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@ARTICLE{Zhao:891656,
author = {Zhao, Xin and Wu, Guixuan and Qi, Jia and to Baben, Moritz
and Müller, Michael},
title = {{I}nvestigation on the condensation behavior of the trace
element zinc in ({A}r/{H}2{O}/{HC}l/{H}2{S}) gas mixtures
and its practical implications in gasification-based
processes for energy and power generation},
journal = {Fuel},
volume = {295},
issn = {0016-2361},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2021-01642},
pages = {120600 -},
year = {2021},
abstract = {Fuels used in combustion and gasification, such as coal,
biomass and wastes, yield large amounts of trace elements,
which can cause both technological and environmental
concerns. This work provides an in-depth insight into the
condensation behavior of the trace element zinc under
gasification-like conditions in atmospheres containing the
HCl and H2S trace gases. A lab-scale quartz reactor with a
multi-stage cooling zone was used to determine the
condensation content and species distribution of the zinc
deposition in different gasification atmospheres. The
Scheil-Gulliver cooling model was used to simulate the zinc
condensation process, since it provides a good reference to
analyze the degree of supercooling during the condensation
process. Competition of the gaseous species HCl and H2S with
respect to the ZnO condensation behavior has been observed.
HCl leads to significant supercooling of the ZnO
condensation. It is shown that this can be compensated by
ZnS acting as nucleation sites for ZnO if significant
amounts of H2S are present. It is further shown that there
is a significant bypass effect, i.e. even after nucleation
has started there is a significant amount of Zn remaining in
the gas phase which significantly extends the condensation
regime to lower temperatures. To visualize both effects, a
H2S-temperature-transition diagram is proposed. The
potential applications including the prevention of
problematic depositions (slagging and fouling) and sorbent
selection as well as design for removal of trace element
zinc from the syngas in IGCC power plants are proposed and
discussed in the light of developing clean power
technologies.},
cin = {IEK-2},
ddc = {660},
cid = {I:(DE-Juel1)IEK-2-20101013},
pnm = {122 - Elektrochemische Energiespeicherung (POF4-122)},
pid = {G:(DE-HGF)POF4-122},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000638041100003},
doi = {10.1016/j.fuel.2021.120600},
url = {https://juser.fz-juelich.de/record/891656},
}