Simulation of elevated temperature combined water gas shift and solid sorbent CO2 capture for pre-combustion applications using computational fluid dynamics

Qin Chen, Fabian Rosner, Ashok Rao, Scott Samuelsen, Michael Bonnema, Ambal Jayaraman and Gokhan Alptekin

Applied Energy, 2020, vol. 267, issue C, No S0306261920303901

Abstract: Water gas shift reaction combined with CO2 adsorption is a novel promising technology for pre-combustion CO2 capture in IGCC applications. By combining the two processes in an IGCC, reduction in plant capital cost (by eliminating the separate shift reactors) and in heat rate (by reducing their steam injection rates) may be realized. CFD modeling was employed to predict the CO2 adsorption, desorption and shift reaction rates, CO2 loading, CO2 breakthrough curve and temperature distribution within the reactor. The model was validated against experimental data. It was shown that significant increase in temperature occurs near the bottom region of the combined catalyst and sorbent mixed zone because majority of the reaction occurs over a small region where the feed syngas contacts the WGS catalyst. Injection of liquid water between beds is investigated for temperature control. CFD simulation model of the combined WGS and CO2 capture would be useful in reactor design, developing thermal management strategies to avoid the high temperature zones, and developing IGCC overall plant design as well as in assessing the plant thermo-economics.

Keywords: Water gas shift; Computational fluid dynamics; Integrated gasification combined cycle; CO2 adsorption; Solid sorbent; Pressure swing adsorption; Warm gas cleanup (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0306261920303901
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:appene:v:267:y:2020:i:c:s0306261920303901

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/405891/bibliographic
http://www.elsevier. ... 405891/bibliographic

DOI: 10.1016/j.apenergy.2020.114878

Access Statistics for this article

Applied Energy is currently edited by J. Yan

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