Modeling a novel combined solid oxide electrolysis cell (SOEC) - Biomass gasification renewable methanol production system

Ali, Shahid; Sørensen, Kim; Nielsen, Mads Pagh

doi:10.1016/j.renene.2019.12.108

Cited by 84 publications

(11 citation statements)

References 32 publications

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“…Nevertheless, this work's main goal consists of process integration and an equilibrium approach has been thus chosen to simplify the gasification modelling. Circulating fluidized bed (CFB) technology has been selected for the gasification unit, since other works in the open literature dealing with the production of synthetic fuels from biomass gasification, reported this option for large-scale application [2,23,24,38]. The overall gasification reaction scheme is quite complex with exothermal reactions (e.g., oxidation) providing the required thermal energy to endothermal ones (e.g., reforming and devolatilization), according to auto-thermal operation.…”

Section: Gasification Unitmentioning

confidence: 99%

Integration between Biomass Gasification and High-Temperature Electrolysis for Synthetic Methane Production

Vitale

Giglio²,

Lanzini

et al. 2020

SSRN Journal

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The energy system analysis of an integrated process producing synthetic natural gas (SNG) from woody biomass has been carried out. Two different process configurations have been proposed and modeled, considering the integration between biomass gasification, solid oxide electrolysis (SOEC) and catalytic reactors for methane synthesis. The two investigated process configurations differ in the size of the SOEC unit. In the first configuration, the electrolysis unit is sized to increase H 2 content in the produced syngas to satisfy the methanation reaction stoichiometric requirement. In the second configuration, electrolysis provides to the gasifier the requested amount of oxygen. For this second configuration, an additional section composed of a water gas shift (WGS) reactor and a carbon capture and sequestration (CCS) unit is required to adjust the reacting gas composition and thus to ensure the proper stoichiometry for the methanation process. The two different configurations have been compared at the same gasification condition. The gasifier has been modeled and studied to choose the gasification parameters' appropriate values, as equivalence ratio and steam-to-biomass ratio, and their impact on gasification outlet temperature and syngas composition. The whole process has been analyzed from a thermodynamic standpoint. After a thermal integration between the streams of the plant, energy efficiency has been calculated for both configurations: the first one (SOEC sized on hydrogen requirement) presented an efficiency of 71.7 %, while the second one (SOEC sized on oxygen requirement) showed an efficiency of 66.8 %.

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Section: Gasification Unitmentioning

confidence: 99%

Integration between Biomass Gasification and High-Temperature Electrolysis for Synthetic Methane Production

Vitale

Giglio²,

Lanzini

et al. 2020

SSRN Journal

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“…It is very useful for the industry and our society to produce methanol from renewable energy using CO 2 as a raw material. In addition, when the captured CO 2 source is biomass, it is called bio-methanol [25]. This means that methanol could also be obtained through thermochemical and biochemical conversion of biomass gasification and electrolysis [26].…”

Section: Introductionmentioning

confidence: 99%

Advances in Enhancing the Stability of Cu-Based Catalysts for Methanol Reforming

Xiao

Lai

et al. 2022

Catalysts

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The advent of fuel cells has led to a series of studies on hydrogen production. As an excellent hydrogen carrier, methanol can be used for reforming to produce hydrogen. Copper-based catalysts have been widely used in methanol reforming due to their high catalytic activity and low-cost preparation. However, copper-based catalysts have been subjected to poor stability due to spontaneous combustion, sintering, and deactivation. Thus, the research on the optimization of copper-based catalysts is of great significance. This review analyzes several major factors that affect the stability of copper-based catalysts, and then comments on the progress made in recent years to improve the catalytic stability through various methods, such as developing preparation methods, adding promoters, and optimizing supports. A large number of studies have shown that sintering and carbon deposition are the main reasons for the deactivation of copper-based catalysts. It was found that the catalysts prepared by the modified impregnation method exhibit higher catalytic activity and stability. For the promoters and supports, it was also found that the doping of metal oxides such as MgO and bimetallic oxides such as CeO2-ZrO2 as the support could present better catalytic performance for the methanol reforming reaction. It is of great significance to discover some new materials, such as copper-based spinel oxide, with a sustained-release catalytic mechanism for enhancing the stability of Cu-based catalysts. However, the interaction mechanism between the metal and the support is not fully understood, and the research of some new material copper-based catalysts in methanol reforming has not been fully studied. These are the problems to be solved in the future.

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“…Solid oxide electrochemical cells (SOCs) that can be used as fuel cells (SOFCs), , electrolysis cells (SOECs), − and membrane reactors (SO-EMRs) − are a promising alternative for more efficient ethylene production . A protonic ceramic electrochemical cell (PCEC), namely, an SOC using a proton-conducting electrolyte, has been used for power-to-chemical/fuel conversions. , Since it was first reported by Iwahara et al for steam electrolysis application, a series of perovskite proton-conducting oxides, such as doped BaCeO 3 , and BaZrO 3 , have been applied as electrolyte materials in PCECs.…”

Section: Introductionmentioning

confidence: 99%

Electrochemically Engineered, Highly Energy-Efficient Conversion of Ethane to Ethylene and Hydrogen below 550 °C in a Protonic Ceramic Electrochemical Cell

Wang

et al. 2021

ACS Catal.

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Ethylene is one of the largest building blocks in the petrochemical industry, mainly produced by steam cracking of ethane derived from naphtha or shale gas at high temperatures (>800 °C). Despite its technical maturity and economic competitiveness, the thermal steam cracking of ethane is highly energy-intensive. Herein, an electrochemically engineered direct conversion process of ethane to produce hydrogen and ethylene using a planar protonic ceramic membrane reactor with a bi-functional three-dimensional catalytic electrode is reported, with a single-pass ethane conversion of 40% and ethylene yield of 26.7% at 550 °C. Compared with the industrial ethane steam cracking, this method saves process energy input by 45.1% and improves process energy efficiency by 50.6%, based on comprehensive process simulation using Aspen Plus software. Further, steam electrolysis treatment under the solid oxide electrolysis cell mode can regenerate the system’s catalytic performance and significantly alleviate catalytic degradation by 74%, demonstrating high techno-economic viability.

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Modeling a novel combined solid oxide electrolysis cell (SOEC) - Biomass gasification renewable methanol production system

Cited by 84 publications

References 32 publications

Integration between Biomass Gasification and High-Temperature Electrolysis for Synthetic Methane Production

Integration between Biomass Gasification and High-Temperature Electrolysis for Synthetic Methane Production

Advances in Enhancing the Stability of Cu-Based Catalysts for Methanol Reforming

Electrochemically Engineered, Highly Energy-Efficient Conversion of Ethane to Ethylene and Hydrogen below 550 °C in a Protonic Ceramic Electrochemical Cell

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