FLUIDIZED BED REACTOR AND PROCESS FOR THE OPERATION OF A FLUIDIZED BED REACTOR

摘要

Fluidized Bed Reactor and Process for the Operation of a FluidizedBed Reactor.ABSTRACTA process for the operation of a circulating fluidized bed re-actor is described by which a solid particle material comprising asolid reactant material in particular carbonaceous fuel is introducedinto the lower part of the reactor and is formed to a fast bed bymeans of a fluidization gas containing a gaseous reactant materialin particular oxygen introduced into the reactor bottom, while non-reacted particles are removed from the reactor top and recirculatedto the bed.By removing a predetermined fraction of the solid particle ma-terial being present in the reactor from at least one site positionedbelow the reactor top subjecting it to thermal treatment and recir-culating it to at least one other lower positioned site of the bedenhanced possibilities for process optimalization are achieved.Furthermore a fluidized bed reactor is described comprising avertical reactor chamber (1) a first inlet (9) in the lower part (2)of the reactor chamber for introduction of solid particle materialand a second inlet (22) in the bottom of the reactor chamber forintroduction of fluidization gas and an outlet conduit (28) in theupper part (4) of the reactor chamber for removal of reactor mate-rial.Such a reactor may be used for performing the described pro-cess when at least one further outlet conduit (5, 3a, 3b, 4) forsolid particle material is provided between the first inlet (9) forsolid particle material and the outlet conduit (28) for reactor mate-rial which outlet conduit (5, 3a, 3b, 4) via cooling or heatingmembers (21) leads back to the reactor as at least one further inletfor solid particle material.