Electrostatic Precipitator Wire-Pipe Type

Many older ESPs are of the wire-pipe design, consisting of a single tube placed on top of a smokestack. Dry pipe-type ESPs are occasionally used by the textile industry, pulp and paper facilities, the metallurgical industry, coke ovens, hazardous waste incinerators, and sulfuric acid manufacturing plants, among others, though other ESP types are employed as well. 

Wet wire-pipe ESPs are used much more frequently than dry wire-pipe ESPs, which are used only in cases in which 

Typical gas flow rates for dry wire-pipe ESPs are 0.5 to 50 sm3/sec (1000 to 100,000 scfm). 

Dry wire-pipe ESPs can operate at very high temperatures, up to 700°C (1300°F). Operating gas temperature and chemical composition of the dust are key factors influencing dust resistivity and must be carefully considered in the design of an ESP. 

Typical inlet concentrations to a wire-pipe ESP are 1 to 10 g/m3 (0.5 to 5 gr/scfm). It is common to pretreat a waste stream, usually with a wet spray or scrubber, to bring the stream temperature and pollutant loading into a manageable range. Highly toxic flows with concentrations well below 1 g/m3 (0.5 gr/scfm) are also sometimes controlled with ESPs. 

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WET ELECTROSTATIC PRECIPITATOR (ESP) WIRE-PIPE TYPE AND OTHERS... 

Wet Electrostatic Precipitator (ESP) Wire-Pipe Type and Others... 

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