Article
Thermodynamics
Manuel Bailera, Begona Pena, Pilar Lisbona, Julian Marin, Luis M. Romeo
Summary: Power-to-Gas (PtG) technology converts surplus electricity into synthetic natural gas, valorizing captured CO2 to produce 'carbon neutral' natural gas and allowing temporal displacement of renewable energy. Using PtG-Oxycombustion hybridization can integrate mass and energy flows of the global system, improving energy efficiency.
Article
Thermodynamics
S. Garcia-Luna, C. Ortiz
Summary: The deployment of renewable energy worldwide is growing exponentially, but its intermittency limits its impact on the grid's annual energy contribution. As a result, coal remains the largest source of electricity generation globally. Developing negative emissions technologies, such as Bioenergy with Carbon Capture and Utilization (BECCU), offers a promising solution. This study focuses on integrating waste biomass oxycombustion and a power-to-methane system, using a proton exchange membrane electrolysis driven by photovoltaic solar energy. The results show excellent integration and significant reduction in CO2 emissions, with potential interest for both new and retrofitted biomass power plants.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Energy & Fuels
Daniele Candelaresi, Giuseppe Spazzafumo
Summary: This study proposes a system for the simultaneous production of synthetic natural gas (SNG) and electricity from biomass and renewable energy sources, using the Allam thermodynamic cycle as the power unit. The system uses oxycombustion of biomass syngas and electrolytic oxygen, and thermochemical methanation of CO2 generated from oxycombustion with renewable hydrogen to produce SNG. The overall plant efficiency is 67.6% and significant amounts of electricity and high-calorific-value SNG are produced.
Article
Thermodynamics
Ruth Diego-Garcia, Antonio Moran, Luis M. Romeo
Summary: Power-to-gas technology converts and stores surplus electricity in the form of gas. The focus is currently on biological processes, where microbial electrosynthesis (MES) cells produce biogas through microbial action and electrical energy. The OxyMES scheme combines oxy-fuel combustion and bioelectrochemical processes to neutralize CO2 emissions from an industrial process.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Luis M. M. Romeo, Marco Cavana, Manuel Bailera, Pierluigi Leone, Begona Pena, Pilar Lisbona
Summary: This study evaluates the influence of nonstoichiometric methanation under different H/C ratios on the limitations presented by pure hydrogen injection. It suggests that non-stoichiometric methanation could be an alternative to increase hydrogen injection in the gas network, facilitating the coupling of the gas and electricity sectors.
Article
Green & Sustainable Science & Technology
Pavel Straka
Summary: The study focuses on evaluating technical implementations, CO2 sources usability, and the mass deployment potential of Power-to-Gas technology, emphasizing the importance of ensuring a low price of surplus electricity. An approach to eliminate regulated electricity distribution fees by associating a methanation plant with the main CO2-producing plant is proposed. Additionally, the study evaluates the use of P-t-G as an auxiliary operation of a lignite-fired power plant, showing a potentially good return on investment.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Fabio Salomone, Paolo Marocco, Daniele Ferrario, Andrea Lanzini, Debora Fino, Samir Bensaid, Massimo Santarelli
Summary: In this study, a comprehensive energy analysis of a PtG system integrated with a real waste incinerator is conducted. It is found that PtG and carbon capture and utilisation can play a crucial role in promoting a sustainable energy transition.
Article
Green & Sustainable Science & Technology
Nora Elhaus, Sebastian Kolb, Jakob Mueller, Markus Goldbrunner, Juergen Karl, Katharina Herkendell
Summary: Biomethane produced through biological methanation can play a crucial role in achieving European climate goals and replacing natural gas. This technology converts CO2 from biogas into methane using hydrogen produced via electrolysis, making it a valuable storage and balance solution for the energy grid. Results from the study show that biological methanation with anaerobic digestion using manure as feedstock has the lowest greenhouse gas emissions. However, when using energy crops and reducing emissions from feedstock production, biological methanation achieves the greatest reduction in emissions compared to traditional biomethane production methods.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Green & Sustainable Science & Technology
Freya Goffart De Roeck, Astrid Buchmayr, Jim Gripekoven, Jan Mertens, Jo Dewulf
Summary: Power-to-Methane (P2M) pathways are an innovative solution for long-term storage of surplus renewable electricity. This study compares the environmental impact of biological and catalytic P2M pathways and identifies their differences. The results show that the global warming potential per MWh synthetic CH4 is similar for both pathways, but their impact is distributed differently across processes.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Eero Inkeri, Tero Tynjala, Hannu Karjunen
Summary: PtG technology integrates renewable electricity production into the energy system with flexible load regulation and low-emission methane. The operation of the electrolyzer is related to the intermittency of renewable electricity production and electricity markets, resulting in varying full load hours (FLH) with different characteristics.
