高校化学工程学报2017，Vol.31Issue(4)：784-793,10.DOI:10.3969/j.issn.1003-9015.2017.04.005
弯曲型微通道吸收CO2/N2混合气的传质性能
Mass Transfer Characteristics During CO2/N2 Mixture Absorption in a Meandering-Microchannel
摘要
Abstract
Gas-liquid two-phase flow and mass transfer characteristics of CO2/N2 mixture absorption in a T-junction meandering- microchannel was experimentally investigated. The gas mixture was composed of 5% CO2 and 95% N2. The liquid absorbers were deionized water, 0.5 mol·L-1 aqueous sodium hydroxide solution (0.5 mol·L-1 NaOH) and 0.5 mol·L-1 aqueous diethanolamine solution. The flow pattern of the gas-liquid two-phase flow at inlet and main body was observed by a high-speed camera to determine the flow region of Taylor flow. The bubble length and liquid slug length were obtained using Image-Pro Plus 6.0 software. Meanwhile, the liquid volumetric mass transfer coefficients of the three different absorbers for the Taylor flow absorption of CO2 were systematically determined and compared with the results from literature. The predicted liquid volumetric mass transfer coefficients were calculated with empirical correlations from references and the one proposed in this paper. The empirical correlation proposed in this paper show better agreement with experimental data for physical absorption and rapid chemical absorption with average deviation of 12.4% and 10.5%, respectively.关键词
微通道/气液两相流/泰勒流/传质性能/CO2吸收Key words
meandering- microchannel/two phase flow/Taylor flow/mass transfer/CO2 absorption分类
化学化工引用本文复制引用
梁倩卿,春江,王凯,马学虎,兰忠,王亚雄..弯曲型微通道吸收CO2/N2混合气的传质性能[J].高校化学工程学报,2017,31(4):784-793,10.基金项目
国家自然科学基金(21476037,51236002) （21476037,51236002）
中央高校基本科研业务费专项资(DUT15RC(3)008). （DUT15RC(3）
