The desulfurization by seawater and mineral carbonation have been paid more and more attention. In this study, the feasibility of magnesia and seawater for the integrated disposal of SO₂ and CO₂ in the simulated flue gas was investigated. The process was conducted by adding MgO in seawater to reinforce the absorption of SO₂ and facilitate the mineralization of CO₂ by calcium ions. The influences of various factors, including digestion time of magnesia, reaction temperature, and salinity were also investigated. The results show that the reaction temperature can effectively improve the carbonation reaction. After combing SO₂ removal process with mineral carbonation, Ca²⁺ removal rate has a certain degree of decrease. The best carbonation condition is to use 1.5 times artificial seawater (the concentrations of reagents are 1.5 times of seawater) at 80°C and without digestion of magnesia. The desulfurization rate is close to 100% under any condition investigated, indicating that the seawater has a sufficient desulfurization capacity with adding magnesia. This work has demonstrated that a combination of the absorption of SO₂ with the absorption and mineralization of CO₂ is feasible.

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海水脱硫和矿物碳酸化已受到越来越多的关注。在这项研究中，研究了氧化镁和海水在模拟烟气中综合处理SO ₂和CO ₂的可行性。该过程是通过在海水中添加MgO来增强SO ₂的吸收并促进钙离子使CO ₂矿化。还研究了氧化镁的消化时间，反应温度和盐度等各种因素的影响。结果表明，反应温度可以有效地改善碳酸化反应。将SO ₂去除工艺与矿物碳酸化结合后，Ca ²⁺去除率有一定程度的下降。最佳的碳酸化条件是在80°C下使用1.5倍的人造海水（试剂的浓度是1.5倍的海水），并且不消化氧化镁。在任何调查条件下，脱硫率均接近100％，表明海水中添加氧化镁具有足够的脱硫能力。这项工作表明，将SO ₂的吸收与CO ₂的吸收和矿化相结合是可行的。

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