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The gas is accelerated in the venturi. The liquid is sprayed just above
the throat of the venturi covering the entire gas path.
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The contaminants impact on the finely sprayed droplets and become heavier.
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The SO2 reacts with the alkaline solution and gets consumed.
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The gas and liquid flow concurrently downwards into a cyclonic mist
eliminator.
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The heavier contaminant particles and precipitated reacted particles are
separated by cen
-
The gas to be scrubbed is introduced in the venturi and scrubbed by
alkaline liquid solution.
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trifugal action in the cyclone.
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The clean gas leaves the cyclone from the top and is exhausted through
I.D. Fan to chimney/stack.
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Back pressure control loop ensures constant pressure for smooth running of
the equipment on which desulphurization system is installed.
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The I.D. Fan provides the necessary gas flow at designed pressure drop.
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The scrubbing liquid separated from cyclone is collected in the
circulating tank.
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The pH of scrubbing liquid falls down as alkali is consumed.
-
The pH control loop provided senses the pH continuously and intakes the
fresh alkaline solution to maintain the pH.
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The water if evaporated by the hot gases is made up by tank level control
loop.
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The liquid passes through filter where solids get separated and liquid is
given to circulating pump.
-
The circulating pump pumps the liquid to nozzle for atomization.
The system can be semi-automatic or fully automatic as
per requirement and are explained subsequently.
