燃煤循环流化床掺烧城市生活垃圾过程中酸性气体排放  

ACID GAS EMISSIONS DURING MIXING-FIRING OF MUNICIPAL SOLID WASTE AND COAL IN A CIRCULATING FLUIDIZED BED

作　　者：董长青[1] 金保升[1] 仲兆平[1] 兰计香[1] 李锋[1] 黄亚继[1] 

机构地区：[1]东南大学洁净煤发电及燃烧技术教育部重点实验室热能工程研究所,江苏南京210096

出　　处：《中国电机工程学报》2002年第3期32-37,共6页Proceedings of the CSEE

基　　金：国家教育部科学技术研究重点资助项目 (99174);高等学校重点实验室访问学者基金资助项目 (B0 0 13 16);国家教育部<跨世纪优秀人才计划>基金资助项目 (k980 0 2 6) ;江苏省教育厅"青蓝工程"基金资助项目 (JS980 8)

摘　　要：在一燃煤循环流化床实验装置上进行了掺烧城市生活垃圾实验 ,主要研究了掺烧过程中酸性气体 (NO、N2 O、HCl和SO2 )的排放。实验结果显示 :加入城市生活垃圾 (MSW )时 ,HCl排放量增加 ,NO和SO2 的排放量减少 ,N2 O随掺烧比R(MSW /Coal)增大先降低 ,随R进一步增大 ,N2 O排放浓度略有增加 ;当垃圾与煤掺烧比 (R)不变时 ,温度增加 ,NO排放量增加 ,N2 O排放减少 ,SO2 和HCl排放浓度基本不变。采用前向神经网络模型预测NO排放随混合燃料的变化 ,当隐层单元数为 9时 ,模拟值与实验值符合较好。Tests on the mixing firing of municipal solid waste (MSW) and coal were performed in a circulating fluidized bed and focused on the acid gas emissions.The results show that the addition of MSW leads to lower NO and SO 2 emissions.On the other hand,HCl concentrations increase with the amount of waste added.N 2O emissions decreased rapidly when MSW were fed into the CFB.With the ratio of MSW to coal increasing,the N 2O emissions increased slowly.When the fuel mixing ratio remained constant,NO emissions increased but N 2O decreased and SO 2,HCl,C 2 remained constant with temperature increasing.A feed forward neural network model was proposed to predict the variation of NO emission with the mixture composition.

关 键 词：城市生活垃圾过程 酸性气体排放 掺烧 燃煤循环流化床 

分 类 号：X705[环境科学与工程—环境工程]