Cyclic adsorption characteristic of CaO/MgO and CaO/Ca9Al6O18 for simultaneous CO2/SO2 capture

GUO Ming-n?; ZHANG Li; TANG Qiang; BO Feng; YANG Zhong-qing

Volume 40 Issue 06

Jun. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(06): 757-762

GUO Ming-n?, ZHANG Li, TANG Qiang, BO Feng, YANG Zhong-qing. Cyclic adsorption characteristic of CaO/MgO and CaO/Ca9Al6O18 for simultaneous CO2/SO2 capture[J]. Journal of Fuel Chemistry and Technology, 2012, 40(06): 757-762.

Citation:

GUO Ming-n?, ZHANG Li, TANG Qiang, BO Feng, YANG Zhong-qing. Cyclic adsorption characteristic of CaO/MgO and CaO/Ca₉Al₆O₁₈ for simultaneous CO₂/SO₂ capture[J]. Journal of Fuel Chemistry and Technology, 2012, 40(06): 757-762.

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Cyclic adsorption characteristic of CaO/MgO and CaO/Ca₉Al₆O₁₈ for simultaneous CO₂/SO₂ capture

GUO Ming-n?^1,2,
ZHANG Li^{1,2
,},
TANG Qiang^1,2,
BO Feng³,
YANG Zhong-qing^1,2

1.
Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education of PRC, Chongqing University, Chongqing 400044, China;
2.
College of Power Engineering, Chongqing University, Chongqing 400044, China;
3.
The University of Queensland, St Lucia, Qld 4072, Australia

Received Date: 2011-09-13
Rev Recd Date: 2011-11-26
Publish Date: 2012-06-30

Abstract

Abstract

Four sorbents were prepared with CaO/MgO or CaO/Ca₉Al₆O₁₈ that was produced from precursors of calcium D-gluconate monohydrate, magnesium D-gluconate hydrate and aluminum L-lactate hydrate with a simple wet mixing method. The effects of sorbent type, mass proportioning, SO₂ concentration and calcination temperature on the adsorption capability of sorbent were studied. The results show that CaO/MgO( weight ratio 75%/25%)keeps the best CO₂ capture capability, while CaO/CaO/Ca₉Al₆O₁₈(weight ratio 75%/25%)keeps the best cyclic stability. The CO₂ capture process is drastically affected by SO₂. The CO₂ capture capacity drops quickly when the SO₂ concentration increases. However, the cumulative SO₂ capture capacity increases at the same time. The total calcium utilization rises tenderly after many cycles, which becomes more obvious with increasing the SO₂ concentration. The effect of calcination temperature on the adsorption characteristic of CaO/MgO and CaO/CaO/Ca₉Al₆O₁₈ differs little.
- Ca-based sorbents,
- SO₂,
- CO₂,
- simultaneous capture,
- conversion

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References(16)

References

闻霞, 孙楠楠, 李碧, 李军平, 王峰, 赵宁, 肖福魁, 魏伟, 孙予罕, 任泽厚, 郭金刚, 王志杰, 李庆, 吴志斌. MgO/Al₂O₃ 吸附剂对CO₂动态吸附性能的研究[J]. 燃料化学学报, 2010, 38(2) : 247-251. (WEN Xia, SUN Nan-nan, LIBi, LI Jun-ping, WANG Feng, ZHAO Ning, XIAO Fu-kui1, WEI Wei, SUN Yun-han, REN Ze-hou, GUO Jin-gang, WANG Zhi-jie, LI Qing, WU Zhi-bin. Dynamic adsorption study of CO₂ adsorption by MgO/Al₂O₃[J]. Journal of Fuel Chemistry and Technology, 2010, 38(2) : 247-251.)

FENG B, LIU W, LI X, AN H. Overcoming the problem of calcium oxide in CO₂ Capture[J]. Energy Fuels, 2006, 20(6): 2417-2420

CHEN Z, SONG H S, PORTILLO M, LIM C J, GRACEJ R, ANTHONY E J. Long-term calcination/carbonation cycling thermal pretreatment for CO₂ capture by limestone and dolomite[J]. Energy Fuels, 2009, 23(3): 1437–1444.

BAKER R. The reactivity of calcium oxide towards carbon dioxide and its use for energy storage[J]. J Appl Chem Biotechnol, 1974, 24(4/5): 221-227.

FLORIN N H, HARRIS A T. Reactivity of CaO derived from nano-sized CaCO₃ particles through multiple CO₂ capture-and-release cycles[J]. Chem Eng Sci, 2009, 64(2): 187-191.

MARTAVALTZI C S, LEMONIDOU A A. Development of new CaO based sorbent materials for CO₂ removal at high temperature[J]. Microporous Mesoporous Mater, 2008, 110(1): 119-127.

SUN P, GRACE J R, L IM C J, ANTHONY E J. Investigation of attempts to improve cyclic CO₂ capture by sorbent hydration and modification[J]. Ind Eng Chem Res, 2008, 47(6): 2024-2032.

LI Z S, CAI N S, HUANG Y Y. Effect of reparation temperature on cyclic CO₂ capture and multiple carbonation-calcination cycles for a new Ca-based CO₂ sorbent[J]. Ind Eng Chem Res, 2006, 45(6): 1911-1917.

房凡, 李振山, 蔡宁生. 钙基CO₂吸收剂循环反应特性的试验与模拟[J]. 中国电机工程学报, 2009, 29(14): 30-35. (FANG Fan, LI Zhen-shan, CAI Ning-sheng. Experimental research and modeling of multiple carbonation/calcination cycle of Ca-based CO₂ sorbents[J]. Proceedings of the CSEE, 2009, 29(14): 30-35.

李英杰, 赵长遂, 李庆钊. 作为新型CO₂ 吸收剂的乙酸钙循环碳酸化特性[J]. 中国电机工程学报, 2008, 28(8):65-70. (LI Ying-jie, ZHAO Chang-sui, LI Qing-zhao. Cyclic carbonation characteristics of calcium acetate as a new CO₂ sorbent[J]. Proceedings of the CSEE, 2008, 28(8): 65-70.)

LI Y, ZHAO C, DUAN L, LI Q, LIANG C. CO₂ Capture using CaO modified with ethanol/water solution during cyclic calcination/carbonation[J]. Chem Eng Technol, 2008, 31(2): 237-244.

乔春珍, 肖云汉, 田文栋, 阳绍军. 钙基CO₂吸收剂的循环特性[J]. 化工学报, 2006, 57(12): 2953-2958. (QIAO Chun-zhen, XIAO Yun-han, TIAN Wen-dong, YANG Shao-jun. Repetitive calcination-carbonation capability of Ca-based CO₂ absorbent[J]. Journal of Chemical Industry and Engineering(China), 2006, 57(12): 2953-2958.)

SUN P, GRACE J R, LIM C J, ANTHONY E J. Removal of CO₂ by calcium-based sorbents in the presence of SO₂[J]. Energy Fuels, 2007, 21(1): 163-170.

SUN P, GRACE J R, LIM C J, ANTHONY E J. Sequential capture of CO₂ and SO₂ in a pressurized TGA simulating FBC conditions[J]. Environ Sci Technol, 2007, 41(8): 2943-2949.

RYU H, GRACE J R, LIM C J. Simultaneous CO₂/SO₂ capture characteristics of three limestones in a fluidized-bed reactor[J]. Energy Fuels, 2006, 20(4): 1621-1628.

LISBONA P, MARTINEZ A, LARA Y, ROMEO L M. Integration of carbonate CO₂ capture cycle and coal-fired power plants[J]. Energy Fuels, 2010, 24(1): 728-736.

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