Abstract: A method and apparatus for processing or cleaning ceramic components that are contaminated with dust deposits are provided. Relative vibrations are generated between the ceramic components and the ambient atmosphere for dislodging dust deposits from the ceramic components. Dislodged dust deposits are collected and conveyed away for disposal or further use. To accomplish this, a screen base is disposed within a closable chamber. A first conveyor is disposed within the chamber below the screen base and leads to a transfer station. A mechanism for generating relative vibrations is disposed between the screen base and the atmosphere of the chamber. An enclosed second conveyor leads from the transfer station to a replacable receiving vessel. An infra sound producer is disposed within the chamber.

Abstract: A method for scrubbing flue gases of furnaces includes subjecting the flue gases with addition of activated carbon particles to wet scrubbing in a wet scrubbing device. Activated carbon particles are mixed with particles of at least one compound selected from slaked lime and limestone to produce a particle mixture that is introduced into the flue gases upstream of a flue gas heat exchanger that is positioned upstream of the wet scrubbing device.

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: An adsorber for purifying flue gases of a furnace includes a housing having a flue gas inlet and a flue gas outlet. The housing has an adsorption medium chamber. A fill socket extends from the top of the housing. A removal device extends from the bottom of the housing. The chamber includes substantially vertical, gas-permeable walls for delimiting the chamber at the inlet side and at the outlet side. The chamber also includes a vertical gas-permeable partition and a slanted non-gas-permeable wall. The wall at the inlet side is a louver wall extending upwardly to the level of the fill socket. The wall at the outlet side is a slotted screen connected with the slanted, non-gas-permeable wall to the fill socket. The flue gas outlet is located opposite the non-gas-permeable wall.

Abstract: In the method of scrubbing flue gases, the flue gases are wet-scrubbed in the presence of activated carbon. The activated carbon is separated from a suspension resulting from wet scrubbing. The activated carbon is then divided into a first and a second portion, and the first portion is thermally desorbed. The first portion of the activated carbon is returned to the second portion of the activated carbon. The first and second portions of the activated carbon are recirculated to the wet scrubbing step. The device for scrubbing flue gases includes a flue gas desulfurization scrubber with a flue gas inlet line, a flue gas outlet line, and an adsorption medium line. A treatment device for treating a suspension formed in the flue gas desulfurization scrubber is provided. A thermal desorption device for the activated carbon is provided. The treatment device includes a separator for separating solid material from the suspension.

Abstract: An adsorption medium reactor has a plurality of removal hoppers for removing flowable adsorption medium from the reactor. Each one of the removal hoppers has at least one removal opening. A common collecting funnel is arranged below the removal openings of the removal hoppers. The common collecting funnel has a removal device for emptying the common collecting funnel. Each one of the removal openings of the removal hoppers is slot-shaped and has two parallel-extending limiting edges. A rotary gate with at least one gate chamber is arranged below each one of the removal openings. The rotary gate is limited by a substantially cylindrical circumferential wall. The cylindrical circumferential wall has a plurality of inlet/outlet openings adapted to a cross-section of the corresponding removal opening. The inlet/outlet openings are arranged in a row axially adjacent to one another parallel to an axis of rotation of the rotary gate.

Abstract: A method for treating sludge by dewatering to form thick sludge and drying to form dry sludge includes the steps of mechanically predewatering thick sludge to produce predewatered thick sludge and mixing the predewatered thick sludge with non-cooled dry sludge to produce a sludge mixture. The temperature of the sludge mixture to be dried is measured and the dry substance contents of the dry sludge based on the measured temperature is determined. Fluctuations in the dry substance contents of the dry sludge are compensated by controlling the amount of recirculated dry sludge to be mixed with the predewatered thick sludge as a function of the temperature of the sludge mixture to be dried. The sludge mixture is dried to produce dry sludge and a portion of the dry sludge is recirculated to be mixed with the predewatered thick sludge.

