Patent ID: 6036756
Filing Date: 2000-03-14
Classification: B01D,Y10S

Abstract:
A center inlet type scrubber having means defining an inlet for gases to be scrubbed, a venturi section in said inlet for controlling gas flow, humidifying gas flow, and for fly ash removal, a downcomer for receiving controlled gas from the venturi section and for directing the gas downwardly in the scrubber, means defining an annulus around the downcomer, means defining an outlet for gas near an upper end of the annulus, and a plurality of spray headers extending into the annulus for spraying scrubber solution in counter-current flow relationship with gases rising in the annulus, the improvement comprising:a perforated tray under a lowest of the spray headers, said perforated tray having several sections, each section extending across at least part of said annulus for receiving gases rising in the annulus, therethrough and each section having a shape which is other than pie shaped;means connected to said downcomer below the lowest spray header to extend the downcomer for positioning the tray and tray sections at a selected distance below the lowest spray header, the tray and an adjacent one of the spray headers forming a spray bank; andsaid perforated tray being connected across said annulus and from a lower end of said downcomer for distributing gases which turn from flowing downwardly in the downcomer to a path moving upwardly into said annulus.