1.中国科学院大连化学物理研究所,辽宁 大连 116023
2.西安工程大学环境与化学工程学院,陕西 西安 710048
刘宏臣(1989—),男,博士研究生,讲师,liuhc1108@163.com
陈光文(1967—),男,博士,研究员,gwchen@dicp.ac.cn
收稿:2019-02-22,
修回:2019-04-12,
网络首发:2026-07-24,
纸质出版:2019-07-05
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刘宏臣, 周峰, 尧超群, 陈光文. 微反应器内CO2解吸过程流动行为及气提强化[J]. 化工学报, 2019, 70(7): 2448-2455 DOI: 10.11949/0438-1157.20190142.
LIU Hongchen, ZHOU Feng, YAO Chaoqun, CHEN Guangwen. Flow behavior and stripping enhancement of CO2 desorption process in microreactor[J]. CIESC Journal, 2019, 70(7): 2448-2455 DOI: 10.11949/0438-1157.20190142.
刘宏臣, 周峰, 尧超群, 陈光文. 微反应器内CO2解吸过程流动行为及气提强化[J]. 化工学报, 2019, 70(7): 2448-2455 DOI: 10.11949/0438-1157.20190142. DOI:
LIU Hongchen, ZHOU Feng, YAO Chaoqun, CHEN Guangwen. Flow behavior and stripping enhancement of CO2 desorption process in microreactor[J]. CIESC Journal, 2019, 70(7): 2448-2455 DOI: 10.11949/0438-1157.20190142. DOI:
研究了微反应器内
N
-甲基二乙醇胺溶液解吸过程的流动和气提强化行为。观测到解吸过程中气-液两相流型主要有泡状流、弹状流、环状流和细环流。高温时,流型交替演化将导致气泡速度波动。气提促进强化CO
2
解吸过程的结果表明,低溶液流量时,少量惰性气体就可显著提高CO
2
解吸速率;大惰性气体流量将缩短停留时间,经计算解吸强化效率,确定了解吸过程的最佳气提流量。
The flow pattern and stripping enhancement of CO
2
desorption from
N
-methyldiethanolamine solution were investigated in microreactor. It is observed that the gas-liquid two-phase flow patterns in the desorption process mainly include bubble flow
slug flow
annular flow and fine circulation. However
the periodic change of flow patterns resulted in the fluctuation of bubble velocity at high temperature. According to the results of stripping enhancement on the CO
2
desorption
it showed that CO
2
desorption rate was significantly enhanced at low solution rate by adding small amount of inert gas
while excessive gas will lead to a reduction in the solution residence time. The optimal inert gas flow rate was determined by calculating the stripping enhancement per unit gas flow rate.
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