Article
Thermodynamics
Daria Katla, Michal Jurczyk, Anna Skorek-Osikowska, Wojciech Uchman
Summary: This paper analyzes the power to gas installation as a solution for storing excess electricity from renewable sources, with integrated electrolysis, hydrogen production and storage, SNG production, and biomass gasification for carbon feedstock. The simulation model in Aspen Plus is used to determine efficiency in different hydrogen availability states. Calculations show efficiency ranging from 43.04% - 68.77% for H-2 production from RES cases and 20.56% - 43.80% without additional hydrogen production.
Article
Thermodynamics
Manuel Bailera, Pilar Lisbona, Begona Pena, Andreina Alarcon, Jordi Guilera, Jorge Perpinan, Luis M. Romeo
Summary: This study compared nickel and ruthenium promoted by ceria as catalyst active phase for the production of synthetic natural gas. Nickel-based catalyst exhibited higher CO2 conversion and showed less reduction of BET area and metal dispersion after utilization. Two kinetic models were established, with the kinetic model of the nickel-based catalyst performing better in fitting with the experimental data.
Article
Energy & Fuels
Ga'bor Pinter
Summary: The study examines the global projects of power-to-methane technology, analyzing their temporal and spatial distribution as well as key factors. These analyses are important for determining the potential contribution of power-to-methane technology to decarbonization and for accelerating its process in a changing policy environment.
Article
Thermodynamics
Haiquan Yu, Jianxin Zhou, Fengqi Si, Lars O. Nord
Summary: Combined heat and power dynamic economic dispatch (CHPDED) is a key technology for efficient operation of natural gas combined cycle (NGCC) plants. This study proposes an advanced loads variation capacity model integrated into the CHPDED model, improving feasibility of dispatched demands in NGCC plant operations. Case studies using field operational data demonstrate the effectiveness of the proposed model.
Article
Green & Sustainable Science & Technology
Emanuele Giglio, Raffaele Pirone, Samir Bensaid
Summary: Power-to-gas is a method for storing intermittent renewable energy in a chemical form, converting energy surpluses into hydrogen and then synthetic methane. The system includes optimized methanation units to ensure methane content, with dynamic behavior studied for startup and partial load operation scenarios. Various CO2 staged injections are used to broaden system rangeability.
Article
Energy & Fuels
Luis M. M. Romeo, Marco Cavana, Manuel Bailera, Pierluigi Leone, Begona Pena, Pilar Lisbona
Summary: This study evaluates the influence of nonstoichiometric methanation under different H/C ratios on the limitations presented by pure hydrogen injection. It suggests that non-stoichiometric methanation could be an alternative to increase hydrogen injection in the gas network, facilitating the coupling of the gas and electricity sectors.
Article
Chemistry, Multidisciplinary
Reza Shirmohammadi, Alireza Aslani, Roghayeh Ghasempour, Luis M. M. Romeo, Fontina Petrakopoulou
Summary: This paper studies and optimizes the urea production in Iran's largest CO2 utilization plant. The location, magnitude, and source of inefficiencies in the plant are evaluated using various analysis methods. The optimization process uses decision variables and objective functions trained with a combination of an artificial neural network and a genetic algorithm. The results show the need for improvements in certain components of the plant, and highlight the environmental impact of the absorber column and stripper.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Thermodynamics
Manuel Bailera, Pilar Lisbona, Begona Pena, Andreina Alarcon, Jordi Guilera, Jorge Perpinan, Luis M. Romeo
Summary: This study compared nickel and ruthenium promoted by ceria as catalyst active phase for the production of synthetic natural gas. Nickel-based catalyst exhibited higher CO2 conversion and showed less reduction of BET area and metal dispersion after utilization. Two kinetic models were established, with the kinetic model of the nickel-based catalyst performing better in fitting with the experimental data.
Article
Thermodynamics
Ruth Diego-Garcia, Antonio Moran, Luis M. Romeo
Summary: Power-to-gas technology converts and stores surplus electricity in the form of gas. The focus is currently on biological processes, where microbial electrosynthesis (MES) cells produce biogas through microbial action and electrical energy. The OxyMES scheme combines oxy-fuel combustion and bioelectrochemical processes to neutralize CO2 emissions from an industrial process.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Engineering, Chemical
Marwane Elkarii, Radouan Boukharfane, Saad Benjelloun, Chakib Bouallou
Summary: This paper aims to develop a generalized slurry flow model and propose a surrogate model for pressure drop predictions. Computational fluid dynamics and turbulence model are used to simulate slurry pipe flows, and the model is validated by comparison with experimental data. A new pressure drop correlation model is proposed based on numerical computations.
