[1]钟秦.石灰石湿法烟气脱硫中氟络合物的影响[J].南京理工大学学报(自然科学版),2001,(01):75-78.
 ZhongQin.The Effects of Fluoride Complexes in Wet Limestone Flue Gas Desulfurization[J].Journal of Nanjing University of Science and Technology,2001,(01):75-78.
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石灰石湿法烟气脱硫中氟络合物的影响()
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2001年01期
页码:
75-78
栏目:
出版日期:
2001-02-28

文章信息/Info

Title:
The Effects of Fluoride Complexes in Wet Limestone Flue Gas Desulfurization
作者:
钟秦
南京理工大学化工学院, 南京210094
Author(s):
ZhongQin
School of Chemical Engineering,NUST,Nanjing 210094
关键词:
烟气脱硫 络合物 石灰石
Keywords:
f lue g as desul furizat ion f luoride complex compounds aluminum limestone
分类号:
X701.3
摘要:
在中试湿壁吸收塔中实验研究了氟络合物对石灰石湿法烟气脱硫特性的影响。实验结果表明 ,F-离子会与从喷雾干燥脱硫副产物和石灰石溶解得到的Al 3 +反应 ,生成氟化铝络合物 (AlFX) ,该络合物吸附于石灰石颗粒的表面 ,极大地阻碍石灰石的溶解 ,甚至是在AlFX浓度非常低的时候。氟化铝络合物导致石膏产物中残余CaCO3 含量的增加和石膏颗粒粒径变小。吸收浆液中F-和Al3+离子浓度的增加会增强对脱硫特性的负面影响。化学平衡模型的计算结果表明 ,吸收浆液的 pH控制在 5 .5以上能分解AlFX ,从而预防其对石灰石溶解的阻碍。
Abstract:
T he ef fect of f luoride complex es on the performance of w et limestone flue gas desulfurization (WFGD) w as invest ig ated in a pilot-scale wetted-w all column. The experimental results showed that F - reacted w ith Al 3+ dissolved from the residual product of spray dry scrubber and limestone to form aluminum/ f luoride complexes ( AlFX ) , w hich w as absorbed on the surface of limestone part icles and ext remely inhibited their dissolut ion even w hen the concent rat ion of AlFX w as very low in the liquid phase. T he complexes led to the increase of residual CaCO3 in the g ypsum product , and decreased the part icle diameter of g ypsum crystal. T he neg at ive inf luence on WFGD w as increased w ith increasing the concent rat ion of F- and Al 3+ in the slurry. T he equilibrium model calculat ions showed that AlFX can be decomposed by cont ro-l ling the slurry pH above 5. 5, thereby prevent ing inhibit ion of limestone dissolut ion.

参考文献/References:

1 Farmer W R, Jar vis J B, Moser R. Effects of aluminum/ fluor ide chemistry in wet limestone flue gas desulfur ization. Chem Eng Comm, 1989, 77( 1) : 135~ 154
2 Mori T, Matsuda S, Nakajima F, et al. Effect of Al3+ and F- on desulfur ization reaction in the limestone slurr y scrubbing pro cess. Ind Eng Chem Pr ocess Des Dev, 1981, 20( 1) : 144~ 147
3 钟秦. 湿法烟气脱硫的理论和实验研究( iv ) 湿壁塔脱硫反应系统及操作特性. 南京理工大学学报, 1998, 22( 6) : 517~ 520
4 钟秦. 湿法烟气脱硫的理论和实验研究( Ò   ) 工艺实验和脱硫模型的验证. 南京理工大学学报, 1999, 23( 2) : 157~ 161
5 钟秦. 亚硫酸钙非均相氧化动力学的研究. 南京理工大学学报, 2000, 24( 2) : 173~ 177
6 Ukaw a N, Okino S, Iwaki T . The effects of fluo ride complex es in wet limestone flue gas desulfurization. J of Chem Eng of Japan, 1992, 25( 2) : 146~ 151

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备注/Memo

备注/Memo:
江苏省高校“青蓝工程”资助项目;国家留学基金回国科研资助项目
钟 秦 男 37 岁 教授
更新日期/Last Update: 2013-03-25