Ultra-compact microstructured methane steam reformer with integrated Palladium membrane for on-site production of pure hydrogen: Experimental demonstration

Boeltken, Tim; Wunsch, A.; Gietzelt, Thomas; Pfeifer, Peter; Dittmeyer, Roland

doi:10.1016/j.ijhydene.2014.06.091

Cited by 52 publications

(25 citation statements)

References 32 publications

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“…To solve this problem and to improve the quality of the surface, an inter-metallic diffusion barrier layer between the metallic support and the metallic selective layer is deposited. Membrane reactors for methane steam reforming have been widely studied in the literature [8][9][10] for many different reactor configurations. The integration of dense Pd-alloy membranes in steam reformers leads to much higher conversion degrees compared to conventional systems and at much lower temperatures [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Palladium based membranes and membrane reactors for hydrogen production and purification: An overview of research activities at Tecnalia and TU/e

Fernandez

Helmi

Medrano

et al. 2017

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 99%

Palladium based membranes and membrane reactors for hydrogen production and purification: An overview of research activities at Tecnalia and TU/e

Fernandez

Helmi

Medrano

et al. 2017

International Journal of Hydrogen Energy

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“…The combination of this porous ceramic catalytic reactor and a hydrogen selective palladium membrane made it possible to create an efficient hybrid membrane catalytic reactor for the simultaneous production of high purity synthesis gas and hydrogen in the processes of carbon dioxide and steam reforming of methane, ethanol, and DME [26]. The advantages of the membrane process of steam conversion of hydrocarbon feedstock studied here compared with the traditional one have been demonstrated in a great number of works, for example, [27][28][29][30][31][32]. Palladium alloys are mainly used as the membrane material.…”

Section: N нmentioning

confidence: 99%

Steam Reforming of n-Butane in Membrane Reactor with Industrial Nickel Catalyst and Foil Made of Pd-Ru Alloy

Didenko

Sementsova

Babak

et al. 2020

Membr. Membr. Technol.

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Steam reforming of n-butane has been studied in a membrane reactor at temperatures of 673-823 K, feed hourly space velocities of 1800 and 3600 h-1 , and steam/butane ratios of 3, 5 and 7. Under selected conditions, the steam conversion is accompanied by the formation of carbon deposits, whose yield decreases with increasing steam excess. However, with an increase in steam excess, its negative effect on H 2 recovery through the membrane increases. Comparative experiments with the "non-membrane" reaction at a constant steam/butane ratio equal to 5 have shown that butane conversion to the target products increases in the membrane reactor and the rate of carbon deposits formation decreases. When replacing the sweep gas by the vacuum conditions in the permeate side, there is a further decrease in the rate of carbon deposits formation and an increase in the butane conversion in the main reaction. With an increase in feed hourly space velocity from 1800 to 3600 h-1 , the rate of carbon deposits formation and its dependence on temperature increase. At an hourly space velocity of 1800 h-1 , the rate of formation of carbon deposits is two to three times lower and varies slightly with temperature. Under these conditions, the butane conversion is close to 100%; about 80% of H 2 formed is recovered from the reaction mixture, and at vacuum conditions in the permeate side, the H 2 recovery is 95%.

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“…In order to model hydrogen permeation through the membrane, we assumed a palladium‐based fully dense hydrogen perm‐selective membrane. Details of the membrane synthesis and performance characteristics can be found in Patil et al The hydrogen flux through the membrane obtained from recently validated experimental values is given by a power law expression:

J_{{normalH}_{2}} = 1.58 normalE - 07 * exp ((), - \frac{1460.2}{T}) . ((), P_{normalH 2, normalr}^{0.5} - p_{normalH 2, normals}^{0.5}) .

…”

Section: Numerical Modelmentioning

confidence: 99%

“…27,28 The equations that describe hydrogen permeation through the membrane has been developed and validated against experimental results. 28 This palladium membrane model was adopted in the present study. During operation, catalytic reforming of methane and steam takes place to produce syngas.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of a membrane‐based reformer‐combustor reactor for hydrogen generation

Sanusi

Mokheimer

2018

Int J Energy Res

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Summary Hydrogen is mostly produced in conventional steam methane reforming plants. In this work, we proposed a membrane‐based reformer‐combustor reactor (MRCR) for hydrogen generation in order to improve heat recovery and overall thermal efficiency. The proposed configuration will also reduce the complexity in existing steam methane reforming (SMR) plants. The proposed MRCR comprises combustion zone, hydrogen permeate zone, and SMR zone. A computational fluid dynamics model was developed using ANSYS‐Fluent software to simulate and analyze the performance of the proposed MRCR. Results show that high hydrogen yields were observed at high reformer pressures (RPs) and low gas hourly space velocities (GHSVs). Furthermore, by increasing the steam to methane ratio and addition of excess air in the combustion side, the hydrogen yield from the MRCR decreases. This is attributed to the reduction in the effective temperature of the hydrogen membrane. High RP, low GHSV, and low steam to methane ratio that increased the hydrogen yield also decreased carbon monoxide (CO) emissions. For an increased RP from 1 to 10 bar, the CO emission decreased by about 99%. The reduction in CO emission at high RP would be attributed to the effect of water gas shift reaction in the MRCR. Results of the extensive parametric study presented in this work can be used to determine the operating conditions based on tradeoffs between hydrogen yield (mole H2/mole CH4), hydrogen production rate (kg of H2/h), allowable CO emissions, and exhaust gas temperature for other applications such as gas turbine.

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Ultra-compact microstructured methane steam reformer with integrated Palladium membrane for on-site production of pure hydrogen: Experimental demonstration

Cited by 52 publications

References 32 publications

Palladium based membranes and membrane reactors for hydrogen production and purification: An overview of research activities at Tecnalia and TU/e

Palladium based membranes and membrane reactors for hydrogen production and purification: An overview of research activities at Tecnalia and TU/e

Steam Reforming of n-Butane in Membrane Reactor with Industrial Nickel Catalyst and Foil Made of Pd-Ru Alloy

Performance analysis of a membrane‐based reformer‐combustor reactor for hydrogen generation

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