Abstract: The arrangement of a combustor and a device for selective non-catalytic reduction includes a nozzle for injecting a reagent, a control system for controlling the flow from the nozzle, the control system being arranged for generating a pulsed flow from the nozzle.

Abstract: The nozzle for injecting a reagent into a combustor has a body with a cavity, an occlusion for the cavity, a slit for injecting the reagent, at least one intermediate disc between the body and the occlusion, the at least one intermediate disc having at least one opening for the passage of the reagent, wherein the nozzle further has a first slit between the body and the at least one intermediate disc, a second slit between the occlusion and the at least one intermediate disc (56), and/or at least one slit having at least one corrugated border defining a variable size slit between a minimum size and a maximum size.

Abstract: The boiler (1) has side tubed walls (2) enclosing an inner space (3) and a device for selective non catalytic reduction (7). The device for selective non catalytic reduction (7) has a lance (8) carrying a hose (9) having at least a nozzle (10) and a hose drive mechanism (11) for driving the hose within the lance. The lance (8) protrudes into the inner space (3) from a side tubed wall (2) of the boiler (1).

Abstract: The arrangement of a combustor and a device for selective non-catalytic reduction includes a nozzle for injecting a reagent, a control system for controlling the flow from the nozzle, the control system being arranged for generating a pulsed flow from the nozzle.

Abstract: The nozzle for injecting a reagent into a combustor has a body with a cavity, an occlusion for the cavity, a slit for injecting the reagent, at least one intermediate disc between the body and the occlusion, the at least one intermediate disc having at least one opening for the passage of the reagent, wherein the nozzle further has a first slit between the body and the at least one intermediate disc, a second slit between the occlusion and the at least one intermediate disc (56), and/or at least one slit having at least one corrugated border defining a variable size slit between a minimum size and a maximum size.

Abstract: The boiler (1) has side tubed walls (2) enclosing an inner space (3) and a device for selective non catalytic reduction (7). The device for selective non catalytic reduction (7) has a lance (8) carrying a hose (9) having at least a nozzle (10) and a hose drive mechanism (11) for driving the hose within the lance. The lance (8) protrudes into the inner space (3) from a side tubed wall (2) of the boiler (1).

Abstract: The invention relates to an incineration plant with a furnace, a device for feeding back incineration residues into the furnace, a device for measuring at least one parameter of the incineration, and devices for controlling the incineration. Moreover, the invention relates to a method for controlling an incineration plant.

Abstract: The combustion system for implementing the process has a combustion grate, hoppers below the combustion grate for supplying primary combustion gas through the grate and nozzles that lead into the furnace above the combustion grate to supply secondary combustion gas. At least one extraction duct for flue gas is provided at the rear end of the furnace above the combustion grate. This duct is connected to the suction side of a fan. The pressure side is connected to nozzles arranged in the upper area of the flue gas pass. The nozzle height allows the flue gases a residence time of at least 1 second after secondary gas is supplied.

Abstract: A process for combusting fuels, in particular waste, includes reducing the oxygen mass flow of the underfire combustion gas and increasing the oxygen mass flow of the overfire combustion gas in the event of an increase in the reaction rate or combustion intensity.

Abstract: Combustion residue can be partially melted and/or sintered in the combustion bed of a grate furnace system. By returning the unmelted and/or unsintered combustion residue, completely sintered inert granulates are obtained.

Abstract: The invention relates to an incineration plant with a furnace, a device for feeding back incineration residues into the furnace, a device for measuring at least one parameter of the incineration, and devices for controlling the incineration. Moreover, the invention relates to a method for controlling an incineration plant.

Abstract: The combustion system for implementing the process has a combustion grate, hoppers below the combustion grate for supplying primary combustion gas through the grate and nozzles that lead into the furnace above the combustion grate to supply secondary combustion gas. At least one extraction duct for flue gas is provided at the rear end of the furnace above the combustion grate. This duct is connected to the suction side of a fan. The pressure side is connected to nozzles arranged in the upper area of the flue gas pass. The nozzle height allows the flue gases a residence time of at least 1 second after secondary gas is supplied.

Abstract: A process for combusting fuels, in particular waste, includes reducing the oxygen mass flow of the underfire combustion gas and increasing the oxygen mass flow of the overfire combustion gas in the event of an increase in the reaction rate or combustion intensity.

Abstract: Combustion residue can be partially melted and/or sintered in the combustion bed of a grate furnace system. By returning the unmelted and/or unsintered combustion residue, completely sintered inert granulates are obtained.

Abstract: The process for minimizing the concentration of toxic organic compounds in the fly dusts of incineration plants comprises, when special combustion conditions are detected which lead to the formation of organic pollutants, in particular dioxins/furans and/or precursor compounds of dioxins/furans, recirculating the fly dusts produced in the incineration plant to the combustion process for destruction of these compounds.

Abstract: In the process for treating incineration residues from waste incineration plants, the incineration material is incinerated on a furnace grate. The incineration residues produced are quenched in a wet slag remover and conveyed out of the latter. The wet incineration residues which come out of the wet slag remover are firstly divided into two fractions by means of a screening operation, after which the main fraction is washed with water taken from the wet slag remover, and in the process adhering fine pieces are separated off. The washed pieces of the incineration residues are fed for reuse. The washing water together with the ultra fine pieces which have been taken up during the washing operation pass into the wet slag remover. The fine fraction produced during the mechanical separation operation is fed back to the incineration operation.

Abstract: Incineration is controlled in such a way that a sintering and/or fusing of the slag takes place as early as in the incineration bed of the main incineration zone. The incineration residues produced are quenched in a wet slag remover and conveyed out of the latter. The wet incineration residues which come out of the wet slag remover are firstly divided into two fractions by means of a screening operation, after which the main fraction is washed with water taken from the wet slag remover, and in the process adhering fine pieces are separated off. The washed pieces of the incineration residues are fed for reuse. The washing water together with the ultra fine pieces which have been taken up during the washing operation pass into the wet slag remover. The fine fraction produced during the mechanical separation operation is fed back to the incineration operation.

Abstract: In a process for influencing the properties of incineration residues from an incineration plant, in particular a waste incineration plant, the incineration is controlled sot that a sintering and/or fusing of the slag takes place as earl as in the incineration bed of the main incineration zone, and as yet unsintered or unfused incineration residues are separated off at the end of the incineration operation and fed back to the incineration operation.

Abstract: The process for minimizing the concentration of toxic organic compounds in the fly dusts of incineration plants comprises, when special combustion conditions are detected which lead to the formation of organic pollutants, in particular dioxins/furans and/or precursor compounds of dioxins/furans, recirculating the fly dusts produced in the incineration plant to the combustion process for destruction of these compounds.

Abstract: The process for influencing the properties of incineration residues from an incineration plant, in particular a waste incineration plant, essentially consists in controlling the incineration in such a way that a sintering and/or fusing of the slag takes place as early as in the incineration bed of the main incineration zone, and that as yet unsintered or unfused incineration residues are separated off at the end of the incineration operation and fed back to the incineration operation.