Electrostatic Precipitator Spares

Know More About Electrostatic Precipitators And Its Control Techniques

The easiest way to remove particles from a gas stream is by using an electrostatic precipitator. Electrical energy is used to charge those particles negatively or positively before they get attracted by the collector plates which are generally of the opposite charge. The collected particles become dry in the collector plates and can be easily removed or washed with water. Not everyone using the procedure is aware of the fact that the collection efficiency of ESPs is more than 99 percent and this is why they are widely used in various industries.

Its Various Components

The four common components you will generally find in an electrical precipitator are discharge electrodes, rappers, collection surfaces and gas distribution plates. These plates comprise of numerous plates which are perforated to maintain and properly distribute the air entering the gas stream.

The discharge electrodes in a majority of the ESPs are divided into 3 or 4 fields. The larger electrodes are divided into around 14 fields which are generally found in series. A solo transformer-rectified set power supply is sufficient to energise those electrodes and create ions. The ions dashes with the particles in the incoming gas stream and applies an electrical charge. The charged particulate matter then collects on the plates or pipes which can be later removed using the rapping system.

Types Of Electrostatic Precipitators

There are generally two types of ESPs, namely dry ESPs and wet ESPs. What differentiates these two is the method through which the plates where the particles collect are cleaned. Vibrations or mechanical impulses are used to loosen the collected particulate matter and clean the dry ESPs from the collection plate. To remove wet ESPs, you have to rinse the collector plate thoroughly using water. Using this wet method becomes necessary when the particles accumulated in the gas streams are sticky and have low resistivity.

ESP Performance And Particle Resistance

For someone not aware of the term, ‘particle resistivity’ is basically the property of the particles that can influence the process through which they deposit or is removed from the collection plates. This is why resistivity of the particles can affect the performance of Electrostatic Precipitators drastically. Moderate resistivity is regarded to be the ideal situation when the particles can automatically accomplish some of their charges after reaching the collection plate. This prevents the inhibition of other deposited particles and makes them capable of retaining their charge while holding them lightly on the plate.

It takes longer for the particles to conduct away their charge if the resistivity of the particles is higher. As a result, a negative charge builds up on the plate which inhibits the other deposits. If the resistivity is too low, the particles will start losing their own charge once they reach the collection plate and start attracting charges from the plate. This will make the negatively charged particles deter back into the gas stream.

Since your knowledge about electrostatic precipitators has enhanced, it’s time you start looking for a reliable company who can take care of all your ESPs needs.


Electrostatic Precipitator – To a Smokeless Mother Nature, with Love

The earliest date attempt of filtering suspended particles from gases and aerosols was first made by a scientist named Dr. Frederick Cottrell in the years 1906. The invention of the device, thus, is a result of this man’s attempt and the world owes to him big time. Evidence for his work is the US Patent 895, 729, which was filed in 1097 stating the work.

The patent described how suspended particles could be removed from every kind of industrial fume, smoke, and dust using high voltage electrodes. An interesting part of Cottrell’s patent reveals how the technique can be used for the destruction of fog and mist on land and also in water.


How does this device work?

Dirty flue gas is allowed to pass through two electrodes in the electrostatic precipitator. These electrodes are wrapped in metal wires and placed inside a pipe. The receiving electrode is negatively charged and the emitting electrode is positively charged.

The particles in the flue gas that passes through the device are attracted by the negative charges and attain the negativity. These particles are then attracted by the positively charged electrode due to their difference in charges. What comes out is only clean, fresh air.

The particles are removed using collecting plates at regular intervals via shaking, brushing, or automated cleaning processes like rapping. Some devices have additional fabric filters, which help in the removal of large-size soot particles.

Why is static electricity effective on smoke?

No matter how strongly you support the notion that smoke is gas, the fact cannot be denied that it is an aerosol. Yes, most aerosols contain liquid droplets. You’ve seen them in perfumes and air fresheners.

But, smoke as an aerosol contains soot particles instead. Whatever be it, smoke is liable to the influence of static electricity. These particles can be charged and removed from the flue gas. The high voltage which is applied can ionise the particles and separate them from the source.



What are the types of electrostatic precipitators available in the market?

The designs vary in the sense that they can separate particles of different size and chemical make-up from different volumes and types of flue gas. For instance, if a power plant burns excessive coal, the device has to be designed keeping in mind the chemical composition of the same.

Yet again, there are power plants that need to lower the emission of sulphur dioxide and ash which are generated during production processes. Devices for this purpose should be upscale in size.

Further, it also depends on the law of the area in which the device is being used. If the rules for air pollution control are very stringent, power plants running in the area might require multiple devices working simultaneously to clean air.
Lastly, the accessories are important, too. For instance, if your factory processes demand a huge amount of dust and smoke to be cleaned at frequent intervals, the device must be designed in such a way that it supports automated rapping systems.

What are the typical applications of the device?

• Gas production plants.
• Cement and limestone production plants.
• Iron and steel production plants.
• Chemical and metallurgical production plants.
• