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研究论文

Evaluation of SO₂ and NO_x emissions resulted from biomass fuels utilization in China

摘要：根据各地区生物质燃料消耗状况和SO₂O、NO_x排放因子,估算了20世纪90年代中国生物质能源利用过程中的SO₂O、NO_x排放量,并给出了分省区、分生物质燃料类型的排放清单.研究表明,中国生物质燃料消耗及其排放的SO₂O、NO_x量分别从1991年的38.1万t和54.9万t下降为1999年的33.2万t和45.3万t.在地区、燃料类型上分布不平衡:SO₂O和NO_x排放量均较大的包括山东、江苏、河北、内蒙古、湖北等.其中,内蒙古SO₂O排放量最大,而山东省NO_x排放量最高;秸杆是SO₂O和NO_x排放的最主要来源,薪柴次之;牲畜粪便对SO₂O贡献率接近30%,而对NO_x贡献率仅3%—4%.

Abstract：Based on rural biomass energy consumption in China and emission factors, emissions of SO₂ and Ni_x in 1990s resulted from bio fuels burning are evaluated. Specially, emission inventories by provinces and fuels are developed and discussed. In general, emissions of SO₂ and Ni_x decreased slowly, from³81kt and 549kt in 1991 down to 332kt and 453kt in 1999, respectively. Obvious unevenness by regions and fuels is found: larger amounts of SO₂ and Ni_x come from Shandong, Jiangsu, Hebei and Hubei province, and the largest emissions are found in Inner Mongolia autonomous region and Shandong province, respectively; crop residue is the main source of SO₂ and Ni_x emissions; share of animal waste on SO₂ emissions is nearly 30%, far more than that on Ni_x.