Plant for the combustion of particulate fuel in a fluidized bed

US4655147A · kind A · utility

Assignee

• Asea Stal AB · SE

Inventors

• Roine Brannstrom · Finspång, SE
• Martin Mansson · Oslo, NO

Key dates

• Filing date: Feb 4, 1986
• Grant date: Apr 7, 1987
• Expiry date: Feb 4, 2006

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23K3/02
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

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.