METHOD FOR REMOVING HARMFUL COMPONENTS FROM EXHAUST GASES

United States of America

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The present invention is concerned with a new method for removing harmful components such as nitrogen oxides, hydrocarbons and carbon monoxide from exhaust gases, especially automobile exhaust gases, by passing the exhaust gases entrained with oxygen through a catalyst bed which selectively oxidizes hydrogen, then passing the treated gases through a catalyst bed which selectively reduces the nitrogen oxides in the gases, and finally passing the gases into a catalyst bed which oxidizes the carbon monoxide and hydrocarbons in the gases.

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