What is the principle of electrostatic precipitator?
Electrostatic precipitators operate on the principle of the attraction of a charged particle for an oppositely charged collector. They have been used for both collecting particles for further analysis and for controlling particulate emissions from sources.
What is electrostatic precipitator PDF?
An electrostatic precipitator (ESP) is a particle control device that uses electrical forces to move the particles out of the flowing gas stream and onto collector plates. The particles are given an electrical charge by forcing them to pass through a corona, a region in which gaseous ions flow.
What is the working principle of ESP?
Working Principle of ESP An ESP works on the principle of the corona discharge effect. A high DC voltage is applied across the two plates or electrodes. The negatively charged plate attracts the dust particles which are further attracted by the positively charged electrode by the process of Ionisation.
Who introduced electrostatic precipitator?
Frederick Gardner Cottrell
In 1824 M. Hohlfeld, a mathematics teacher in Leipzig, first described the precipitation of smoke particles by electricity. The first commercially successful process was patented in 1908 following experiments by American chemist Frederick Gardner Cottrell at the University of California, Berkeley.
Why is ESP used?
An electrostatic precipitator (ESP) is a filterless device that removes fine particles, like dust and smoke, from a flowing gas using the force of an induced electrostatic charge minimally impeding the flow of gases through the unit.
What are the advantages of electrostatic precipitators?
Advantages of electrostatic precipitator: It can be used for the collection of both dry and wet impurities. It has low operating costs. The collection efficiency of the device is high even for small particles. It can handle large gas volumes and heavy dust loads at low pressures.
What is discharge electrode?
Discharge electrodes (DE) emit charging current and provide voltage that generates an electrical field between the discharge electrodes and the collecting plates. The electrical field forces dust particles in the gas stream to migrate toward the collecting plates.
What is an electrostatic precipitator ESP?
An electrostatic precipitator ESP is a large, industrial emission-control unit. It is designed to trap and remove dust particles from the exhaust gas stream of an industrial process by using the force of an electric field. We need Electrostatic Precipitator in order to reduce pollutants emitted into the atmosphere.
How does a precipitator work?
The precipitator consists of vertical parallel plates (collecting plates/electrodes) forming gas passages 12 to 16 in. (30.5 to 40.6 cm) apart. Discharge electrodes are electrically isolated from the plates and suspended in rows between the gas passages. Every particle either has or can be given a charge – positive or negative.
What does ESP Stand for in electrostatic capacitor?
Electrostatic Precipitator (ESP) Filter Unit 1.4 Safety Features An Interlock in the Unit’s Door Assembly interrupts the mains power if the main filter compartment is opened before the mains power has been isolated.