NO Release Characteristics of Biomass/Coal Co-Combustion at Constant Temperature in Oxygen-Enriched Atmosphere

doi:10.3969/j.issn.1000-7229.2015.11.021

Abstract

Abstract:

To clear the NO release law under the interaction of oxygen-enriched combustion and biomass/coal co-combustion， this paper studied the NO release characteristics during biomass/coal co-combustion process in oxygen-enriched atmosphere， and discussed the influence law of atmosphere， temperature， biomass blending ratio， coal type and biomass type on NO release characteristics， with using homemade iso-thermal TGA and pollutants synchronous measurement system. The results show that two peaks and conversion of NO in oxygen-enriched atmosphere are less than that in air atmosphere when Yangquan coal blending 20% corn cob at 21% oxygen concentration. As oxygen concentration increasing， the NO release rate curve is changed from two peaks to one peak， and the NO conversion of samples increases. As the biomass blending ratio increasing， the NO conversion shows a decreasing tendency. The NO conversion of samples increases with the temperature rising. The NO conversion decreases when coal blending corn cob；and the NO conversion decreases when Yangquan coal blending biomass.

Key words: oxygen-enriched atmosphere, co-combustion of biomass and coal, co-combustion at constant temperature, NO release characteristics

CLC Number:

TM 621.2

WANG Zhe， FENG Tao， HUANG Xingzhi， SHAO Huan， GUO Taicheng， WANG Chunbo.

NO Release Characteristics of Biomass/Coal Co-Combustion at Constant Temperature in Oxygen-Enriched Atmosphere

[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(11): 135-140.

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