|Tokyo, April 13, 1998 --- Honda Motor Co., Ltd. has announced that from this month it will begin using a new type of waste incinerator at the company's Suzuka Factory, which greatly reduces the amounts of dioxins being discharged among waste gases. The introduction of this new equipment reflects a new Honda policy to aim for zero pollutant levels in its factory emissions. An upgrade of existing equipment, the new incinerator is the first in the world to employ a method that uses dioxin degradation catalysts. Dioxin discharge concentrations of less than 0.1 ng TEQ/Nm3 place the plant at the top of world rankings in this regard.
The equipment also uses the steam collected by waste heat boilers and channels
it to drive inductor fans, which in turn drive a steam turbine. The steam is then
returned to the steam lines used in the factory. This arrangement is very effective
at saving energy.
Honda plans to introduce similar technological modifications to all its incineration
equipment in all of its other manufacturing plants in Japan, and thereby reduce
the concentrations of dioxin waste gases being discharged to an absolute minimum.
As one of the most poisonous and carcinogenic waste substances produced during
incineration processes, dioxins are subject to strict regulations worldwide. In
Japan they are controlled substances under the Prevention of Atmospheric Pollution
Act. Enacted on December 1, 1997, this law stipulates maximum legal amounts of
dioxin discharges from incinerators, and also regulates the timing of incineration
processes expected to produce dioxin by-products.
Outline of new waste incinerator:
||rotary kiln and stoker
|Waste gas processing method
||bag filter (injections of slaked lime and activated charcoal)
plus catalyst (Ti-V honeycomb, cubic volume 6 m3)
|Waste gas processing targets
||Fine dust: 0.1 g/Nm3 NOx: 80 ppm SOx: K-value = 2 HCL: 60 g/Nm3
Dioxins: 0.1 ng TEQ/Nm3
|Volume of steam recovered
||7.7 tons/hour, 18 kg/cm2