微生物烟气脱硫的生物膜系统动力学模型研究

为了研究生物滴滤塔净化废气中SO2的脱硫机制,文中应用Deep-Biofilm理论和微生物生长动力学方程Monod建立了生物膜脱硫系统的扩散-反应动力学模型,并结合平推流模型对整体塔器的脱硫过程进行了模拟。应用Matlab计算机编程语言对空塔停留时间、进口SO2质量浓度、填料比表面积、递增式进气和稳定式进气等因素对脱硫率的影响进行了数值模拟。与实验结果比较后发现模拟值和实验值吻合良好、日趋重合,证明了该模型的合理性,实现了微生物烟气脱硫技术实际脱除过程的模拟研究。

Biofilm system kinetics of microbial desulfurization from flue gas

In order to study the flue gas desulfurization mechanism in a biotrickling-filter,the whole desulfurization system was simulated based on the diffusion-reaction model and the plug-flow model.The diffusion-reaction model was described by using the Deep-Biofilm theory and the Monod kinetic equation.The effects of empty tower residence time,SO2 inlet mass concentration,the specific surface area of packings,incremental gas intake and steady gas intake on the SO2 removal efficiency were numerically simulated by Matlab.It shows that an excellent agreement is achieved between the model predictions and experimental data,which proves the rationality of the model and provides a simulation for the practical process of microbial desulfurization from flue gas.