Hydrodynamics of catalyst in conical spouted beds

The applicability of conical spouted bed reactors for the thermal catalytic treatment of wastes has been determined by means of a hydrodynamic study with catalyst solids (fine particles) in different experimental conditions. The ranges of the geometric factors of the conical contactor and of the contactor–particle system for stable operating conditions have been established at gas inlet temperature range of 25–500°C in order to achieve the stability. The validity of the correlations already proposed for calculation of minimum spouting velocity of fine particles at room temperature has been proven at high temperature (at a range of gas inlet temperatures between 25 and 500°C).