Abstract
Selective catalytic reduction technology(SCR) has high denitration efficiency. It is the main techniques adopted in our country of flue gas denitrification. Due to lack of effective NH3 spraying methods and means, stock of low efficiency, high rate of ammonia escape problems, secondary pollution is serious in the actual operation of the existing SCR system. In this paper, using computational fluid dynamics (CFD) method, establishing of three dimensional numerical model of SCR system. Flue gas flow and the NH3/NOx distribution characteristics were analyzed by numerical simulation in SCR system. Studying on the effect of different parameters on the ammonia injection of the reactor entrance speed of the first layer of the catalyst entrance section and the distribution of the NH3/NOx molar ratio, then providing optimizational parameters of the ammonia injection.
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