摘要
吸附法可适用于各种浓度范围VOCs的治理。本文采用实验和数值的方法研究了活性炭吸附苯过程工艺参数。首先采用实验方法得到了一种工况下的穿透时间,然后基于多孔介质模型和组分输运模型建立U型管内活性炭吸附苯过程三维数学模型。数值计算得到的穿透时间和实验结果对比误差为1.41%,证明数学模型可靠。另外,本文对模型进行了网格无关性验证。最后,采用该数学模型研究了入口速度、入口苯质量分数和多孔介质孔隙率对穿透时间、吸附过程最高温度和U型管内温度分布等参数的影响规律。
Adsorption method can be applied in the treatment of various concentrations of VOCs. This paper studies the process parameters of activated carbon adsorption process of benzene by experimental and numerical methods. First- ly certain penetration time is obtained by experimental method and then the three -dimensional mathematical model of U - type tube activated carbon benzene adsorption is built based on porous media model and component transport model. The error of penetration time between numerical simulation result and experimental result was 1.41%, showing that the mathematical model is reliable. In addition, the model was testified by grid independence. Finally, the effects of inlet velocity, the benzene mass fraction and porosity of porous medium on the breakthrough time, maximum temperature of the adsorption process and U- type tube temperature distribution parameters were presented.
出处
《工业安全与环保》
北大核心
2017年第11期76-79,88,共5页
Industrial Safety and Environmental Protection
基金
北京市自然科学基金(3164042
KZ201410017019)
北京市"实培计划"(BIPT-SPBYSJ201514)
关键词
活性炭
吸附
数值模拟
苯
activated carbon
adsorption
numerical simulation
benzene
