Method and apparatus for recovery and recycling of heat from hot gases
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United States of America Patent
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Sep 17, 1985
Issued Date -
N/A
app pub date -
Oct 31, 1983
filing date -
Dec 22, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method and an apparatus for the recovery and recycling of heat from hot exhaust gases, specifically from exhaust gases in metallurgical processes and from warm gases having an exiting temperature of below about 800.degree. C. According to the preferred embodiment of the present invention, warm or hot exhaust fuel gases transfer their retained heat to the lower portions of vertically positioned, capillary-type action heat transfer pipes. Cold air is then directed past the upper portion of the heat pipes, thereby transferring the heat of the heat transfer pipes to the cold air. The now heated air gains further heat, prior to introduction into the blast furnace, by passing over, previously heated refractory gratings.
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