【摘要】 文章介绍了干法脱硫的气固反应机理,并分致密颗粒和多孔颗粒分别介绍了缩核模型、随机孔模型、晶粒模型和逾渗模型等单颗粒脱硫数学模型,并提出了一种晶粒模型的改进模型;分析了各个模型的优缺点以及存在的不足。文章还重点介绍了晶粒模型存在的一个缺陷,提出了晶粒初始孔隙率分布的非均匀性,分析了初始孔隙率非均匀的原因,提出了一种非均匀初始孔隙率的改进晶粒模型。更多还原

【Abstract】 The paper introduces and analyzes the gas-solid reaction principle of dry method for desulfurization, and introduces the numerical model of shrinking core model, random pore model, grain model and percolation model according to the solid particle and porous particle separately, then analyzes and compares their pros and cons. Furthermore, it emphasizes one of the cons of grain model; proposes the original uneven porosity of grain model; analyzes the reason of original uneven porosity; propose a modified grain model of original uneven porosity.更多还原