Apparatus for regulating air flow through an air port of a chemical recovery furnace

Abstract From the Canadian patent

Removable apparatus for regulating air flow through an air port in a chemical recovery furnace. A plenum having an adjustable damper is mounted inside a wind box associated with the furnace adjacent to the an air port and supplies and regulates the flow of air from the wind box to the furnace through the air port. A metal cleaning head having a cage-like configuration is pivotally mounted in a retracted, at-rest position inside the plenum above and adjacent to the air port so as not to interfere with movement of the adjustable damper. The cleaning head is adapted for rotatable insertion into the air port for cleaning excrescent material from the peripheral edges of the air port without …