| 草粉担载Na2CO3可逆脱硫吸附剂的制备及脱硫活性 |
| 摘要点击 1470 全文点击 1752 投稿时间：2002-10-31 修订日期：2003-01-16 |
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| 中文关键词 草粉 Na2CO3 在线红外 脱硫效率 SO2 无定形态 |
| 英文关键词 straw Na2CO3 desulfurization efficiency online IR SO2 amorphous structure |
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| 中文摘要 |
| 通过浸渍方法,制备了5%～90%(质量分数)担载量Na2CO3/草粉脱硫剂.实验结果表明,较小的草粉粒度(≤0.28mm)和较低的气体流量(40mL/min)有利于SO2脱除,但是脱硫温度(70℃～300℃)对脱硫效果影响不大.利用XRD,SEM,ATR-IR等分析手段,研究了草粉改性Na2CO3脱硫吸附剂的机理.实验证明:改性Na2CO3吸附剂高效脱硫的机理主要在于吸附剂表面结构的无定形态,因而具有比较大的比表面积(12.14m2/g)和孔体积(0.093cm3/g). |
| 英文摘要 |
| A series of SO2 sorbents 5%～90%(mass percent) Na2CO3/straw were prepared by conventional incipient wetness impregnation of straw with an aqueous solution of Na2CO3. It was showed that small particle size (≤0.28mm) of the straw and low flow rate (40mL/min) of the feed gas favor the removal of SO2, while temperature (70℃～300℃) has little effect on the desulfurization efficiency. Based on XRD, SEM and ATR-IR analysis it can be concluded that the Na2CO3 on the surface of the straw is mainly in an amorphous state. The unique structural features of the straw and its interaction with Na2CO3 lead to the amorphous structure having greater surface area (12.14m2/g) and pore volume (0.093cm3/g) with a high loading of Na2CO3. |
