METHOD OF SELECTIVE CATALYTIC REDUCTION OF NO AND DEVICE TO INTENSIFY CARBAMIDE GASIFICATION FOR PRODUCING AMMONIA-BEARING GAS Russian patent published in 2013 - IPC B01D53/56 B01D53/74 B01D53/00

Abstract RU 2480270 C2

FIELD: process engineering.

SUBSTANCE: invention relates to carbamide gasification for reducing nitrogen oxide concentration in combustion products. Proposed method comprises carbamide feed into gasification chamber and injecting heated gases therein upstream of carbamide feed point. Injector allows distributing carbamide in the form of fine particles or drops. Note here that heated gas temperature upstream of carbamide feed point makes, at least, 204°C. Note also that said chamber is equipped with perforated gas distribution plate with central opening and set of smaller holes. The latter are arranged to create gas flow velocity nearby injector higher than that around chamber side walls. Gas distribution plate is located so that gas flow via central opening and between injector and aforesaid plate.

EFFECT: uniform gas distribution.

10 cl, 3 dwg, 1 ex

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RU 2 480 270 C2

Authors

Sun Uil'Jam Kh.

Lau Ronal'D A.

Bojl Dzhon M.

Dates

2013-04-27—Published

2009-05-27—Filed