Our Fuji-Plant is located in Fuji-City, the central part of Japan, near Mt. Fuji on the north side, near Suruga Bay on the south side. Our Plant is also a main production factory which has two sets of NO. 8 · 10 M/C and is a large-scale factory with the quantity of production representing Japan.
In addition, we have a fluidized-bed type garbage incineration plant for the waste generated at a materials process which capability is BD 40 t/day (includes waste heat boiler with max flow rate 5.7 t/h). Steam from the waste heat boiler had been controlled at constant pressure (1.75 Mpa) by the valve in drum to be used for dry process of M/C line. This time we tried to improve to save energy by another method. There we observed the electricity to look into the fan motor which needs much energy in some facilities.
We present a new method as below of more effective use for steam that 2 steam turbines are installed and connected to the FDF (110 kW-2P) motor and IDF (90 kW-4P) motor to assist the power. It brought the good effects to save energy.
This system has very superior points in that we can use the rest of steam effectively and can save big energy under rated condition. In addition, it also has the characteristics of easy maintenance and easy start-up.
Now although the capability of 100% cannot be demonstrated from short of rated steam condition, we will be able to save the energy for the amount of electric power 130 kW/h equal to 10,000,000 yen if the combustion of an incinerator would be stabilized, the amount of steam would be secured and could be run during a year.
We are willing to try more to save energy in the near future because the increase of the energy cost gives the large influence to the factory profit.
We would like to improve factory employee's consciousness further in the future and to promote the energy-saving activities.
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