Page 518 - Air Pollution Control Engineering

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Disadvantages Cannot control a high-temperature (>550º F) stream without a precooler Cannot control highly humid stream Special fabric requirements Mechanical collectors required for large (>20 µm) particles High initial capital nvestment Not readily adaptable to changing conditions, particle loading Space requirements greater than for baghouse or Venturi Conditioning agents

removal (i.e.,2–6 in. H 2O compared with Lower pressure drop than venturi for fine PM Control very small (<0.1 µm) PM with high RE Can control sticky, flammable, or corrosive matter Can be very effective, as part of control train Can control sticky, flammable, or corrosive matter Simultaneous collection of VOCs, larger PM, RE is independent of resistivity for Venturi
Point-Source PM Controls by Emerging and Conventional Technologies

Advantages > 40 in. H 2 O for Venturi) Simple to operate Can collect electrically resistive PM Low operating cost Low pressure drop (0.5 in. H 2O) Can collect corrosive or sticky mists Wet ESPs can collect acid gases, PM Low initial investment Little space required Simple to operate, few moving parts with few problems Simultaneous collection of PM and gases RE is indepen

Remediation Incineration Thermal Stabilization/ solidification Materials handling Incineration Thermal desorption Incineration Thermal desorption Materials handling Incineration Thermal desorption Materials handling

Baghouse (fabric Venturi scrubber Packed, spray, or tray tower absorbers

Table 7 Control filter) ESP

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