Study of MgO-based dry regenerable sorbent for sorption enhanced water gas shift reaction

Dong-Hyeok Choi, Joong Beom Lee, Tae Hyoung Eom, Jeom In Baek, Seong Jegarl and Chong Kul Ryu

Renewable Energy, 2013, vol. 54, issue C, 144-149

Abstract: CO2 sorption capacities and physical properties of the MgO-based sorbent, and the effect of steam during the sorbent regeneration were studied. Four MgO-based dry regenerable sorbents (P-A ∼ D) were prepared by spray drying method for the application to pre-combustion CO2 capture. Physical properties of the sorbents were measured by standard ASTM methods. MgO-based sorbents satisfied with most of the physical requirements for commercial fluidized-bed process. All sorbents had a spherical shape and an average size of 106 ± 10 μm. Most of the attrition index (AI) of the sorbents except for P-D was below 12%, which was superior, compared to commercial fluidized catalytic cracking (FCC) catalysts. CO2 sorption capacities were evaluated by multi-cycle test in a high pressure bubbling fluidized-bed reactor at 473 K and 20 bar with 37% CO2. The sorption capacities of the sorbents showed 3.3–14.5 wt% during 3 cycle. Particularly, P-A showed a high CO2 sorption capacity of more than 14 wt%. In this study, CO2 sorption capacity of steam-treated sorbent was higher than non-treated sorbent. This result can be explained by the presence of Mg(OH)2 formed by hydroxylation by MgO and increasing surface area of steam-treated sorbent.

Keywords: Integrated gasification combined cycle (IGCC); Sorption enhanced water gas shift (SEWGS); Pre-combustion; CO2 capture; Sorbent; MgO (search for similar items in EconPapers)
Date: 2013
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148112005149
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:54:y:2013:i:c:p:144-149

DOI: 10.1016/j.renene.2012.08.044

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().