| 热处理对含氮活性碳纤维脱除SO2能力的影响 |
| 摘要点击 952 全文点击 1209 投稿时间：1998-06-11 |
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| 中文关键词 含氮沥青基活性碳纤维 热处理 SO2的脱除 |
| 英文关键词 nitrogen containing activated carbon fiber SO2 removal heat treatment |
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| 中文摘要 |
| 考察中高温热处理对含氮沥青基活性碳纤维[PACF(NH3)]脱除SO2的能力的影响结果表明,在900-1100℃尤其是在1000℃下热处理可显着提高PACF(NH3)脱除SO2的能力。当在30℃下模拟烟气中SO2、O2和H2O的浓度分别为0.002ml/ml、0.1ml/ml和0.1ml/ml,气体流动速率为100ml/min时,0.25g的3种不同比表面积的PACF(NH3)完全除去SO2的时间分别从热处理前的0.25h、1h和1h延长到热处理后的1h、2h和3.5h,SO2穿透后的稳态浓度从热处理前的73%、54%和38%下降到热处理后的32%、24%和10%.脱硫活性的提高主要是由于热处理增强了PACF(NH3)对SO2和O2的吸附作用,加速了SO2的氧化反应。 |
| 英文摘要 |
| The influences of heat treatment on the removal of SO2 over PACF(NH3) activated by the mixture of ammonia and steam in the presence of O2 and H2O were investigated.The results show that calcination at 900—1100℃,especially at 1000℃,can improve markedly the removal abilities of SO2 over PACF(NH3).When the model flue gas containing 0.002ml/ml SO2,0.1ml/ml O2 and 0.1ml/ml H2O in N2(The total folw rate is fixed to be 100ml/min) is used,the times that SO2 is removed completely by PACFs(NH3) of 0.25g with different specific surface areas are extended from 0.25h,1h and 1h for untreated PACFs(NH3) to 1h,2h and 3.5h for heat treated ones,the steady state concentrations of SO2 decrease from 73%,54% and 38% for untreated PACFs(NH3) to 32%,24% and 10% for heat treated ones.The increasing removal abilities benefit from the fact that heat treatment enhances chiefly adsorption capacity of SO2 and O2,accelerating oxidation of SO2. |
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