Analysis of the integrated system of electrolysis and methanation units for the production of synthetic natural gas (SNG)

Daria Katla, Michał Jurczyk, Anna Skorek-Osikowska and Wojciech Uchman

Energy, 2021, vol. 237, issue C

Abstract: This paper presents an analysis of the power to gas installation as an exemplary solution of a system storing excess electricity from renewable energy sources. The installation contains an integrated module of the electrolysis process, used for hydrogen production, hydrogen storage and a system for synthetic natural gas (SNG) production. Carbon feedstock for the methanation process is generated with the use of biomass gasification. Integration with an additional CHP unit working on enriched process gas is also considered when no hydrogen is produced in generators (energy valley). The main novelty is the integration of the proposed elements in various states of availability of hydrogen produced in the electrolysis process with the use of energy from renewable sources (different availability and no hydrogen production). The simulation model of analyzed power to SNG installation, built in the Aspen Plus program, is used for calculations. Calculations aim to determine the main parameters of streams within the system and the efficiency of the installation. The values for analyzed cases are within the range of 43.04%–68.77% for the cases assuming H2 production from RES, and 20.56–43.80% for the case without additional hydrogen production.

Keywords: Synthetic natural gas; Hydrogen; Electrolysis; Methanation; Power to gas (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:237:y:2021:i:c:s0360544221017278

DOI: 10.1016/j.energy.2021.121479

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