Abstract: A self-cleaning collecting device for cleaning a dirty gas stream including a flow-through housing having a dirty gas inlet at the base of the housing and a clean gas outlet at the top of the housing interconnected by a gas treating passage adapted to direct a gas stream vertically through the housing. As the dirty gas stream enters the housing, it is circulated through a liquid bath where noxious vapors and larger particulates are entrained in a mist of liquid droplets which are in turn captured and removed from the gas stream as it moves through a separating panel positioned above the liquid bath. As the gas flows upwardly out of the panel, the captured liquid is circulated to the liquid bath to maintain a flow of liquid within the panel which acts to continuously wash the particulates from the panel.

Abstract: A gas treating system including a housing forming a duct for a gas stream having a vertical panel of flow-through evaporative media secured across the duct, a blower mounted within the duct downstream from the panel adapted to draw the gas stream through the duct, a liquid dispersal assembly connected to a liquid supply adapted to conduct an evaporative treating fluid into the panel where it evaporates into the gas stream as it flows through the panel, and humidity or temperature sensors positioned within the duct downstream from the blower operatively connected with the liquid supply to increase and decrease the flow of liquid into the panel to maintain a preselected humidity or temperature in the gas stream as it flows out of the housing.