초록 ▼

A fluidized bed reactor and method of operating same, in which a gas column is formed above a fluidized bed which contains a mixture of air, the gaseous products of combustion from a fluidized bed, and particulate material entrained by the air and the gaseous products of combustion. The gas column i

A fluidized bed reactor and method of operating same, in which a gas column is formed above a fluidized bed which contains a mixture of air, the gaseous products of combustion from a fluidized bed, and particulate material entrained by the air and the gaseous products of combustion. The gas column is saturated with the particulate material of the particulate material is separated from the mixture. A portion of the separated particulate material is injected back into the bed, and the remaining portion is passed to external equipment.

대표청구항 ▼

A method of operating a fluid bed reactor comprising the steps of introducing relative coarse and relatively fine solid fuel particles into a vessel for combustion, introducing air into said vessel and through said particles to fluidize said particles and support said combustion, controlling the vel

A method of operating a fluid bed reactor comprising the steps of introducing relative coarse and relatively fine solid fuel particles into a vessel for combustion, introducing air into said vessel and through said particles to fluidize said particles and support said combustion, controlling the velocity of said air so that it is sufficient to entrain said fine particles and insufficient to entrain said coarse particles so that said coarse particles form a discrete fluidized bed in the lower portion of said vessel, said air and entrained fine particles mixing with the gaseous products of combustion and rising towards the upper portion of said vessel, separating said fine particles from said mixture, dividing said separated fine particles into two portions, returning one portion of said separated fine particles back to said vessel, discharging the other portion of said separated fine particles to external equipment, controlling the quantity of said fine particles introduced into said vessel and returned to said vessel so that they are in excess of that sufficient to saturate the gases in said mixture so that a portion of said fine Particles accumulates in said discrete bed of coarse particles.