Electro Static Precipitator ESP In Thermal Power Plant, working principle, Original Images, Panel Drawings.

Electro Static Precipitator ESP In Thermal Power Plant, working principle, Original Images, Panel Drawings.

Electro Static Precipitator Working Principle:

Electrostatic precipitator is additionally brought in the short type of ESP. It is utilized to channel dust molecules in the pipe gas in nuclear energy station. According to government low the to keep away from air contamination these sort of precipitators are generally utilized. 

Additionally, some other force plants are utilizing pack channel dust-gathering framework. Pack channels are utilized to channel tiny size molecule commonly in micron size. Notwithstanding, contrast with sack channel ESP is extremely affordable. Let see Entire learn about electrostatic precipitator.

Working Principle of Electro static precipitator:

It is working under principle of ionization. Electrostatic precipitation is a method of dust collection that uses electrostatic forces, and consists of discharge wires and collecting plates. High voltage DC is applied across the two electrodes consisting of positive electrodes and negative electrodes.

The negative electrodes are in the form of rod or wire mesh. Positive electrodes are in the form of plates. The positive plates and negative electrodes are placed vertically in the electrostatic precipitator alternatively one after another. Positive electrode will be connected in the body of the precipitator.

The positive cathodes are called as gathering anodes. Because of high voltage between the two cathodes, the gas between the two anodes get ionized and which deliveries free electron. At the point when the residue molecule in the gas enters in to the electrostatic precipitator, which pulled in by the free electrons. 

The free electron which holds the residue molecule in the gas. Henceforth these residue particles will be drawn in by the positive plates. Subsequent to arriving at positive plates the free electron become naturalized lastly the residue become tumble down because of the gravitational powers. Consequently the residue molecule will be eliminated from the gas. 

These residue will be eliminated from the precipitator by the assistance of containers. Water supplicate might be utilized on the top to speed up the expulsion of the residue from the gathering plates. 

Note: All these cycle is working in a shut holder.

ESP Electrical Circuit Diagram:

See the outline of electrical chart of ESP. The normal terms of ESP electrical circuit outline are Input Converter, separating circuit, inverter, HV transformer, series capacitor, series inductor, rectifier and cathodes. 

Information Converter: The Input converter is utilized to change over Input AC voltage to DC yield voltage. It is comprising of six number SCR. This is utilized to restrict the information current of transformer. The whole control will change from this segment as it were. 

i.e to control yield voltage of the transformer we will take the current reference from the HVDC units. As indicated by that the converter changes over the DC yield. 

Sifting circuit: Inductor and capacitor are utilized to shape the DC voltage. 

Inverter segment: It is utilized to change DC voltage over to AC voltage. In light of the transformer just works in AC.

Series capacitor Cr:

The capacitor is used to avoid DC component in the transformer input voltage. Here capacitor is a main part in electro static precipitator. Failure of these capacitor leads to large circulation current flow in the transformer windings. 85% of the electrostatic precipitator fails due to these capacitor failures.

Series inductor Lr: The inductor Lr is used to limit the magnetizing current flow in the transformer.

HV Transformer: 

High voltage move forward transformer is utilized to expand the transformer voltage from multiple times of the info voltage. The yield voltage of the transformer is straightforwardly corresponding to the distance between the plates. 

At the point when the distance between the plates increment then we should expand the yield voltage of the transformer. The voltage rating will be around 400/120 kV.

Rectifier: It comprises of a full wave rectifier. The high voltage diodes are utilized. 

Cathodes: The two finish of the rectifier is associated with the precipitator terminal. For the most part certain terminal is associated with the body of the precipitator.

Mechanical Aspects in ESP:

The filtering rate is directly proportional to the size of the dust particle, dust concentration and filtering time. Hence large size particle will be filtered easily, but small size particle cannot be removed by the ESP.

To filter small particle size and high concentrated gases, the electrostatic precipitator must be larger (to increase the treating time it takes for the process gas to pass through).

So that To remove small size particle, generally Bag filters are preferred.