Journal ArticleDOI
Production of Synthetic Natural Gas From Carbon Dioxide and Renewably Generated Hydrogen: A Techno-Economic Analysis of a Power-to-Gas Strategy
TLDR
In this article, a power-to-synthetic natural gas (SNG) plant design and a techno-economic analysis of its performance for producing SNG by reacting renewably generated hydrogen from low-temperature electrolysis with captured carbon dioxide.Abstract:
Power-to-gas to energy systems are of increasing interest for low carbon fuels production and as a low-cost grid-balancing solution for renewables penetration. However, such gas generation systems are typically focused on hydrogen production, which has compatibility issues with the existing natural gas pipeline infrastructures. This study presents a power-to-synthetic natural gas (SNG) plant design and a techno-economic analysis of its performance for producing SNG by reacting renewably generated hydrogen from low-temperature electrolysis with captured carbon dioxide. The study presents a “bulk” methanation process that is unique due to the high concentration of carbon oxides and hydrogen. Carbon dioxide, as the only carbon feedstock, has much different reaction characteristics than carbon monoxide. Thermodynamic and kinetic considerations of the methanation reaction are explored to design a system of multistaged reactors for the conversion of hydrogen and carbon dioxide to SNG. Heat recuperation from the methanation reaction is accomplished using organic Rankine cycle (ORC) units to generate electricity. The product SNG has a Wobbe index of 47.5 MJ/m3 and the overall plant efficiency (H2/CO2 to SNG) is shown to be 78.1% LHV (83.2% HHV). The nominal production cost for SNG is estimated at 132 $/MWh (38.8 $/MMBTU) with 3 $/kg hydrogen and a 65% capacity factor. At U.S. DOE target hydrogen production costs (2.2 $/kg), SNG cost is estimated to be as low as 97.6 $/MWh (28.6 $/MMBtu or 1.46 $/kgSNG).read more
Citations
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Journal ArticleDOI
An economic analysis of twenty light olefin production pathways
TL;DR: In this article, a comprehensive economic analysis of twenty light olefin production pathways has been performed, covering current and promising processes from fossil (petroleum, coal and natural gas) and renewable resources (biomass and CO2).
Journal ArticleDOI
Production of synthetic natural gas from industrial carbon dioxide
TL;DR: In this article, the authors proposed an integrated system considering an advanced CO2 capture process, in terms of solvent and process configuration, to treat about 10% of a cement plant's flue gas and convert the captured CO2 into synthetic natural gas using renewable hydrogen generated from a large-scale wind powered electrolyzer.
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Dispatching optimization model of gas-electricity virtual power plant considering uncertainty based on robust stochastic optimization theory
TL;DR: The results show that Stochastic optimization theory can overcome the uncertainty of wind and solar by setting different robust coefficients Γ which reflects the ability of the system to withstand risks and the amount of abandoned clean energy close to zero.
Journal ArticleDOI
A comprehensive analysis of a power-to-gas energy storage unit utilizing captured carbon dioxide as a raw material in a large-scale power plant
TL;DR: In this article, the authors investigated the recycling of carbon dioxide from gas-fired power plant emissions into synthetic natural gas based on a novel power-to-gas process with the aim of chemical energy storage and emission reduction.
Journal ArticleDOI
Modeling and simulation of Power-to-X systems: A review
TL;DR: An introduction to various P-t-X processes including all the stages from the power generation to the upgrading of the final product (X) is presented, followed by several key system-level P- t-X studies, which consist of thermodynamic, techno-economic, and life cycle assessment analyses, published between 2015 and 2020.
References
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Carbon capture and storage (CCS): the way forward
Mai Bui,Claire S. Adjiman,André Bardow,Edward J. Anthony,Andy Boston,Solomon Brown,Paul S. Fennell,Sabine Fuss,Amparo Galindo,Leigh A. Hackett,Jason P. Hallett,Howard J. Herzog,George Jackson,Jasmin Kemper,Samuel Krevor,Geoffrey C. Maitland,Michael Matuszewski,Ian S. Metcalfe,Camille Petit,Graeme Puxty,Jeffrey A. Reimer,David Reiner,Edward S. Rubin,Stuart A. Scott,Nilay Shah,Berend Smit,Berend Smit,J. P. Martin Trusler,Paul A. Webley,Jennifer Wilcox,Niall Mac Dowell +30 more
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Journal ArticleDOI
Renewable Power-to-Gas: A technological and economic review
M. Götz,J. Lefebvre,Friedemann Mörs,Amy McDaniel Koch,Frank Graf,Siegfried Bajohr,Rainer Reimert,Thomas Kolb +7 more
TL;DR: In this paper, the authors compared the available electrolysis and methanation technologies with respect to the stringent requirements of the power-to-gas (PtG) chain such as low CAPEX, high efficiency, and high flexibility.
Journal ArticleDOI
Electrical energy storage systems: A comparative life cycle cost analysis
Behnam Zakeri,Sanna Syri +1 more
TL;DR: In this paper, the authors examined the existing literature in the analysis of life cycle costs of utility-scale electricity storage systems, providing an updated database for the cost elements (capital costs, operational and maintenance costs, and replacement costs).