Abstract
Chemical looping combustion (CLC) is a promising technology for fossil fuel combustion with inherent CO2 capture and sequestration, which is able to mitigate greenhouse gases (GHGs) emission. In this study, to design a 0.5MWth pressurized chemical looping combustor for natural gas and syngas the effects of solid residences time on CO2 selectivity were investigated in a novel semi-continuous CLC reactor using Ni-based oxygen carrier particle. The semi-continuous chemical looping combustor was designed to simulate the fuel reactor of the continuous chemical looping combustor. It consists of an upper hopper, a screw conveyor, a fluidized bed reactor, and a lower hopper. Solid circulation rate (G s ) was controlled by adjusting the rotational speed of the screw conveyor. The measured solid circulation rate increased linearly as the rotational speed of the screw increased and showed almost the same values regardless of temperature and fluidization velocity up to 800°C and 4 U mf , respectively. The solid circulation rate required to achieve 100% CH4 conversion was varied to change G s -fuel ratio (oxygen carrier feeding rate/fuel feeding rate, kg/Nm3). The measured CO2 selectivity was greater than 98% when the Gs-fuel ratio was higher than 78 kg/Nm3.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
F. Gralla, D. J. Abson, A. P. Moller, D. J. Lang and H. von Wehrden, Renew. Sust. Energy Rev., 70, 1251 (2017).
C. T. Lee, H. Hashim, C. S. Ho, Y.V. Fan and J. J. Klemes, J. Clean. Prod., 146, 1 (2017).
J. Adanez, A. Abad, F. Garcia-Labiano, P. Gayan and L. F. de Diego, Progress in Energy and Combustion Science, 38, 215 (2012).
M. C. Tang, L. Xu and M. H. Fan, Appl. Energy, 151, 143 (2015).
A. Nandy, C. Loha, S. Gu, P. Sarkar, M. K. Karmakar and P. K. Chatterjee, Renew. Sust. Energy Rev., 59, 597 (2016).
T. N. G. Borhani, A. Azarpour, V. Akbari, S. R. W. Alwi and Z. A. Manan, Int. J. Greenh Gas Con., 41, 142 (2015).
B. Anthony and A. Hoteit, Handbook of Combustion, Wiley-VCH, 5, 517 (2010).
A. Lyngfelt, Appl. Energy, 113, 1869 (2014).
M. Ishida and H. G. Jin, Energy, 19, 415 (1994).
H. Jin, T. Okamoto and M. Ishida, Energy Fuel, 12, 1272 (1998).
M. Ishida, D. Zheng and T. Akehata, Energy, 12, 147 (1987).
C. Fu and T. Gundersen, Energy, 44, 60 (2012).
M. M. Hossain and H. I. de Lasa, Chem. Eng. Sci., 63, 4433 (2008).
J. Adanez, L. F. de Diego, F. Garcia-Labiano, P. Gayan, A. Abad and J.M. Palacios, Energy Fuel, 18, 371 (2004).
A. Abad, T. Mattisson, A. Lyngfelt and M. Johansson, Fuel, 86, 1021 (2007).
M. Tian, C. Wang, L. Li and X. Wang, AIChE J., 63, 2827 (2017).
F. Garcia-Labiano, L. F. de Diego, J. Adanez, A. Abad and P. Gayan, Ind. Eng. Chem. Res., 43, 8168 (2004).
H. J. Ryu, D. H. Bae, K. H. Han, S.Y. Lee, G.T. Jin and J. H. Choi, Korean J. Chem. Eng., 18, 831 (2001).
K. S. Go, S. R. Son and S. D. Kim, Int. J. Hydrogen Energy, 33, 5986 (2008).
S. Bhavsar, N. Isenberg, A. More and G. Veser, Appl. Energy, 168, 236 (2016).
M. Tian, X. Wang, X. Liu, A. Wang and T. Zhang, AIChE J., 62, 792 (2016).
B. S. Kwak, N.-K. Park, J.-I. Baek, H.-J. Ryu and M. Kang, Korean J. Chem. Eng., 34, 1936 (2017).
R. Naqvi and O. Bolland, Int. J. Greenh Gas Con., 1, 19 (2007).
B. Erlach, M. Schmidt and G. Tsatsaronis, Energy, 36, 3804 (2011).
F. Zerobin, S. Penthor, O. Bertsch and T. Proll, Powder Technol., 316, 569 (2017).
X. Lu, R. A. Rahman, D. Y. Lu, F. N. Ridha, M. A. Duchesne, Y. Tan and R. W. Hughes, Appl. Energy, 184, 132 (2016).
H. J. Ryu, D. H. Bae and G. T. Jin, Korean J. Chem. Eng., 20, 960 (2003).
H. J. Ryu, G. T. Jin, S. H. Jo and M. H. Park, J. Chem. Eng. Jpn., 41, 716 (2008).
H. Ryu, G. Jin, D. Bae and M. Park, Continuous Long-term Operation of Syngasfueled 50kWth Chemical-Looping Combustor, 16 (2008).
H.-J. Ryu and G.-T. Jin, Energy Eng. J., 12, 289 (2003).
H. Ryu, D. Lee, M. Jang, J. Kim and J.-I. Baek, Transactions of the Korean Hydrogen and New Energy Society, 27, 201 (2016).
J. I. Baek, C. K. Ryu, J. H. Lee, T. H. Eom, J.B. Lee, H. J. Ryu, J. Ryu and J. Yi, Fuel, 102, 106 (2012).
J. H. Goo, M. W. Seo, D. K. Park, S. D. Kim, S. H. Lee, J. G. Lee and B. H. Song, J. Chem. Eng. Jpn., 41, 686 (2008).
A. Lyngfelt and B. Leckner, Appl. Energy, 157, 475 (2015).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lee, D., Ryu, HJ., Shun, D. et al. Effect of solid residence time on CO2 selectivity in a semi-continuous chemical looping combustor. Korean J. Chem. Eng. 35, 1257–1262 (2018). https://doi.org/10.1007/s11814-018-0042-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11814-018-0042-8