Abstract: A method for operating a coal-fired power plant with a dry-firing furnace includes the steps of supplying coal as a fuel and adding a Ca-containing substance to the coal. The amount of Ca-containing substance is adjusted such that such that after addition of a CaO contents of at least 0.3% is obtained. The coal with the added Ca-containing substance is burned in the dry-firing furnace whereby a flue gas is produced. The flue gas is guided through a NO.sub.x removal device, an air preheater, a particle separator, and a desulfurization device.

Abstract: In a method for purifying a carbon-containing adsorption medium used for treating flue gases within a flue gas scrubbing process the adsorption medium is introduced into an adsorption medium reactor where the adsorption medium adsorbs pollutants from the flue gas. The adsorption medium laden with pollutants is then removed from the adsorption medium reactor and conveyed into a thermal regeneration apparatus. At temperatures of 350.degree. to 650.degree. C. the pollutants are desorbed in the thermal regeneration apparatus, resulting in a desorption gas. In the desorbing step, pollutants in the form of heavy metals are vaporized and pollutants other than heavy metals are released from the adsorption medium and optionally decomposed. The desorption gas is then guided into an adsorption apparatus where the heavy metals are removed from the desorption gas by adsorption.

Abstract: A fluid-permeable wall component of a sandwich-type construction has a slotted hole screen with substantially parallel extending vertical slot-limiting elements. A stabilizing grate is connected to the slot-limiting elements and includes connecting rods extending transverse to the slot-limiting elements and a louver-type construction with slats that extend transverse to the slot-limiting elements. The wall component is employed in an adsorption medium reactor of the fluidized bed type as a dividing wall for dividing the treatment chamber into compartments or an outer limiting wall. It retains particles of the adsorption medium within the divided compartments of the treatment chamber without obstructing the transverse fluid flow and allows separate removal of adsorption medium from either compartment.

Abstract: Process for adsorbing undesirable constituents from a waste gas by feeding the waste gas through at least one reaction chamber filled with lumpy or granular adsorbent, and through at least one adsorption layer. The adsorbent is introduced into the reaction chamber and discharged therefrom through several separate feed and discharge hoppers in a grid-like distribution. The waste gas is guided in part from the side transversely to the adsorption layer and in part vertically through the reaction chamber by introducing the waste gas between the separate feed hoppers from above to flow downward through an exposed upper surface of the adsorbent in such a manner that the adsorbent in all zones of the reaction chamber participates practically uniformly in the adsorption.

Abstract: A device for separating undesired exhaust gas components from a fluid comprises a reactor with a reaction chamber and having a top and a bottom. The top has a device for introducing a granular adsorption medium. The bottom comprises first and second oppositely slanted sidewalls arranged parallel to one another and forming between them a gutter open in an upward direction. Sections of the gutter form removal funnels with a funnel mouth for removing the granular adsorption medium. The bottom further has fluid inflow openings for admitting the fluid into the reaction chamber, whereby the funnel mouths and the fluid inflow openings are arranged alternatingly in the gutters. The funnel mouths are arranged to form a grid structure. The bottom also has distributing elements for covering the fluid inflow openings. The distributing elements have a pyramid, a cone, a pyramid sector, or a cone sector shape.

Abstract: A device for metered removal of flowable solid material comprises at least one delivery opening for the flowable solid material and an essentially horizontal intermediate storage floor for receiving the flowable solid material, arranged below said delivery opening. A collecting space for the flowable solid material is defined between the intermediate storage floor and the delivery opening. A lateral opening is positioned in the intermediate storage floor adjacent to the delivery opening. At least one removal rake with at least one blade is inserted into the collecting space and movable relative to the intermediate storage floor transverse to a delivery direction of the delivery opening for pushing the flowable solid material collected under the delivery opening into the lateral opening. A pivoting parallelogram-shaped rod arrangement with upper pivoting axes that are arranged in a common horizontal plane is provided for pivotably supporting the removal rake.

