Water,
Год журнала:
2024,
Номер
16(21), С. 3142 - 3142
Опубликована: Ноя. 3, 2024
Cyclone
separators
are
commonly
employed
in
the
mining,
metallurgy
and
chemical
industries
due
to
their
simple
structure,
easy
maintenance
high
recovery
efficiency.
However,
with
wide
application
of
cyclone
separators,
many
problems
have
become
exposed
practical
operation,
restricting
development.
Among
these,
wall
erosion
is
becoming
a
significant
problem.
In
this
study,
resolve
problem
severe
on
walls,
Eulerian–Lagrangian
framework
was
investigate
separator
draft
plate
at
inlet
evaluate
effect
angles
0°,
45°
90°
degree
stabilization
flow
fields.
Moreover,
after
verifying
reliability
numerical
model
via
data
from
experiments,
characteristics
gas–solid
were
analyzed
effects
new
structure
wear
investigated.
The
results
demonstrated
that
unfavorable
phenomena
such
as
secondary
generated
during
operation
could
be
mitigated
by
plate.
When
angle
90°,
lightest
range
influence
smallest.
45°,
comprehensive
performance
best,
there
better
balance
between
energy
loss
erosion.
Therefore,
presence
has
impact
interaction
phases
separator.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Янв. 28, 2025
In
this
paper,
the
usage
of
a
predictive
surrogate
model
for
estimate
flow
variables
in
transient
phase
coolant
injection
from
nose
cone
by
combining
Long
Short-Term
Memory
(LSTM)
and
Proper
Orthogonal
Decomposition
(POD)
technique.
The
velocity,
pressure,
mass
fraction
counterflow
jet
is
evaluated
via
hybrid
technique
source
discrepancy
with
Full
order
explained
study.
POD
modes
efficient
prediction
different
are
defined.
performance
+
LSTM
ranges
training
test
it
found
that
acceptable
when
80%
available
data
test.
errors
axial
velocity
higher
due
to
complexity
vortex
recirculation
region.
ChemBioEng Reviews,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 7, 2024
Abstract
Gas–solid
cyclones
are
broadly
employed
in
the
industrial
sector.
Even
though
numerical
methods
currently
a
strong
tool
for
predicting
characteristics
of
flow
patterns
inside
cyclone
separators,
they
should
be
validated
using
experimental
data.
On
other
hand,
several
practical
aspects
must
considered
to
analyze
operating
circumstances
and
their
design
optimization.
This
paper
summarizes
working
principles
measurement
techniques
utilized
analysis.
Besides,
aspects,
including
various
geometries,
surface
roughness,
erosion
rate,
external
electric
field,
particle
properties,
etc.,
discussed.
Eventually,
research
gaps
future
directions
introduced.
Catalysts,
Год журнала:
2025,
Номер
15(3), С. 239 - 239
Опубликована: Март 1, 2025
The
transition
to
sustainable
energy
has
given
biodiesel
prominence
as
a
renewable
alternative
diesel.
This
review
highlights
the
development
and
optimization
of
solid
transesterification
catalysts,
contributing
greatly
efficiency
synthesis.
These
heterogeneous
catalysts
are
constituted
titanium-,
zinc-,
bio-based
systems
significant
advantages
such
reusability,
thermal
stability,
ability
be
synthesized
from
low-grade
feedstocks.
Recent
advancements
in
structural
optimization,
with
nano-structured
titanium
dioxide
having
potential
yielding
higher
production
up
yield
96–98%
within
5–7
cycles,
render
improved
stability
catalytic
performance.
Several
characterization
techniques,
Brunauer–Emmett–Teller
method,
X-ray
diffraction,
temperature-programmed
desorption,
instrumental
these
their
effective
design.
However,
despite
substantial
promise,
there
still
problems
dealt
large-scale
production,
regeneration,
service
life
catalysts.
account
collates
recent
innovations,
analytical
mechanisms,
prospective
directions
which
elucidate
furthering
technology
chemicals.
The Canadian Journal of Chemical Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 4, 2025
Abstract
The
flow
field
characteristics
of
a
counter
contact‐cyclone
reactor
(CFC‐CR)
used
for
the
production
epoxy
fatty
acid
methyl
esters
were
analyzed
using
Reynolds
stress
model
and
Eulerian
model.
effect
reaction
chamber
height,
impact
distance,
accelerating
pipeline
length
on
distribution
mixing
performance
in
investigated.
results
show
that
height
mainly
affects
time
two
phases.
When
is
greater
than
120
mm,
increasing
its
has
little
improvement
efficiency.
distance
significantly
uniformity
intensity
plane,
thereby
altering
overall
chamber.
30
uniform,
vortices
high,
which
beneficial
liquid
mixture.
effectively
improves
premixing
effect,
meanwhile,
it
ensures
smaller
relative
velocity
difference
when
mixture
enters
Both
perform
well
with
40
mm.
Ultimately,
optimal
structural
parameters,
evaluated
based
are
determined
to
be
H
=
L
T
Energy & Fuels,
Год журнала:
2024,
Номер
38(21), С. 20057 - 20083
Опубликована: Окт. 10, 2024
Diesel
soot
is
well-known
for
its
adverse
effects
on
both
the
environment
and
public
health,
sparking
significant
academic
interest.
The
use
of
diesel
particulate
filters
(DPFs)
represents
an
effective
strategy
capturing
subsequently
removing
particles.
However,
captured
cannot
be
oxidized
under
exhaust
conditions,
additional
fuel
consumption
required
to
increase
oxidation
temperature.
addition
catalysts
can
effectively
reduce
temperature
soot,
improve
efficiency,
save
energy
consumption.
widespread
adoption
catalyst-coated
DPF
systems
largely
dependent
development
catalysts.
This
review
compiles
application
in
field
engine
removal,
with
a
focus
influence
catalyst
physicochemical
properties
oxidation-induced
fragmentation
process.
It
begins
in-depth
discussion
various
catalytic
mechanisms
different
catalysts,
factors
that
affect
activity
are
further
explored.
Then,
this
focuses
process,
potential
synergistic
generated
by
interaction
between
environmental
components
gas
analyzed.
Finally,
applications
removal
engineering
concluded.
provides
key
insights
future
research
efforts
aimed
at
enhancing
efficiency.
