Patent ID: 6069012
Filing Date: 2000-05-30
Classification: B01J,G01N

Abstract:
A method for studying the effects of commercial fluidized bed processes in a laboratory fluidized bed apparatus, said method comprising:providing a reactor having a top head and a bottom conical head;charging said reactor with a mass of solid material to form a material bed within the reactor;providing a source of heat for maintaining said reactor and said material bed at a predetermined temperature;providing at least two axial injectors positioned to enhance circulation of the material bed;wherein said at least two axial injectors comprise:a first feed injector disposed at the top head and comprising an upper fluidization gas line in the form of an outer tubular member and a feed line connected to the outer tubular member and extending axially therethrough, anda second feed injector disposed at the bottom conical head to introduce fluid to the material bed;positioning the at least two axial injectors to predetermined axial positions within the material bed; andintroducing fluid through said at least two axial feed injectors into the material bed, wherein at least one of the injectors is a removable injector axially extending through the associated head to introduce fluid at variable locations within the material bed.