Process for removal of water soluble particulate material from gas streams
AssigneeThe Standard Oil Company
InventorsHarry A. Adams, William O. Fitzgibbons
Life of this patent
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Abstract
The present invention relates to a new and improved process for the removal of urea entrained in air streams by passing the particulate-laden air through a mist eliminator or a demister, the surface of which is continuously contacted with multiple water sprays to wash the water soluble contaminants from the surface of the demister.
Claims12
A process for the removal of urea particles entrained in an air stream by (1) contacting the particle-laden air stream with a continuous water spray partially wetting the urea particles, (2) passing the air stream containing partially wetted urea particles through a mist eliminator consisting of fiber compositions having an open area volume greater than 60 percent based on the total volume of the mist eliminator with sufficient velocity to cause impaction of some of the urea particles on the surface thereof, and (3) continuously removing the impacted urea particles from the surface of the mist eliminator by means of the continuous water spray directed towards its incoming surface.
Process for removing particulate material from a dust-laden gas exhausting from the top of a prilling tower, which comprises passing the dust laden gas through an aqueous scrubbing liquid spray and thence through a filter while simultaneously directing the scrubbing liquid spray against the filter in the same direction as the flow of gas for maintaining the filter in a continuously wetted and irrigated state, and passing cleaned gas from the downstream side of the filter out of the top of the tower.
Dependencies are inferred from the claim text.