Question: What is the use of electrostatic precipitator in steam power plant?

Electrostatic precipitators (ESP) collect dust in the flue gas produced by boiler, etc. Mitsubishi Power contributes to air pollution control at thermal power plants, steel plants , and various industrial plants.

What is electrostatic precipitator used for?

Electrostatic precipitator, also called electrostatic air cleaner, a device that uses an electric charge to remove certain impurities—either solid particles or liquid droplets—from air or other gases in smokestacks and other flues.

Where is electrostatic precipitator in thermal power plant?

If an ESP is installed as part of the flue gas cleaning system, it is located between the induced draught fan and the combustion chamber.

What is the working principle of electrostatic precipitator used in power plants for emission control?

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 does an electrostatic precipitator remove?

Description. An electrostatic precipitator (ESP) removes particles from a gas stream by using electrical energy to charge particles either positively or negatively. The charged particles are then attracted to collector plates carrying the opposite charge.

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What are the advantages of using an electrostatic precipitator?

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 Corona ESP?

Electrostatic precipitator (ESP) is an electrohydrodynamic-based air filter that charges particles based on corona discharge and collects particles by induced electrostatic forces. … The characteristics are presented with respect to the pitch and diameter of the cylindrical corona electrodes.

How much does an electrostatic precipitator cost?

Cost Effectiveness: $73 to $720 per metric ton ($65 to $660 per ton) Theory of Operation: An ESP is a particulate control device that uses electrical forces to move particles entrained within an exhaust stream onto collection surfaces.

What are the advantages and disadvantages of electrostatic precipitator?

Electrostatic Precipitators Information

Advantages Disadvantages
Very high collection efficiencies, even for very small particles. Cannot control gaseous emissions
Can handle corrosive materials, wet materials, and high temperatures. Very dependent on the electrical resistivity of the particulate.

What is 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.

How do you calculate electrostatic precipitator?

Electrostatic Precipitator (ESP) Efficiency Calculator



η = 1 – e(-WA/Q). The terminal drift velocity W in m/s, total surface area of collecting plates A in m2 & volumetric air flow rate in m3/s are the key elements of this calculation.

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