초록 ▼

A plant for combustion of a particulate fuel in a fluidized bed in a combustion chamber has the fuel supplied into the bottom of the combustion chamber by means of a pneumatic transportation system via nozzles. Fuel for the plurality of nozzles is transported through a duct to a distributor and from

A plant for combustion of a particulate fuel in a fluidized bed in a combustion chamber has the fuel supplied into the bottom of the combustion chamber by means of a pneumatic transportation system via nozzles. Fuel for the plurality of nozzles is transported through a duct to a distributor and from there via individual conduits to the nozzles of the combustion chamber. These conduits include flow-inhibiting, pressure-drop generating means, by means of which a pressure drop is generated between the distributor and the combustion chamber. These pressure-drop inducing means influence the velocity of flow and hence the transport capacity of the transport gas so that a desired, normally uniform, distribution of fuel to the bed is secured.

대표청구항 ▼

A fuel combustion plant for combustion of a particulate fuel material comprising: a combustion chamber; a bed of particulate material contained in said chamber; a bottom in said chamber with nozzles for introducing particulate fuel and nozzles for introducing air for fluidizing said bed and combusti

A fuel combustion plant for combustion of a particulate fuel material comprising: a combustion chamber; a bed of particulate material contained in said chamber; a bottom in said chamber with nozzles for introducing particulate fuel and nozzles for introducing air for fluidizing said bed and combustion of said fuel; a compressor for compressing said air; a pneumatic fuel delivering system having an upstream conduit for delivering particulate fuel and transport gas to a fuel distributor; a plurality of downstream conduits, each connecting an individual fuel nozzle with said distributor; and, a pressure drop generating means in each of said downstream conduits between said distributor and said fuel nozzle comprising two tube parts connected in series by a chamber for diverting a flow of said particulate fuel and transport gas such that said generating means has a predetermined coefficient of pressure drop, the coefficients of pressure drop of the generating means in said plurality of downstream conduits being selected to cause said fuel distributor to provide a desired distribution of said fuel among said fuel nozzles.