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@PHDTHESIS{BenitoAbascal:279664,
author = {Benito Abascal, Maria},
title = {{I}nfluence of {H}$_{2}${O}, {HC}l and {H}$_{2}${S} on the
{R}elease and {C}ondensation of {T}race {M}etals in
{G}asification},
volume = {310},
school = {RWTH Aachen},
type = {Dr.},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2015-07546},
isbn = {978-3-95806-125-5},
series = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
Umwelt / Energy $\&$ Environment},
pages = {XIX, 172 S.},
year = {2016},
note = {RWTH Aachen, Diss., 2015},
abstract = {High temperature coal utilization processes such as
gasification emit hazardous traces of heavy metals into the
atmosphere, impacting the environment, human health and
causing technological problems in gasification plants. These
trace metals present in parts per million levels in coal
give rise to several tons of these pollutants in the
environment per year. Therefore, the development of cleaner
and more efficient techniques in next generation coal power
plants is essential. A promising coal utilization process is
the Integrated Gasification Combined Cycle (IGCC) with
integrated hot gas purification and CO$_{2}$ separation. An
increased efficiency and a decreased amount of heavy metal
species can be accomplished through hot fuel gas cleaning.
However, in order to develop clean up techniques that reduce
or remove heavy metal traces, it is necessary to understand
their behaviour during the gasification process. Some
studies have already determined that the chlorine, sulphur
and moisture content of fuels have a significant influence
on the behaviour of some trace metals. Hereby, the influence
of steam, HCl and H$_{2}$S on the release and condensation
of Zn, Cd, Pb, As, Sn and V was experimentally investigated.
The condensation behaviour (temperature and speciation) of
the heavy metal vapours was investigated in a heated flow
channel reactor housed in a furnace with a gas cooling zone.
Experiments on the release of the inorganic vapours were
carried out in a heated flow channel reactor coupled to a
molecular beam mass spectrometer (MBMS) in order to analyse
the gas in-situ. The results of the experimental
investigation were compared with “Scheil-Gulliver
Cooling” calculations performed by Fact Sage 6.3.
Furthermore, thermodynamic pseudo-equilibrium calculations
were carried out to predict the condensation behaviour of
the heavy metals under the influence of super-cooling and
chemical reaction control. A better understanding of the
gasification process and a new insight into the optimization
of the process to reduce the trace metal emissions was
achieved.},
cin = {IEK-2},
cid = {I:(DE-Juel1)IEK-2-20101013},
pnm = {111 - Efficient and Flexible Power Plants (POF3-111) /
HITEC - Helmholtz Interdisciplinary Doctoral Training in
Energy and Climate Research (HITEC) (HITEC-20170406)},
pid = {G:(DE-HGF)POF3-111 / G:(DE-Juel1)HITEC-20170406},
typ = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
url = {https://juser.fz-juelich.de/record/279664},
}