二氧化硫在脫鈣后海水體系中的溶解平衡
[Abstract]:Compared with standard seawater, CO2 decalcified seawater has less Ca2 and more HCO _ 3-. theoretically, HCO _ 3- can react with hydrogen sulfite radical produced by SO2 solution in water and promote the dissolution of SO2. In this paper, using N2 as inert carrier gas, the solubility of so _ 2 in seawater with the increase of Na _ (HCO3) content in standard seawater and the decrease of Ca ~ (2 +) in seawater was studied under 1atm. In order to realize the coupling of CO2 decalcification and flue gas desulfurization. The results show that the solubility of SO2 in standard seawater decreases significantly with the increase of temperature, and the value of SO2 solubility is approximately linear with the temperature, and the increase of HCO 3-content in seawater will increase the solubility of SO2 in this water system. However, the decrease of Ca ~ (2 +) in seawater had no significant effect on the solubility of SO2 in this water system. Compared with the standard seawater system, the CO2 decalcified seawater system has better solubility to SO2, which provides theoretical support and basic data for flue gas desulfurization by using CO2 decalcified seawater and realizing the coupling of seawater decalcification and flue gas desulfurization.
【作者單位】: 河北工業(yè)大學(xué)海洋科學(xué)與工程學(xué)院;
【基金】:國家“十二五”科技支撐計(jì)劃(2015BAB09B00) 國家自然科學(xué)基金(21306037) 天津市自然科學(xué)基金(13JCQNJC05600;14JCYBJC20700) 河北省高層次人才資助項(xiàng)目(C2013003041)
【分類號(hào)】:P746;X701.3
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