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LNG Tanker & Carrier equipment |
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Natural gas is conventionally transported over long distances in liquefied state. For example, ocean going LNG Tankers & Carriers transport liquefied natural gas from a first location, in which the natural gas is liquefied, to a second location in which it is vaporized and sent to a gas distribution system.
Since natural gas liquefies at cryogenic temperatures, i.e. temperatures well below -100°C, there is always a continuous boil-off of the liquefied natural gas during transportation. Accordingly, equipment needs to be provided in order to handle this boil-off. |
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The range |
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Cryostar is the only supplier for the combined cryogenic machinery for the Cargo Handling System on LNG Carriers, i.e : |
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Boil-off Gas Compressors, |
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Gas Heaters and Vaporizers, as well as |
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Re-liquefaction Machinery and Reliquefaction Systems. |
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Irrespective of the selected ship drive system (conventional steam turbine, dual fuel engine, Diesel-electric drive system, gas turbine or Diesel engine with re-liquefaction plant), Cryostar has the right products for assuring the reliable operation of the ships' cryogenic systems.
Sophisticated Cargo Handling Equipment is used during loading and unloading of LNG to maintain optimum tank operating parameters, as well as for preparing the ship for operation, and during de-commissioning prior to dry-docking.
Cryostar's Product Matrix' allows easy selection for each ship drive system of the appropriate configuration of the Cargo Handling Machinery and Equipment.
The unique know-how among several disciplines of the cryogenics industry is the result of continuing efforts over the last 30 years for excellence in achieving specific, advantageous technical solutions, outstanding customer service and the best possible quality for critical equipment.
As a result, 2 out of 3 LNG Carriers have our equipment aboard, accounting for more than 13'000 successful voyages … |
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Products |
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Centrifugal compressors
Cryostar is best known for advanced, reliable and efficient turbomachinery for all kinds of applications in the industrial gas and process industries, as well as on the Seven Seas aboard numerous LNG Carriers.
More than 50% of all LNG Carriers are equipped with our compressors, accounting for more than 50% of all transported LNG world-wide.
Shipyard's and shipowner's preference for Cryostar equipment endorses the outstanding safety, reliability, performance, and ease of operation of these machines. |
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Gas Heaters and Vaporizers
Cryostar Gas Heaters and Vaporizers account for almost 60% of the entire installed base on the LNG Carriers' fleet, with a corresponding part of the actual LNG deliveries worldwide. It is Cryostar who compiles most of the know-how, and experience on this specific application.
Cryostar is, of course, continuously updating and improving design, performance, design basis, calculation methods and manufacturing design in order to maintain the leading edge. |
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Systems : industrial heat exchangers & compressors
Although studied for many years, LNG re-liquefaction has not yet enjoyed the full technical and economic appreciation of owners and operators. Cryostar, however, improved the existing technologies and added important characteristics allowing full re-liquefaction without the need for venting or burning gas during normal operation.
Here are the main characteristics of the ‘EcoRel' System and associated machinery:
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Cryogenic refrigeration process based on Brayton cycle with nitrogen as an inexpensive and safe cooling medium. |
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Refrigeration machinery skid located in the safe motor room includes a 3-stage nitrogen compressor and single-stage expansion turbine on one common gearbox (‘Compander'), with cooler rack and counter-current heat exchanger. |
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Two stage Boil-off Gas Compressor in cargo machinery room with proven bulkhead seal and with drive motor in the cargo motor room. |
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Cold box with condenser located in cargo machinery room. |
The Cryostar product matrix allows a quick selection of each type of ship drive and its dedicated equipment. |
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Cryostar's products Matrix - LNG Carrier Cargo Handling System Alternatives |
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To view a video presentation
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Cryostar Group
