化工进展2016，Vol.35Issue(4)：1012-1016,5.DOI:10.16085/j.issn.1000-6613.2016.04.007
二氧化硫在脱钙后海水体系中的溶解平衡
Solubility equilibrium of SO2 in the decalcified seawater
摘要
Abstract
Compared with normal seawater,the content of HCO3− in the seawater of calcium removed using CO2 is higher. Because HCO3− can react with hydrogen sulfite produced by sulfur dioxide dissolving in water,which in return helps increase the solubility of sulfur dioxide. Therefore,the effect of the amount of HCO3− and Ca2+ on the solubility of sulfur dioxide in seawater was studied at temperatures of 34.0—63.9℃ with N2 as inert carrier gas and under 1atm. The results showed that the solubility of SO2 in standard seawater significantly reduced linearly with increasing temperature. The increase of HCO3− ion concentration in demineralized seawater will enhance the solubility of SO2 in water. But there is no significant effect of the reduction of Ca2+ ion concentration on the SO2solubility within the studied scope. It can be concluded that sulfur dioxide shows a better dissolution performance in the seawater decalcified by CO2 than in the standard seawater,and this study provides a theoretical support to the coupling of flue gas desulfurization and seawater decalcification using CO2.关键词
脱钙海水/溶解性能/二氧化硫Key words
decalcified seawater/solubility/sulfur dioxide分类
化学化工引用本文复制引用
谢英惠,曹海楠,赵颖颖,袁俊生..二氧化硫在脱钙后海水体系中的溶解平衡[J].化工进展,2016,35(4):1012-1016,5.基金项目
国家“十二五”科技支撑计划（2015BAB09B00）、国家自然科学基金（21306037）、天津市自然科学基金（13JCQNJC05600、14JCYBJC20700）及河北省高层次人才资助项目（C2013003041）。 （）
