中文摘要：

应用一步法烟气浸锰-脱硫的新工艺，考察烟气流量、烟气SO2浓度、吸收时间、液固比及浸出时间等工艺参数对烟气氧化脱硫效果的影响，并运用溶液化学原理，对SO2及Mn^2＋在溶液中的组分进行了计算，研究Mn^2＋液相催化氧化烟气脱硫的机理．在吸收液pH值5-6时，锰主要以Mn^2＋形态存在，Mn^2＋的存在强化了从HSO3^-开始发生的SO2氧化反应．采用菱锰矿为原料，能有效地脱除含SO2烟气中的硫，在实现烟气脱硫的同时自动调节溶液的pH值，并可从浸出液中回收高价值的硫酸锰．在最佳的工艺条件下，仅一步吸收过程，取得了锰浸出率85％，含SO2烟气脱硫率70％以上的效果．

英文摘要：

In this paper, a novel one step process for simultaneous manganese leaching-desulphurization of flue gas is presented. An investigation of the effect of process parameters included flow rate and SO2 concentration in flue gas, adsorbing time, solution to solid mass ratio, leaching time, and their impact on the oxidation and removal of SO2 from flue gas. The catalysing mechanism of manganese ions on the oxidation and SO2 removal was demonstrated by calculation of the species originating from manganese ions and SO2 in the solution according to solution chemistry. SO2 removal in the adsorbing solution took place at pH 5-6, where manganese ions dominantly occurred as Mn^2＋ , and the chain reactions for oxidation of SO2 starting from HSO3 were improved by the presence of Mn^2＋ SO2 bearing flue gas was effectively desulphurized by leaching rhodochrosite （ MnCO3 ） , with desulphurization of the flue gas and modifying the solution pH being achieved simultaneously, and MnSO4 of high economic value recovered from the leachate. 85% manganese leaching and over 70% desulphurization of the SO2-bearing flue gas were achieved with only one adsorption stage under optimum conditions.