Air pollution device

Claim 1

An apparatus for scrubbing a gas stream for removal of contained solid particulate, vapors and mist therefrom which comprises in combination; a generally cylindrical vertically disposed housing having an annular chamber formed at its lower end; means interior of said annular chamber for centrally locating and securing said housing to a duct or stack in axial alignment therewith for communication of a gas stream in said duct or stack with said annular chamber; a plurality of tangential vane means for rotating said gas stream in said annular chamber and subjecting said gaS stream to centrifugal forces; first circular filter means above said vane means forming the upper inner wall of said annular chamber; flange means closing the upper end of said annular chamber; second circular filter means substantially concentric with and disposed above said first filter means, said second filter means being radially thicker than said first filter means and separated therefrom by said flange means; a liquid mist chamber located interiorly of said first and second filter means, said mist chamber being closed at its axially opposed ends by a bottom plate means and a cover means; liquid spray means centrally disposed within said mist chamber for discharging a liquid mist onto said first and second filter means and for wetting the outer wall of said annular chamber, said outer wall being wetted by liquid which gravitates into said annular chamber from said filter means, said liquid being thrown toward the wall by the rotating gas stream; and means for draining said annular chamber.

Claim 2

An apparatus for scrubbing a gas stream for removal of contained solid particulate, vapors and mist therefrom which comprises in combination; a generally cylindrical vertically disposed housing having an annular chamber formed at its lower end; means interior of said annular chamber for centrally locating and securing said housing to a duct or stack in axial alignment therewith for communication of a gas stream in said duct or stack with said annular chamber; a plurality of tangential vane means for rotating said gas stream in said annular chamber and subjecting said gaS stream to centrifugal forces; first circular filter means above said vane means forming the upper inner wall of said annular chamber; flange means closing the upper end of said annular chamber; second circular filter means substantially concentric with and disposed above said first filter means, said second filter means being radially thicker than said first filter means and separated therefrom by said flange means; a liquid mist chamber located interiorly of said first and second filter means, said mist chamber being closed at its axially opposed ends by a bottom plate means and a cover means; liquid spray means centrally disposed within said mist chamber for discharging a liquid mist onto said first and second filter means and for wetting the outer wall of said annular chamber, said outer wall being wetted by liquid which gravitates into said annular chamber from said filter means, said liquid being thrown toward the wall by the rotating gas stream; and means for draining said annular chamber.