Fluid bed combustor and apparatus for cooling particulate solids

Patent · Tue Nov 18 04:00:00 EST 1986

OSTI ID:7039270

Teigen, B C

This patent describes a fluidized bed reactor having a housing defining therein a chamber, a bed support plate disposed within the housing and dividing the chamber into a fluidizing zone thereabove and an air plenum therebeneath, and means for supplying particulate material including fuel into the fluidizing zone so as to establish a bed of particulate material therein superadjacent the bed support plate. A means is included for supplying air into the air plenum to pass through the bed support plate into the fluidizing zone to fluidize the bed of particulate material, and a bed drain assembly is adapted to receive particulate material for removal from the bed, the bed drain assembly comprising: a. first conduit means having a bounding wall defining a passageway having an inlet communicating with the bed for receiving particulate material and an outlet for discharging particulate material therefrom; b. second conduit means disposed coaxially about the first conduit means and defining an annular passageway therebetween having an inlet opening at one end thereof and an outlet opening at the other end thereof for conveying a cooling fluid therethrough in indirect heat exchange relationship with the particulate material passing through the first conduit means; and c. heat transfer pins each mounted within the bounding wall of the first conduit means such that a first portion of each of the heat transfer pins extends into the passageway for particulate material defined within the first conduit means and a second portion of each of the heat transfer pins extends into the annular passageway for cooling fluid defined between the first and second conduit means.

• Assignee: Combustion Engineering, Inc., Windsor, CT
• Patent Number(s): US 4623309
• OSTI ID: 7039270
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
421000* -- Engineering-- Combustion Systems
AIR FLOW
COMBUSTION CHAMBERS
COMBUSTORS
COOLING
COOLING SYSTEMS
DRAINAGE
ENERGY SYSTEMS
ENERGY TRANSFER
FINS
FLUID FLOW
FLUIDIZATION
FLUIDIZED-BED COMBUSTORS
GAS FLOW
HEAT EXCHANGERS
HEAT TRANSFER
PARTICLES
PARTICULATES