Flow pattern and CO2 absorption in a falling film reactor with mixed aqueous solution of ionic liquid and MEA

被引：22

作者：

Zhang, Fangfang ^{[2
]}

Guo, Liheng ^{[2
]}

Ding, Yudong ^{[1
,2
]}

Zhu, Xun ^{[1
,2
]}

Liao, Qiang ^{[1
,2
]}

机构：

[1] Chongqing Univ, Minist Educ, Key Lab Low Grade Energy Utilizat Technol & Syst, Chongqing 400030, Peoples R China

[2] Chongqing Univ, Inst Engn Thermophys, Chongqing 400030, Peoples R China

来源：

APPLIED THERMAL ENGINEERING | 2018年 / 138卷

基金：

国家杰出青年科学基金; 中国国家自然科学基金;

关键词：

Flow pattern; CO2; absorption; Falling film; Ionic liquid; MEA; CARBON-DIOXIDE ABSORPTION; INTERFACIAL MASS-TRANSFER; KINETICS; CAPTURE;

D O I：

10.1016/j.applthermaleng.2018.04.041

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This work dealt with the effect of counter-current gas flow on the flow pattern transitions and CO2 absorption with the mixed aqueous solution of ionic liquid and MEA. The falling film was observed to take the form of "corner rivulet flow (denoted as CRF)", "falling film flow with dry patches (denoted as FDP)" or "complete falling film flow (denoted as FFP)". The flow patterns are significantly different between the cases of increasing the liquid flow rate gradually and decreasing the liquid flow rate gradually. The critical flow rate enlarged due to the increasing gas flow rate. The absorption rate R-A increased with increasing liquid flow rate under the flow patterns of CRF and FDP. The utilization rate reached a peak at the critical liquid flow rate Q(CRF,CFF-FDP). Liquid mass transfer coefficient decreased with the increasing liquid flow rate under the flow patterns of CRF and FDP.

引用

页码：583 / 590

页数：8

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