Urea pyrolysis chamber and process for reducing lean-burn engine

Details Urea pyrolysis chamber and process for reducing lean-burn engine Urea pyrolysis chamber and process for reducing lean-burn engine

1997-05-12

1999-10-19

Dunn, Thomas

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

4232391, C01B 2146

Patent

active

059684640

ABSTRACT:
Urea is pyrolyzed in a chamber designed to facilitate gasification of the urea by pyrolysis with conversion of urea to ammonia and isocyanic acid (HNCO) with water vapor and carbon dioxide. The product gases are introduced into exhaust gases from a lean-burn engine, preferably upstream of a turbocharger. The exhaust gases are then contacted with an SCR catalyst.

REFERENCES:
patent: 4842834 (1989-06-01), Burton

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