Abstract:
A fluid bed disposal method and apparatus are disclosed including a secondary bed/elutriation arrestor obstruction of labyrinth construction in the fluid bed reactor having lower and upper vertically spaced-apart perforate retention plates between which are positioned at least first and second vertically spacedapart grates with the grate bars of the grates staggered with respect to one another. The lower surface of the bars of the lower perforate plate is disclosed as stepped between at least two horizontal surface locations. At least two fluid bed/elutriation arrestor labyrinth obstructions spaced apart above the bed of granular material are disclosed.
Abstract:
Method and apparatus are disclosed for feeding solid waste to a fluid bed disposal apparatus wherein solid waste is separated by air classification into a heavy low fuel valve fraction which is segregated from the fluid bed apparatus and a lighter particle fraction which is conveyed to an inertial separator stage via a conveying gas stream. In the inertial separation stage the lighter fraction solid waste is separated from the conveying stream and delivered to a storage area from which it is drawn and introduced via an air-lock feed valve to a fluid conduit and into the fluid bed chamber.
Abstract:
Method and apparatus are disclosed for separating fluid bed granular particles and flyash which are entrained in the exhaust gases of a fluid bed reactor for return of the granular material to the fluid bed. The separation is accomplished in at least a two-stage inertial separation method and apparatus wherein the granular particles are separated in the first stage and flyash is separated from the exhaust gases in the second stage. Flyash separated from the exhaust gas with the granular particles can be separated from the granular particles and directed to residue storage. Heat exchange is disclosed between the exhausting combustion gases in the inertial separators and air being directed to the fluid bed for fluidization.