[1] Wang Chunbo, Liu Hongcai, Chen Liang, Lufei Jia, et al. Effect of sulfation during carbonation on CO2 capturein calcium looping cycle [J]. Journal of Southeast University (English Edition), 2015, 31 (2): 215-219. [doi:10.3969/j.issn.1003-7985.2015.02.010]

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Effect of sulfation during carbonation on CO₂ capturein calcium looping cycle()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

31

Issue:

2015 2

Page:

215-219

Research Field:

Energy and Power Engineering

Publishing date:

2015-06-20

Info

Title:

Effect of sulfation during carbonation on CO₂ capturein calcium looping cycle

Author(s):

Wang Chunbo¹;  Liu Hongcai¹;  Chen Liang¹;  Lufei Jia²;  Yewen Tan²

¹School of Energy and Power Engineering, North China Electric Power University, Baoding 071003, China
²CanmetENERGY, Natural Resources Canada, 1 Haanel Drive, Ottawa, Ontario, Canada K1A 1M1

Keywords:

Ca-based sorbent;  carbonation;  sulfation;  looping;  CO₂ capture

PACS:

TK16

DOI:

10.3969/j.issn.1003-7985.2015.02.010

Abstract:

Two Canadian limestones with different properties were tested to determine the effect of SO₂ during the carbonation of sorbent on the CO₂ capture performance in Ca-looping. When the reaction gas is mixed with SO₂, the carbonation ratio of the sorbent is always lower than that without SO₂ for each cycle under the same conditions, and the sulfation ratio increases almost linearly with the increase in the cycle times. At 650 ℃, there is little difference in the carbonation ratio of the sorbent during the first four cycles for the two carbonation time, 5 and 10 min at 0.18%SO₂. The indirect sulfation reaction that occurs simultaneously with the carbonation of CaO is responsible for the degradation of the sorbent for CO₂ capture, and the carbonation duration is not the main factor that affects the ability of the sorbent. 680 ℃ is the best carbonation temperature among the three tested temperatures and the highest carbonation ratio can be obtained. Also, the sulfation ratio is the highest. The probable cause is the different effects of temperature on the carbonation rate and sulfation rate. A higher SO₂ concentration will decrease the carbonation ratio clearly, but the decrease in the carbonation capability of the sorbent is not proportional to the increase of the SO₂ concentration in flue gases.

References:

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Memo

Memo:

Biography: Wang Chunbo(1973—), male, doctor, professor, hdwchb@126.com.
Foundation items: The National Natural Science Foundation of China(No.51276064), the Natural Science Foundation of Beijing City(No.3132028).
Citation: Wang Chunbo, Liu Hongcai, Chen Liang, et al.Effect of sulfation during carbonation on CO₂ capture in calcium looping cycle[J].Journal of Southeast University(English Edition), 2015, 31(2):215-219.[doi:10.3969/j.issn.1003-7985.2015.02.010]

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