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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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o2/co2气氛下木醋调质石灰石再燃/先进再燃脱硝性能研究
, PP. 228-234
Keywords: o2/co2,木醋液,醋酸钙,先进再燃,no,选择性非催化还原
Abstract:
？在o2/co2气氛下利用沉降炉脱硝实验台,对木醋调质石灰石和醋酸钙的再燃/先进再燃脱硝特性以及氨气的选择性非催化还原脱硝特性进行了研究。结果表明,木醋调质石灰石和醋酸钙的再燃脱硝效率随温度的升高先提高后降低,1323k时获得最高脱硝效率分别为82.70%和78.52%;再燃脱硝氧浓度不宜过高,合适的再燃比为14%~17%,停留时间为0.8s。氨气选择性非催化还原脱硝在1173k时获得最高脱硝效率为95.41%,温度窗口为1142~1335k;随着氧浓度的增大,脱硝效率不断降低,反应适宜的氨氮比为1.5,停留时间为1.2s。按氨氮比0.75向再燃区喷入氨气可显著提高木醋调质石灰石和醋酸钙的再燃脱硝效率,同时脱硝反应适宜的温度区间也得到显著拓宽,1323k时两者获得的先进再燃脱硝效率分别为93.49%和92.79%。
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