Hydrogen production and geometry optimization of ethanol steam reforming combining water gas shift reaction in a crossflow membrane tube reactor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12220%2F24%3A43907346" target="_blank" >RIV/60076658:12220/24:43907346 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0360319923041551?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0360319923041551?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijhydene.2023.08.153" target="_blank" >10.1016/j.ijhydene.2023.08.153</a>

Result language

angličtina

Original language name

Hydrogen production and geometry optimization of ethanol steam reforming combining water gas shift reaction in a crossflow membrane tube reactor

Original language description

Crossflow tube reactors are a novel design showing excellent H2 production and separation potential. A membrane reactor enables H2 production and separation in the same unit and helps the reaction overcome the equilibrium conversion limitations. This work investigates the performance of ethanol steam reforming (ESR) followed by a water gas shift reaction (WGSR) for H2 production and separation. Crossflow catalytic tubes are designed in ESR and WGSR, and Pd-based membrane tubes are installed behind the WGSR to permeate H2 and enhance the chemical reaction. The effects of inlet temperature, steam-to-ethanol molar (S/E) ratio, and reaction pressure on the system performance are investigated. The results showed that a higher inlet temperature lowers H2 yield, and 600 degrees C is the most suitable temperature for this system. The S/E ratio at 3 leads to the highest H2 recovery. Higher S/E ratios may increase ethanol conversion but result in more steam in the reactor, lowering the H2 partial pressure and recovery. Two-stage design optimization is performed for the WGSR catalytic membrane tubes. In the first stage with parametric sweep, the H2 yield and recovery are improved by 1.25% and 22.27%, respectively. In the second stage via the Nelder-Mead method, the H2 yield and recovery are further improved by 6.79% and 18.76%, respectively. The two-stage optimization in total intensifies 8.8% H2 yield and 45.22% H2 recovery. A comparison between ESR + WGSR/without membrane and ESR + WGSR + membrane with optimization suggests the H2 yield is substantially lifted by 22.26%, and only 0.34 times catalyst is applied in the system. The results show that an optimized crossflow membrane reactor has excellent prospects for effective hydrogen generation and separation. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Hydrogen Energy

ISSN

0360-3199

e-ISSN

1879-3487

Volume of the periodical

51

Issue of the periodical within the volume

2. 1. 2024

Country of publishing house

GB - UNITED KINGDOM

Number of pages

17

Pages from-to

637-653

UT code for WoS article

001139733800001

EID of the result in the Scopus database

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