摘要
从反应热力学角度分析了Fenton氧化法用于燃煤烟气同时脱硫脱硝反应正向自发进行的可行性和难易程度,为该工艺的工程应用提供理论依据。在自行设计的鼓泡反应器中,通过进行Fenton试剂同时脱硫脱硝的正交试验和影响因素研究,得到了最佳的反应条件。在对反应产物进行分析的基础上,推导出Fenton试剂同时脱硫脱硝的反应历程及总反应方程式,并利用热力学原理计算了反应的热力学参数。结果表明:Fenton反应用于燃煤烟气同时脱硫脱硝的标准反应焓变Δ_rG_m~θ<0,体系整体为放热反应,标准吉布斯函数Δ_rG_m~θ远小于-40 k J/mol,可正向自发的进行,且反应限度较深,该反应从热力学角度分析是可行的。
The reaction and its spontaneity of simultaneous desulfurization and denitrification of coal-burning flue gas by Fenton reagent were analyzed from the perspective of reaction thermodynamics. In the self-designed bubble reactor,the optimum reaction conditions of simultaneous desulfurization and denitrification were obtained by using Fenton reagent and through orthogonal experiment. Based on the analysis of reaction products,the reaction mechanism and total reaction equations of simultaneous desulfurization and denitrification by Fenton reagent were deduced. The reaction thermodynamics parameters were calculated according to thermodynamic principle. The results showed that the standard reaction enthalpy of the process was less than zero（ ΔrGm^θ〈0）,and the overall reaction of the system was exothermic. The standard Gibbs function of the reaction was far less than -40 kJ/mol. The reaction was a forward and spontaneous reaction and was relatively easy to achieve dynamic equilibrium of chemical reaction,and this indicated that the reaction was feasible from the thermodynamic aspect.
作者
温学友
赵毅
苗志加
WEN Xueyou1,2,3 ,ZHAO Yi1 , MIAO Zhijia2,3(1. College of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, Hebei , China ;2. School of Water Resources and Environment,Hebei GEO University,Shijiazhuang 050031, Hebei, China ;3. Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Shijiazhuang 050031, Hebei, Chin)
出处
《河南理工大学学报（自然科学版）》
CAS
北大核心
2018年第4期68-75,共8页
Journal of Henan Polytechnic University（Natural Science）
基金
国家重点研发计划项目(2017YFC0210603)
河北省自然科学基金青年基金资助项目(E2016403035)
