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Advances in Power-to-X Technologies Using Biogas as Carbon Source

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A5: Hydrogen Energy".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 2682

Special Issue Editors

Biological and Chemical Engineering Department, Aarhus University, Nørrebrogade 44, 8000, Aarhus, Denmark
Interests: Anaerobic digestions technologies; Power to X; microbiology; Energy system integration; carbon economy; carbon capture and utilization
Biological and Chemical Engineering Department, Aarhus University, Nørrebrogade 44, 8000, Aarhus, Denmark
Interests: Power to X; Process Simulation; CO2 capture and utilization; Gas Hydrate; Phase equilibria
Biological and Chemical Engineering Department, Aarhus University, Hangøvej 2, 8200, Aarhus N, Denmark
Interests: Biological Power to X; CO2 valorization; Biomass valorization; Gas fermentation; Gas-liquid mass transfer; Anaerobic digestion
Haldor Topsøe A/S, Haldor Topsøe Alle 1, 2800 Kgs. Lyngby, Denmark
Interests: PtX; SOEC; Catalysis; Methanol; Methane; Ammonia; DME; Jet fuel

Special Issue Information

Dear Colleagues,

This Special Issue aims to cover the latest advances within research and technological development of Power to X (PtX) technologies using biogas as the carbon source. PtX covers a group of emerging technologies that are foreseen to be vital for a flexible and robust renewable energy system as the ultimate goal of IRENA’s Renewable Energy Roadmaps. PtX enables large-scale energy storage and chemical fuel production from renewable electricity and CO2. H2 production from electrolysis is the first step in any PtX solution. However, the lack of H2 infrastructure has encouraged further development of PtX toward Power-to-Methane and Power-to-Liquid solutions, where H2 enters as a reactant along with a carbon source to produce drop-in fuels. The recent focuses on carbon capture and utilization have directed a lot of research and development within PtX technologies towards the biogas industry. Biogas consists of 40–50% CO2 and 50–60% CH4, and as a renewable fuel, it has the disadvantage of low heating value compared to natural gas. Therefore, biogas upgrading is an essential step for the development of the biomethane market in EU. Conventional biogas upgrading technologies separates CH4 from CO2 by physicochemical means and emits the CO2 into the atmosphere. PtX processes can be used as a biogas upgrading technology that to CH4 by using and valorizing the CO2 content to produce C1 or C2 products. Alternatively, the biogas can be used to generate syngas, which enables the production of higher value products, such as methanol, diesel, gasoline, etc. Yet, the development and demonstration of highly efficient PtX systems are needed to realize the potential of PtX in a global context.

Hereby, we invite you to contribute to this Special Issue with submissions of original research and critical reviews covering the development and application of both chemical and biological PtX technologies within the biogas sector.

Prof. Dr. Lars Ditlev Mørck Ottosen
Dr. Behzad Partoon
Dr. Mads Borgbjerg Jensen
Dr. John Bøgild Hansen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Power to X
  • Power to gas
  • Biomethane
  • Green Methanol
  • Biomethanol
  • Biogas upgrading
  • CO2 Capture and Utilization
  • Biological conversion of CO2
  • Bio-methanation
  • Sabatier process
  • Syngas
  • Photosynthetic biogas upgrading
  • Energy system integration
  • Carbon economy

Published Papers (1 paper)

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Research

21 pages, 8414 KiB  
Article
A 3D Transient CFD Simulation of a Multi-Tubular Reactor for Power to Gas Applications
by Victor Soto, Claudia Ulloa and Ximena Garcia
Energies 2022, 15(9), 3383; https://0-doi-org.brum.beds.ac.uk/10.3390/en15093383 - 06 May 2022
Cited by 2 | Viewed by 1855
Abstract
A 3D stationary CFD study was conducted in our previous work, resulting in a novel reactor design methodology oriented to upgrading biogas through CO2 methanation. To enhance our design methodology incorporating relevant power to gas operational conditions, a novel transient 3D CFD [...] Read more.
A 3D stationary CFD study was conducted in our previous work, resulting in a novel reactor design methodology oriented to upgrading biogas through CO2 methanation. To enhance our design methodology incorporating relevant power to gas operational conditions, a novel transient 3D CFD modelling methodology is employed to simulate the effect of relevant dynamic disruptions on the behaviour of a tubular fixed bed reactor for biogas upgrading. Unlike 1D/2D models, this contribution implements a full 3D shell cooled methanation reactor considering real-world operational conditions. The reactor’s behaviour was analysed considering the hot-spot temperature and the outlet CH4 mole fraction as the main performance parameters. The reactor start-up and shutdown times were estimated at 330 s and 130 s, respectively. As expected, inlet feed and temperature disruptions prompted “wrong-way” behaviours. A 30 s H2 feed interruption gave rise to a transient low-temperature hot spot, which dissipated after 60 s H2 feed was resumed. A 20 K rise in the inlet temperature (523–543 K) triggered a transient low-temperature hot spot (879 to 850 K). On the contrary, a 20 K inlet temperature drop resulted in a transient high-temperature hot spot (879 to 923 K), which exposed the catalyst to its maximum operational temperature. The maximum idle time, which allowed for a warm start of the reactor, was estimated at three hours in the absence of heat sources. No significant impacts were found on the product gas quality (% CH4) under the considered disruptions. Unlike typical 1D/2D simulation works, a 3D model allowed to identify the relevant design issues like the impact of hot-spot displacement on the reactor cooling efficiency. Full article
(This article belongs to the Special Issue Advances in Power-to-X Technologies Using Biogas as Carbon Source)
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