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Air Separation, Air Compression
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Air Separation, Air Compression
Determining the achievable economies of scale, air separation or air
compression are the single most important parts of any GTL plant. It is here
where the world’s largest compressors are employed. Depending on the applied
process, they feed massive volumes of air either directly to the gas reforming
stage, or to a cryogenic separation process, which provides oxygen for the
conversion of natural gas into syngas.
Siemens’ latest very-high-volume STC-SR main air compressor represents a
significant step towards the economies of scale required from air separation
plants for tomorrow’s GTL schemes. Delivering an amazing 700,000 cubic meters
of air per hour, it effectively surpasses first-generation machines while
retaining maximum long-term reliability.
Next-generation GTL plants, however, will employ even more powerful
compression solutions. In order to keep the required number of compressor
trains within reasonable limits, future main air compressors will have to
achieve a volume flow of 900,000+ cubic meters per hour — corresponding to an
air separation unit output of 5,000+ tonnes per day of oxygen. At Siemens,
these compressors are part of a continuous development program designed to
meet the growing demand of megascale applications. Moreover, before being
shipped and installed at customers’ sites, even the largest of these
compressor trains — encompassing main and booster air compressor, and a
double-ended condensing steam turbine — will have passed string-testing at
Siemens’ unique large-scale compressor test bed. |
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Compression
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Very-high-volume main air compressor |
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Booster air compressor |
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