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Dual Pressure Level Methanation of Co‐SOEC Syngas
Author(s) -
Krammer Andreas,
Medved Ana,
Peham Martin,
Wolf-Zöllner Philipp,
Salbrechter Katrin,
Lehner Markus
Publication year - 2021
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.202000746
Subject(s) - methanation , gas compressor , syngas , substitute natural gas , process engineering , thermodynamics , environmental science , materials science , catalysis , chemistry , nuclear engineering , engineering , physics , organic chemistry
The objective of this article is to demonstrate significant efficiency and performance improvements by simple process modifications of a power to gas plant consisting of high‐temperature coelectrolysis and catalytic methanation. For the advanced process design dual step methanation with two different pressure levels including intermediate compression is proposed, leading to several advantages. By experimental investigations on a lab‐scale methanation test plant higher turnovers (increase of up to 7.1 percentage points) and lower temperature peaks (decrease by up to 130 K) can be proven. Basic energy balance calculations reveal furthermore a reduction in compressor power by 42% for this proposed system.