Analysis of pollutant emission of typical domestic biomass pellet heating furnaces in Tianjin
MA Wen-chao1, TAI Ling-yu1, CHEN Guan-yi2,1, HE Chao3, GUAN Ya-nan1, SONG Guang-wu3, YAN Bei-bei1, CHENG Zhan-jun1
1. Department of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China; 2. School of Sciences, Tibet University, Lasha 850000, China; 3. Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China
Abstract：In order to investigate the pollutant emission status of Tianjin's domestic biomass pellet heating furnaces and provide scientific support for the governments'policy formulation,this study investigated the effect of the briquette fuel type and the furnace capacity on the pollutant emissions in Tianjin.The result showed that:rice straw contains more ash residues and less sulfur content than cotton straw,causing more smog and CO emissions,and less SO2 emission.The emission amounts of CO and SO2 increased,and that of NOx decreased with the increasing of the feed rate during the cotton straw combustion in the same furnace.The major components of volatile organic compounds (VOC) emission,during the combustion process of these two briquette fuels,were ketones,benzenes,and aldehydes.The average emission values of NOx,CO,SO2,smog were 672.70,2297.94,124.00,109.35mg/m3,respectively.It is necessary to reduce the pollution emission of domestic biomass heating furnaces by adding water-bath duster device,adjusting the supply air rate to match the feed rate,and maintaining an appropriately excessive coefficient.Appropriate standards and policies are also needed to control of the quality of the domestic biomass heating furnaces and briquette biomass fuels.
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