Exhaust gas purification system and exhaust gas purification method
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United States of America Patent
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Oct 9, 2012
Grant Date -
Sep 30, 2010
app pub date -
Sep 3, 2008
filing date -
Sep 26, 2007
priority date (Note) -
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Abstract
An exhaust gas purification system, which upgrades exhaust gas purification while curtailing an increase in an operating cost, is disclosed. The exhaust gas purification system comprises an SCR catalyst for reducing and removing nitrogen oxides in an exhaust gas from an engine (10) by bringing the nitrogen oxides into contact with a reducing agent, oxidation catalysts (11, 17) for oxidizing gas components in the exhaust gas, a water electrolysis device (24) for producing oxygen by electrolyzing water, and an oxygen supply pipe (29) for supplying the oxygen produced by the water electrolysis device (24) to the exhaust gas.
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