The heat exchange system of the present invention comprises in combination: (a) a
fluid bed dryer such as described above, (b) means for conveying a slurry comprising liquid and combustible waste solids into the drying chamber of said dryer, (c) a reactor or incinerator have a feed inlet, a reaction section, and a vapor exhaust port, (d) conveyor means for transferring solids from the
fluid bed dryer feed outlet to the feed inlet of said reactor, (e) conduit means connecting the vapor exhaust port of the reactor to the gas inlet of the heating jacket of the fluid bed dryer, and (f) means for providing fluidizing gas to both the reactor and the drying chamber of the
fluid bed dryer.
The
fluid bed dryer of the present invention comprises a drying chamber and a heating jacket contiguous with the drying chamber. The drying chamber and the heating jacket are each adapted to contain a bed of fluidizable particulate heat transfer material positioned in their lower portions and both the drying chamber and the heating jeacket have a fluid gas inlet and an exhaust gas outlet. The drying chamber also has a feed inlet and a feed outlet. Preferably, the feed outlet is vertically spaced from the feed inlet and a conveyor means extends from the feed outlet into the drying chamber for transferring dried solids from the drying chamber to the feed outlet.
A
fluid bed dryer comprising a drying chamber and a heating jacket contiguous with said drying chamber, said drying chamber and said heating jacket each adapted to contain a bed of fluidizable particulate heat transfer material and each having a fluid gas inlet and an exhaust gas outlet, said drying chamber having a feed inlet and feed outlet, said feed outlet vertically spaced from said feed inlet, and a conveyor means extending from said feed outlet into the drying chamber for transferring dried solids from the drying chamber to said feed outlet.
The heat exchange system of claim 9 in which the
fluid bed dryer has a vertical, cylindrical drying chamber and the heating jacket comprises a cylindrical chamber surrounding said drying chamber.
