Condensate Polishing
with SeparIX External Regeneration
Why Polish Condensate?
Mixed Bed Ion Exchange
Polishing condensate reduces the risk of damage
to the boiler and the turbine caused by the
concentration of soluble impurities that corrode
internals which contribute to insoluble impurities
such as copper, iron and silica in the re-circulating
stream. In addition, the condensate polisher
protects the system against condenser leaks:
allowing continued operation for low TDS cooling
waters and giving operators time to shut down the
boiler for high TDS cooling waters.
Veolia has been designing, building and
commissioning condensate polishing plants for
over 30 years. Using this knowledge base, a range
of standardized mixed-bed units for condensate
polishing has been created. Standardized units
reduce time to market, optimize cost, facilitate
maintenance and represent proven solutions.
Plants with condensate polishers can also be
started up more quickly. Saving the utility time and
money and allowing more flexibility of operation.
Size
Flow (m3/h / gpm)
Standards
S
150 – 250 / 660 – 1100
ASME, PED
M
250 – 500 / 1100 – 2200
ASME, PED
L
500 – 750 / 2200 – 3300
ASME, PED
XL
750 – 1000 / 3300 – 4400
ASME, PED
SeparIX External
Regeneration
Exhausted mixed bed resins are typically
regenerated externally to fulfill the highest purity
demands.
The newly developed SeparIX technology is a
simple and exceptionally robust process using a
high degree of separation to externally regenerate
the mixed bed resins of condensate polishing
plants. The system consists of two vessels for resin
separation and regeneration as well as a third
vessel for interim storage of the interface resin.
Compared to previous solutions, SeparIX does not require difficult and costly sensor technology or additional
chemicals as its separation process is based solely on the physical characteristics of the resins. The high
purity of regenerated resins enables ammonia cycle operation.
WATER TECHNOLOGIES
SeparIX
SeparIX
SeparIX – Operation Overview
Exhausted mixed bed resins are pre-regenerated to achieve
SeparIX
– Operation
Overview
constant resin
layer heights in the
separation vessel,
independent from their grade of exhaustion. Only after
Exhausted mixed bed resins are pre-regenerated to achieve
regeneration
are resins
separated.
This process eliminates
constant
resin layer heights
in the
separation vessel,
the
need
for
costly
sensors
or
specialty
chemicals to identify
independent from their grade of exhaustion. Only after
and separate
the
resin types.
The anion
resin, on top of the
regeneration
are resins
separated.
This process
eliminates
the need
for costly
sensors
or specialty chemicals
to regeneration
interface
zone,
is transferred
to the anion
identify
and separate
the resinzone,
types.inThe
anion resin,
vessel.
The interface
between
the anion and cation
on top
of
the
interface
zone,
is
transferred
to the
anion
resins, is then withdrawn from the
separation
vessel and
regeneration vessel. The interface zone, in between the
stored temporarily in the interface resin vessel, to be re-used
anion and cation resins, is then withdrawn from the
in the following regeneration cycle.
separation vessel and stored temporarily in the interface
resin vessel, to be re-used in the following regeneration
cycle.
Specially designed resin collectors separate and
transfer anion and interface resins to prevent
mixing and contamination of the resin types.
Specially designed resin collectors separate and
transfer anion and interface resins to prevent
mixing and contamination of the resin types.
Process Flow Diagram
Process
Flow Diagram
CPP
with SeparIX
SeparIX
Solo Solo
SeparIX
For plants with less stringent
requirements
forwith
condensate
For plants
less stringent
purity
a single column
requirements
forversion
condensate
of SeparIX
exists.
This
more
purity, a single column version
economical approach is similar
of SeparIX exists. This more
to in-situ regeneration.
CPP with SeparIX
Mixed Bed exchangers
economical approach is similar
to in-situ regeneration.
Clean
Condensate
Caustic
Acid
SeparIX - External Regeneration
Latest References
400MW Combined Cycle Plant in S Korea
Latest
References
Veolia supplied two treatment lines for a 50/50 split. Each line treats
198m /hr of condensate using mixed beds in the hydrogen form with
400MW
Combined Cycle Plant in South Korea
3
external regeneration via SeparIX.
Veolia supplied two treatment lines for a 50/50 split. Each
265MW Heating Plant in Germany
line treats 198m3/hr of condensate using mixed beds in the
Veolia supplied mixed bed units and SeparIX Solo to treat two lines of
hydrogen form with external regeneration via
SeparIX.
3
condensate. Each line has a flow rate of 205m /hr
265MW Heating Plant in Germany
Veolia supplied mixed bed units and SeparIX Solo to treat two
lines of condensate. Each line has a flow rate of 205m3/hr.
www.veoliawatertechnologies.com/separix
Why Veolia Water
Technologies?
Why Veolia Water
Technologies?
Veolia has over 30 years’
experience in providing water
treatment systems to the
power industry. The company
Veolia has over 30 years’
is uniquely positioned to meet
experience in providing water
all water cycle requirements.
treatment systems to the power
Local business units have full
industry.
The company
technical
capabilities
and are is uniquely
positioned
meet all water cycle
backed
by a globaltosupport
requirements.
network.
Local
business
Veolia
capabilities
for units have full
technical
capabilities
condensate
polishing
have and are
beenbacked
proven in
byPower,
a global support
Pulpnetwork.
& Paper, Chemicals,
Petrochemicals
other experience
Veolia hasand
extensive
markets.
in condensate polishing systems
with references for both in-situ
and externally regenerated
plants. Markets served include
Power, Pulp & Paper, Chemicals
and Petrochemicals.
www.veoliawatertechnologies.com/separix
08/2014 © Veolia Water Technologies Communications / Veolia Water Technologies Photo Library
Raw
Condensate
08/2014 © Veolia Water Technologies Communications / Veolia Water Technologies Photo Library
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