Process design simulation of H2 production by sorption enhanced steam methane reforming: evaluation of potential CO2 acceptors

Esther Ochoa-Fernández; Geir Haugen; Tiejun Zhao; Magnus Rønning; Ingrid Aartun; Børre Børresen; Erling Rytter; Morten Rønnekleiv; De Chen

doi:10.1039/B614270B

Process design simulation of H₂ production by sorption enhanced steam methane reforming: evaluation of potential CO₂ acceptors†

Esther Ochoa-Fernández,^a Geir Haugen,^a Tiejun Zhao,^a Magnus Rønning,^a Ingrid Aartun,^b Børre Børresen,^b Erling Rytter,^b Morten Rønnekleiv^b and De Chen*^a

Author affiliations

* Corresponding authors

^a Department of Chemical Engineering, Norwegian University of Science and Technology, Trondheim, Norway
E-mail: chen@chemeng.ntnu.no
Fax: +47 73 59 40 80
Tel: +47 73 59 31 49

^b Statoil Research Centre, Rotvoll, Trondheim, Norway

Abstract

A concept for pure H₂ production with CO₂ capture by sorption enhanced steam methane reforming (SESMR) has been investigated. Conventional steam reforming with CO₂ capture has been used as a base case for comparison. SESMR resulted in competitive thermal efficiencies, which were highly dependent on the CO₂ acceptor material. Thus, CaO and other more novel solid acceptors such as Li₂ZrO₃, K-doped Li₂ZrO₃, Na₂ZrO₃ and Li₄SiO₄ were screened in terms of thermodynamics, kinetics and stability. It was concluded that higher H₂ yields and efficiencies can be obtained for the acceptors that have good ability for removing CO₂ at low partial pressures. The best efficiencies were obtained using CaO as acceptor due to its more favourable thermodynamics and high reaction rates; however, the stability of CaO has to be improved. On the other hand, Na₂ZrO₃ is a promising alternative due to the good kinetics for CO₂ removal and the stability.

This article is part of the themed collection: Green chemistry for fuel synthesis and processing

Article information

https://doi.org/10.1039/B614270B

Article type

Paper

Submitted

02 Oct 2006

Accepted

09 Mar 2007

First published

03 Apr 2007

Download Citation

Green Chem., 2007,9, 654-662

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Process design simulation of H₂ production by sorption enhanced steam methane reforming: evaluation of potential CO₂ acceptors

E. Ochoa-Fernández, G. Haugen, T. Zhao, M. Rønning, I. Aartun, B. Børresen, E. Rytter, M. Rønnekleiv and D. Chen, Green Chem., 2007, 9, 654 DOI: 10.1039/B614270B

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