Carbon dioxide capture and regeneration with amine/alcohol/water blends

Abstract Non-aqueous low boiling chemicals have been considered as potential solvents for amines in post-combustion carbon dioxide capture by chemical absorption. In this study, a set of simplified experiments was devised to evaluate the overall capture and regeneration performances of five absorbents, including a 7 m monoethanolamine solution, a piperazine/diethylenetriamine/water solution, a piperazine/diethylenetriamine/diethylene glycol/water blend, a piperazine/diethylenetriamine/methanol/water blend, and a piperazine/diethylenetriamine/methanol solution. Among the five absorbents, the blend that used methanol and water as the solvent achieved a high absorption efficiency, a high desorption efficiency, and a low regeneration energy penalty. In addition, this blend did not suffer the problems of piperazine crystal formation in absorbents at low temperatures or precipitation in carbon dioxide rich solutions. The results showed that low boiling solvents could be used to reduce the regeneration energy penalty, and that efficient regeneration at a low temperature was possible. Analysis indicated that the critical factor for evaluating regeneration energy penalty was the specific solvent loss, which was defined as the amount of accompanying solvent loss per unit of carbon dioxide removed during regeneration.

[1]  M. Peruzzini,et al.  Efficient CO2 absorption and low temperature desorption with non-aqueous solvents based on 2-amino-2-methyl-1-propanol (AMP) , 2013 .

[2]  Gary T. Rochelle,et al.  Amine Scrubbing for CO2 Capture , 2009, Science.

[3]  F. Barzagli,et al.  Efficient CO2 capture by non-aqueous 2-amino-2-methyl-1-propanol (AMP) and low temperature solvent regeneration , 2013 .

[4]  S. Freguia,et al.  Research Results for CO2 Capture from Flue Gas by Aqueous Absorption/Stripping , 2002 .

[5]  Chung-Sung Tan,et al.  Removal of CO2 from indoor air by alkanolamine in a rotating packed bed , 2011 .

[6]  David J. Heldebrant,et al.  Organic liquid CO2 capture agents with high gravimetric CO2 capacity , 2008 .

[7]  Gary T. Rochelle,et al.  Carbon dioxide capture with concentrated, aqueous piperazine , 2009 .

[8]  Abass A. Olajire,et al.  CO2 capture and separation technologies for end-of-pipe applications – A review , 2010 .

[9]  J. Smith,et al.  Introduction to chemical engineering thermodynamics , 1949 .

[10]  Ivo Leito,et al.  Performance of single-component CO2-binding organic liquids (CO2BOLs) for post combustion CO2 capture , 2011 .

[11]  Meng-Hui Li,et al.  Equilibrium solubility of carbon dioxide in aqueous solutions of (diethylenetriamine + piperazine) , 2013 .

[12]  Zhong-yang Luo,et al.  Selection of Blended Solvents for CO2 Absorption from Coal-Fired Flue Gas. Part 1: Monoethanolamine (MEA)-Based Solvents , 2012 .

[13]  Sybil P. Parker,et al.  McGraw-Hill dictionary of scientific and technical terms , 1976 .

[14]  Chung-Sung Tan,et al.  Thermal regeneration of alkanolamine solutions in a rotating packed bed , 2013 .

[15]  Meng-Hui Li,et al.  Equilibrium solubility of carbon dioxide in the amine solvent system of (triethanolamine + piperazine + water) , 2010 .

[16]  W. V. Steele,et al.  Thermodynamic Properties and Ideal-Gas Enthalpies of Formation for Dicyclohexyl Sulfide, Diethylenetriamine, Di-n-octyl Sulfide, Dimethyl Carbonate, Piperazine, Hexachloroprop-1-ene, Tetrakis(dimethylamino)ethylene, N,N‘-Bis-(2-hydroxyethyl)ethylenediamine, and 1,2,4-Triazolo[1,5-a]pyrimidine , 1997 .

[17]  Timothy E. Fout,et al.  Advances in CO2 capture technology—The U.S. Department of Energy's Carbon Sequestration Program ☆ , 2008 .

[18]  Chung-Sung Tan,et al.  CO2 capture by alkanolamine solutions containing diethylenetriamine and piperazine in a rotating packed bed , 2012 .

[19]  Charles A. Eckert,et al.  Green chemistry: Reversible nonpolar-to-polar solvent , 2005, Nature.

[20]  CO2 and climatic change: An overview of the science , 1993 .

[21]  L. Hepler,et al.  Molar heat capacities of alkanolamines from 299.1 to 397.8 K Group additivity and molecular connectivity analyses , 1997 .

[22]  C. Eckert,et al.  Switchable Solvents Consisting of Amidine/Alcohol or Guanidine/Alcohol Mixtures , 2008 .

[23]  Meng-Hui Li,et al.  Equilibrium solubility of carbon dioxide in (2-amino-2-methyl-1-propanol + piperazine + water) , 2010 .

[24]  Fernando G. Martins,et al.  Recent developments on carbon capture and storage: An overview , 2011 .