Gas–Liquid Mass Transfer Characteristics in a Gas–Liquid–Solid Bubble Column under Elevated Pressure and Temperature  

在压力和温度提升条件下气液固泡罩塔内气液传质特点(英文)

作　　者：靳海波 杨索和 何广湘 刘德林 佟泽民 朱建华 

机构地区：[1]Department of Chemical Engineering,Beijing Institute of Petrochemical Technology [2]Faculty of Chemical Science and Engineering,China University of Petroleum

出　　处：《Chinese Journal of Chemical Engineering》2014年第9期955-961,共7页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(20776018);the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions(CIT&TCD20130325)

摘　　要：abstract The volumetric mass transfer coefficient kLa of gases （H2, CO, CO2） and mass transfer coefficient kL on liquid par-affin side were studied using the dynamic absorption method in slurry bubble column reactors under elevated temperature and elevated pressure. Meanwhile, gas-holdup and gas-liquid interfacial area a were obtained. The effects of temperature, pressure, superficial gas velocity and solid concentration on the mass transfer coeffi-cient were discussed. Experimental results show that the gas-liquid volumetric mass transfer coefficient kLa and interfacial area a increased with the increase of pressure, temperature, and superficial gas velocity, and decreased with the slurry concentration. The mass transfer coefficient kL increased with increasing superficial gas velocity and temperature and decreased with higher slurry concentration, while it changed slightly with pressure. Ac-cording to analysis of experimental data, an empirical correlation is obtained to calculate the values of kLa for H2 （CO, CO2） in the gas-paraffin-quartz system in a bubble column under elevated temperature and elevated pressure.The volumetric mass transfer coefficient kLa of gases(H2, CO, CO2) and mass transfer coefficient kLon liquid paraffin side were studied using the dynamic absorption method in slurry bubble column reactors under elevated temperature and elevated pressure. Meanwhile, gas-holdup and gas–liquid interfacial area a were obtained.The effects of temperature, pressure, superficial gas velocity and solid concentration on the mass transfer coefficient were discussed. Experimental results show that the gas–liquid volumetric mass transfer coefficient kLa and interfacial area a increased with the increase of pressure, temperature, and superficial gas velocity, and decreased with the slurry concentration. The mass transfer coefficient kLincreased with increasing superficial gas velocity and temperature and decreased with higher slurry concentration, while it changed slightly with pressure. According to analysis of experimental data, an empirical correlation is obtained to calculate the values of kLa for H2(CO, CO2) in the gas–paraffin–quartz system in a bubble column under elevated temperature and elevated pressure.

关 键 词：Mass transfer characteristicBubble columnElevated pressureElevated temperature 

分 类 号：TQ021.4[化学工程]