摘要
采用圆盘塔在常压、温度30~70℃、MDEA(甲基二乙醇胺)浓度1.75~4.21kmol/m3、哌嗪浓度0.041~0.21kmol/m3条件下,研究了活化MDEA吸收CO2的动力学。动力学数据证实了CO2与哌嗪之间进行着拟一级均匀[4]活化反应机理,其吸收速率可由并行拟一级快速可逆反应吸收来表示: 式中:kp=2.98×10(11)exp(-6424/T),表观活化能为53.41kJ/mol。
A disc column was used to investigate the kinetics of carbon dioxide absorption into activated MDEA solutions under atmospheric pressure,temperature of 30~70℃ and conecentration of 1. 71~4. 21 kmol/m3 for MDEA and 0. 041~0. 21 kmol/m3 for piperazine. The kinetics data demonstrated that the mechanism of pseudo-first-order homogeneous activation is conducted between CO2 and piperazine,and rate of absorption can be described by an expression of paralled two pseudofirst-order rapid reversible reaction ,that is where Kp,the apparent activation energy is 53.41KJ/mol.
出处
《高校化学工程学报》
EI
CAS
CSCD
1994年第1期55-60,共6页
Journal of Chemical Engineering of Chinese Universities
基金
国家教委博士点基金
关键词
甲基二乙醇胺
吸收
二氧化碳
Kinetics
Absorption of carbon dioxide
MDEA