| 城市污泥与煤混烧过程中Nox和N2O的排放特性 |
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| 引用本文： | 陈晓平,顾利锋,赵长遂,孙昕. 城市污泥与煤混烧过程中Nox和N2O的排放特性[J]. 东南大学学报(自然科学版), 2005, 35(1): 122-125 |
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| 作者姓名： | 陈晓平 顾利锋 赵长遂 孙昕 |
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| 作者单位： | 东南大学洁净煤发电与燃烧技术教育部重点实验室,南京,210096;东南大学洁净煤发电与燃烧技术教育部重点实验室,南京,210096;东南大学洁净煤发电与燃烧技术教育部重点实验室,南京,210096;东南大学洁净煤发电与燃烧技术教育部重点实验室,南京,210096 |
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| 基金项目： | 江苏省社会发展基金，江苏省建设系统科技基金 |
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| 摘 要： | 在热输入为0.2 MW的循环流化床试验台上进行了城市污泥与煤的混烧试验,着重研究了污泥/煤掺混质量比、空气过剩系数、二次风率等因素对NOx及N2O排放的影响.研究表明,随着污泥掺烧比例的增大,流化床密相区和稀相区的温度明显下降,烟气中NO和NO2的质量浓度均呈下降趋势,而N2O的质量浓度则明显上升;随着空气过剩系数的增加,NOx和N2O的排放质量浓度均呈增加趋势;在空气过剩系数保持不变的条件下,随着二次风率的增加,密相区的还原性气氛增强,NOx和N2O的排放质量浓度呈下降趋势.
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| 关 键 词： | 城市污泥 煤 混烧 NOx N2O |
| 文章编号： | 1001-0505(2005)01-0122-04 |
NOx and N2 O emission characteristics during co-combustion of municipal sewage sludge and coal |
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| Chen Xiaoping Gu Lifeng Zhao Changsui Sun Xin. NOx and N2 O emission characteristics during co-combustion of municipal sewage sludge and coal[J]. Journal of Southeast University(Natural Science Edition), 2005, 35(1): 122-125 |
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| Authors: | Chen Xiaoping Gu Lifeng Zhao Changsui Sun Xin |
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| Abstract: | The tests of co-combustion of municipal sewage sludge and coal were conducted in a 0.2 MW circulation fluidized bed (CFB) test facility focusing on the influences of the ratio of sludge weight to coal weight, excess air ratio and second air ratio on NO_x and N_2O emission characteristics. The investigations show that with the increase of sludge proportion, the temperature in dense bed and freeboard decrease significantly while the emission of NO_x decreases and the emission of N_2O increases rapidly. With the increase of excess air ratio, the emissions of NO_x and N_2O increase. When the excess air ratio remains unchanged, the reducibility in the dense bed strengthens and the emissions of NO_x and N_2O reduce synchronously with the increase of second air ratio. |
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| Keywords: | NOx N2O |
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