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>>> CRYOSTAR Expanders


CRYOSTAR Expanders For Air Separation History & Capabilities The beginning Cryostar started to build expanders back in 1973 driven by engineers having gathered ... – PowerPoint PPT presentation

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Title: >>> CRYOSTAR Expanders

gtgtgt CRYOSTAR Expanders
  • For Air Separation

History Capabilities
  • The beginning
  • Cryostar started to build expanders back in 1973
    driven by engineers having gathered broad
    experience in their former companies
  • This stating team was joined very quickly by an
    enthusiastic crew of engineers with experience
    in thermodynamics, mechanics and high speed
    machinery. Development started rapidly, gaining
    the confidence of most of the world gas
  • In the mean time, more than 1000 units are in
    operation and Cryostar has developed the world
    largest range of expanders for air separation.

The range
  • The largest range in terms of shaft power
  • Most of the applications in air separation can be
    covered with one of Cryostars expanders.

Shaft powers from less than 1 kW are available up
to the maximum ever operated for air separation !
The Standard Models
  • ECO
  • ECO 50, ECO 70, ECO 90, ECO 120TFC 70, TFC 90,
    TFC 120, TFC 200

The ECO- family is used in a process where the
shaft power is absorbed by an oil brake. It
covers the low end range of expanders, mostly for
small N2/O2 generators. Over 350 units are in
operation all over the world. Units are highly
standardized with most of our customers and thus,
permits low costs for a rugged and reliable
expander. The TFC range is coupled with a cold
compressor beneath the oil brake. Shaft powers
from less than 1 kW up to typically 70kW are
ECO 70 cut-out model (Inlet guide vanes are
The Standard Models
  • TP
  • TP 120, TP 200, TP 300, TP 400

The TP family covers the higher end of oil brake
expanders. Various brake configurations and
casings for higher pressures can cope with a
large range of process conditions. These units
are custom-designed to ensure best fit of process
requirements. High degree of flexibility allow
their use in various conditions- A double shaft
seal permits a safe separation between
process and oil system even with higher process
TP 120/32
The Standard Models
  • TC
  • TC 120, TC 200, TC 300, TC 400, TC 500

With the TC family, the shaft power is recovered
by a compressor on the same shaft. A very large
range of pressures, flows and shaft powers are
available to best fit your process
conditions. These units are designed with highest
efficiencies to provide their operators with a
very high pay-back and the highest availability
to limit the downtime as much as possible. You
will find these expanders in most of the modern
air separation plants all over the world.
TC 120 with its modular oil system
The Standard Models
  • TG
  • TG 120, TG 200, TG 300, TG400, TG 500

The TG family converts the shaft power into
electrical energy which is returned to the
electrical grid. Due to very high efficiency and
stable shaft speed (locked by the mains
frequency), these units are very reliable and
energy efficient. They are in operation where a
booster compressor is not adequate for the chosen
process. Cryostar has a large range of flow and
shaft powers in operation with most of the world
gas companies.
Two stages generator braked units
The Special Models
  • LTP 70, LTP 90, LTG 70, LTG 90, LTG 120

Back in 1985, Cryostar made the first tests with
liquid expanders. The first unit was build the
same year, based on a Pelton type of wheel. In
1986, a high efficiency liquid expander was
build, based on a Francis wheel which has
proven its efficiency, flexibility as well as its
reliability. Cryostar has now a full range of
liquid expanders in operation with oil brake for
small shaft powers or with generator brake for
larger units. Cryostar is having by far the most
best experience with these money makers.
Liquid turbine during test with large N2 pumps
  • Delivered units (by end 2003)
  • By Model

More than 1000 expanders have been delivered from
1983 up to end 2003.
The Special Models
  • Various applications
  • TFC s, MTC 120, Bloweco 90 ...

Cryostar was ever on the foreground and was
watching for new applications to best serve its
customers with innovative solutions. Here a few

The one example is the liquid turbine, but there
are more configurations developed and build by
Cryostar to suit new customer processes. The
MTMC 120 was developed to have about 30 kW on
turbine whereas the compressor needed 70 kW shaft
power, the remaining power being provided by a
high frequency motor.
The TFC was developed with a cold compressor on
the same shaft as well as an additional oil brake
to extract energy from the process.In the mean
time, three sizes are available TFC 70, TFC 120,
TFC 200. The Bloweco was developed with ceramic
ball bearings and blower brake, there are units
in operation since 1998 without any maintenance.
Whether you have a project with a new process
ask Cryostar, the necessary machine may already
exist or can be build !
The Technology
  • Best efficiency with best availability
  • Cryostar is conscious that our customers do need
    the best efficiencies in order to get the most
    out of their investment.Several steps are
    implemented to reach this target
  • On the thermodynamical side- Sophisticated
    tools in order to have best geometry, thus best
  • On the mechanical side- Thorough investigations
    in order to verify wheel integrity under
    operational stress conditions.
  • Best wheel production method- Most of the
    wheels are now grinded out of solid forging in
    order to have best strength.
  • Detailed vibratory analysis of wheels and
    rotor- Sophisticated tools do analyze several
    modes of vibrations during operation in order to
    prevent any unnecessary stress and fatigue.

All steps are performed to ensure highest
efficiency in combination with the longest life
time and minimum down time.
  • Delivered units (by end 2003)
  • By Number of units

  • Your preferred supplier !
  • Cryostar is since the beginning putting all
    efforts to be at the full disposal of its
  • Highest efficiencies are a top priority at
    Cryostar in order to give you the best payback
  • Continuous technical improvements leading to the
    lowest downtimes in the market.
  • Largest range of expanders, allowing the best
    solution whether your process is needing.
  • Innovative solutions to help you to be ahead of
  • Partnership with you in order to have best
    mutual benefits.
  • Best price and performance ratio to win together
    in nowadays demanding market. and striving to
    serve you better day after day ...
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