Heat exchanger method and apparatus
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United States of America Patent
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Oct 11, 1988
Issued Date -
N/A
app pub date -
Apr 3, 1987
filing date -
Oct 4, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An exhaust gas containing sulfur trioxide is passed through a first heat exchanger which cools the gas to a temperature which is above the sulfur trioxide dewpoint, so that condensation of sulfur trioxide does not occur in the first heat exchanger, but below a material limit operating temperature of a second heat exchanger, which further cools the gas below the sulfur trioxide dewpoint, whereby the first heat exchanger is protected against corrosion and the second heat exchanger is protected against thermal damage.
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