The characteristic particle mixing, high rate of heat and mass transfe
r and continuity of solid processing are the main advantages of fluidi
zed systems for ultra high temperature operations with dense particula
tes. The association of plasma generators with such systems is in this
paper from various points of view : applications, hydrodynamics, heat
and transfer, chemical engineering. Fluidized and spouted beds reacto
rs are presented as well as the original properties of these systems w
ith respect to classical one.