Electrostatic precipitators

Definition

Electrostatic precipitators (ESPs) are devices used to remove fine particles, like dust and smoke, from a flowing gas using the force of an induced electrostatic charge. They are commonly used in industrial processes to clean exhaust air before releasing it into the atmosphere.

5 Must Know Facts For Your Next Test

1. Electrostatic precipitators use electric fields to charge particles in a gas stream.
2. The charged particles are attracted to and collected on plates or other structures with an opposite charge.
3. ESPs are highly efficient at removing very small particles, including those less than 1 micrometer in diameter.
4. They play a crucial role in reducing air pollution from industrial sources such as power plants and cement factories.
5. Maintenance of ESPs involves periodic cleaning of the collection plates to ensure continued efficiency.

Review Questions

• How do electrostatic precipitators use electric fields to remove particles from a gas stream?
• What types of industries commonly use electrostatic precipitators?
• Why is regular maintenance important for the effectiveness of electrostatic precipitators?

Related terms

Electric Charge: A property of matter that causes it to experience a force when placed in an electromagnetic field.

Electric Field: A field around charged particles that exerts a force on other charged particles; described by Coulomb’s law.

Pollution Control: Techniques and technologies employed to reduce or eliminate the emission of pollutants into the environment.