Abstract: Apparatus for incinerating refuse or the like in a furnace where the flue gases of combustion are combined with secondary air for afterburning the gases in an afterburning zone. The flue gases are dammed before entering the afterburning zone so as to increase retention time of the flue gases in a zone of uniform temperature in the furnace space, then are accelerated in a venturi-like manner in the afterburning zone, and then are decelerated in a venturi-like manner in the afterburning zone. Secondary air is injected across the front of the afterburning zone in a direction opposite the flow of the flue gases so as to further increase the retention time of the flue gases in the furnace space, and so that the combustible components entrained in the flue gases are burnt completely before entering the afterburning zone.

Abstract: Process and apparatus for incinerating refuse or the like in a furnace where the flue gases of combustion are combined with secondary air for afterburning the gases in an afterburning zone. The flue gases are dammed before entering the afterburning zone so as to increase retention time of the flue gases in a zone of uniform temperature in the furnace space, then are accelerated in a venturi-like manner in the afterburning zone, and then are decelerated in a venturi-like manner in the afterburning zone. Secondary air is injected across the front of the afterburning zone in a direction opposite the flow of the flue gases so as to further increase the retention time of the flue gases in the furnace space, and so that the combustible components entrained in the flue gases are burnt completely before entering the afterburning zone.

Abstract: The invention concerns a grate bar for a grate tumbler of a tumbler grate of a trash incineration installation or similar combustion facility with a base rod showing an outer rod surface and an inner rod surface, as well as side surfaces, a head surface and a foot surface, the cross-section form being T-shaped with a cross rod (15). The invention also concerns a grate tumbler for the tumbler grate of a trash incineration installation or the like with a hollow shaft and a cylindrical carrier construction, with grate-bar carriers resting upon the carrier construction and grate bars mounted upon the carriers, while the grate bars are mounted upon the grate bar carriers (8) in such fashion that the slit (25) between adjacent grate bars (11) is no greater than 1 mm in width on the combustion-chamber side.