Collection device for dryer exhaust gases

Claim 1

Apparatus for use in separating fine particles from a gaseous stream, said apparatus comprising: conduit means for carrying a stream of gas having particles mixed therein; vessel means including an outer annular wall portion connected to said conduit means for receiving said stream and presenting inwardly facing tubular surface means for collecting particles from said stream; wall means spaced inwardly from said outer annular wall portion and coaxial with said inwardly facing tubular surface means and including an ascending stack wall partially within said vessel means and an annular wall surrounding the lower portion of said stack wall and presenting outwardly facing tubular surface means spaced therefrom in confronting relationship with said inwardly facing tubular surface means, said conduit means entering the vessel above the lower end of said stack wall; ceiling means extending between the coaxially spaced tubular surface means and inclined downwardly and outwardly; means for directing coolant fluid between said stack wall and said annular wall whereby to establish said walls as cooled surfaces; fluid introducing means opening through the ceiling means for causing a flow of liquid over the inner surface of said ceiling means to the upper ends of both said tubular surface means and down the confronting faces thereof, whereby to prevent adherence of said particles to said surface means and insure effective collection of said particles and an interior splash plate inclined inwardly and downwardly from the outer edge of the ceiling means to the tOp of said inwardly facing tubular surface means.