Vessel for storing particulate materials and method of emptying
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United States of America Patent
Stats
-
Feb 8, 1983
Grant Date -
N/A
app pub date -
Nov 20, 1980
filing date -
Nov 21, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A first bottom discharge opening provided at the lower end of a storage vessel and fitted with a shut-off valve is adjacent to a second bottom discharge opening fitted with a shut-off valve. The second opening is joined to an emptying tube which extends vertically within the vessel and has a top orifice located at a level between 1/4 and 3/4 of the total height of the vessel. At the time of final emptying of the lower portion of the vessel through the first discharge opening, the curve of overpressures resulting from the emptying operation is close to the curve of static pressures generated by all the material stored within the vessel when this latter is full. Thus there is no need for any wall reinforcement and construction costs are appreciably reduced.
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