Abstract:
PROBLEM TO BE SOLVED: To provide a biomass-grinding device which efficiently, stably grinds a biomass raw material; and to provide a system for combusting a mixture of biomass and coal.SOLUTION: The biomass-grinding device includes: a grinding device body 13 having a raw material-feeding pipe 12 which feeds a biomass raw material 11 from above in a vertical axis direction; a grinding table 14 on which the biomass raw material 11 is placed; a driving part 15 which rotatively drives the grinding table 14; grinding rollers 16 which operate in connection with the rotation of the grinding table 14 and grinds the biomass raw material 11 by means of pressing force; a blower means which generates a rising air current which flows, in an upward direction, from below the side of the external periphery of the grinding table 14 and spouts out a carrier gas 18 which carries the ground biomass raw material 17 by the air current; and a classifier 19 which classifies the ground biomass raw material 17 which accompanies the carrier gas. In addition, a plurality of radial table grooves are formed on the surfaces of the table liners 14b of the grinding table 14 from their internal peripheral parts toward the external edge sides thereof, and the front ends of the grooves are located up to the vicinities of the center parts of the table liners.
Abstract:
[Problem] To provide a rotating classifier which can keep classification performance high and which can prevent blockages caused by biomass and the like.[Means for Resolution] The rotating classifier is characterized in that: comb teeth-like protrusion portions protruding toward a fixed member side are provided on top of rotary classification fins at intervals along the circumferential direction of the rotating classifier fins; a first gap is provided between an upper end portion of each of the comb teeth-like protrusion portions and a lower surface of the fixed member; a second gap formed between a protrusion portion and a protrusion portion adjacent to the protrusion portion is connected to the first gap; and an air stream flowing from the radial outside to the radial inside of the comb teeth-like protrusion portions through the first gap and the second gap is formed due to the rotation of the rotary classification fins.
Abstract:
[Problem] To provide a rotating classifier which can keep classification performance high and which can prevent blockages caused by biomass and the like.[Means for Resolution] The rotating classifier is characterized in that: comb teeth-like protrusion portions protruding toward a fixed member side are provided on top of rotary classification fins at intervals along the circumferential direction of the rotating classifier fins; a first gap is provided between an upper end portion of each of the comb teeth-like protrusion portions and a lower surface of the fixed member; a second gap formed between a protrusion portion and a protrusion portion adjacent to the protrusion portion is connected to the first gap; and an air stream flowing from the radial outside to the radial inside of the comb teeth-like protrusion portions through the first gap and the second gap is formed due to the rotation of the rotary classification fins.
Abstract:
A method and an apparatus for treating and utilizing waste materials and mixtures thereof in multiple steps resulting in a high-yield utilization particularly of organic components of the waste for generating kinetically useful energy. The waste materials are sorted by classes, principally between organic and non-organic, e.g. metallic and ceramic, substances. The organic substances are briquetted and gasified, the produced gas being utilized for the direct and indirect generation of electricity and heat.