Pirelli Ambiente S.p.a.

Ansaldo Energia S.p.a.

Enel S.p.a.

Roberto Rizzi

Luca Zucchelli

Gennaro De Michele

Sergio Ligasacchi

Marcello Martano

Marco Alberti

Fuel composition which combusts instantaneously, comprising from 40 to 95% by weight of an instantaneously combusting fossil fuel and from 60 to 5% by weight of a non-fossil solid fuel chosen from the group comprising urban solid waste, elastomeric and non-elastomeric polymer materials and mixtures thereof, this fuel being suitably treated so as to be instantaneously combustible. Method and plant for the instantaneous combustion of the said composition.

Fuel composition which combusts instantaneously, method and plant therefor

Fuel composition which combusts instantaneously, comprising from 40 to 95% by weight of an instantaneously combusting fossil fuel and from 60 to 5% by weight of a non-fossil solid fuel chosen from the group comprising urban solid waste, elastomeric and non-elastomeric polymer materials and, mixtures thereof, this fuel being suitably treated so as to be instantaneously combustible. Method and plant for the instantaneous combustion of the said composition.

A nozzle for the injection of solid fuel in dust form into a combustion chamber, to be installed in correspondence with the outlet of a burner coaxially to the longitudinal axis of the burner, comprising a stationary annular part divided into coal ducts of a circumferential width that decreases towards outlet section to form coal-dust-rich air streams, a central duct for a coal-dust-poor air stream sideways delimited by the coal ducts and having an outlet end, a central member that is axially mobile within the central duct, for varying the cross section of a central passage delimited by the stationary annular part at the outlet end. Air ducts for the coal-dust-poor air stream are formed between each pair of adjacent coal ducts in the stationary annular part communicating with the central duct and having a circumferential width increasing toward the outlet end. Deflectors for the coal-dust-poor stream are provided at the outlet from the ducts to direct the stream from each air duct in a direction diverging radially from the central duct.

Pulverized coal injection nozzle

A low NOx burner comprising ducts for the primary (6), secondary (7) and tertiary air (14), arranged coaxially around its longitudinal axis, for supplying of the primary, secondary and tertiary air, respectively, to a combustion chamber (3), means for accumulation of the air (5), means to give vorticity to the primary, secondary and tertiary air (11, 15, 27) installed in the respective ducts, means for supply of fuel (23, 32, 43) arranged within said ducts to inject the fuel into said combustion chamber. The axial swirler for the secondary air (11) is formed by a plurality of blades each of which is made up of a stationary part (11a) and a mobile part (11b) connected to actuator means capable of moving it in an angular direction to give an air outlet angle of between 30.degree. and 60.degree.. The axial swirler for the tertiary air is conical in shape and has fixed blades. On the tertiary air duct a passage (16) is formed for supply of secondary and tertiary air.

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Monza, Italy

Roberto Rizzi