| 有机钙孔隙结构与脱硫性能研究 |
| 摘要点击 2538 全文点击 2443 修订日期：2007-11-26 |
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| 中文关键词 有机钙 醋酸钙镁 醋酸钙 孔隙结构 脱硫 |
| 英文关键词 organic calcium calcium magnesium acetate calcium acetate pore structure desulfurization |
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| 中文摘要 |
| 在定碳炉上对有机钙进行煅烧试验, 利用氮吸附仪测定样品的微观孔隙结构,采用智能定硫仪对有机钙进行了脱硫实验研究.结果表明，900℃ 下煅烧，醋酸钙镁的比表面积高达46.6 m2/g ，大约为普通石灰石比表面积的4倍.醋酸钙比表面积主要分布在孔径小于5 nm的微孔和中孔，醋酸钙镁比表面积主要集中在孔径为5 nm左右的中孔.醋酸钙的烧结主要发生在微孔和中孔，醋酸钙镁的烧结发生在整个孔径分布区域，有机钙表现出良好的抗烧结特性.1 000℃ 下按钙硫比为1添加钙基,有机钙的脱硫效率为68.28％～75.55％，比普通石灰石高1倍以上.煅烧形成的良好孔隙结构使得有机钙具有较高的脱硫效果. |
| 英文摘要 |
| Calcination of oganic calcium was carried out in fixed bed, pore structure of tested sample was analyzed with auto-adsorption analyzer, and desulfurization experiment was studied by intelligent sulfur determination analyzer. Specific surface area of calcium magnesium acetate(CMA) was 46.6 m2/g after calcination at 900℃ , almost four times of that of limestone. Specific surface area of calcium acetate (CA) were mainly made up of pore of diameter less than 5 nm, and those of CMA was chiefly contributed by middle pore of diameter about 5 nm. Agglomeration of CA occurred in pore of diameter less than 5 nm, while CMA was sintered in whole range of pore size distribution. Agglomeration of organic calcium were slighter. Desulfurization efficiency of organic calcium ranged from 62.28% to 75.55% at 1?000℃ as calcium/sulfur ratio being one, which was one time more than that of limestone. Perfect pore structure of organic calcium contributes to higher desulfurization efficiency. |
