Patent ID: 6440198
Filing Date: 2002-08-27
Classification: B01D

Abstract:
A moving granular bed filter for removing contaminants from a gas stream with a quantity of granular media, the moving granular bed filter comprising:a vessel having a wall structure and being formed with a hollow interior, the vessel including a gas inlet, a gas outlet, a media inlet, and a media outlet in communication with the interior; the media inlet extending between a pair of opposed regions of the wall structure and being structured to supply the granular media to the interior of the vessel; the ganular media being in a freely-formed filtration pile within the interior of the vessel, the filtration pile having an upper surface, the filtration pile extending between the media inlet and the media outlet and extending between the pair of opposed regions of the wall structure to define a first chamber and a second chamber within the interior, the first and second chambers each extending from the upper surface of the filtration pile; the first chamber extending between the media inlet and the wall structure; the second chamber extending between the media inlet and the wall structure; and the gas inlet being in communication with the first chamber, the gas outlet being in communication with the second chamber, and the filtration pile of granular media being operatively interposed between the first and second chambers.