To
promote
the
chemical
recycling
of
polyethylene
terephthalate
(PET),
its
valorization
by
hydrocracking
was
investigated.
ease
implementation
at
large-scale
this
route,
PET
coprocessed
with
vacuum
gasoil
(VGO),
which
is
a
benchmark
feed
industrial
unit
(10
and
90
wt
%,
respectively)
hydrocracked
using
PtPd/HY
catalyst.
Furthermore,
suitability
PETs
different
natures
origins
to
produce
fuel-assimilable
streams
assessed.
Specifically,
one
virgin,
commercial,
mechanically
recycled
were
used,
analyzing
differences
in
conversion,
yields
product
fractions
(dry
gas,
liquefied
petroleum
gases,
naphtha,
light
cycle
oil),
composition
naphtha
oil
fractions,
given
their
possible
interest
being
used
formulation
automotive
fuels.
The
reaction
runs
performed
batch
reactor
under
following
conditions:
80
bar,
420
°C,
120
min,
catalyst/feed
mass
ratio
10
gcatalyst
gfeed–1.
modified
degraded
plastics
more
easily
converted
into
liquid
hydrocarbons
within
LCO
contents
isoparaffins
between
45
50
%.
From
products,
pathways
PET-derived
molecules
evaluated.
Results in Engineering,
Год журнала:
2024,
Номер
22, С. 102243 - 102243
Опубликована: Май 11, 2024
The
investigation
of
engines
with
different
performances
driving
the
same
load-consuming
device
is
necessary
for
practical
applications.
In
this
paper,
three
diesel
varying
capacities
firefighting
pump
high-rise
residential
buildings
were
studied
and
compared
their
performance,
combustion
parameters,
emissions
by
simulation
method.
AVL
BOOST
software
utilized
to
establish
theoretical
models
these
engines.
operating
balance
point
each
engine
determined,
appropriate
transmission
ratio
drive
train
system
proposed
be
applied.
results
show
that
working
partial
load
modes
Model
1
at
91%
2970
rpm,
2
74%
2960
3
57%
2490
rpm.
works
in
its
higher
mode,
producing
brake
specific
fuel
consumption
(BSFC),
NOx
CO
emissions,
lower
soot
formation,
vice
versa.
operates
load,
resulting
decreased
BSFC,
less
more
generation.
suggest
present
work
option
can
factors
power,
initial
investment
cost,
economics,
emissions.
findings
obtained
from
are
scientific
foundations
support
design
systems
when
considering
comprehensive
technical
technology,
environmental
consideration.
Journal of Mines Metals and Fuels,
Год журнала:
2024,
Номер
unknown, С. 923 - 936
Опубликована: Окт. 16, 2024
Due
to
growing
demands
and
depleting
reserves
of
petroleum-based
fuel,
there
is
a
necessity
find
an
alternative
fuel
for
IC
engines.
Also,
environmental
concerns
globally
faced
problems
like
lots
garbage
generated
through
plastics
major
issue
in
India.
There
significant
disparity
between
plastic
production
waste
generation.
Therefore,
the
need
fuels
derived
from
municipal
has
emerged
enhance
performance
engines,
decrease
emissions,
address
other
line
with
“Swachh
Bharat
Mission
India”.
In
this
study,
was
produced
mix
by
pyrolysis
process.
The
experiments
were
carried
out
constant
speed
1500
rpm
at
different
load
conditions
fueled
standard
diesel,
blends
investigate
engine
combustion
emissions
terms
brake
thermal
efficiency,
power,
specific
consumption,
cylinder
pressure,
net
heat
release,
mean
gas
temperature,
rate
pressure
rise,
andbrake
CO2,
NOx,
CO
HC
parameters
investigated
it
compared
diesel.
overall
result
shows
that
WPO20D80
WPO30D70
exhibit
peak
(torque,
BP,
BTE
BSFC)
lowest
(HC,
CO,
NOx)
all
conditions.
Moreover,
according
results,
BSFC
maximum
efficiency
variations
24.01%
0.346
Kg/kWh
blend
part
condition.
minimum
brake-specific
NOx
diesel
(WPO20D80)
138.66
ppm,
which
higher
than
blends.
This
phenomenon
may
be
attributed
elevated
proportion
pre-combustion
extended
ignition
duration,
resulting
high
temperature
enhanced
release.
analysis
contributes
deeper
understanding
implications
associated
Notably,
ranging
10%
50%
showed
good
tendencies
utilized
engines
consistently
favourable
brakespecific
emission
profiles,
suggesting
its
potential
as
environmentally
friendly
fuel.
