Sorption-Enhanced Hydrogen Production

J.W. Dijkstra, D. Jansen, R.W. van den Brink, Sorption-enhanced hydrogen production for pre-combustion C02 capture thermodynamic analysis and experimental results, Int. J. Greenhouse Gas Control. Vol. 1 (2007) 170-179. 

Ochoa-Fernandez, E., Rusten, H.K., Jakobsen, H.A., R0nning, M., Holmen, A., and Chen, D. Sorption enhanced hydrogen production by steam methane reforming using Ii2Zr03 as sorbent Sorption kinetics and reactor simulation. Catalysis Today, 2005, 106 (1—4), 41. 

Kwang, B.Y. and Harrison, D.P. Low-pressure sorption-enhanced hydrogen production. Industrial Engineering Chemistry Research, 2005, 44 (6), 1665. 

Cobden, P.D., Van Beurden, R, Reijers, H.T.J. et al. (2007) Sorption enhanced hydrogen production for pre-combustion CO2 capture Thermodynamic analysis and experimental results. International Journal of Greenhouse Gas Control, 1,170-179. 

Harrison, D. (2008) Sorption-enhanced hydrogen production A review. Industrial Engineering Chemistry Research, 47, 6486-6501. 

Hufton, J. et al., Sorption enhanced reaction process for the production of hydrogen, Proc. U.S. DOE Hydrogen Prog. Rev., Herndon, VA, 179,1997. 

Hufton, J.R., S. Mayorga, and S. Sircar, Sorption-enhanced reaction process for hydrogen production, AIChE., 45(2), 248-255, 1999. 

Ortiz, A.L. and D.P. Harrison, Hydrogen production using sorption-enhanced reaction, Ind. Eng. Chem. Res., 40, 5102-5109,2001. 

Waldron, W.E., J.R. Hufton, and S. Sircar, Production of hydrogen by cyclic sorption enhanced reaction process, AIChE., 47(6), 1477-1479, 2001. 

Below, we first briefly describe conventional hydrogen production. Then the combination of hydrogen production and CCS is described. Finally, we elaborate on two of the technologies for more efficient hydrogen production with C02 capture that are currently in the R D phase hydrogen membrane reactors and C02 sorption enhanced reactors. 

For combined hydrogen production and C02 capture several novel technologies are in development, most of them for the application in a pre-combustion C02 capture combined cycle. The main focus is to reduce the efficiency penalties and other associated costs of CO2 capture. The most important technologies in the R D phase, membrane reactors and sorption-enhanced reactors, are described below, with special attention paid to the catalytic aspects. 

Sorption-Enhanced Reaction Process for Production of Hydrogen Air Products... 

S. G. Mayorga, J. R. Hufton, S. Sircar, et ah, Sorption enhanced reaction process for production of hydrogen -Phase 1, final report, U.S. dept, of energy DE-FC36-95G010059, 1997. 

SER [Sorption Enhanced Reaction] A modification of the steam reforming process for making hydrogen, in which a selective adsorbent removes the carbon dioxide, thereby reducing the temperature required from 800 to 1000°C to 500 to 800°C Developed by Air Products and Chemicals Ltd. in 1998. 

Wu, S., Beum, T.H., Yang, J.I., and Kim, J.N. The characteristics of a sorption-enhanced steam-methane reaction for the production of hydrogen using C02 Sorbent. Chinese Journal of Chemical Engineering, 2005, 13 (1), 43. 

Tokyo Tech also conducted a conceptual design study on a long-life multipurpose small-size fast reactor with a medium-temperature hydrogen production system using the sorption-enhanced steam-methane reforming reaction [9],... 

A fixed bed reactor for production of hydrogen by sorption enhanced steam methane reforming (SE-SMR) using Li2Zr03 as C02-acceptor was investigated by Rusten et al [11] ... 

Ochoa-Eernandez E, Haugen G, Zhao T, Rpnning M, Aartun 1, Bprresen B, Rytter E, Rpnnekleiv M, Chen D (2006) Evaluation of potential co2 acceptors for application in hydrogen production by sorption enhanced steam reforming. Am Chem Soc, Div Fuel Chem 51 598-599... 

In recent years, new concepts to produce hydrogen by methane SR have been proposed to improve the performance in terms of capital costs reducing with respect to the conventional process. In particular, different forms of in situ hydrogen separation, coupled to reaction system, have been studied to improve reactant conversion and/or product selectivity by shifting of thermodynamic positions of reversible reactions towards a more favourable equilibrium of the overall reaction under conventional conditions, even at lower temperatures. Several membrane reactors have been investigated for methane SR in particular based on thin palladium membranes [14]. More recently, the sorption-enhanced steam methane reforming (Se-SMR) has been proposed as innovative method able to separate CO2 in situ by addition of selective sorbents and simultaneously enhance the reforming reaction [15]. 

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