Triple
Effect
Evaporation
Crystallization
System
for
NaCl
—
Chinese
Supplier
As
a
leading
China-based
manufacturer,
Hanpu
delivers
turnkey
triple-effect
falling-film
evaporation
and
vacuum
crystallization
systems
tailored
for
sodium
chloride
(NaCl)
recovery
and
refinery
brines.
Our
solution
converts
saturated
or
impure
brine
into
>99.5–99.9%
NaCl
crystals
with
excellent
steam
economy,
stable
quality,
and
fully
automated
operation.
Energy
Efficient
by
Design
Three
effects
in
cascade
reuse
latent
heat.
Typical
steam
economy:
1
kg
steam
evaporates
3.5–4.0
kg
water
(with
TVR/MVR
options
for
further
savings).
NaCl-Focused
Process
Control
Inline
density/conductivity,
vacuum
regulation,
and
mother-liquor
recycle
deliver
tight
crystal
size
and
purity
for
table
salt
or
chlor-alkali
feed.
Hygienic,
Easy
to
Maintain
Mirror-polished
seamless
tubes
minimize
fouling
and
ease
CIP;
short
residence
time
protects
product
whiteness.
Process
Flow
—
Triple
Effect
+
Vacuum
Crystallization
-
Feed
&
Preheat:
Raw
brine
is
metered
through
preheaters
to
the
1st-effect
heater.
-
Effect
1
→
Effect
2
→
Effect
3:
Live
steam
heats
Effect
1;
its
vapor
heats
Effect
2;
Effect
2
vapor
heats
Effect
3
under
lower
pressure
and
temperature.
-
Concentration
Control:
Online
density
targets
trigger
discharge
to
the
crystallizer
or
recycle
for
re-evaporation.
-
Vacuum
Crystallization:
Concentrated
liquor
flashes/boils
under
vacuum
to
form
pure
NaCl
crystals;
centrifuge
or
filter
separates
crystals
and
mother
liquor.
-
Condensation
&
Utilities:
Final
vapor
condenses
in
the
condenser;
clean
condensate
is
recovered.
Non-condensables
are
removed
via
vacuum
pump.
System
Structure
Three
effects
(heaters
&
separators),
preheaters,
vacuum
crystallizer
with
circulation
pump,
condenser
&
vacuum
set,
feed/circulation/discharge/condensate
pumps,
centrifuge
(optional),
CIP
skid,
PLC/HMI
with
historian,
and
full
instrumentation
(T/P/level/flow/vacuum/conductivity).
Typical
Triple-Effect
Falling-Film
—
Illustrative
Specifications
|
Parameter
|
Unit
|
Value
(Example)
|
|
Evaporation
capacity
|
kg/h
|
3,000
–
50,000
|
|
Raw
steam
consumption
|
kg/h
|
~900
@
3,000
kg/h
duty
(≈30%
of
single-effect)
|
|
Evaporation
temperature
(1st
/
2nd
/
3rd)
|
°C
|
≈99
/
76
/
53
(vacuum)
|
|
Steam
pressure
(1st
effect)
|
MPa
(abs)
|
0.6
–
1.0
|
|
Materials
of
construction
|
—
|
SS304
/
SS316L
(Duplex/Ti
on
request)
|
|
Crystal
purity
(NaCl)
|
%
|
>99.5–99.9
(process-dependent)
|
|
Automation
|
—
|
PLC/HMI,
recipe
control,
alarms
&
interlocks,
data
logging
|
Applications
-
NaCl
Production:
Table
salt
and
chlor-alkali
feed
with
controlled
crystal
size.
-
Brine
Refining
&
ZLD:
Desalination
reject,
mining
brine,
and
chemical
effluents.
-
Integration:
Compatible
with
RO/NF
pretreatment
and
forced-circulation
crystallizers.
Delivery
Workflow
Feed
&
targets
→
Bench/pilot
(optional)
→
Process
&
heat
balance
→
Detailed
engineering
&
fabrication
→
Installation
&
commissioning
→
Performance
test
&
training
→
O&M
support
with
spares.
About
Hanpu
Hanpu
is
a
professional
EPC
supplier
of
evaporation
and
crystallization
systems
in
China.
We
focus
on
energy-saving
multiple-effect
and
MVR
technologies
for
salts
and
industrial
wastewater.
From
feasibility
and
investment
analysis
to
long-term
operations,
we
deliver
predictable
payback,
safety,
and
consistent
quality.
