Venturi/Impinjet® Combination Scrubber Removes HCI &
Particulate from Aluminium Refining Furnace Exhaust
A combination Venturi scrubber / Impinjet® scrubber contains
stack emissions to 99.999% efficiency from two aluminium furnaces and a small
refining station at this aluminium plant.
The scrubber system removes both hydrochloric acid vapours and particulate
from the nitrogen gas streams vented from the furnaces. Acid vapours and
particulates are evolved when salts are injected into the molten aluminium to
clean and de-gasify it.
The scrubber system receives hot gases which may be as hot as 899°C,
from the furnaces and contacts the gas with atomised scrubbing solution
in the venturi. The venturi removes the majority of the particulate and
the acid gases. In addition, the gas stream temperature is lowered to
approximately 120ƒF.
The acidic scrubbing solution drains into tanks where it is
neutralized. Most of the neutralized solution is re-circulated back to
the venturi scrubber, however, a small portion is discharged
continuously to an effluent treatment plant.
Coupled to the venturi is a Sly Impinjet gas scrubber. It acts as a
final polishing stage for acid gas removal. The scrubbed flue gases are
then vented to the atmosphere through a tall stack.
If you are unsure of which wet scrubber is right for your exact application, use
our
Wet Scrubber Questionnaire
and we'll work out the correct solution to your needs.
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