Method and apparatus for longitudinally disposed, sharp puff of gas
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United States of America Patent
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Feb 19, 2013
Grant Date -
N/A
app pub date -
May 3, 2010
filing date -
May 1, 2009
priority date (Note) -
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Abstract
There is provided method and apparatus for creating a longitudinally disposed, sharp puff of gas, useful for puffback renewal of gas-entry faces of a panel-bed gas filter or a panel-bed gas-powder contactor. Perforations are disposed along the wall of a tank in a path generally parallel to the tank's axis. Stoppers are provided for stoppering the perforations. With the perforations so stoppered, a gas is introduced at high pressure into the tank. Thereafter, quickly unstoppering the perforations releases the gas from the tank in form of a longitudinally disposed, sharp puff of gas moving in a direction perpendicular to the tank's axis. If the tank is placed vertically alongside or within a space receiving gas from a panel bed, the sharp puff can effectively puffback the panel bed.
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