Why are some industrial chimneys so high, like what’s the difference if it’s 150 or 300 meters?
In: Engineering
Back before scrubbers, dilution of industrial waste gas was the gold standard.
Taller stacks reduce the concentration of regulated gases at ground level.
That’s why smelter stacks are the record holders – smelters produce more tons of sulfuric gases than metal.
Even in the pre Clean Air Act days there were rules about killing all the vegetation downwind of the smelter.
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