A waste disposer comprising a primary dehydrating chamber, a grinding device, a secondary dehydrating chamber, and a storage chamber. The primary dehydrating chamber is adapted to allow waste to be heated therein to partly dehydrate the waste. The primary dehydrating chamber has: a first waste inlet for receiving the waste, a first vapor outlet for exhausting vapor from the waste, a drainage outlet for draining free liquid from the waste, and a first waste outlet for outputting the partly dehydrated waste. The grinding device is adapted to receive the waste from the first waste outlet and grind the waste to reduce the size thereof. The secondary dehydrating chamber is adapted to allow the ground waste to be heated therein to further dehydrate the waste. The secondary dehydrating chamber has a second waste inlet for receiving the ground waste, a second vapor outlet for exhausting vapor from the waste, and a second waste outlet for outputting the further dehydrated waste. The storage chamber is adapted to receive the waste from the second waste outlet and store the waste in the storage chamber.

A system and method for staged drying of temperature sensitive materials, the method comprising the following steps. Heated air is blown into a duct and solids are introduced into the duct at an elevated position along a vertical portion of the duct. The heated air and solids mixture is then transported along the duct for a desired retention time with adequate initial flash heating of the solids and then a gradual cool down of the solids. The solids are at an elevated temperature beyond the ambient dewpoint with evaporative cooling taking place. The solids and air mixture is then transported in the duct to a cyclone, where the solids are removed from the air. The air is exhausted out of the cyclone by an exhaust duct, and the solids are collected from the cyclone in a container.

A waste disposer comprising a primary dehydrating chamber, a grinding device, a secondary dehydrating chamber, and a storage chamber. The primary dehydrating chamber is adapted to allow waste to be heated therein to partly dehydrate the waste. The primary dehydrating chamber has: a first waste inlet for receiving the waste, a first vapor outlet for exhausting vapor from the waste, a drainage outlet for draining free liquid from the waste, and a first waste outlet for outputting the partly dehydrated waste. The grinding device is adapted to receive the waste from the first waste outlet and grind the waste to reduce the size thereof. The secondary dehydrating chamber is adapted to allow the ground waste to be heated therein to further dehydrate the waste. The secondary dehydrating chamber has a second waste inlet for receiving the ground waste, a second vapor outlet for exhausting vapor from the waste, and a second waste outlet for outputting the further dehydrated waste. The storage chamber is adapted to receive the waste from the second waste outlet and store the waste in the storage chamber.

A system and method for staged drying of temperature sensitive materials, the method comprising the following steps. Heated air is blown into a duct and solids are introduced into the duct at an elevated position along a vertical portion of the duct. The heated air and solids mixture is then transported along the duct for a desired retention time with adequate initial flash heating of the solids and then a gradual cool down of the solids. The solids are at an elevated temperature beyond the ambient dewpoint with evaporative cooling taking place. The solids and air mixture is then transported in the duct to a cyclone, where the solids are removed from the air. The air is exhausted out of the cyclone by an exhaust duct, and the solids are collected from the cyclone in a container.

The invention is based on a star-shaped rotation dryer (1) for segmenting a fluidizing chamber 4) into process compartments (11), whereby the star-shaped rotation dryer (1) is pivot mounted and features dividing wall (9) or similar for the conveyance of solid particles along a conveyance path, whereby a flow-receiving base (10) is detachably mounted below the star-shaped rotation dryer (1); the invention further relates to a method of spray-coating solid particles for the purpose of agglomeration, coating, layering, spray granulation or pelletization, whereby the retention time spectrum of the solid particles inside the fluid-bed apparatus (2) has a margin of at least 1:3 (alternatively tRTD903 tRTD10).