Stal-laval Turbin Ab

Stal-laval Turbine Ab

Anders Kullendorff

Jan Wikner

Pehr Borjesgard

Renzo Cetrelli

Tonu Vahtra

Stur Schon

Pehr Bojesgard

Sture Schon

A fluidized bed combustion chamber (3) is provided with a perforated bottom plate (4) into which air nozzles (18, 19) are pressed in a manner similar to that used for tubes in a tube sheet of a heat exchanger. About one-third of the nozzles (18) are connected to a startup or auxiliary combustion chamber (14) for blowing in hot gas for heating the bed to the flash-point or ignition temperature of the fuel. Further, the bottom plate is insulated (20) between the nozzles. (FIGS. 1, 4.) A method of operating such a combustion chamber also is disclosed.

Fluidized bed combustion apparatus and method of operation

A gas turbine plant having a gas turbine and an associated compressor that is operated to produce compressed air. The compressed air is applied to support the combustion of an ignited fluidized bed of combustible material disposed within a main combustion chamber. Combustion gases from the fluidized bed are applied to drive the turbine and the compressor. Auxiliary heating chambers are employed to heat the combustible material of the fluidized bed to an ignition temperature over a turbine start-up interval. An ignition combustion chamber is connected in parallel with the fluidized bed and is operated during the turbine start-up interval to apply its combustion gases to drive the unloaded or lightly loaded turbine and compressor.

Gas turbine plant with fluidized bed combustor

A gas turbine plant having a combustion chamber (1) separate from the turbine (15) includes a conduit (16) with an inner tube (17), which conducts heated propellant gas from the combustion chamber (1) to the turbine (15); and an outer tube (18), which surrounds the inner tube (17) to form an annular gap (20) which conducts compressed air from a compressor (10) to the combustion chamber (1). (FIG. 1.)

Gas turbine plant

A pressurized combustion chamber assembly wherein a fluidized bed extends in a longitudinal direction through an elongated, cylindrically shaped outer casing. A multi-stage cleaning plant is positioned within the casing, whereby a plurality of cleaning devices are each connected in parallel to an outlet of the fluidized bed and a plurality of second stage cleaning devices are each connected to an outlet of one of the first stage cleaning devices, respectively. The combustion chamber assembly is formed from a plurality of separate prefabricated chamber modules separably attached to one another.

Combustion chamber

A fluidized bed combustion chamber adaptable for use with relatively large gas turbines and the like, wherein a substantially spherically-shaped outer casing encloses an annular fluidized bed combustion chamber which is mounted on a double bottom air distribution box. A cleaning assembly is positioned within the fluidized bed and the entire combustion chamber is supported on a base plate which extends through the casing and into contact with the box. Compressed air enters the spherical casing, is directed through a pair of cooling gaps, is caused to enter the air distribution box and then passes through the fluidized bed.

Fluidized bed combustion chamber

A cleaning plant positioned within an annular fluidized bed combustion chamber is divided into a plurality of separate cleaning stages, wherein a first stage is located adjacent the fluidized bed and additional stages are arranged within the first stage. Each stage comprises a plurality of separate cleaning devices which act in parallel, while cleaning devices of different stages act in series to remove debris from the combustion gases that exit from the fluidized bed combustion chamber.

Growing community of inventors

Aby, Sweden

Anders Kullendorff