Method for separating vaporous phthalic acid anhydride from a gas stream
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United States of America Patent
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Apr 9, 2002
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N/A
app pub date -
May 18, 2000
filing date -
Mar 26, 1998
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Abstract
Phthalic acid anhydride is recovered from a gas stream containing phthalic acid anhydride vapors by passing the gas stream upwardly through a vertical tube so that the gases expand at the orifice at the upper end of the tube and mix with granules entrained above the tube by fluidizing gas of a fluidized bed of phthalic acid anhydride granules around the tube. The tube, kept free from phthalic acid anhydride granules and the fluidized bed, is indirectly cooled.
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