| pH值对石灰(石灰石)湿法脱硫反应机理的影响 |
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| 引用本文： | 陈昭琼,童志权.pH值对石灰(石灰石)湿法脱硫反应机理的影响[J].环境科学,1996,17(5):42-44. |
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| 作者姓名： | 陈昭琼 童志权 |
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| 作者单位： | 湘潭大学化工系 湘潭 411105;湘潭大学化工系 湘潭 411105 |
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| 基金项目： | 湖南省重点科技攻关项目 |
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| 摘 要： | 为了探讨ｐＨ值对石灰石湿法脱硫反应机理的影响，进行了用亚硫酸钙沉淀与水的混合液吸收ＳＯ２的实验，研究表明，溶液中离子化合物的型态与体系的ｐＨ值密切相关。体系ｐＨ值小于７时，硫阴离子主要以ＨＳＯ＾－３型态存在，脱硫反应以生成Ｃａ（ＨＳＯ３）２为主；体系ｐＨ值大于７时，硫阴离子主要以ＳＯ＾－２３型态存在，脱硫反应以生成ＣａＳＯ３．１／２Ｈ２Ｏ或ＣａＳＯ４．２Ｈ２Ｏ为主。
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| 关 键 词： | pH值 石灰 石灰石 脱硫 反应机理 湿法 |
| 收稿时间： | 1996/1/25 0:00:00 |
pH Volue Effect on the Reaction Mechanism of Wet FGD with Lime/Limestone |
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| Chen Zhaoqiong.pH Volue Effect on the Reaction Mechanism of Wet FGD with Lime/Limestone[J].Chinese Journal of Environmental Science,1996,17(5):42-44. |
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| Authors: | Chen Zhaoqiong |
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| Institution: | Dept. of Chemical Eng., Xiangtan University, Xiangtan 411105;Dept. of Chemical Eng., Xiangtan University, Xiangtan 411105 |
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| Abstract: | The reaction mechanism of wet FGD with Lime/Limestone was studied. The results showed that the species of ions and compounds in the solution effected significantly the reaction mechanism of wet FGD. While pH of the system <7, main speeies of sulfur negative ions is HSO3-and desulphudation are forming Ca(HSO3)2 mainly, pH of the system>7, then main species of sulfur negative ions is SO32- and desulphudation are forming CaSO3·1/2H2O or CaSO4·2H2O mainly. |
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| Keywords: | pH volue FGD with lime/limestone mechanism |
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