Method and apparatus for the purification of waste gas containing gaseous pollutants
AssigneeTaiyo Kaken Company, Ltd.
InventorsHeiichiro Murakami, Tsuneo Okamoto
Life of this patent
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Abstract
A fluidized-bed process and apparatus involving a vertical column containing a plurality of perforated trays, each tray having a weir disposed on its upper surface to divide that surface into first and second sections, each of which has a plurality of apertures. One section of each tray constitutes 80 to 95% of the total tray surface area. Location of the weir on successive trays alternates from side to side of the column to provide for cross-flow of the fluidized material on the trays.
Claims15
A method for the continuous purification of a waste gas containing gaseous pollutants comprising:
- providing a tower containing a plurality of vertically spaced, perforated trays, each tray having a single weir, extending horizontally along a substantially straight line, provided on its upper surface disposed to divide its surface area into a first section having a plurality of apertures and constituting 80-95% of the total surface area of the tray and a second section having a plurality of apertures and constituting 5-20% of the total surface area of the tray, the location of the weirs on the various trays alternating from side to side in the tower;
- continuously introducing said waste gas upwardly into a lower section of said tower and at the same time continuously introducing activated carbon spheres into an upper section of the tower for contact with said waste gas thereby forming a fluidizedbed on said first section of each of said trays;
- and
- continuously removing purified gas from the top of said tower.
A chemical process column containing a plurality of vertically-spaced perforated trays, each of said trays have a single weir, extending horizontally along a substantially straight line, provided on its upper surface to divide its upper surface into first and second sections, each of said tray sections having a plurality of perforations, and said first tray section having a surface area constituting 80 to 95% of the total tray surface area.
Dependencies are inferred from the claim text.