(under subclass 165) Processes including the step of removing the solids from the gravitating bed in such a manner that the solids are withdrawn uniformly over the horizontal cross-section of the bed.
(1) Note. The technique provided for in this subclass prevents a flow of solids at some point within the bed at a greater velocity than at other points as might be the case if solids are withdrawn from a single centrally located point and the adjacent solids fill the gap created. Such techniques as baffling the flow of solids withdrawn or providing multi-point withdrawal of solids prevent the nonuniform flow within the bed by providing a uniform withdrawal of solids.
