Catalytic reforming of natural gas for hydrogen production in a pilot fluidized-bed membrane reactor: Mapping of operating and feed conditions

Mahecha‐Botero, Andrés; Boyd, Tony; Gulamhusein, Ali; Grace, John R.; Lim, C. Jim; Shirasaki, Yoshinori; Kurokawa, Hiromi; Yasuda, Isamu

doi:10.1016/j.ijhydene.2011.05.178

Cited by 25 publications

(5 citation statements)

References 13 publications

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“…Hydrogen permeate purity was up to 99.994%, with an H 2 /CH 4 yield of 3.03 with the full membrane and under steam reforming conditions. A cumulative reforming time of 395 h was reached (Mahecha-Botero et al, 2011). Also, the results confirmed the ability of the reactor to use different natural gases containing up to 9.9 mol% of non-methane hydrocarbons.…”

Section: Steam Reforming With Membranessupporting

confidence: 67%

Hydrogen production by steam reforming of natural gas and other nonrenewable feedstocks

García

2015

Compendium of Hydrogen Energy

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Section: Steam Reforming With Membranessupporting

confidence: 67%

Hydrogen production by steam reforming of natural gas and other nonrenewable feedstocks

García

2015

Compendium of Hydrogen Energy

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“…Nowadays, palladium-based membranes are considered a promising option for hydrogen separation in industrial hydrogen production and in pre-combustion carbon dioxide capture (Metz et al, 2005;Gallucci et al, 2007;Lu et al, 2007;Ockwig and Nenoff, 2007;Basile et al, 2008). With improved stability and permeance figures, testing of palladium-based membranes has evolved to bench scale and even larger scales (Patil et al, 2007;Shirasaki et al, 2009;Li et al, 2010Li et al, , 2011Li et al, , 2012de Falco et al, 2011;Mahecha-Botero et al, 2011). These tests provide information on membrane performance, but intrinsic membrane characteristics need to be distinguished from module characteristics for a correct * Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Modelling and systematic experimental investigation of mass transfer in supported palladium-based membrane separators

Boon

Pieterse

Dijkstra

et al. 2012

International Journal of Greenhouse Gas Control

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a b s t r a c tHydrogen separation with palladium-based membranes is considered as a promising technology for precombustion CO 2 capture as well as for industrial hydrogen production. With improvements in membrane permeance, resistances to mass transfer are becoming increasingly important. In this work, a systematic approach is followed in order to discern and account for different contributions to the overall mass transfer resistance, based on a combined experimental and modelling approach. Experiments have been performed that started with pure H 2 feed, without sweep, subsequently followed by introducing N 2 on the feed side, and N 2 sweep gas. Using a phenomenological description for the palladium layer and the dusty gas model for the membrane support, coupled to a 2D Navier-Stokes solver with a convection-diffusion equation to account for possible concentration polarisation, all relevant mass transfer resistances are adequately modelled. For the conditions investigated, the main resistances to mass transfer are concentration polarisation in the retentate, hydrogen permeation through the metallic palladium layer, and a diffusional resistance in the support layer.

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“…Rakib et al 21,22 conducted steam reforming experiments with heptane and propane as feedstocks in a fluidized-bed membrane reactor (FBMR) at pressures of 0.4−0.6 MPa. Hydrogen purities exceeding 99.99% were obtained by Mahecha-Botero et al 23,24 through membrane separation, with two different natural gas feedstocks. Steam reforming in FBMRs has also been studied based on different reactor models, including an equilibrium model, 19,25 kinetic two-phase model 26,27 and a comprehensive kinetic model.…”

Section: Introductionmentioning

confidence: 98%

Hydrogen Production in a Sorption-Enhanced Fluidized-Bed Membrane Reactor: Operating Parameter Investigation

Chen

Mahecha‐Botero²,

Lim

et al. 2014

Ind. Eng. Chem. Res.

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Sorption-enhanced steam reforming, assisted by membrane separation of H2 in a fluidized bed reactor, is simulated numerically based on a kinetic two-phase model. A residence time distribution function method is implemented to account for CO2 capture in continuous operation. The effects of operating pressure, total gas feed rate, solid recycle rate, fresh sorbent feed rate, effective membrane area, and permeate pressure on the performance of a continuous fluidized bed reactor are investigated. A CH4 conversion of >91% for operation at 0.6 MPa and 550 °C is predicted to be possible with the assistance of the sorbent and membranes. The reforming performance is very sensitive to the effective surface area of membranes. A sorbent fraction of >0.7 (by mass) is necessary to achieve a product with H2 selectivity of >98%, free of CO and CO2, for realistic membrane effectiveness factors. Adding fresh sorbent or increasing the sorbent mass fraction improves the H2 productivity for a moderate solids recycling rate. Effective CO2 capture rate depends greatly on the sorbent feed rate.

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Catalytic reforming of natural gas for hydrogen production in a pilot fluidized-bed membrane reactor: Mapping of operating and feed conditions

Cited by 25 publications

References 13 publications

Hydrogen production by steam reforming of natural gas and other nonrenewable feedstocks

Hydrogen production by steam reforming of natural gas and other nonrenewable feedstocks

Modelling and systematic experimental investigation of mass transfer in supported palladium-based membrane separators

Hydrogen Production in a Sorption-Enhanced Fluidized-Bed Membrane Reactor: Operating Parameter Investigation

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