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OALib Journal期刊
ISSN: 2333-9721
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木醋调质石灰石用于o2/co2燃煤同时脱硫脱硝性能
, PP. 1378-1383
Keywords: o2/co2,煤燃烧,脱硫脱硝,木醋,调质,石灰石
Abstract:
？采用管式炉和沉降炉分别研究了o2/co2气氛下燃煤预混和烟气喷入木醋调质石灰石的同时脱硫脱硝性能。结果表明,在温度1173~1323k、钙硫比为2.0的条件下,木醋调质石灰石混煤燃烧脱硫效率91.0%~94.9%、脱硝效率23.5%~30.8%。随着钙硫比的增加,木醋调质石灰石混煤燃烧脱硫脱硝效率增大,适宜的钙硫比为1.5~2.0。相同的燃烧温度和钙硫比,含硫量高的煤预混木醋调质石灰石燃烧获得较高的脱硫、脱硝效率。木醋调质石灰石用于o2/co2燃煤脱硫脱硝性能优于醋酸钙。o2/co2燃煤烟气中喷入木醋调质石灰石、钙硫比为2.0、停留时间为0.8s、在1223和1323k时获得最大脱硫效率和最大脱硝效率为75.8%和86.6%。在上述条件下将氨气喷入反应区,氨氮比为0.75、温度为1223和1323k时,脱硫效率分别为73.2%和63.9%,脱硝效率分别为93.2%和94.8%。
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