Abstract: A gas distributing floor for use in a circulating fluidized-bed dryer, incinerator or the like includes a number of elongate baffling plates joined at opposite edges with, and disposed circumferentially between, a circular disc and an annular plate in overlapping relation to one another. Each of the baffling plates has a pair of upper and lower portions and an intermediate portion extending obliquely between the upper and lower portions, the upper portion of each baffling plate overlying the lower portion of an adjacent one of the baffling plates so as to define therebetween an elongate orifice for the passage therethrough of gas.

Abstract: In a rotary drum type device for coating granular solids of the type having a rotary drum with a perforated cylindrical wall section, a supporting ring surrounding the cylindrical wall section of the drum for rotatably supporting the same, and inlet and outlet duct means defined within the supporting ring and opening to the perforated cylindrical wall section of the drum in such a way that the hot air or the like is directed from the top of the drum toward a tumbling bed of granular solids formed within the drum, the perforated cylindrical wall section is so divided that the area which faces the opening of the inlet duct means will not face the opening of the outlet duct means and vice versa, whereby the coating agent which is deposited on the walls of the small holes of the cylindrical wall section facing the opening or inlet of the outlet duct means can be prevented from being separated and falling into the drum by the hot air or the like flowing through the opening of the inlet duct means into the drum.

Abstract: A rotary drum type apparatus for applying a coating to tablets including a rotary drum supported by a support frame for receiving a body of tablets to be coated by spraying with a solvent. The drum is inclined through about 10-20 degrees in such a manner that its front surface is turned upwardly, and an air inlet tube and an air outlet tube are connected to the support frame in positions slightly displaced toward the rear surface of the support frame from the center line of the support frame extending perpendicular to the center axis of the drum. The support frame cooperates with an outer periphery of the drum to define an air suction duct disposed on the front side of the support frame and an air exhaust duct disposed on the rear side of the support frame so that a smooth flow of hot blast through the drum can be obtained.