Detailed
Designs for Gas Scrubbers
On a number of occasions a manufacturer of odour control
equipment has commissioned RPA to carry out both the chemical
engineering designs and the detailed sizing calculations for
a number of gas scrubbers where the circumstances of the design
were not reasonably standard. These have included situations
where there were complex chemical equilibria or where the
odours have been particularly sensitive.
As part of the project for the combustion and recovery of
used sulphuric acid (which is referred to in the Engineering
Services section) RPA prepared detailed designs for a
quench and scrubber unit for the hot off-gases. This unit
had to provide not only for a normal SO2, SO3, NO2 and acid
mist removal function, but also, during process upset conditions,
it had to provide greatly increased acid vapour removal.
Scrubber & Quench Tower Unit
The inherent robustness and environmental safety that the resultant designs
brought to the overall process were a very important feature within the
negotiations for the IPPC Authorisation.
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