Method of operating a fluidized bed reactor

Patent · Tue Mar 07 04:00:00 EST 1989

OSTI ID:6230074

Garcia-Malloi, J A; Alliston, M G

A method is described for operating a fluid bed reactor. Relative coarse and relatively fine solid fuel particles are introduced into a vessel for combustion, air is introduced into the vessel and through the particle to fluidize the sulfur absorbent particles and support the combustion, controlling the velocity of the air so that it is sufficient to entrain the relatively fine particles and insufficient to entrain the relatively coarse particles so that the coarse particles form a discrete fluidized bed in the lower portion of the vessel. The air and entrained fine particles mix with the gaseous products of combustion and rising towards the upper portion of the vessel, separating the fine particles from the mixture, returning the separated fine particles back to the vessel, discharging the spent particles from the vessel, and controlling the quantity of the fine particles introduced into the vessel and returned to the vessel so that they are in excess of that sufficient to saturate the gases in the mixture so that a portion of the fine particles accumulates in the discrete bed of coarse particles.

• Assignee: Foster Wheeler Energy Corp., Clinton, NJ
• Patent Number(s): US 4809625
• OSTI ID: 6230074
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
ADDITIVES
ADSORBENTS
AIR FLOW
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION CONTROL
COMBUSTION PRODUCTS
COMBUSTORS
CONTROL
DESIGN
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FLUID FLOW
FLUIDIZED BEDS
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FOSSIL FUELS
FUEL ADDITIVES
FUELS
GAS FLOW
MATERIALS
NONMETALS
OPERATION
OXIDATION
PARTICLES
PARTICULATES
SOLID FUELS
SULFUR
THERMOCHEMICAL PROCESSES