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Electrostatic precipitators (ESP)

Matti Rinne-Kanto & Mikko Vihanto06I252TAMK University of Applied Sciences

01 July 2009

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This presentation introduces how ESPs workand where they are used

Operational principle

Precipitator types

Applications and conclusion

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This presentation introduces how ESPs workand where they are used

Operational principle

Precipitator types

Applications and conclusion

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A row of electrodes

A stack of metal plates

rstream

leanedair

The precipitators operational principle uses negative voltage

to ionize particlesA negative voltage of severalkVs is applied

Gravity drops particles into

the hopper

The ionized particles movesto the grounded plates

Incomingai

C

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This presentation introduces how ESPs workand where they are used

Operational principle

Precipitator types

Applications and conclusion

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ESPs can be divided into three groups: plateprecipitators, wet ESPs and modern industrial ESPs

Plate precipitators

- Cheapest and most simple

-

- The plate and wire assembly canvary in different solutions

,

reasonable for most applications

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Wet ESPs

- The most expensive and the most complex

- Water helps reducing the electrical

ESPs can be divided into three groups: plateprecipitators, wet ESPs and modern industrial ESPs

- Disposal of the laden water is a problem

make the process more effective

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Modern industrial ESPs

- Sharpened spikes are attachedto maximize corona production

-

ESPs can be divided into three groups: plateprecipitators, wet ESPs and modern industrial ESPs

- Modern automation minimizessparking and avoids damagingcomponents

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This presentation introduces how ESPs workand where they are used

Operational principle

Precipitator types

Applications and conclusion

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ESPs have applications in the field of industryand customer oriented applications

- Cleaning combustion gases and reducing VOC emissions at

different kind of factories

Industry

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- Electrostatic channel filters

Used on ventilation machines

Limitations:

- Need of maintenance(cleanin , etc.)

ESPs have applications in the field of industry andcustomer oriented applications

- Electrostatic air cleaners

- Maximum air capacity

Removes indoor impurities at99,8 % efficiency

Used on offices and large rooms

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+ Can be used in a wide area in

industry and in other applications

+ Operational principle is simple

ESPs have advantages anddisadvantages

- Efficiency is dependent of theelectrical properties of the particles

- Limitations of usage,maintenance and production

+ Good example of a device designed byelectrical engineers to help the environment

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This presentation introduced how ESPs workand where they are used

Operational principle

Precipitator types

Applications

and conclusion

Questions???