Abstract A wet scrubber for absorbing oxides of sulphur from contaminated gas comprises an upright housing having an inlet for contaminated gas adjacent at the lower end and an outlet for clean gas adjacent the upper end, a plurality of vertically stacked, successive intense wet scrubbing zones in said housing between said inlet and outlet, each of said zones comprising a horizontal array of elongated, parallel, spaced apart rod like elements which substantially reduce the total flow cross section available to the gas moving therebetween to a value less that of the cross section above and below the array, upper spray means adjacent an upper of said scrubbing zones for distributing into said gas finely divided droplets of scrubbing liquor, which liquor comprises a limestone slurry, said liquor flowing in a downward direction and cascading countercurrent to the upward gas flow through each successively lower scrubbing zones, a high velocity particulate collector stage in said housing between said inlet and a lower of said wet scrubbing zones comprises baffle means across said housing having a flow restricting opening therein and lower spray means for directing scrubbing liquid into the high velocity gas flowing through said opening in a concurrent direction therewith.
Inventors
👤 F Ekman
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-25 00:43
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
The wet scrubber of claim 1 wherein said particulate collector stage comprises a transversely extending baffle between said inlet and said lower one of said scrubbing zones, said baffle having at least one opening therein having a cross-section substantially less than that of said housing for causing accelerated upward gas flow therethrough and a plurality of elongated rod-like elements extending across said opening having impingement surfaces for receiving spray from said lower spray means for wetting and collecting particulant contaminants from said gas.
Claim 2
Dependent Claim
30 words
The scrubber of claim 1 including means for supporting said rod-like elements at opposite ends from walls of said housing permitting free rotation of said elements around their longitudinal axes.
Claim 3
Dependent Claim
62 words
The scrubber of claim 1 including a row of vanes between an upper one of said scrubbing zones and said outlet, each vane including at least a pair of vertically extending intersecting impingement surfaces in parallel spaced apart relation with surfaces of an adjacent vane in said row for collecting liquid from said gas flowing between said surfaces of said adjacent vanes.
Claim 4
Dependent Claim
26 words
The scrubber of claim 4 including means for washing down said vanes in said row with liquid to prevent accumulation of material on said surfaces thereof.
Claim 5
Dependent Claim
26 words
The scrubber of claim 1 in combination with a system for producing a slurry of crushed limestone and water for delivery to said upper spray means.
Claim 6
Dependent Claim
46 words
The wet scrubber of claim 2 including a collection sump adjacent the lower end of said housing below said inlet for collecting precipitous material formed by the mixing of said gas and said scrubbing liquid, and drain means for removing said collected materials from said housing.