Abstract: Disclosed is a method for reducing the dioxin content of the off-gas in operating a sintering plant, in which prior to sintering a material catalytically active in decomposing dioxins and in the form of fine grains or dust is admixed. The admixed catalytically active material prevents the fresh formation of dioxins and reduces the content of dioxins in the off-gas flowing through the material for sintering. The catalytically active material) is incorporated in the agglomerate of material for sintering which is forming and can be disposed of reliably and without danger via the slag formed in the following blast-furnace process.

Abstract: The invention relates to a flue gas pipe (1) of an incineration plant, comprising a reaction zone (2) for breaking down harmful substances and a heat exchanger (3) for cooling the flue gas (R) which is mounted downstream and fitted with a dioxin catalytic converter (4). The dioxin catalytic converter (4) in the heat exchanger (3) makes it possible to prevent the renewed formation of dioxins by de novo synthesis when the temperature drops.

Abstract: A combined mixing and deflection unit includes a flow conduit for a medium flowing in a given direction. The flow conduit has a bend region, a given direction downstream of the bend region as seen in the given flow direction, and a cross section. A guide configuration is disposed in the bend region for deflecting the flowing medium from a main flow direction. The guide configuration defines a plane aligned approximately parallel to the given direction downstream of the bend region. The guide configuration has openings formed therein being evenly distributed over the cross section of the flow conduit.

Abstract: A method of operating a combustion unit of a coal-fired power plant operating according to a slag tap furnace firing method, which includes supplying a titanium-containing material in addition to coal to a melting chamber for accelerating coal burn-up, burning the titanium-containing material together with the coal in the melting chamber at a temperature above 1500.degree. C., and generating fly ash and molten ash as a result of combustion in the melting chamber. Additionally, a combustion unit for a coal-fired power plant, including a melting chamber that has a combustion zone for receiving coal. The combustion zone produces fly ash.

Abstract: A flow duct conducts a gaseous second fluid medium in a given flow direction and has a given cross-sectional area and a given hydraulic diameter. A combined feed and mixing device for introducing a first fluid medium into the second fluid medium in the flow duct and for mixing the fluid media includes at least one tube conducting the first fluid medium and having from 0.05 to 10 feed orifices per m.sup.2 of the given cross-sectional area. A mixing insert disposed downstream of the at least one feed orifice in the given flow direction is spaced apart from the feed orifices by a distance of from 0.05 to 3 times the given hydraulic diameter. The mixing insert has mixing elements being small relative to the given hydraulic diameter and being disposed in mutually parallel rows in a plane oriented at an angle to the given flow direction. The mixing elements of each of the rows are inclined relative to a plane in the same direction to one another and in opposite direction to the mixing elements of each adjacent row.