Martin Gmbh Fur Umwelt-und Energietechnik

Other

Mitsubishi Heavy Industries Limited

General Electric Technology Gmbh

Martin Gmbh Fuer Umwelt- Und Energietechnik

Covanta Energy Corporation

Martin Gmbh Fuer Unwelt- Und Energietechnik

Covanta Energy Group

Oliver Gohlke

Johannes J Martin

Joachim Horn

Michael Busch

Joerg Krueger

Sascha Krueger

Walter J Martin

Masao Takuma

Sascha Krüger

Jörg Krüger

Minoru Kuranishi

Yoshio Yanagisawa

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.

Arrangement of a combustor and a device for selective non-catalytic reduction and pulsed injection method

The boiler () has side tubed walls () enclosing an inner space () and a device for selective non catalytic reduction (). The device for selective non catalytic reduction () has a lance () carrying a hose () having at least a nozzle () and a hose drive mechanism () for driving the hose within the lance. The lance () protrudes into the inner space () from a side tubed wall () of the boiler ().

Boiler and device for selective non catalytic reduction

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.

Incineration plant and method for controlling an incineration plant

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.

Method for supplying combustion gas in incineration systems

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.

Process for combusting fuels, in particular waste

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. To control the melting and/or sintering processes, at least one of the following process steps is implemented: the residues are returned only as long as, and only in such an amount that the changes thus caused in the essential combustion parameters remain within previously defined tolerance limits; the combustion conditions of the combustion process are changed in such a way as to counteract the changes in the combustion parameters produced by the return; the material composition of the combustion residue is changed by the return of selected fractions of the combustion residue so that the melting and/or sintering process of the combustion residue is influenced; and the material composition of the combustion residue is changed by the addition of additives is that the melting and/or sintering process of the combustion residue is influenced.

Process for influencing the properties of combustion residue

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.

Process for minimizing the concentration of toxic organic pollutants in fly dusts

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.

Process for treating incineration residues from an incineration plant

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.

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.

Process for influencing the properties of incineration residues from an incineration plant

The arrangement for treating combustion residues of a combustion installation comprises an ash discharger into which opens a fall shaft, into which the solid combustion residues fall from a furnace grate. The ash is conveyed from the ash discharger into the discharge shaft via a diagonally ascending push-out chute by a push-out ram whose operating rate is so adjusted that the ash is piled up in the fall shaft in a tower formation reaching above the liquid level. Fresh water or a chemical is introduced into the discharge shaft via an inlet. The ash discharger water present in the ash discharger and charged with fine particles is drained into a hermetically sealed settling tank via a draw-off duct. Ash discharger water, with which a chemical can be mixed via another line, is fed from the upper region of the settling tank by a pump via a return line to spray nozzles which are arranged in the upper region of the fall shaft. Ash discharger water which is enriched with solids particles is drawn off from the bottom of the settling tank via another pump which is arranged in an outlet line proceeding from the settling tank. This is effected at a rate such that solids particles having a diameter of up to 2 mm are carried away with the ash discharger water which is drawn off through the draw-off duct.

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Munich, Germany

Oliver Gohlke