Modelling of high purity H 2 production via sorption enhanced chemical looping steam reforming of methane in a packed bed reactor

Abstract

This is a repository copy of Modelling of high purity H2 production via sorption enhanced chemical looping steam reforming of methane in a packed bed reactor.

Modelling of H2 production via sorption enhanced steam methane reforming at reduced pressures for small scale applications

“…This model accounts for the mass and energy transfer in both gas and solid phase. The assumptions used in this model are the same as used in our previous work [28,29]. In the present work, different amount of catalyst and sorbent are assumed, but the size of the particles (dp) is the same.…”

110th Anniversary: Carbon Dioxide and Chemical Looping: Current Research Trends

“…One drawback of this process is that the resulting CO 2 is diluted with (oxygen-depleted) air. The overall reaction then corresponds with eq . In summary, this process combines chemical looping combustion (eqs and ) with steam re-forming (eq ), water–gas shift reaction (eq ), and chemical looping carbon dioxide capture (eqs and ). Following this patent, much effort has been put into studying this processlater termed sorption enhanced chemical looping re-forming experimentally. − In 2010, Abanades and co-workers proposed a variant of this process (Figure ) to overcome the drawback of CO 2 dilution . As a first step, they propose sorption enhanced steam re-forming using a (promoted) copper catalyst (eqs –).…”

Modeling of Laboratory Steam Methane Reforming and CO2 Methanation Reactors

“…Indeed, from a review of the models developed in the literature for methanation reactors [6] and for SMR reactors [7][8][9], it emerges that pseudo-homogeneous models with isothermal temperature profiles are often employed for the simulation of laboratory reactors, with the purpose of identifying the correct kinetic model and/or the kinetic parameters of the selected kinetic model. On the other hand, more detailed heterogeneous models with thorough evaluation of 1D or 2D concentration and temperature profiles inside the individual catalyst particles, and in the solid and gas phase along the full-size reactor, are employed for a large scale industrial reactor design and deployment [6,[10][11][12][13][14][15][16]. In this work, a model is proposed for a laboratory scale reactor, where the hypothesis of pseudo-homogeneous behavior is retained (due to the small size of the catalyst particles), but thermal effects along the reactor are analyzed in more detail by including the local energy balance.…”