Thermogravimetric Analysis of Combustion of Semi-Coke Obtained from Coniferous Wood and Mixtures on Their Basis
Fire,
Год журнала:
2024,
Номер
7(11), С. 385 - 385
Опубликована: Окт. 28, 2024
Coal
remains
one
of
the
most
used
solid
fuels
for
heat
and
electricity
generation
but
burning
coal
releases
large
amounts
CO2
into
urban
atmosphere
in
addition
to
harmful
substances.
In
order
reduce
consumption
fossil
fuels,
it
is
necessary
search
capable
replacing
terms
its
thermal
environmental
characteristics.
One
best
alternative
biomass,
which
considered
carbon
neutral,
characteristics
are
worse
than
those
fuels.
this
work,
an
was
studied
first
time,
semi-coke,
obtained
by
gasification
at
a
temperature
700–900
°C,
combustion
turned
out
be
higher
that
biomass
before
treatment
75%.
We
also
fuel
mixtures
based
on
resulting
semi-coke.
The
aim
work
determine
main
semi-coke
from
coniferous
wood
them.
method
thermogravimetric
analysis
oxidising
medium
heating
rate
20
°C/min
applied
research.
According
results
analysis,
ignition
burnout
temperatures
were
determined,
index
duration
coke
residue
synergetic
interactions
between
mixture
components
influencing
established.
It
found
more
50%
10%
higher.
Adding
increases
30%
decreases
temperature.
synergistically
interact
with
each
other
during
value
maximum
mass
loss
rate.
atomic
ratios
O/C
H/C
lower
gasification.
Язык: Английский
Experimental Study of Sawdust Syngas Gasification in Bench-Scale Gasifier and Three-Dimensional Numerical Analysis for Syngas Cocombustion in a 600 MW Coal-Fired Boiler Furnace
ACS Omega,
Год журнала:
2024,
Номер
9(50), С. 49387 - 49396
Опубликована: Дек. 5, 2024
To
comprehensively
explore
syngas
cocombustion
technology,
gasification
experiments
in
a
bench-scale
circulating
fluidized
bed
(CFB)
and
three-dimensional
(3D)
numerical
simulations
of
coal-fired
boiler
furnace
have
been
conducted.
In
the
amplification
experiment
biomass
gasification,
sawdust
has
gasified
using
air,
oxygen-enriched
steam.
The
highest
heating
value
products
reaches
12.3
MJ/m3
when
equivalence
steam/biomass
ratios
are
adjusted
ranges
0.21–0.31
0.1–0.5,
respectively.
Subsequently,
3D
simulation
performed
with
several
kinds
product
to
analyze
characteristics
furnace.
Results
demonstrate
that
velocity
field
exhibits
well-formed
tangential
circle
full
degree
streamlines.
Syngas
reduces
temperature
extremum
combustion
zone.
Radiant
heat
flux
accounts
for
>88%
total
outlet
NO
concentration
case
is
less
than
pure
coal
combustion,
it
reduced
approximately
25
40
mg/m3
at
0.1
0.15,
Язык: Английский