Abstract:
PROBLEM TO BE SOLVED: To provide a dust remover of an air heating device for efficiently removing dust deposited on the upper and lower face sides of heat exchange pipes. SOLUTION: The air heating device comprises an upper side supporting frame 20 and a lower side supporting frame 21 provided at the upper and lower parts of a pipe group 11 having a number of heat exchange pipes 1a arranged in certain column spaces S1 and in certain row spaces S2 in an air heating chamber through which combustion gas passes, a plurality of vertical members 30 vertically passing through the column spaces of the pipe group in the state of being connected at their upper and lower ends to the upper side supporting frame and the lower side supporting frame, respectively, horizontal members 40 passing through the row spaces of the pipe group perpendicularly to the extending direction of the heat exchange pipes in the state of being supported by the plurality of vertical members, and a reciprocating drive means 5 for reciprocating the upper side supporting frame and the lower side supporting frame in the extending direction of the heat exchange pipes to reciprocate the vertical members and the horizontal members in the extending direction of the heat exchange pipes. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a scratching-off device of molten slag in a garbage incinerator for safely and efficeiently removing sticking by mechanically removing the sticking without removing the sticking of the molten slag by manual work by a worker. SOLUTION: This device is a garbage incinerator for discharging garbage as the molten slag. A sheathing board 16 is arranged on the tip of a slag discharge passage 14 formed in an incinerator bottom part. The garbage incinerator forms a cutout part 17 for overflowing and discharging the molten slag on the upper edge of this sheathing board, and is provided with a scratching member 5 for sliding by abutting to a front face of the sheathing board and a driving means (an air cylinder 6) for sliding the scratching member in the lateral direction along the sheathing board so as to pass through a position N of the cutout part. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a combustion gas treating method in a plant for gasifying and melting rubbish, or the like, in which the heat efficiency is enhanced, the heat energy incoming from a boiler is used effectively and the generation of dioxins is restrained to the utmost. SOLUTION: This combustion gas treating method comprises two steps. One step is to control the flow rate of cooling water at a cooling tower 4 so that the temperature of exhaust gas flowing to a bag filter type dust collector 5 is kept at 200-230 deg.C by detecting the temperature of the exhaust gas flowing to the collector 5 and feeding back the detected result of the exhaust gas temperature. Another step is to constitute the collector 5 with a catalytic bag filter having the ability to decompose dioxins at high temperature and filter the exhaust gas cooled to 200-230 deg.C.
Abstract:
PROBLEM TO BE SOLVED: To provide an improved gasification method in a pyrolytic gasification and melting furnace, capable of providing a high formation efficiencies of CO and H 2 by efficiently promoting the water gas shift reaction of a fine carbonized material (char) separated from the gas generated in the pyrolytic gasification and melting furnace while using the carbonized material as a heat source necessary for the gasification. SOLUTION: The improved gasification method in a pyrolytic gasification and melting furnace where waste fed from the furnace top is pyrolyzed to withdraw the formed gases, and a carbonized material (char) is molten in the furnace bottom comprises separating the fine carbonized material (char) contained in the formed gases, humidifying the carbonized material (char) to a water content of 2 to 60%, and blowing the humidified carbonized material (char) into the space of the furnace. COPYRIGHT: (C)2007,JPO&INPIT