Effects of shape, porosity, and operating parameters on carbon dioxide recovery in polytetrafluoroethylene membranes

被引：30

作者：

Chen, Shia-Chung ^{[2
,3
]}

Li, Su-Hsia ^{[1
]}

Chien, Rean-Der ^{[4
]}

Hsu, Ping-Shun ^{[2
]}

机构：

[1] Nanya Inst Technol, Dept Chem & Mat Engn, Chungli 32091, Taiwan

[2] Chung Yuan Christian Univ, Dept Mech Engn, Chungli 32023, Taiwan

[3] Chung Yuan Christian Univ, R&D Ctr Membrane Technol, Chungli 32023, Taiwan

[4] Nanya Inst Technol, Dept Mech Engn, Chungli 32024, Taiwan

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 179卷 / 1-3期

关键词：

Carbon dioxide absorption; Piperazine; 2-Amino-2-methyl-1-propanol; Monoethanolamine; Polytetrafluoroethylene membrane; Asymmetric membrane; Mixed absorbent; Wetting; HOLLOW-FIBER MEMBRANES; PTFE POROUS MEMBRANE; AQUEOUS-SOLUTIONS; MASS-TRANSFER; GAS STREAMS; ABSORPTION; CO2; KINETICS; REMOVAL; MONOETHANOLAMINE;

D O I：

10.1016/j.jhazmat.2010.03.057

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this study, the recovery of carbon dioxide using an absorbent composed of 2-amino-2-methyl-1-propanol (AMP) + monoethanolamine (MEA) + piperazine (PZ) in polytetrafluoroethylene (PTFE) membrane contactors was investigated. Experiments were conducted using various gas flow rates, liquid flow rates, absorbent blends, and pore size membranes. CO2 recovery increased with increasing liquid flow rates. The blended amine absorbent had a synergistic effect on CO2 recovery. CO2 recovery increased as the pore size of the PTFE membrane decreased. An asymmetric membrane had a better CO2 recovery than that of symmetric membrane. Besides, membrane mass transfer coefficient and operational stability of asymmetric membrane were enhanced. For an asymmetric membrane, the smaller pore-size side of the membrane surface contacting the liquid phase can reduce the level of wetting of the membrane. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：692 / 700

页数：9

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