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Reduction and Decomposition Characteristics of CaSO4 Based Oxygen Carrier Particles
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 Title & Authors
Reduction and Decomposition Characteristics of CaSO4 Based Oxygen Carrier Particles
RYU, HOJUNG; KIM, HANA; LEE, DONGHO; JIN, GYOUNGTAE; BAEK, JEOMIN;
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 Abstract
As a candidate for cheap oxygen carrier, based oxygen carriers have been developing. However, research on reaction characteristics and side reaction of based oxygen carrier is very limited. There are many possible reactions for main components of syngas from coal. In this study, we prepared three based oxygen carriers (-/bentonite, -/bentonite, -CaO/bentonite) and performed reduction tests by hydrogen. Cyclic reduction-oxidation tests up to cycle are also conducted using hydrogen as fuel. Reduction reactivity of those based oxygen carriers were compared with that of NiO based oxygen carrier (OCN703-1100). Real weight change fractions of based oxygen carriers were higher than theoretical oxyen transfer capacity and reactivity of these particles decreased with the number of cycle increased. To check possible side reaction of based oxygen carriers, decomposition tests were carried out and was detected even at . Consequently, we could conclude that based oxygen carriers decompose and release and this reaction lead reactivity decay of based oxygen carries.
 Keywords
CLC;Oxygen carrier particle;Reduction;Decompostion;;
 Language
Korean
 Cited by
1.
Conceptual Design and Feasibility Study on 0.5 MWth Pressurized Chemical Looping Combustor, Transactions of the Korean hydrogen and new energy society, 2016, 27, 2, 201  crossref(new windwow)
 References
1.
H. J. Ryu, "$CO_2-NOx$ Free Chemical-looping Combustion Technology", KOSEN report, http://www.kosen21.org, 2003.

2.
H. J. Ryu, S. S. Park, J. H. Moon, W. K. Choi, and Y. W. Rhee, "Effects of Temperature, Pressure, and Gas Residence Time on Methane Combustion Characteristics of Oxygen Carrier Particle in a Pressurized Fluidized bed Reactor", Trans. of the Korean Society of Hydrogen Energy, Vol. 23, No. 2, 2012, pp. 173-182. crossref(new window)

3.
H. J. Ryu, and G. T. Jin, "Criteria for Selection of Metal Component in Oxygen Carrier Particles for Chemical-looping Combustor", Korean Chem. Eng. Res., Vol. 42, No. 5, 2004, pp. 588-597.

4.
Y. Liu, Q. Guo, Y. Cheng, and H. J. Ryu, "Reaction Mechanism of Coal Chemical Looping Process for Syngas Production with $CaSO_4$ Oxygen Carrier in the $CO_2$ Atmosphere", Industrial & Engineering Chemistry Research, Vol. 51, 2012, pp. 10364-10373. crossref(new window)

5.
M. Zheng, L. Shen, and J. Xiao, "Reduction of $CaSO_4$ Oxygen Carrier with Coal in Chemical Looping Combustion : Effects of Temperature and Gasification Intermediate", International Journal of Greenhouse Gas Control, Vol. 4, 2010, pp. 716-728. crossref(new window)

6.
Q. Guo, Y. Cheng, Y. Liu, W. Jia, and H. J. Ryu, "Coal Chemical Looping Gasification for Syngas Generation Using an Iron-Based Oxygen Carrier", Industral & Engineering Chemistry Research, Vol. 53, 2014, pp. 78-86. crossref(new window)

7.
Y. Liu, W. Jia, Q. Guo, and H. J. Ryu, "Effect of Gasifying Medium on the Coal Chemical Looping Gasification with $CaSO_4$ as Oxygen Carrier", Chin. J. Chem. Eng, 2014.

8.
M. Zheng, L. Shen, and X. Feng, "In situ Gasification Chemical Looping Combustion of a Coal Using the Binary Oxygen Carrier Natural Anhydrite Ore and Natural Iron Ore", Energy Conversion and Management, Vol. 83, 2014, pp. 270-283. crossref(new window)

9.
H. Guo, X. Hu, Y. Liu, W. Jia, M. Yang, M. Wu, H. Tian, and H. J. Ryu, "Coal Chemical -looping Gasification of Ca-based Oxygen Carriers Decorated by CaO", Powder Technology, Vol. 275, 2015, pp. 60-68. crossref(new window)

10.
S. Zhang, R. Xiao, J. and L. S. Bhattacharya, "Performance of $Fe_2O_3/CaSO_4$ Composite Oxygen Carrier on Inhibition of Sulfur Release in Calciumbased Chemical Looping Combustion", International Journal of Greenhouse Gas Control, Vol. 17, 2013, pp. 1-12. crossref(new window)

11.
H. J. Ryu, C. W. Lee, D. H. Lee, D. H. Bae, S. Y. Lee, and Y. S. Park, "Direct Combustion Characteristics of Coal by Oxygen Carrier", Trans. of the Korean Society of Hydrogen Energy, Vol. 25, No. 1, 2014, pp. 87-96. crossref(new window)

12.
K. S. Kim, "Natural Gas Combustion Characteristics of Oxygen Carrier Particles in a Batch Fluidized Bed Reactor", Master Thesis, Daejeon University, Supervised by Yeong-Seong Park, Byun-Uk Bae and Ho-Jung Ryu, 2010, pp. 1-100.

13.
H. J. Ryu, K. S. Kim, S. Y. Lee, Y. S. Park, and M. H. Park, "Reduction Characteristics of Mass Produced Particle for Chemical Looping Combustor with Different Fuels", Trans. of the Korean Society of Hydrogen Energy, Vol. 19, No. 4, 2008, pp. 348-358.