| 石灰湿法脱硫传质－反应过程机理 |
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| 引用本文： | 吴忠标,谭天恩.石灰湿法脱硫传质－反应过程机理[J].环境科学,1996(2). |
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| 作者姓名： | 吴忠标 谭天恩 |
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| 作者单位： | 浙江大学化工系 |
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| 摘 要： | 对以族流板塔作吸收器的石灰湿法烟气脱硫技术进行了试验研究，分析了石灰浆液吸收ＳＯ２的传质－反应过程，并提出了Ｃａ（ＯＨ）２浆液吸收ＳＯ２的传质－反应过程机理。本机理认为，总反应速度由气相中ＳＯ２的扩散（气相阻力）和液相中Ｃａ（ＯＨ）２固体的溶解（包括在液相阻力之内）及扩散控制；同时认为，反应过程可分为气相阻力控制、气液相阻力共同控制、液相阻力控制３个阶段。此外，本机理得到了实验的验证。以上结果将有助于改进石灰湿法烟气脱硫工业装置的设计和操作。
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| 关 键 词： | 烟气脱硫，过程机理，传质－反应，石灰，湿法 |
Mass Transfer-Reaction Process Mechanism or Wet Flue Gas Desulfurization with Lime |
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| .Wu Zhongbiao and Tan Tian''''en.Mass Transfer-Reaction Process Mechanism or Wet Flue Gas Desulfurization with Lime[J].Chinese Journal of Environmental Science,1996(2). |
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| Authors: | Wu Zhongbiao and Tan Tian'en |
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| Abstract: | By studying experimentally wet flue gas desulfurization with lime as absorbent and rotating-stream-tray scrubber as absorber, the mass transfer and reaction process on Ca(OH)2 slurry absorbing SO2 is analyzed. Furthermore,the process mechanism is proposed. According to the mechanism, the total reaction rate is controlled by SO2diffusion in gas phase and Ca(OH)2 dissolution and diffusion in liquid phase. The reaction process can be divided into three stages, the stage controlled by gas phase resistance, by gas phase and liquid phase resistance, and by liquid phase resistance. The process mechanism has been verified by the experiment. These results will help to optimize the design and operation of the industrial installation of wet flue gas desulfurization with lime. |
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| Keywords: | flue gas desulfurization mechanism mass transfer-reaction process lime wet |
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