摘要
为实现“节能减排、省工降耗”，同时为建设环境友好型现代烟草农业提供理论依据，以烤烟密集烤房群为监测对象，利用eeom—J2KN烟气分析仪和大气采样器对烤烟烘烤过程中密集烤房烟囱气体成分和烤房群周围空间环境s0：浓度变化进行研究．结果表明烤烟烘烤过程烟囱烟气中CO2和SO2均在38℃稳温时最大，氮氧化物在42℃稳温时最大；SO2排放浓度范围为1327．60～2218．40mg·m^-3；通过添加4．0％的固硫剂，平均SO2排放可减少49．7％．对烤房群下风向SO：扩散的测算表明，SO2地面浓度最大值出现在变黄期；水平方向43～80m范围内，SO：质量浓度超出0．5mg·m^-3，其中50m处的空气中SO2浓度值最高，为0．57mg·m^-3；在距离烤房群50m的垂直方向上，距离地面0．9～1．8m高处的s02质量浓度均超出0．5mg·m^-3，其中1．6m高处的S0：浓度达到最高，为0．65mg·m^-3；通过添加固硫剂，可使SO2质量浓度平均降低0．43mg·m^-3．密集烤房群下风向水平距离120m范围内属干大气环墉防护距离．
In order to manifest lower energy consumption and less labor employment, and provide the theoretical basis for constructing environmentally friendly modern tobacco agriculture, this paper analyzed gas composition of the chimney from a bulk-curing barn and the dispersion of sulfur dioxide （ SO2 ） around the workshop cluster using ecom-J2KN flue gas analyzer and air sampler. During cu- ring, the concentrations of carbon dioxide （ CO2 ） and SO2 in the chimney were both highest at 38 ℃, while the concentration of nitrogen oxides （ NOx ） was highest at 42 ℃. The emission concentration of SO2 from the chimney was 1327.60-2218.40 mg . m^-3. Average SO2 emission would decrease by 49.7% through adding 4.0% of a sulfur-fixed agent. The highest concentrations of SO2 in the surface soil appeared at the yellowing stage. SO2 concentration in horizontal direction localized at 43-80 m exceeded 0.5 mg. m^-3. The highest concentration of SO2 （0.57 mg. m^-3） was observed at 50 m. At 50 m in the downstream wind direction of the workshop cluster, SO2 concentration in vertical direction localized at 0.9-1.8 m exceeded 0.5 mg . m^-3, and the highest concentration of SO2 in vertical direction was 0.65 mg . m^-3 at 1.6 m. During curing, the average concentration of SO2 was decreased by 0.43 mg. m^-3 by using the sulfur-fixed agent. The polluted boundary was localized at 120 m in the downstream wind direction of the workshop cluster.
出处
《应用生态学报》
CAS
CSCD
北大核心
2014年第3期857-862,共6页
Chinese Journal of Applied Ecology
基金
国家烟草专卖局科技重大专项(Ts-01-2011006)资助
关键词
二氧化硫
烤烟
密集烤房群
空间分布
SO2
flue-cured tobacco
bulk-curing barn cluster
spatial distribution
