Protective device for heat exchangers placed in a duct for smoke filled with fine particles of ash
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United States of America Patent
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-
May 26, 1987
Grant Date -
N/A
app pub date -
Dec 27, 1985
filing date -
Aug 14, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a device for protecting heat exchangers placed in a duct (1) for smoke filled with fine particles of ash, e.g. coming from a pulverized coal boiler. The heat exchangers are constituted by parallel grids (10) each comprising a main region (A) fitted with rectilinear lengths (11) of tube extending perpendicularly to the direction of smoke movement, and two end regions (B) fitted with bends (12) and rectilinear lengths (13) of tube extending parallel to the direction of smoke movement. The protective device is constituted by parallel panels (20) which are parallel to the grids (10) of tubes, with each panel (20) being placed between two grids (10) and at each end region (B).
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