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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:

2013年04期

Page:

35-

Research Field:

Publishing date:

Info

Title:

Characteristics of Cyclic Calcination/Carbonation Reaction of Ca-based Absorbent

Author(s):

Zhao Shilin; Liu Hao; Xia Wen; Wu Hao; Yang Hongmin

School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210042,China

Keywords:

Ca-based sorbent; cyclic reactive characteristics; conversion rate

PACS:

TQ534.9

DOI:

-

Abstract:

Aiming at the effects of cycle number,absorbent particle size,CO₂ concentration in calcinations,carbonation atmosphere and water vapour concentration on characteristics of cyclic calcination/carbonation reaction of Ca-based absorbent,they are investigated experimentally on a lab-scale setup.The results show that the carbonation conversion of Ca-based absorbent decreases from 72% to 30% after 10 cycles in the calcination/carbonation reaction.The small particle size can improve the carbonation conversion of absorbent.The increase of CO₂ concentration in carbonation atmosphere can restrain the decrease of conversion rate in carbonation process.The increase of CO₂ concentration in calcination atmosphere can accelerate the decrease of the conversion rate in carbonation conversion process,which results in the decrease of cycle performance for CO₂ capture.Water vapour reduces the energy barrier of the diffusion across the solid production,which prolongs carbonation reaction time and increases conversion rate.

References:

[1] Herzog H,Drakes E M.Carbon dioxide and disposal from large energy system[J].Annu Rev Energy Environ,1996,21:145-166.
[2]MacKenzie A,Granatstein D L,Anthony E J,et al.Economics of CO₂ capture using the calcium cycle with a pressurized fluidized bed combustor[J].Energy and Fuels,2007,21(2):4787-4795.
[3]李英杰.钙基吸收剂循环煅烧碳酸化反应捕集CO₂研究[D].南京:东南大学能源与环境学院,2009.
Li Yingjie.Research on cyclic calcination/carbonation reaction with ca-based sorbents to CO₂ Capture[D].Nanjing:School of Energy and Environment,Southeast University,2009.(in Chinese)
[4]Abanades J C.The maximum capture efficiency of CO₂ using a carbonation/calcination cycle of CaO/CaCO₃[J].Chem Eng J,2002,90(3):303-306.
[5]Chrissafis K,Dagounaki C,Paraskevopoulos K M.The effects of procedural variables on the maximum capture efficiency of CO₂ using a carbonation/calcination cycle of carbonate rocks[J].Thermochimica Acta,2005,428(1-2):193-198.
[6]Sun P,Grace C J,Anthony E J.Simultaneous CO₂ and SO₂ capture at fluidized bed combustion temperatures[C]//Proc of 18th Fluidized Bed Combustion,Toronto,Canada,2005.
[7]Adanez J,Diego L E,Garcia-Labiano E.Calcination of calcium acetate and calcium magnesium acetate:effect of the reacting atmosphere[J].Fuel,1999,78(5):583-592.
[8]Borgwardt R H.Calcium oxide sintering in atmospheres containing water and carbon dioxide[J].Ind Eng Chem Res,1989,28(4):493-500.
[9]Abanades J C,Alvarez D.Conversion limits in the reaction of CO₂ with Lime[J].Energy Fuels,2003,17(2):308-315.
[10]Mess D,Sarofim A F,Longwell J P.Product layer diffusion during the reaction of calcium oxide with carbon dioxide[J].Energy and Fuels,1999,13(5):999-1055.
[11]李英杰,赵长遂.基于钙基吸收剂的循环煅烧/碳酸化反应吸收CO₂的试验研究[J].动力工程,2008,28(1):117-121.
Li Yingjie,Zhao Changsui.Experimental study based on calcium-based absorbent cyclic reaction(CCR)for CO₂-capture[J].Journal of Power Engineering,2008,28(1):117-121.(in Chinese)
[12]Stewart M C,Manovic V,Anthony E J,et al.Enhancement of indirect sulphation of limestone by steam addition[J].Environmental Science and Technology,2010,44(22):8781-8786.

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Last Update: 2013-12-30