US 4,356,779 AGranted

Fluidized bed solids feed

AssigneeEnergy Resources Company, Inc.

InventorsJames H. Porter, Robert Davis, Jehangir Zakaria

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Abstract

A fluidized-bed system for feeding coal or a coal-limestone mixture into a fluidized bed combustor, a perforated horizontal distributor plate dividing the chamber into upper and lower chamber sections, means for feeding solid fuel particles into the upper chamber section, a source of high velocity gas connected to the lower chamber section and passing through the plate into the upper chamber section for entraining the particles, means for heating the high velocity gas before it is introduced into the upper chamber, an entrainment section defined by converging upper sides of said fuel feeding chamber, and a stream splitting section disposed above said entrainment section and connected to a plurality of pneumatic transport lines each penetrating the distributor plate of a fluidized bed combustor and terminating in an outlet feedport.

Claims4

Dependent claims

A fluidized-bed combustor comprising

a combustion chamber and a distributor plate disposed in said chamber,
a plurality of fuel outlet feedports, evenly spaced across the surface of, and vertically penetrating, said distributor plate,
an air plenum beneath the distributor plate of the combustion chamber, and
a fuel feeding system for directing fuel into the combustion chamber through said distributor plate from below, said system including
a fuel feeding chamber having a distributor plate dividing the chamber into air plenum and fuel fluidization sections, an air feed line connected to the air plenum of the fuel feeding system and a fuel particle feed line connected to the fluidization section for fluidizing fuel in the system, and
transport lines interconnecting the fluidization section and the combustion chamber for carrying fluidized fuel via apertures in the distributor plate of said fluidized bed combustor to said combustion chamber.

3 more elements

Dependencies are inferred from the claim text.