Operation
mode of a
spraying
scrubber: The
spraying
scrubber is dedicated to
treat the
air containing soluble pollutants (acids, ammonia...). The air is going
counter-current to the sprayed liquid and are solubilised and
neutralized into
it (chemical reaction).
The spraying ramps composed of nozzles are placed at the top of the
scrubber. They are
producing fine and dense drops in order to do the
gas/liquid
transfer.
Once the pollutants are solubilised, they will be degraded and
neutralized
inside le liquid by some chemical products (reagents). The scrubbing
liquid will
be emptied periodically, send to the water
The
scrubber can be
realized in PPH or HDPE. The diameter of the
scrubber,
the type and height of packing, will be design regarding the
temperature of the
gas, the type of pollutants and the airflow to treat. The
scrubber ends
by a
droplet separator stopping the drops pulled by the gas.
This process uses chemicals. The operating conditions are really
flexible:
high temperatures
discontinue process, high concentrations of pollutants.