中国电机工程学报2011，Vol.31Issue(2)：45-50,6.
氨水细喷雾吸收CO2的体积总传质系数
Volumetric Overall Mass Transfer Coefficients of CO2 Absorption Into Aqueous Ammonia of Fine Spray
摘要
Abstract
Carbon dioxide emissions has become the focus of world attention.In recent years, capture and storage of CO2 (CCS) is considered to be a potential technical on reducing CO2 emissions.As a kind of new absorbent, the ammonia solution obtains universal attention.In order to provide reference data to the future industrial design, the absorption of CO2 into aqueous ammonia had been studied in a spray tower at atmospheric pressure.The results show that the higher concentration and flow rate of the aqueous ammonia solution are beneficial to promote CO2 removal efficiency.The volumetric overall mass transfer coefficients of CO2 absorption into aqueous ammonia were measured.It was found that the performance of the spray column varies with the tested process parameters, including ammonia concentration, liquid flow rate,gas flow rate, CO2 concentration in inlet gas and temperature.Experimental results show that the volumetric overall mass transfer coefficients decreases slightly when increasing CO2 inlet concentration.The volumetric overall mass transfer coefficients increases remarkably with the ammonia concentration and also increases with the gas flow rate and liquid flow rate.It was also found that the temperature affects the volumetric overall mass transfer coefficients.When the temperature in the spray tower is lower than 40 ℃, the volumetric overall mass transfer coefficients increases with the temperature.Whereas, when the temperature in the spray tower is higher than 40 ℃, the volumetric overall mass transfer coefficients decreases with the increasing temperature.关键词
二氧化碳/氨水/喷雾/体积总传质系数分类
资源环境引用本文复制引用
曾庆,郭印诚,牛振褀,林文漪..氨水细喷雾吸收CO2的体积总传质系数[J].中国电机工程学报,2011,31(2):45-50,6.基金项目
北京市科委科技计划课题(Z08040902950803). （Z08040902950803）
