Patent ID: 7708803

Claim:
A method for removing additional aerosols from a gas stream that has aerosols previously removed by a primary aerosol collector, comprising: passing a gas stream comprising a plurality of aerosols and a vapor phase contaminant through a gas duct; removing a first portion of said plurality of said aerosols using a primary aerosol collector; passing said gas stream through a screen, wherein said screen comprises a first portion, a second portion, and a sorbent, and wherein said passing of said gas stream through said screen comprises passing said gas stream through said first portion of said screen; passing said second portion of said screen out of said gas duct; regenerating said sorbent on said second portion of said screen during said passing of said gas stream through said first portion of said screen; and returning said second portion of said screen back into said duct and into contact with said gas stream; collecting at least a second portion of said plurality of aerosols on said screen; and adsorbing a portion of said vapor phase contaminant on said sorbent.