Process for the removal of nitrogen oxides from off-gases

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component

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B01J 800, B01J 802

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active

054014794

ABSTRACT:
The present invention relates to a process for the purification of off-gases containing nitrogen oxides. An off-gas is passed through a reactor in admixture with ammonia or an ammonia precursor over a plurality of spaced catalyst beds under conditions to reduce the nitrogen oxides to nitrogen gas while heat is liberated. After the gas stream has obtained a desired temperature, the gas flow is reversed.

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Deggin, D., Poller, J., und Weinzierl, K. "Die Bedeutung der Chemietechnik fur fortgeschrittene Technologien zur Stromerzeugung" Chem.-Ing.-Tech. 59 (1987) Nov. 8, S.629-636, pp. 629-636.

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