Fluid bed apparatus and method for processing a particulate material

摘要

The fluid bed apparatus has a chamber (1) inciuding a plenum (11) and a perforated base plate (3) is located above the plenum (11). An inlet (2) and an outlet (7) are provided for process gas. A discharge opening (8) has a lower edge (8a) and an upper edge (8b) and defining a height and an opening area, the base plate (3) being positioned above the lower edge (8a) of the discharge open ing (8) such that the open ing area of the discharge opening (8) is divided into an opening area (Aa) below the base plate (3) and an opening area (Ap) above the base plate (3).