PARTICULATE SCIENCE AND TECHNOLOGY
(2023)
Article
Metallurgy & Metallurgical Engineering
Manuel Bailera, Takao Nakagaki, Ryoma Kataoka
Summary: In recent years, the injection of reducing gases in the shaft and preparation zone of the blast furnace has been proposed as a decarbonization option. Researchers have proposed a generalized operating line methodology to evaluate these new decarbonization options, allowing for variable molar flows and noncontinuous oxidation profiles. The validation results from simulation software indicate that the extended operating line methodology is reliable.
ISIJ INTERNATIONAL
(2022)
Article
Green & Sustainable Science & Technology
Manuel Bailera, Takao Nakagaki, Ryoma Kataoka
Summary: This article compares 16 Power to Gas integrations for blast furnace ironmaking and evaluates their performance based on 17 key performance indicators. The results show that PtSNG integration using treated BFG as a replacement for coal achieves the best results, reducing up to 21% of CO2 emissions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Claudio Tregambi, Francesca Di Lauro, Sara Pascual, Pilar Lisbona, Luis M. Romeo, Roberto Solimene, Piero Salatino, Fabio Montagnaro
Summary: The aim of this study is to investigate the feasibility of ThermoChemical Energy Storage (TCES) using the Calcium Looping (CaL) process through a dedicated experimental campaign in fluidized bed under realistic process conditions suitable for CaL-CSP integration. The research found that the deactivation of limestone becomes more pronounced when it is co-processed with silica sand. The interaction between sand and lime reduces the porosity and reactivity of the sorbent, leading to a decrease in process efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Energy & Fuels
Jorge Perpinan, Begona Pena, Manuel Bailera, Valerie Eveloy, Pravin Kannan, Abhijeet Raj, Pilar Lisbona, Luis Miguel Romeo
Summary: The decarbonization of the iron and steel industry, accounting for a significant portion of global emissions, is essential for achieving carbon reduction targets while maintaining economic competitiveness. Carbon capture (CC) technologies play a critical role in this process. This review provides an analysis of the integration options for CC technologies in the BF-BOF steelmaking route, highlighting their potential in terms of energy penalty, carbon abatement, cost, and deployment considerations. The review identifies promising methods like chemical absorption, physical adsorption, oxy-blast furnace, calcium looping, Sorption Enhanced Water Gas Shift, and membranes for reducing carbon emissions. The article offers crucial insights for decision-making and addresses barriers to practical implementation.
Article
Green & Sustainable Science & Technology
Jorge Perpinan, Manuel Bailera, Begona Pena, Luis M. Romeo, Valerie Eveloy
Summary: This paper presents a novel integration of carbon capture and power to gas technologies in the steelmaking industry. Green hydrogen is produced via PEM electrolysis and CO2 is scrubbed from blast furnace gas to produce synthetic natural gas, which is then injected into the blast furnace. The oxygen produced in the electrolyzer covers the entire oxygen demand of the steelmaking plant.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Thermodynamics
Jorge Perpinan, Manuel Bailera, Begona Pena, Luis M. Romeo, Valerie Eveloy
Summary: This study proposes a new concept that combines amine scrubbing with power-to-gas to reduce emissions in blast furnace-basic oxygen furnace steelmaking plants. By producing synthetic natural gas (SNG) using green hydrogen from water electrolysis and CO2 from steelmaking, carbon can be recycled in a closed loop and avoiding geological storage.
Article
Thermodynamics
Jorge Perpinan, Manuel Bailera, Begona Pena
Summary: This paper presents a novel concept of Power to Gas in an oxygen blast furnace, through blast furnace gas methanation and direct H2 injection. The results show that a H2:CO2 ratio of 4 and full H2 injection can lead to a significant reduction in CO2 emissions.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Review
Energy & Fuels
Sara Pascual, Pilar Lisbona, Luis M. Romeo
Summary: Thermal energy storage (TES) is an effective solution to enhance the dispatchability of concentrating solar power (CSP) plants. The use of novel TES materials can reduce costs and improve the thermal performance of associated power blocks. This review provides an overview of CSP technologies, TES technologies, and TES-CSP configurations in currently operational facilities, as well as the research and development projects conducted in Europe and North America over the past decade. The review presents data on project details, including TES-CSP configurations, technologies applied, storage capacity, power block information, and levelized cost of electricity (LCOE), as well as project location, research period, project leader, and budget information.
