Air Pollution Control Equipment

There are a numbers of factors to be considered prior to selecting a particular air pollution control system, and these can be grouped into three categories, which are:

1) Environmental: equipment location, available space, ambient condition, availability of adequate facility (i.e. power, water, etc.) and maximum allowable emission standards

2) Engineering: Contaminants characteristics (physical & chemical properties, concentration and size distribution), gas stream characteristics (volume flow rate, temperature, pressure, corrosivity, toxicity, reactivity, combustibility etc.) and design & performance characteristics of the particular control system

3) Economics: Capital cost, Operating Cost and Expected equipment lifetime

Basically, the air pollution control system can be divided to three categories, which are to tackle the emission of:

1) particulate matter

2) vapour/gases pollutant

3) both (1) & (2)

In order to control the emission of particulate matter, there are several type of particular control system can be apply such as, mechanical collectors (cyclone/multicyclone dust collector), bag filter/fabric filter dust collector, electrostatic precipitator, and venturi wet scrubber or combination thereof.

Differ to control the emission of vapour/gases pollutant, these kind of control system can be used, adsorption system (packed bed/plate column/wet scrubber), adsorbers (activated carbon etc.), combustion systems (thermal, catalytic, etc.), condensers and combination thereof.

While, for the combination vapour/gases and particulate matter emission control system that can be implement are either separate system mode like various combinations of gaseous and particulate equipment or single system mode such scrubbing systems, combustion systems, wet electrostatic precipitators and fabric filter (where a precoat has been added for gases adsorption on the bags)