Method for controlling the production of ammonia from urea for NOx scrubbing

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United States of America Patent

PATENT NO 6436359
SERIAL NO

09697263

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Abstract

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A process to provide a pressurized gas stream useful for removing nitrogen oxides from a combustion gas stream by hydrolyzing urea in aqueous solution in a closed reactor to evolve gaseous ammonia at a rate essentially balanced to the amount required from the combustion gas stream. The improvement resides in maintaining the pressure in the reactor within a preselected range when the demand for ammonia for external use suddenly drops by cooling the solution within the hydrolysis reactor by heat exchange either within or external to the reactor in response to rapid changes in demand for ammonia required to remove said nitrogen oxides.

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Patent Owner(s)

Patent OwnerAddress
EC&C TECHNOLOGIES INC23629 MILL VALLEY ROAD VALENCIA CA 91355

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Peters, Harold James Doylestown, PA 1 16
Spencer, III Herbert W Valencia, CA 8 136

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