Air pollution control engineering   Part 2. Air pollution control engineering Gaseous Particulates

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CA = concentration of A, [mol/L] Henry's Law states that the amount of a gas that dissolves into a liquid is proportional to the partial pressure that gas exerts on the surface of the liquid. where, CA = concentration of A, [mol/L] KH = equilibrium constant (Henry's Law constant), [mol/L-atm] pA = partial pressure of A, [atm] Flue gas desulfurization

Packed Bed Scrubber s

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Impingement separators (impactors)

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Lb Lc s

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Electrostatic Precipitator (ESP)

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Design of Electrostatic Precipitators The efficiency of removal of particles by an Electrostatic Precipitator is given by η = fractional collection efficiency w = electrokinetic velocity (drift velocity), m/s. A = available collection area, m2 Q = volumetric flow rate m3/s s

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In practice, on a real industrial site: What are the characteristic removal efficiencies for each implemented step ? s [refer also to the technical visit at Brussels-Energy incineration plant]

s ..................poor ! ..................excellent