A Review of Methodologies Used to Continuously Monitor Particulate Emissions In Wet Stacks
Industrial plant operators in Europe, US and
other industrialised countries are
increasingly interested to continuously
monitor stack emissions. This serves the
double purpose of proving that a plant?s
emissions are below agreed emission
limits and also giving the plant
operator feedback on the performance
of arrestment plant, so that fault
conditions can be quickly detected and
hence emissions minimised.
Wet stacks, which are categorised as
those in which there are water droplets
or mist in the flue gas, are more
challenging to continuously monitor
than ?dry or non condensing? stack
conditions since there are the
additional problems of overcoming
interference from water droplets
and the increased likelihood
of instrument fouling causing
errors in measurement.
However, a number of methodologies
have emerged over the past 15
years which are now more widely
available to provide a choice of reliable
compliance measurement or
pragmatic arrestment
plant control for wet
stack applications.