摘要
采用交互作用正交试验设计,系统研究了进液流量、进气流量、CO2体积分数、进液温度及其交互作用对填料塔中二乙醇胺溶液吸收CO2的转化率η和气相总体积传质系数KGae的影响.经过直观分析和方差分析,评价了各参数对η和KGae影响的显著程度.实验发现进液流率、进气流率、CO2体积分数、进液温度,以及CO2体积分数与进气流率、进液温度与进液流率、进液温度与进气流率的交互作用对η影响显著;进液流率、进气流率、CO2体积分数、进液温度、CO2体积分数与进气流率的交互作用以及进液温度与进气流率的交互作用对KGae影响显著;进气流率增加,η降低而KGae增加;进液流率增加,η和KGae均增加;进气CO2体积分数增加,η和KGae均降低;进液温度升高,η和KGae均呈先增加后减小趋势.
The effects of influencing factors such as gas flow rate,liquid flow rate,CO2 volume fraction,absorption temperature and their interactions on the percent conversion η and the volumetric overall mass transfer coefficient in gas phases KGaeby diethanolamine（ DEA） aqueous solution were systematically studied by using orthogonal experimental design and statistical analysis. The impact significance of these influencing factors was estimated. It is found that gas flow rate,liquid flow rate,CO2 volume fraction,absorption temperature,the interactions between CO2 volume fraction and gas flow rate,between absorption temperature and liquid flow rate,and between absorption temperature and gas flow rate have remarkable effect on η; however,gas flow rate,liquid flow rate,CO2 volume fraction,absorption temperature,the interactions between gas flow rate and CO2 volume fraction and between gas flow rate and absorption temperature have distinguished influence on KGae. With the increment of gas flow rate,η decreases,while KGaeincreases.η and KGaeincrease as the liquid flow rate increases,but they decrease as the CO2 volume fraction increases. The impact of absorption temperature on η and KGaeis approximately parabolic.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2014年第8期1101-1107,共7页
Journal of University of Science and Technology Beijing
基金
国家高技术研究发展计划"生物天然气净化提纯关键技术研究"资助项目(2012AA101802-3)
关键词
沼气
提纯
二乙醇胺
二氧化碳
吸收
影响因素
biogas
purification
diethanolamine
carbon dioxide
absorption
influencing factors
