Why is a positive plate of ESP grounded?

Why is a positive plate of ESP grounded?

The negative electrodes are connected to a negative terminal of a high voltage DC source, and positive plates are connected to the positive terminal of the DC source. The positive terminal of the DC source may be grounded to get stronger negativity in the negative electrodes.

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.

What is the function of ESP in 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.

Which statement is incorrect about ESP electrostatic precipitator?

“Which of the following statements is incorrect about electrostatic precipitators?” ESP can remove over 99% particulate matter present in exhaust from a thermal power plant . Collecting plants are grounded, so it is used to attract the charged dust particle. Velocity of at between the plates must be low.

Are smoke particles charged?

Smoke particles pick up a negative charge. Smoke particles are attracted to the collecting plates.

What are the advantages and disadvantages of ESP?

Electrostatic Precipitators Information

What is ESP polluted?

What is an Electrostatic Precipitator? An electrostatic precipitator (ESP) is defined as a filtration device that is used to remove fine particles like smoke and fine dust from the flowing gas. It is the commonly used device for air pollution control.

Which statement is incorrect about ESP?

What is correct about an electrostatic precipitator?

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.

How do particles in smoke become charged?

Electrostatic smoke precipitators work by forcing dirty flue gas (the gas escaping from a smokestack) past two electrodes (electrical terminals), which take the form of metal wires, bars, or plates inside a pipe or smokestack. As the dirt particles move past it, they pick up a negative charge.

Why does the smoke precipitate?

Smoke coming out of the chimneys contain colloidal carbon particles dispersed in air. Since carbon particles carry an electric charge, they remain suspended in air. The charge on the colloidal carbon particles is removed by the use of electrical precipitator. Thus, carbon particles from smoke get precipitated.

What is an ESP and how does it work?

ESPs are capable of collection efficiencies greater than 99 percent. An ESP is primarily made up of the following four components: gas distribution plates, discharge electrodes, collection surfaces (either plates or pipes) and rappers.

How do wet ESPs work?

In wet ESPs, the collector plates are cleaned by rinsing with water. Wet ESPs are typically employed when gas streams contain sticky particles with low resistivity. ESP performance can be affected by particle resistivity. Particle resistivity is the property that influences the deposition and removal of particles from the collection plates.

What is an ESP precipitator?

An ESP uses a high voltage electrostatic field to separate dust, fume or mist from a gas stream. The precipitator consists of vertical parallel plates (collecting plates/electrodes) forming gas passages 12 to 16 in. (30.5 to 40.6 cm) apart.

How does particle resistivity affect the performance of the espeesp?

ESP performance can be affected by particle resistivity. Particle resistivity is the property that influences the deposition and removal of particles from the collection plates.