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浙江大学学报(工学版)
J4  2013, Vol. 47 Issue (4): 662-668    DOI: 10.3785/j.issn.1008-973X.2013.04.015
    
CO2 absorption and desorption by phase transition lipophilic amine solvents
WANG Ming-xi, FANG Meng-xiang, WANG Zhen, PAN Yi-li, LUO Zhong-yang
State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China
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Abstract  

The absorption and desorption characteristics of the N, N-Dimethylcyclohexylamine (DMCA) and di-sec-butylamine (DSBA) which are activated by N-Methylcyclohexylamine (MCA) and piperazine (PZ) respectively were analyzed in order to improve the characteristics of the mixed solvents while using the auto-extractive to intensify the regeneration. CO2 absorption process was conducted in a bubble reactor by solvents contacting with mixed gas (CO2 volume fraction is 12%, N2 volume fraction is 88%) at 25 ℃. Then the rich solvents were stirred for desorption in a water bath at 80 ℃. With the overall evaluation of the absorption rate, regeneration rate and cyclic net loading, the mixed solvent DMCA15%+MCA15%、DSBA15%+MCA15% and DMCA25%+PZ5% show greater advantages in overall performance. Especially, DMCA15%+MCA15% has comparable absorption rate to the standard solvent 30% ethanolamine (MEA), and its cyclic net loading is 69% higher than the 30%MEA and cyclic net loading increases from 2.67 to 6.57 mol/kg.

Published: 01 April 2013
CLC:  TQ 028.1  
  X 511  
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Cite this article:

WANG Ming-xi, FANG Meng-xiang, WANG Zhen, PAN Yi-li, LUO Zhong-yang. CO2 absorption and desorption by phase transition lipophilic amine solvents. J4, 2013, 47(4): 662-668.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2013.04.015     OR     http://www.zjujournals.com/eng/Y2013/V47/I4/662


相变吸收剂对CO2吸收与再生特性

在N,N-二甲基环己胺（DMCA）、二仲丁胺（DSBA）2种亲脂性胺中添加N-甲基环己胺（MCA）、哌嗪（PZ）进行活化,在利用亲脂性胺再生时相变促进再生特性的同时,利用活化剂改善吸收剂综合性能.吸收剂在25 ℃、常压下用混合气（体积分数为12%的CO2,体积分数为88%的N2）进行鼓泡吸收,并将富液在80 ℃下加热搅拌再生.综合考虑吸收剂的吸收速率、再生率和循环净负荷,结果表明,DMCA15%+MCA15%、DSBA15%+MCA15%和DMCA25%+PZ5% 3种吸收剂在保持低温有效再生的同时,具有较好的吸收性能.其中DMCA15%+MCA15%具有与标准试剂30%MEA（乙醇胺）相当的吸收速率,再生率相比提高69%,循环净负荷从2.67 mol/kg提高到6.57 mol/kg.

［1］ METZ B, DAVIDSON O, CONINCK H, et al. IPCC special report on carbon dioxide capture and storage ［R］. Geneva: Intergovernmental Panel on Climate Change, 2005.

［2］ 晏水平. 膜吸收和化学吸收分离CO2特性的研究［D］. 杭州: 浙江大学, 2009: 30-39.

YAN Shui-ping. Study on CO2 separation characteristic by using membrane gas absorption and chemical absorption technology ［D］. Hangzhou: Zhejiang University, 2009: 30-39.

［3］ ALEIXO M, PRIGENT M, GIBERT A, et al. Physical and chemical properties of DMXTM solvents ［C］//10th International Conference on Greenhouse Gas Control Technologies. Amsterdam: Energy Procedia, 2011: 148-155.

［4］ RAYNAL L, ALIX P, BOUILLON P A, et al. The DMX TM process: an original solution for lowering the cost of post-combustion carbon capture ［C］//10th International Conference on Greenhouse Gas Control Technologies. Amsterdam: Energy Procedia, 2011: 779-786.

［5］ ROJEY A, CADOURS R, CARRETTE P, et al. Process for deacidification of a gas by means of an absorbent solution with fractionated regeneration by heating: WO, 2007/104856 ［P］. 2007-03-09 ［2007-09-20］.

［6］ TAN Y H. Study of CO2 absorption into thermomorphic lipophilic amine ［D］. Dortmund: TU Dortmund, 2010.

［7］ ZHANG J, AGAR D W, ZHANG X, et al. CO2: absorption in biphasic solvents with enhanced low temperature solvent regeneration ［C］//10th International Conference on Greenhouse Gas Control Technologies. Amsterdam: Energy Procedia, 2011: 67-74.

［8］ ZHANG J, MISCH R, TAN Y R. Novel thermomorphic biphasic amine solvents for CO2 absorption and low temperature extractive regeneration ［J］. Chemical Engineering and Technology, 2011, 34(9): 1481-1489.

［9］ ZHANG J, NWANI O, TAN Y, et al. Carbon dioxide absorption into biphasic amine solvent with solvent loss reduction ［J］. Chemical Engineering Research and Design, 2011, 89(8): 1190-1196.

［10］ HU L. Methods and systems for deacidizing gaseous mixtures: US 7, 718, 151 B1 ［P］. 20081013 ［2010-05-18］.

［11］ HU L. Phase transitional absorption method: US 7, 541, 011 B2 ［P］. 20060407 ［2009-06-02］.

［12］ VAIDYA P D, KENIG E Y. CO2-alkanolamine reaction kinetics: a review of recent studies ［J］. Chemical Engineering and Technology, 2007, 30(11): 1467-1474.

［13］ SARTORI G, SAVAGE D W. Sterically hindered amines for carbon dioxide removal from gases ［J］. Industrial and Engineering Chemistry Fundamentals, 1983, 22(2): 239-249.
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