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Effective Air Pollution Control Engineering Methods

Learn about Henry's Law, Packed Bed Scrubbers, Electrostatic Precipitators, and removal efficiencies in industrial sites.

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Effective Air Pollution Control Engineering Methods

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

  2. 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]

  3. Packed Bed Scrubber

  4. Impingement separators (impactors)

  5. Lb Lc

  6. Electrostatic Precipitator (ESP)

  7. 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

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

  9. ..................poor ! ..................excellent

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