Experimental Study on the Ignition Sensitivity of Bituminous Coal Dust Clouds Soaked in Different Concentrations of Sodium Dodecyl Sulfate Solutions
Combustion Science and Technology,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 16
Published: Feb. 1, 2025
Sodium
dodecyl
sulfate
(SDS)
is
widely
used
as
a
surfactant
for
dust
suppression
in
coal
mines
to
improve
the
collection
efficiency
of
dust.
Dust
that
settles
may
become
airborne
again
after
losing
moisture
through
evaporation,
posing
an
explosion
risk.
The
extent
which
residual
SDS
affects
ignition
sensitivity
currently
unclear.
This
study
investigates
raw
bituminous
dust,
soaked
deionized
water,
and
sodium
solutions
three
different
concentrations
(0.1%,
0.3%,
0.5%).
results
indicate
exhibited
higher
fire
than
water.
susceptibility
cloud
tends
increase
with
concentration.
In
case
satisfying
reduction
effect,
lower
concentration
solution
more
favorable
prevention.
was
highest
when
reached
1111
1250
g/m3.
Language: Английский
Influence of temperature and duration of pyrolysis process on calorific value of cereal straw biochar and dust explosive index
International Agrophysics,
Journal Year:
2024,
Volume and Issue:
38(3), P. 267 - 278
Published: June 26, 2024
1.
Abbasi,
T.,
S.A.,
2007.
Dust
explosions-cases,
causes,
consequences,
and
control.
J.
Hazardous
Materials
140,
7-44.
https://doi.org/10.1016/j.jhaz....
CrossRef
Google
Scholar
Language: Английский
Propagation of Smouldering in Wood Dust Deposits Ignited by Embedded Hot Bodies
Chang Li,
No information about this author
J. Zhang,
No information about this author
Hong-fu Zhao
No information about this author
et al.
Fire and Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 13, 2025
ABSTRACT
Combustible
dust
poses
a
hazard
to
industry
in
two
ways,
i.e.,
reactive
as
cloud
or
pile.
This
paper
deals
with
the
smouldering
behaviour
of
wood
deposits
initiated
by
hot
bodies.
Effects
embedded
depth
and
airflow
condition
are
investigated.
Two
sizes
selected
test
samples,
namely
powder
chip.
The
results
indicate
that
under
same
bodies
depth,
chip
combustion
propagates
faster
than
general
due
its
unique
flocculent
structure.
Due
increased
insulation
effect
layer,
temperature
at
measuring
point
is
higher
layer.
In
addition,
conditions,
propagation
significantly
without
(2.42
4.34
m/s)
for
both
samples.
However,
deposited
has
lower
minimum
ignition
Accumulated
considered
have
greater
fire
risk
form.
Language: Английский
Experimental investigation into the ignition sensitivity of bituminous coal dust clouds soaked in NaCl-Sodium Dodecyl Sulfate-based dust suppressant
Colloids and Surfaces A Physicochemical and Engineering Aspects,
Journal Year:
2025,
Volume and Issue:
unknown, P. 136627 - 136627
Published: March 1, 2025
Language: Английский
Decoupling pyrolysis and combustion of organic powders to determine the laminar flame speed
The Canadian Journal of Chemical Engineering,
Journal Year:
2024,
Volume and Issue:
102(10), P. 3345 - 3357
Published: June 10, 2024
Abstract
Determining
the
laminar
flame
speed
of
dusts
is
far
from
straightforward.
A
strong
dependency
on
experimental
setup
and
data
treatment's
high
complexity
makes
it
a
true
challenge.
This
work
compares
three
complementary
setups
to
measure
organic
dust
(here,
cellulose):
modified
Hartmann
tube,
20
L
sphere,
micro‐fluidized
bed
(MFB)
burner.
The
first
two
consider
propagation
phenomenon
in
its
globality,
which
means
that
numerous
steps
are
involved
simultaneously
(particle
heating,
pyrolysis,
oxidation,
radiative
transfer,
stretching),
while
third
one
decouples
pyrolysis
combustion,
focus
mainly
oxidation
rate.
An
MFB
was
conceived
generate
products
burn
them
flame.
Unstretched
velocities
determined
with
were
consistent
equal
22.0
26.6
cm
∙
s
−1
,
respectively.
Using
Silvestrini's
equation,
values
ranging
between
14.0
33.4
obtained
according
concentration.
With
burner,
much
higher
(135–155
),
due
temperature
fresh
mixture
fact
only
gases
considered.
numerical
simulation
(Chemkin)
confirmed
these
results
since
range
135
231
for
equivalence
ratios
0.6
1.2,
discrepancy
sphere
or
tube
highlights
significant
influence
particle
heating
during
explosion.
Language: Английский
Dust explosion risk in polymer powder processing: review and testing
Journal of Loss Prevention in the Process Industries,
Journal Year:
2024,
Volume and Issue:
unknown, P. 105528 - 105528
Published: Dec. 1, 2024
Language: Английский
Research on the Resource Treatment and Comprehensive Utilization of Carbon Containing Wastes Using Pyrolysis–Gasification Two-Stage Recycling
Processes,
Journal Year:
2024,
Volume and Issue:
12(2), P. 361 - 361
Published: Feb. 9, 2024
Carbon
containing
waste
has
a
certain
calorific
value
and
utilization
due
to
the
presence
of
carbon
elements.
However,
current
treatment
methods
are
mostly
traditional
landfill
disposal,
incineration,
or
expensive
physical
chemical
reaction
methods,
which
clearly
do
not
comply
with
rules
clean
resource-saving
society.
In
this
paper,
new
technology
system
for
wastes
is
proposed,
comprehensively
treats
recycles
wastes,
including
solid
waste,
wastewater,
gas,
etc.,
using
pyrolysis–gasification
two-stage-cycle
technology.
The
calculation
results
indicate
that
technical
scheme
proposed
in
article
feasible
can
achieve
recycling
intermediate
final
products,
efficient
graded
energy.
rate
be
effectively
improved,
energy
consumption
cost
separate
treatments
reduced,
zero
emissions
completely
achieved
by
comprehensive
resource
technology,
one
preferred
solutions
future
societies.
Language: Английский