Multiple Sulfidation/Regeneration Cycle Tests for Advanced Fuel Conversion Process by 20 wt%Fe2O3/Al2O3 Sorbent

0431438 - ÚCHP 2015 CZ eng C - Conference Paper (international conference)
Huang, C.Y. - Chyou, Y.P. - Svoboda, Karel
Multiple Sulfidation/Regeneration Cycle Tests for Advanced Fuel Conversion Process by 20 wt%Fe2O3/Al2O3 Sorbent.
Final program. Prague: Orgit, 2014, s. 78. ISBN 978-80-02-02555-9.
[International Congress of Chemical and Process Engineering /21./ - CHISA 2014 and Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction /17./ - PRES 2014. Prague (CZ), 23.08.2014-27.08.2014]
R&D Projects: GA ČR GA14-09692J
Grant - others:NSC(TW) 103-2923-E-042A-001-MY3
Institutional support: RVO:67985858
Keywords : fixed-bed reactor * sorbent * silfidation reaction
Subject RIV: CI - Industrial Chemistry, Chemical Engineering

In this study, 20 wt%Fe2O3/Al2O3 was used as a sorbent to perform multiple sulfidation/regeneration cycle tests in a fixed-bed reactor under simulated hot syngas conditions. The physical properties of sorbents were analyzed by X-ray diffraction (XRD), inductively coupled plasma atomic emission spectrometry (ICP-AES), BET, and SEM/EDS. ICP-AES results indicated that the composition of metal oxide was close to the theoretical value. Multiple sulfidation/regeneration cycle tests showed that the 20wt%Fe2O3/Al2O3 can be regenerated and thus reused after the oxidation process. Due to the sulfidation reaction, colour change of the 20 wt%Fe2O3/Al2O3 sorbent was observed, from the original red to black. After six sulfidation-regeneration cycles, the sulfur capacity of the sixth cycle remained approximately on a level of 68% of the sulfur capacity in the first cycle. The BET analysis showed that the surface area decreased as the cycle number increased. The sulfidation-regeneration cycles were coupled with endothermic-exothermic reactions, which probably caused sintering of the sorbent, decreasing its surface area and sulfur capacity.
Permanent Link: http://hdl.handle.net/11104/0236029