壁流蜂窝式微填充床制备及变压吸附中的应用  

Fabrication of wall-flow honeycomb micro packed bed and application in pressure swing adsorption process

作　　者：曹伟波 王丽军[1] 李希[1] 

机构地区：[1]浙江大学化学工程与生物工程学院,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2017年第4期777-783,共7页Journal of Zhejiang University：Engineering Science

摘　　要：针对普通固定吸附床压降较大,吸附剂利用效率较低的问题,以壁流式蜂窝陶瓷为基础,制备新型的微填充吸附床.研究该装置的压降、流体分布等流动特性,将壁流式蜂窝陶瓷微填充吸附床应用于变压吸附脱碳过程.实验表明,壁流蜂窝式微填充床的压降极低,流体分配平均,填充层内各处的吸附负荷均匀.通过变压吸附实验研究混合气体CO2-N2体系下吸附床的动态吸附性能,考察压力、浓度和流量对穿透曲线的影响,研究吸附剂再生以及连续变压吸附操作对床层吸附容量的影响规律,实验数据与所建立的微填充床数学模型符合良好.实验和模拟结果表明,该壁流蜂窝式微填充床是一个较理想的吸附床几何构型.A novel honeycomb micro packed bed（HMPB）was fabricated by wall-flow honeycomb ceramics in order to resolve the issues of high pressure drop and low catalysts utilization efficiency in common packed adsorption bed.The flow condition and pressure drop of HMPB were investigated and the application in pressure swing adsorption（PSA）process of carbon dioxide capture were considered based on both experiments and mathematical simulation.Results showed that the pressure drop of HMPB was so low,uniform distribution of flow was realized and absorption duty was averaged.Experiments on CO2-N2 adsorption and dynamic adsoption capacity of activated carbon were conducted by usage of HMPB.Then influence of pressure,concentration and flowrate on breakthrough curves were considered to reveal the rules of adsorbent recovery and the effects of continuous absorption process on bed pressure.The experimental data agreed well with the model of micro packed bed.HMPB is an appropriate structure of packed adsorption bed and of great potential in industrial application.

关 键 词：微填充床 壁流蜂窝陶瓷 变压吸附(PSA) 二氧化碳 活性炭 

分 类 号：TQ028[化学工程]