Rarefied-burning automobile exhaust gas catalyzing and purifying method and apparatus
Title：
Rarefied-burning automobile exhaust gas catalyzing and purifying method and apparatus
Application Number：
 02117084
Application Date：
 2002/04/29
Announcement Date：
 2003/11/12
Pub. Date：
Publication Number：
 1454701
Announcement Number：
 1246070
Grant Date：
 2006-3-22
Granted Pub. Date：
 2006-3-22
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 B01D 53/94, F01N 3/28
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Zhu Tianle, Hao Jiming, Fu Lixin
Key Words：
 Rarefied-burning, automobile exhaust gas, catalyzing, purifying
Abstract：
 The invention is a kind of catalyst purifying method and device for tails of lean firing car. The invention sets two catalyzing reaction beds on the discharging pipe of the engine; there is an additional reducer nozzle in the middle of the two beds. The first bed uses hydrocarbon and carbon monoxide in tails to reduce nitrogen-oxygen compound, at the same time, the hydrocarbon and carbon monoxide are changed into carbon dioxide and water; the second bed uses the additional oxygen hydrocarbon reducer to reduce carbon-oxygen compound, at the same time, the additional reducer is changed into water and carbon dioxide. Compared with current technology scheme, it can spread the range of active temperature, enhances the purifying efficiency, takes advantage of hydrocarbon discharged by the engine and additional oxygen hydrocarbon.
Claim：
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PCT：
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2008-4-17
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