Improving the desulfurization performance of CaCO3 with sodium humate

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Feng, Run^1 ; Sun, Zhiguo^1 ; Zhang, Wenqing^2 ; Huang, Hao^3 ; Hu, Haihang^1 ; Zhang, Li^1 ; Xie, Hongyong^1

School of Environmental Science and Engineering, Shanghai Polytechnic University, Shanghai

201209, China^1

School of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou

450001, China^2

Shanghai Maring Diesel Engine Research Institute, Shanghai

201108, China^3

关键词: Desulfurization efficiency;    Desulphurization efficiencies;    Desulphurization process;    Instantaneous efficiencies;    Liquid flow rates;    Optimum conditions;    Optimum working conditions;    Sodium humate;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/3/032025/pdf
DOI  :  10.1088/1755-1315/121/3/032025

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The influence of these factors on desulphurization efficiency was studied by changing the amount of calcium carbonate, the concentration of sulfur dioxide, the liquid flow rate of absorbent and the air flow rate, the optimum working condition was determined by the research of limestone-gypsum desulphurization process commonly used in industry. By changing the amount of calcium carbonate, we conclude that the volume of water in the desulfurization efficiency does not increase with the adding amount of calcium carbonate. The optimum conditions were determined : at the condicion of the concentration of 500ppm of sulfur dioxide, 10g calcium carbonate, 150L/h liquid flow and the minimum air flow rate of 6.75m3/h, the highest desulfurization efficiency was close to 100% when sodium humate was not added, but the holding time was only about 5 minutes. After adding 3g of humic acid, the desulfurization efficiency was improved obviously, and the instantaneous efficiency of 100% lasting for about 40 minutes. It can be seen that, calcium carbonate in the addition of humic acid sodium can significantly improve the absorption of calcium carbonate performance of SO2.