOUS COMPOUNDS FROM ENGINE EXHAUST GAS
- 申请号:CN201280071068.8 申请日:2012-09-21
- 公开(公告)号:CN104136099A 公开(公告)日:2014-11-05
- 发明人: K.约翰森
- 申请人: 赫多特普索化工设备公司
- 申请人地址: 丹麦灵比尼莫尔亍55号
- 专利权人: 赫多特普索化工设备公司
- 当前专利权人: 优美科股份两合公司
- 当前专利权人地址: 丹麦灵比尼莫尔亍55号
- 代理机构: 中国专利代理(香港)有限公司
- 代理人: 周铁; 杨思捷
- 国际申请: PCT/EP2012/068623 2012.09.21
- 国际公布: WO2013/127473 EN 2013.09.06
- 进入国家日期: 2014-09-02
- 主分类号: B01D53/90
- IPC分类号: B01D53/90 ; B01D53/94 ; F01N3/035 ; F01N3/20 ; F01N3/10
The invention relates to a method and system for the removal of noxious compounds from lean burning engines, the method comprising in series the steps of contacting the exhaust gas with a catalyst being active in oxidation of volatile organic compounds and carbon monoxide, passing the treated exhaust gas through a particulate filter catalysed with a first SCR catalyst, and passing the exhaust gas leaving the particulate filter through a second SCR catalyst, wherein ammonia is injected into the exhaust upstream of the catalysed particulate filter at a temperature below or at about 220 deg c and wherein urea is injected into the exhaust gas between the first and the second SCR catalyst when the exhaust gas has reached a temperature of about 200 deg c.
公开/授权文献:
- CN104136099B 用于从发动机废气中除去有害化合物的方法和系统 公开/授权日:2016-11-30
IPC结构图谱:
B01D53/34 | 组优先于B01D53/02至B01D53/32组。 |
--B01D53/74 | ..净化废气的一般方法;为这类方法特别设计的设备或装置 |
----B01D53/81 | ...固相方法 |
------B01D53/90 | ....注入反应剂 |