Apparatus for regenerative flue gas heat exchanger
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United States of America Patent
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-
Apr 9, 1985
Grant Date -
N/A
app pub date -
Oct 20, 1983
filing date -
Oct 21, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A flue gas scrubbing system for fossil fuel power plant boilers in which the flue gas traverses an air heater from the boiler and an electrostatic or another particulate removal unit before fully or partially passing through a heat exchanger which is used to reheat the clean gas produced by scrubbing all or part of the crude flue gas. To prevent water droplets in the clean gas from entering the heat exchanger, a portion of the crude gas or preferably a recirculated portion of the reheated clean gas is introduced into said clean gas before it enters the heat exchanger with or without further heating, e.g. in indirect heat exchange with a portion of the crude gas branched from a location upstream of the air heater.
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