Reversible operation of a pressurized solid oxide cell stack using carbonaceous gases

Jensen, Søren Højgaard; Langnickel, Hendrik; Hintzen, N.; Chen, Ming; Sun, Xiufu; Butera, Giacomo; Clausen, Lasse Røngaard

doi:10.1016/j.est.2019.02.003

Cited by 26 publications

(26 citation statements)

References 29 publications

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“…Very few papers have been published on the theoretical potential of these systems and even fewer experimental studies have been published. State of the art within experimental studies includes the paper by Jensen et al [1] showing that internal methanation occurs at 19 bar when operating an SOEC stack at 700 °C on CO 2 and H 2 O. The methane content in the exit gas was measured to 18 vol% (dry) at a specific operating point, which was close to what chemical equilibrium predicted.…”

Section: Introductionsupporting

confidence: 58%

High efficiency SNG production from biomass and electricity by integrating gasification with pressurized solid oxide electrolysis cells

Clausen

Butera

Jensen

2019

Energy

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Section: Introductionsupporting

confidence: 58%

High efficiency SNG production from biomass and electricity by integrating gasification with pressurized solid oxide electrolysis cells

Clausen

Butera

Jensen

2019

Energy

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“…A relatively large body of literature work is available on SOEC cathodes for hydrogen or CO, or more recently on syngas production; however, very limited experimentation has been carried out on the in situ synthesis of hydrocarbons where the cathode needs to play an additional role of synthetic catalyst to promote reactions such as methanation. Lately, researchers have started investigating in situ methane synthesis in SOECs in a single reactor (Jensen et al, 2003;Bierschenk et al, 2011;Xie et al, 2011;Li et al, 2013;Chen et al, 2014;Chen et al, 2017;Lei et al, 2017;Jensen et al, 2019;Luo et al, 2020) with only CO 2 and steam as feedstock ( Figure 6) employing either mode 3 or 4 as described in this section. Xie et al (2011) were one of the first to perform in situ methanation using a composite of lanthanum-doped strontium titanate (La 0.2 Sr 0.8 TiO 3+δ , commonly LST) and GDC as cathode on YSZ electrolyte and LSM/YSZ composite anode.…”

Section: State Of the Art Of Purely Electrochemical In Situ Methane Smentioning

confidence: 99%

A Review on Synthesis of Methane as a Pathway for Renewable Energy Storage With a Focus on Solid Oxide Electrolytic Cell-Based Processes

et al. 2020

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Environmental issues related to global warming are constantly pushing the fossil fuelbased energy sector toward an efficient and economically viable utilization of renewable energy. However, challenges related to renewable energy call for alternative routes of its conversion to fuels and chemicals by an emerging Power-to-X approach. Methane is one such high-valued fuel that can be produced through renewables-powered electrolytic routes. Such routes employ alkaline electrolyzers, proton exchange membrane electrolyzers, and solid oxide electrolyzers, commonly known as solid oxide electrolysis cells (SOECs). SOECs have the potential to utilize the waste heat generated from exothermic methanation reactions to reduce the expensive electrical energy input required for electrolysis. A further advantage of an SOEC lies in its capacity to coelectrolyze both steam and carbon dioxide as opposed to only water, and this inherent capability of an SOEC can be harnessed for in situ synthesis of methane within a single reactor. However, the concept of in situ methanation in SOECs is still at a nascent stage and requires significant advancements in SOEC materials, particularly in developing a cathode electrocatalyst that demonstrates activity toward both steam electrolysis and methanation reactions. Equally important is the appropriate reactor design along with optimization of cell operating conditions (temperature, pressure, and applied potential). This review elucidates those developments along with research and

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“…Pressurization of both gasifier and SOC could be highly feasible for large-scale systems, and would reduce the syngas and would reduce the consumption of power for syngas compression. Pressurized gasification is typically assumed for large-scale systems (Clausen, 2015;Larson et al, 2009) and is commercially used by coal gasifiers, but pressurized SOC operation is rarely assumed, and only few pressurized SOC experiments have been performed (Jensen et al, , 2017.…”

Section: Pressurization and Internal Methanation In Solid Oxide Cellsmentioning

confidence: 99%

“…If the biofuel produced is methane, there is an additional benefit of SOC pressurization, as it is possible to have internal methanation inside a state-of-the-art SOC if carbonaceous gasses are supplied to the SOC (Butera et al, 2019;Jensen et al, 2015Jensen et al, , 2017. This can be achieved by sending humidified syngas to the SOC (Fig.…”

Section: Pressurization and Internal Methanation In Solid Oxide Cellsmentioning

confidence: 99%

Biomass gasification for bioenergy

Puig-Arnavat¹,

Thomsen²,

Sárossy³

et al. 2020

Burleigh Dodds Series in Agricultural Science

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Thermal gasification is a very relevant technological platform to assess in relation to production of carbonnegative bioenergy from plant materials as it offers high feed and product flexibility combined with highenergy efficiency. Many different biomass feedstock and organic secondary resources can be converted into a wide variety of products such as heat, electricity, chemicals, transport fuels and high-value ash and char products. The platform is undergoing fast development, and industry and academia work together to optimize the process performance, increase fuel and product flexibility as well as combine different technologies to increase the efficiency, economic viability and product yield and value. This chapter provides insight on the versatility and potential benefits of biomass gasification and the related biobased products. General key issues of gasification plant designs are discussed, and a series of new concepts and solutions within process integration schemes, polygeneration strategies and biochar uses are described.

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Reversible operation of a pressurized solid oxide cell stack using carbonaceous gases

Cited by 26 publications

References 29 publications

High efficiency SNG production from biomass and electricity by integrating gasification with pressurized solid oxide electrolysis cells

High efficiency SNG production from biomass and electricity by integrating gasification with pressurized solid oxide electrolysis cells

A Review on Synthesis of Methane as a Pathway for Renewable Energy Storage With a Focus on Solid Oxide Electrolytic Cell-Based Processes

Biomass gasification for bioenergy

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