Apparatus for delivering treating gas to bulk material such as hot coke or coal situated in a container

DETAILED DESCRIPTION What is claimed is: 1.
In an apparatus for treating bulk material such as hot coke which is to be cooled or coal which is to be dried, container means for containing bulk material during the treatment thereof, a plurality of coaxial pipe means extending into the interior of said container means for supplying one or more treating gases thereto, said plurality of coaxial pipe means respectively including tubular side walls which are spaced from each other to define gas passages between themselves, an elongated bar situated coaxially within the innermost of said pipe means while being spaced therefrom so that a gas can also flow in the interior of the innermost of said pipe means along said bar, moving means operatively connected to at least one of said pipe means and said bar for moving at least said one pipe means and said bar axially for adjusting the axial position of said bar and said pipe means with respect to each other, said plurality of pipe means respectively having open ends in the interior of said container means and respectively being enlarged at said open ends which are displaced axially one with respect to the other upon movement of at least said one pipe means by said moving means, said bar also having in the interior of said container means an enlarged end the position of which can be changed with respect to the open end of said innermost pipe means upon axial movement of said bar by said moving means connected thereto, whereby operation of said moving means will regulate the positions of said enlarged ends of said pipe means and said enlarged end of said bar with respect to each other for defining at said enlarged ends adjustable outlets acting as adjustable nozzles through which the treating gas flows into the interior of said container means.
2.
The combination of claim 1 and wherein said enlarged ends of said plurality of pipe means form also a closure means for closing at least one of said passages in one position of at least said one pipe means while said enlarged end of said bar forms an adjustable nozzle outlet with the open end of said innermost pipe means