| 烟气脱硫过程中添加剂对石灰石的促溶作用 |
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| 引用本文： | 孙文寿,吴忠标,谭天恩.烟气脱硫过程中添加剂对石灰石的促溶作用[J].中国环境科学,2002,22(4):0-0. |
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| 作者姓名： | 孙文寿 吴忠标 谭天恩 |
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| 作者单位： | 1. 青岛大学环境科学与工程系,山东,青岛,266071
2. 浙江大学环境工程系,浙江,杭州,310027 |
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| 基金项目： | 国家“九五”重点科技攻关课题(96-910-01-02S-04) |
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| 摘 要： | 以双搅拌釜为实验设备,研究了烟气脱硫过程中硫酸钠、硫酸镁和腐殖酸钠对石灰石的促溶作用.结果表明,分别采用3种不同添加剂时,pH值等随脱硫反应时间的变化规律类似;与非强化石灰石脱硫过程对比,在相同pH值下,3种添加剂均使石灰石颗粒体积占初始体积的分率rp减小,即均能促进石灰石的溶解,改善浆液的传质性能.通过理论分析,导出了rp与浆液pH值之间的关系式,该方程能很好地关联双搅拌釜实验数据.
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| 关 键 词： | 烟气脱硫 石灰石 添加剂 溶解 搅拌釜 二氧化硫 |
| 文章编号： | 1000-6923(2002)04-0305-04 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 2001年11月16 |
Promoting effects of additives on limestone dissolution in flue gas desulfurization process |
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| SUN Wen-shou,WUZhong-biao,TAN Tian-en.Promoting effects of additives on limestone dissolution in flue gas desulfurization process[J].China Environmental Science,2002,22(4):0-0. |
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| Authors: | SUN Wen-shou WUZhong-biao TAN Tian-en |
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| Institution: | SUN Wen-shou1,WUZhong-biao2,TAN Tian-en2 |
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| Abstract: | The promoting effects of sodium sulfate, magnesium sulfate and sodium humate on limestone dissolution in flue gas desulfurization(FGD) process were studied in a stirred tank. Results demonstrated that changes of pH value etc. with desulfurization time had similar tendency when three different additives were used individually. Compared with the limestone FGD process without additives at same pH value, the three additives could all reduce the values of rp, the ratio of limestone particle volume to its initial one, that is, they could all promote limestone dissolution and improve mass transfer characteristics of the slurries. Through theoretical analysis, a mathematical model was derived which related rwith slurry pH value. The equation could correlate quite well the stirred tank experiment data. |
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| Keywords: | flue gas desulfurization limestone additive dissolution stirred tank sulfur dioxide |
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