SOLIDS FEED SYSTEM AND METHOD FOR FEEDING FLUIDIZED BEDS

摘要

2110512 9222779 PCTABS00018 The invention provides an improved method and apparatus for feeding solids to a fluidized bed reactor (7). A back pressure control valve (5) regulates the pressure drop between the pressure above a solids column in a standpipe (4) and the pressure in the reactor (7). Solids are fed from the standpipe (4) via a conduit without valve means, the conduit contains a bend of an angle greater than the angle of repose of the solids.