Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2018-01-05 Cooperative journals: 《工程热物理学报》
Abstract:本文设计并搭建了增压液幕床压力监测实验系统,通过调节增压液幕床中的气液流速以及工作压力等参数对增压液幕床中的流动特性进行研究并重点对压差脉动特性及阻力系数变化规律进行分析。通过结合实验数据及理论分析,得出压差脉动强度及阻力系数在不同气液流速和工作压力下的变化规律,并结合烟气脱硫气液吸收反应的原理对最优工作参数进行分析。该研究可为增压液幕床气液反应系统的工业化应用提供重要的设计参考。
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2018-01-02 Cooperative journals: 《工程热物理学报》
Abstract:大气中水蒸气会影响气溶胶颗粒的生长演化动力学特性,从而改变其环境效应。当前,对包含有机组分气溶胶颗粒与水相互作用机理的认识还很局限。本文建立了纯有机气溶胶和有机-无机混合气溶胶颗粒水溶特性研究分子动力学模型,分别模拟了不同温度条件下不同卤化钠盐(NaI/NaCl/NaF)对丙二酸(C3H4O4)团簇水溶特性的影响情况。重点分析了各影响因素作用下团簇结构和气粒界面特性。结果表明,温度升高,C3H4O4-H2O 团簇相继出现分层结构和混合结构。加入40 个卤化钠分子后,水分子对初始团簇溶解程度的排序为40 NaF < 40 NaCl < 0 NaX < 40 NaI,且差异随着温度的升高而变大。高温(T=300K)时,各种团簇的表面均包含C3H4O4分子和H2O 分子,且C3H4O4分子的疏水基朝向气相一侧。
Subjects: Dynamic and Electric Engineering >> Engineering Thermophysics submitted time 2017-11-07 Cooperative journals: 《工程热物理学报》
Abstract: The experimental monitoring system of pressurized-liquid-screen bed was designed and set in this paper. The flow characteristics were studied especially the analysis of differential pressure pulse characteristics and friction factors variation by the way of adjusting gas flow, liquid flow and operation pressure parameters. According to the analysis of comparing experiment data and theory, the variation principle of pressure pulse intensity and friction factors under different gas flow, liquid flow and operation pressure was revealed as well as the optimal operation parameter was analyzed through combining the principle of fume desulfurization gas-liquid interactive reaction. This paper provides the crucial design references to the industrial application of pressurized-liquid-screen gas-liquid reaction system.