中文摘要：

研究了T型多弯头微通道吸收CO2过程中气-液两相流以及传质特性,混合气相组成为5%(V)CO2和95%(V)N2，液相组分分别为去离子水、0.5mol.L-1氢氧化钠水溶液和0.5mol.L-1二乙醇胺水溶液。利用高速摄像系统观测了微通道内入口处以及主通道内的气-液两相流的流型，得到气液两相流的流型分布图，确定了泰勒流的操作范围，以及泰勒流下不同气液相流量操作状况下气泡长度和液弹长度。考察了不同吸收剂(去离子水，氢氧化钠水溶液和二乙醇胺水溶液)在弯曲型微通道泰勒流吸收CO2的传质行为，最终测定了微通道泰勒流吸收CO2物理和化学过程的CO2的吸收率和液相体积传质系数，并与文献中的液相体积传质系数进行分析和比较。针对物理吸收和快速化学吸收过程，分别提出了能更好预测液相体积侧传质系数的无因次经验关联式，平均偏差分别为12.4%和10.5%。

英文摘要：

Gas-liquid two-phase flow and mass transfer characteristics of CO2/N2mixture absorption in aT-junction meandering-microchannel was experimentally investigated.The gas mixture was composed of5%CO2and95%N2.The liquid absorbers were deionized water,0.5mol?L?1aqueous sodium hydroxide solution(0.5mol.L-1NaOH)and0.5mol.L-1aqueous diethanolamine solution.The flow pattern of the gas-liquidtwo-phase flow at inlet and main body was observed by a high-speed camera to determine the flow region ofTaylor flow.The bubble length and liquid slug length were obtained using Image-Pro Plus6.0software.Meanwhile,the liquid volumetric mass transfer coefficients of the three different absorbers for the Taylor flowabsorption of CO2were systematically determined and compared with the results from literature.The predictedliquid volumetric mass transfer coefficients were calculated with empirical correlations from references and theone proposed in this paper.The empirical correlation proposed in this paper show better agreement withexperimental data for physical absorption and rapid chemical absorption with average deviation of12.4%and10.5%,respectively.