PROCESS OF REMOVING NO AND NO AND APPARATUS FOR IMPLEMENTATION THEREOF Russian patent published in 2005 - IPC

Abstract RU 2264845 C2

FIELD: gas treatment.

SUBSTANCE: invention relates to reducing content of NO_x and N₂O in process and emission gases. Apparatus comprises at least one catalyst bed divided into two reaction zones. Catalyst consists of one or several iron-loaded zeolites. First reaction zone is used to destroy NOx and the second one to reduce N₂O. Between the two zones, there is a means to introduce NH₃ gas. N₂O and NO_x-containing gas is passed through first reaction zone at 350-500°C to remove N₂O and then, after addition of NH₃, through second reaction zone. Amount of NH₃ added should be sufficient to reduce NO_x.

EFFECT: accelerated impurities conversion and reduced process cost.

17 cl, 2 dwg, 1 tbl

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RU 2 264 845 C2

Authors

Shvefer Majnkhard

Shonn Ehrikh

Turek Tomas

Dates

2005-11-27—Published

2001-01-09—Filed