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@ARTICLE{Schorn:888959,
author = {Schorn, Felix and Lohse, Dennis and Samsun, Remzi Can and
Peters, Ralf and Stolten, Detlef},
title = {{T}he {B}iogas-{O}xyfuel {P}rocess as a {C}arbon {S}ource
for {P}ower-to-{F}uel {S}ynthesis: {E}nhancing
{A}vailability while {R}educing {S}eparation {E}ffort},
journal = {Journal of CO2 utilization},
volume = {45},
issn = {2212-9820},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2020-05358},
pages = {101410 -},
year = {2021},
abstract = {Producing synthetic fuels via Power-to-Fuel processes
requires hydrogen and a carbon source. To attain a
sustainable fuel, both reactants must originate from a
renewable source. For the carbon source, biogas plants offer
substantial potential. Hence, this paper presents a new
biogas-oxyfuel process that couples a biogas plant with
Power-to-Fuel production and enables a decentralized and
economical supply of biogenic carbon dioxide for the
production of renewable methanol. By using the oxygen
byproduct of the Power-to-Fuel synthesis in the oxyfuel
combustion of a combined heat and power unit, a simple
separation of the CO2 in the flue gas is made possible. To
analyze the thermodynamic changes within the combustion
engine when switching from regular to oxyfuel combustion, an
AspenPlus model of the combined heat and power unit of a
biogas plant is built up herein. Due to the higher heat
capacity of the new working gas carbon dioxide in comparison
to nitrogen, the ideal Otto engine cycle’s mechanical
efficiency drops by percentage point. This drop in
efficiency leads to a loss in revenue for the operator of
the biogas plant. Together with the additional equipment
expenditures for the CO2 separation, this loss is defined as
the CO2 separation costs. For a retrofit of existing biogas
plants with an installed electric power of 75−1000 kW, the
CO2 separation costs are determined to be 88−33 €/t. The
process shown therefore offers a promising way to deliver
biogenic CO2 at low cost for decentralized Power-to-Fuel
systems.},
cin = {IEK-14 / IEK-3},
ddc = {624},
cid = {I:(DE-Juel1)IEK-14-20191129 / I:(DE-Juel1)IEK-3-20101013},
pnm = {135 - Fuel Cells (POF3-135) / 1232 - Power-based Fuels and
Chemicals (POF4-123) / 1111 - Effective System
Transformation Pathways (POF4-111) / 1112 - Societally
Feasible Transformation Pathways (POF4-111)},
pid = {G:(DE-HGF)POF3-135 / G:(DE-HGF)POF4-1232 /
G:(DE-HGF)POF4-1111 / G:(DE-HGF)POF4-1112},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000636251900009},
doi = {10.1016/j.jcou.2020.101410},
url = {https://juser.fz-juelich.de/record/888959},
}