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Efficient capture of carbon dioxide with novel mass‐transfer intensification device using ionic liquids
Author(s) -
Zhang LiangLiang,
Wang JieXin,
Liu ZhiPing,
Lu Ying,
Chu GuangWen,
Wang WenChuan,
Chen JianFeng
Publication year - 2013
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.14072
Subject(s) - mass transfer , ionic liquid , chemistry , packed bed , absorption (acoustics) , carbon dioxide , volatility (finance) , chemical engineering , ammonium , chromatography , organic chemistry , materials science , catalysis , financial economics , engineering , economics , composite material
A novel mass‐transfer intensified approach for CO 2 capture with ionic liquids (ILs) using rotating packed bed (RPB) reactor was presented. This new approach combined the advantages of RPB as a high mass‐transfer intensification device for viscous system and IL as a novel, environmentally benign CO 2 capture media with high thermal stability and extremely low volatility. Amino‐functionalized IL (2‐hydroxyethyl)‐trimethyl‐ammonium (S)−2‐pyrrolidinecarboxylic acid salt ([Choline][Pro]) was synthesized to perform experimental examination of CO 2 capture by chemical absorption. In RPB, it took only 0.2 s to reach 0.2 mol CO 2 /mol IL at 293 K, indicating that RPB was kinetically favorable to absorption of CO 2 in IL because of its efficient mass‐transfer intensification. The effects of operation parameters on CO 2 removal efficiency and IL absorbent capacity were studied. In addition, a model based on penetration theory was proposed to explore the mechanism of gas–liquid mass transfer of ILs system in RPB. © 2013 American Institute of Chemical Engineers AIChE J , 59: 2957–2965, 2013
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