喷雾塔中氨水吸收CO_2的速率  

The absorption rates of CO_2 by aqueous ammonia solution in a spray column

作　　者：曾庆[1] 郭印诚[1] 牛振褀 林文漪[1] 

机构地区：[1]清华大学航天航空学院工程力学系,北京100084

出　　处：《环境科学学报》2011年第2期381-387,共7页Acta Scientiae Circumstantiae

基　　金：北京市科委科技计划课题(No.Z08040902950803)~~

摘　　要：为考察氨水细喷雾吸收CO2的能力,对喷雾塔中氨水细喷雾吸收CO2的反应过程进行了实验研究,测定了氨水吸收CO2的速率.实验结果表明,CO2的吸收速率随着氨水浓度、气体流量的升高而明显增大,随氨水流量升高也有所增加,CO2的吸收速率随CO2进口浓度的升高呈线性增加.当喷雾塔中温度低于40℃时,CO2的吸收速率随着塔内温度的升高而增加,当温度超过40℃时,CO2的吸收速率开始下降.实验结果表明,氨水吸收CO2的速率与CO2的浓度呈线性变化规律,即对CO2呈一级反应.The absorption of CO2 into aqueous ammonia was studied in a spray column at atmospheric pressure. The specific flux per unit volume of CO2 absorption into aqueous ammonia was measured. Experimental results show that the absorption rate of CO2 increases remarkably with the ammonia concentration and the gas flow rate. The absorption rate of CO2 increases linearly with the CO2 inlet concentration. The experimental results also show that the temperature affects the absorption rate of CO2. When the temperature in the spray tower is lower than 40℃,the absorption rate increases with temperature,whereas when the temperature in the spray tower is higher than 40℃,the absorption rate decreases with increasing temperature.

关 键 词：CO2 氨水 喷雾 吸收 吸收速率 

分 类 号：X701[环境科学与工程—环境工程]