Abstract: NO.sub.x is removed from flue gases by contacting same in the presence of active coke/active carbon and a reducing agent, e.g. NH.sub.3, CO or H.sub.2. According to the invention, the adsorbent is precharged with the reducing agent, thereby increasing the surface area over which the adsorbent can react with the flue gas and decreasing the levels of gas-reducing agent which must be used and which may appear in the cleaned gas.

Abstract: A flue gas stream having passed a flue gas desulfurization plant 2 enters a reactor 6 flowing through an activated carbon bed. The flue gas entering the reactor continuously is discontinuously blended with ammonia, thereby achieving a low ammonia content of the flue gas leaving the reactor, while maintaining a high efficiency of nitrogen oxide removal. The duration of ammonia addition and the rate of flow at which ammonia is added to the flue gas stream are controlled as a function of the desired efficiency of nitrogen oxide removal and the ammonia concentration measured in the reactor.

Abstract: Known vortex bed furnaces have a relatively high structural volume in relation to the firing performance. In addition, special devices are necessary for supplying the vortex bed with fuel and with sulphur-absorbing additives. Without subdividing the bed, a partial load can only be achieved with a vortex bed furnace which differs from the full load by only a small percentage. In order to solve these problems, it is proposed according to the invention that the fuel for the vortex bed should be blown with air via at least one dust burner, unsifted, into the combustion chamber, whereby the fine portion of the fuel conducted in is burnt in the dust flame and the coarse portion drops from the dust flame into the vortex bed. The dust burner serves on the one hand to load the vortex bed and on the other hand to increase the relative firing performance, and can be used to improve the suitability for partial load.

Abstract: An outer wall has plate-like sound damping elements with a rear vented facade liner as a weather protection, a plurality of thread bolts connected with cross bars and extending through the sound damping elements so that a portion of each of the thread bolts extends in a gap between the sound damping elements and the rear vented facade liner, a plurality of further thread bolts extending into the rear vented facade liner, a thread bushing composed of corrosion resistant material and screwed at least over that portion of each of the thread bolts to cover that portion, and a nut screwed at an outer side of the rear vented facade liner on an end portion of each of the further thread bolts.

Abstract: An installation for recovering energy from solid fossil fuels more particularly bituminous coal high in inerts consists of at least one unit in which the solid fuels are converted into gas. A gas-turbine and a steam-turbine are provided to recover the energy from the gases. The gases are freed of dust and desulfurized before the gas turbine. The installation is characterized in that a wet-bottom boiler using the ground fuel is provided with pressure firing, the flue gases therefrom being passed to a gas-gas heat exchanger, the desulfurizing unit and dust-removing unit before being utilized in the gas-turbine.

Abstract: A method of and an apparatus for the treatment of mineral coal containing pyrite wherein the mined mineral product is milled, classified into a fine component and a coarse component, the coarse component is recycled and the coarse component in whole and in part is subjected to density suspension so that a light product consisting predominantly of coal is separated from a heavy product comprising the pyrite and mineral detritus. This latter product forms a combustible mixture which is subjected to fluidized bed combustion in the presence of lime to produce an exhaust gas which is used to fluidize the vibrating trough serving as the density separator and as the drying gas and entrainment gas for the mill. The solid residue consists of gypsum (calcium sulfate) and ash and can be used, e.g. in the mixture of cement or plastic, but in any event does not pose an environmental hazard.

Abstract: A dry method of removing pyrite from mineral coal in which the coal is mill-dried in a milling gas stream and the milled product is subjected to classification to recover a predominantly coal combustible fine fraction and a gravel or coarse fraction containing mining detritus, pyrite and coal. The gravel or coarse fraction, according to the invention, is subjected to density separation in whole or in part before being recycled to the milling stage and the density separation separates a light coal fraction from a heavy fraction containing the pyrite and detritus. This coal fraction can be returned to the miling stage while the heavy fraction can be subjected to further separation to recover the pyrite for other use or treatment.