Abstract: A centrifugal filter separator includes a detachable tubular screen disposed between an annular filter and the inner peripheral surface of a basket, the screen having an annular flange detachably connected to an open end of the basket from the outside of the basket. The centrifugal separator having such detachable screen is applicalbe to centrifugal separation of various materials.

Abstract: A fluidized-bed granulating apparatus which granulates powdered or granular raw materials by centrifugally tumbling and fluidizing them on a rotor rotating in a container and by supplying a gas from a lower portion of the container. The container and the rotor are supported by a horizontally movable wagon, are vertically and movably supported by a lift-up device, and can be attached to and separated from the lower portion of a body of the fluidized-bed granulating apparatus. The rotor is rotated by a motor provided outside the granulating apparatus, and the driving force of the motor is transmitted from the output shaft thereof to the rotor through a universal joint, a transmission shaft, and a reduction gear. When the container and the rotor are attached to and separated from the lower portion of the body of the graulating apparatus, the universal joint is similarly attached to and separated from the transmission shaft.

Abstract: A continuous granulator includes a granulator body for continuously processing powdered materials into granules, and a screw conveyor for discharging the produced granules from the granulator body, the screw conveyor including a pneumatic classifier for separating or classifying the produced granules while they are being conveyed. The pneumatic classifier includes a porous lower portion of the screw conveyor which permits passage of streams of pressurized air therethough into the interior of the screw conveyor. With this construction, discharging conveyance of the produced granules and classification of the produced granules can be carried out concurrently at the same station and hence the granules of a uniform grain size can be produced at an increased rate.

Abstract: A fluidized-bed dryer includes a vertical fluidized-bed drying chamber divided into at least two sections by at least one vertical partition. Each of the drying chamber sections has an inlet through which wet material is to be introduced into the respective drying chamber section, an outlet through which dry product is to be discharged from the respective drying chamber section, and a horizontal porous supporting shelf for preventing the wet material in the respective drying chamber section from falling during drying. Each drying chamber section is joined with a heated-air chamber through which heated air is introduced into the respective chamber section through the supporting shelf. The individual drying chamber sections operate batchwise repeatedly in staggering manner and independently of each other.

Abstract: A method of processing soybeans is disclosed which comprises heating raw soybeans in the absence of added water with superheated steam under atmospheric pressure, and cooling the resulting beans by exposure to the atmosphere. This method permits removing any offensive smell fully from the beans without impairing the natural flavor or taste of the beans.

Abstract: In a horizontal fluidized-bed dryer, at least one rotatable hollow axle extends horizontally through a drying chamber over a porous supporting shelf and has a heat transfer tube assembly mounted on and around the hollow axle for fluid communication therewith. A spiral or screw-shaped blade is mounted on the heat transfer tube assembly so as to be disposed around the periphery of an imaginary cylindrical figure generated by rotation of the heat transfer tube assembly about the hollow axle. This blade serves to push large particles of wet feed on the supporting shelf from the inlet side to the outlet side as the hollow axle and thus the heat transfer tube assembly are rotated.

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 an incinerator for sludge, an amount of air, ranging from a half to one times as much as a theoretical amount of air needed to combustion of the sludge, is gently blown from at least one arm to the sludge while the latter is being stirred by the stirring arm, thereby burning the sludge mildly. Reducible exhaust gas produced during the incineration is mixed with added air for a secondary combustion.

Abstract: An incinerator for combusting sludge or the like is supplied with combustion air which is mixed with 5-40% by weight of a high-humidity, low-oxygen-concentration gas for adjustment of the excess ratio of combustion air and control over burning of nitrogen oxides in the incinerator. The gas is supplied from a predrier for drying the sludge or comprises a gas discharged from the incinerator.