含碱工业废弃物固硫反应动力学特性研究  

Study on Desulfurization Kinetic Characteristics of Alkaline Industrial Wastes

作　　者：赵改菊[1] 尹凤交[1] 李选友[1] 路春美[2] 

机构地区：[1]山东省科学院工业节能研究中心,山东济南250103 [2]山东大学能源与动力学院,山东济南250061

出　　处：《锅炉技术》2011年第6期74-78,共5页Boiler Technology

基　　金：山东省自然科学基金资助项目(Y2003F07)

摘　　要：利用等效粒子模型对含碱工业废弃物固硫反应过程进行表征,分析化学成分和微观结构对其动力学特性的影响,探讨其脱硫机理。结果表明,白泥、电石渣中的SiO2、Al2O3、较大的比表面和比孔容积及较小的晶体粒度可使气体在孔内的和产物层及表面反应的相对阻力减小,反应速率常数及产物层扩散系数增大,具有较好的脱硫活性。Desulfurization kinetic characteristics of alkaline industrial wastes were calculated and explained according to grain model,calcined sample microstructure were made clear by Mercury Intrusion Porosimeter respectively and SEM,influence of microstructure and chemical composition on their dynamics were analyzed,desulfurization mechanism were discussed.It can be found that compared alkali industrial waste to limestone,alkaline industrial waste possess more SiO2 and Al2O3,bigger specific surface area,bigger specific pore volume and smaller crystal size,which can reduce relative resistances of hole,production layer and surface reaction of gas,and enlarge chemical reaction rate constant k and production layer diffusion coefficient DS.So they have good desulfurization activity.

关 键 词：含碱工业废弃物 固硫 反应动力学 

分 类 号：X705[环境科学与工程—环境工程]