Experimental Study Effects of Na, K, Fe on the Denitrification Efficiency of Biomass Char in the Absence of Oxygen

doi:10.11930/j.issn.10.11930.2015.1.157

Abstract

Abstract: The contents of Na, K and Fe in biomass fuels are high, which is helpful to reburning denitrification adopted for low-NOx combustion. Considering the effective utilization of biomass resources in China, it is necessary to study the denitration performance of biomass char. Therefore, the effects of Na, K and Fe in the NO-char reaction are studied in the fixed-bed system. The results show that adequate Na, K and Fe can increase the reduction of NOx, and by adding these elements to the acid-washed de-ashed biomass char, the NOx removal efficiency can also be raised substantially. In addition, the denitrification efficiency of biomass char will be increased by more than 20% when 0.1 g/g Na2CO3 or K2CO3 being added, and higher increase occurs with the rising amount of Na and K The effect of Fe on biomass char denitrification efficiency is superior to that of Na and K. The denitrification efficiency can be increased by 20% when 0.01 g/g Fe(NO3)3 is added, but it will be decreased while the amount of Fe is more than 0.04 g/g.

Key words: low NOx combustion, reburning denitrification, biomass fuel, biomass char denitrification, Na, K, Fe

CLC Number:

X511
TM621

YUN Duan. Experimental Study Effects of Na, K, Fe on the Denitrification Efficiency of Biomass Char in the Absence of Oxygen[J]. journal1, 2015, 48(1): 157-160.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.1.157

https://www.electricpower.com.cn/EN/Y2015/V48/I1/157

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