PRODUCING AMMONIUM CARBAMATE AND REDUCING NITROGEN OXIDES

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United States of America

APP PUB NO 20200023312A1
SERIAL NO

16465825

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Abstract

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A process for reducing nitrogen oxides in an exhaust stream, such as a vehicle exhaust stream, and apparatus for carrying out the process. The process comprises providing a first composition comprising aqueous urea, a second composition comprising ammonium carbamate and an exhaust stream comprising nitrogen oxides. A process for producing the ammonium carbamate is also provided. The second composition may be introduced into the exhaust stream (10) when the exhaust stream has a temperature below a threshold temperature and the first composition may be introduced into the exhaust stream when the exhaust stream has a temperature at or above the threshold temperature.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
HARGRAVE, Graham Leicestershire, GB 3 5
WILSON, Jonathan Leicestershire, GB 28 1231

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