Air%20Pollution%20Control%20Devices

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Air Pollution Control Devices

• CE 326 Principles of Environmental Engineering
• Prof. Tim Ellis
• January 30, 2009

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Air Pollution Control Devices

• A________ tower
• B__________
• C____________ Separator
• aD___________ Bed
• E______________ precipitator
• V___________ scrubber

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Electrostatic Precipitator

• w____ in t____ or wire and p____ configurations
• wet or dry, wet cleaned by w______ s____, dry by
  rapping, can be cleaned while in service
• c_______ wire imparts an electrical charge (neg),
  particles are attracted to charged (pos)
  collecting plates
• high p__________ removal efficiencies possible

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Venturi Scrubber

• velocity of gas is a_________ by a factor of four
  in the throat section where nozzles inject water
  or solution
• high velocity causes a__________ of liquid
• pressure drop following the t________ section
  creates a lot of turbulence resulting in good
  intermixing
• requires s_________ (e.g., cyclone) following
  venturi to collect particles and liquid

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T___________ Incineration
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