Energies,
Journal Year:
2024,
Volume and Issue:
17(14), P. 3501 - 3501
Published: July 17, 2024
In
order
to
reduce
greenhouse
gas
emissions
associated
with
power
generation,
the
replacement
of
fossil
fuels
renewables
must
be
accompanied
by
availability
dispatchable
sources
needed
balance
electricity
demand
and
production.
Combined
cycle
(CC)
plants
adopting
post-combustion
capture
(PCC)
can
serve
this
purpose,
ensuring
near-zero
CO2
at
stack,
as
well
high
efficiency
load
flexibility.
particular,
chemical
absorption
process
is
most
established
approach
for
industrial-scale
applications,
although
widespread
implementation
lacking.
study,
different
natural
combined
(NGCC)
configurations
were
modeled
estimate
burden
retrofitting
existing
on
thermodynamic
performance.
Simulations
under
steady-state
conditions
covered
widest
possible
range,
depending
turbine
(GT)
model.
Attention
was
paid
net
loss
penalty
attributable
PCC.
The
former
mitigated
lowering
GT
air–fuel
ratio
increase
concentration
(XCO2)
in
exhaust,
thus
decreasing
regeneration
energy.
latter
reduced
when
topping
more
efficient
than
bottoming
a
given
load.
This
likely
case
less-complex
heat
recovery
units.
Journal of Cleaner Production,
Journal Year:
2024,
Volume and Issue:
452, P. 142032 - 142032
Published: April 3, 2024
International
shipping
is
crucial
for
freight
transport,
but
it
relies
primarily
on
fossil
fuels,
contributing
3%
of
global
greenhouse
gas
emissions.
This
calls
urgent
action
to
decarbonize
the
industry.
While
renewable-based
e-fuels
are
a
strong
candidate
decarbonization
this
sector
in
long
run,
deploying
these
required
scale
will
take
significant
time,
considering
technical
modifications
onboard
vessels,
as
well
changes
fuel
production
and
infrastructure
distribution.
Carbon
capture
from
ships
another
route
emission
reduction
that
can
be
implemented
faster
due
relatively
high
maturity
technology.
Tankers,
dry
bulk
carriers,
container
vessels
contribute
majority
emissions
therefore
prime
candidates
carbon
storage.
Solvent-based
post-combustion
chosen
study
mature
suitable
marine
applications,
though
technical,
economic,
environmental,
practical
challenges
remain.
paper
assesses
feasibility
system
ships;
both
retrofit
newbuild
vessels.
achieving
zero-emissions
presents
challenge,
feasible
attain
70%–90%
CO2
through
near
term.
transforming
industry
into
more
sustainable
environmentally
friendly
state.
The
limitation
space
identified
key
factor
determining
viability,
70%–100%
increase
energy
consumption
between
existing
substantial
operational
challenge.
However,
could
economically
acceptable
if
price
alternative
fuels
remains
high.
A
techno-economic
analysis
is
performed
on
the
negative
CO2
emission
gas
power
plant
(nCO2PP)
vs
combined
cycle
turbine
(CCGT)
with
carbon
capture
and
storage
(CCS).
In
nCO2PP
it
can
be
distinguished
following
three
islands:
fuel
preparation,
generation
separation
capture,
respectively.
The
CCGT
CCS
are
modeled
in
commercial
software.
amine
has
been
used
as
reference
to
represent
state-of-the-art
technology.
Both
CAPEX
OPEX
well
incomes
from
sewage
sludge
disposal
avoided
emissions
have
included
analyses.
boundary
of
cost
analyses
includes
plants,
processes
conditioning.
results
show
that
levelized
electricity
(LCOE)
using
exhaust
gasifier
comparable
capture.
Due
high
electrical
energy
consumption
equipment
cost,
LCOE
much
higher
when
plasma
used.
strongly
depends
income
emissions.
Further
reductions
expected
for
development
technology
maturity.
