Mitsubishi Jukogyo Kabushiki Kaisha

Hidetaka Ono

Wataru Matsubara

Hiroki Honda

Shizuo Yasuda

Noriyuki Akasaka

Norihiko Orita

Yoshitaka Ikeda

Etsuko Kinoshita

Hisataka Yonezawa

Jyunichi Kondo

Akira Sensyu

Masaharu Kira

The present invention aims for the object thereof at preventing unburnt gas and noxious gas components from being generated in a refuse incinerator, and provides a combustion control method by which it is arranged so that a feeder (2) and a stoker (3) are not only controlled so as to keep evaporation (S1) of the boiler at a target value thereby to achieve stabilized combustion extending over a long period of time, but also feed water quantity (S2) and the like from a boiler water pipe section (2) forming a combustion chamber (6) are detected, and the rate of overfire air quantity to main combustion air quantity to a lower part of the stoker is controlled at a constant total gas capacity so that the fluctuation width of the feed water quantity (S2) falls within a set range.

Combustion control method of refuse incinerator

A control system for a refuse shredder composed of a refuse feeding section and a refuse shredding section detects a stagnating state of refuse to adjust the feed rate, detects idling of the feeding section and restores it to a proper state, detects a tendency of tripping of a shredder drive motor and prevents such tripping, and generally automates an operation of the shredder. The system includes an image pickup device for picking up an image of a refuse inlet of the shredder, an image processor for binary-coding an image signal generated by the image pickup device to obtain a characteristic quantity of the refuse, and control calculator for calculating and outputting a control signal for controlling the feeding section and the shredding section on the basis of the characteristic quantity of the refuse obtained by the image processor. Preferably, the system further includes a current detector for detecting a drive current value of a drive motor for the feeding section and the shredding section, and the control calculator calculates and outputs a control signal for controlling the feeding section and the shredding section on the basis of the above-mentioned characteristic quantity of the refuse as well as the detected drive current value of the drive motor.

Operation control system for a shredder

Improvements in a reaction vessel which includes a lower cylindrical section conically reduced in diameter toward the outlet end and an upper cylindrical section conically increased in diameter from the inlet end, the two sections being joined endways, and wherein a gas stream is tangentially introduced into the lower cylindrical section and is caused to react, inside the upper section, with a reactant liquid injected into the latter. A horizontal partition is provided within the lower cylindrical section conically reduced in diameter to divide the space therein into an upper and a lower spaces, whereby the gas stream is divided and separately passed, in a spiral flow from the upper space and in a piston flow from the lower space, into the upper cylindrical section.

Reaction vessel

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Yokohama, Japan

Hidetaka Ono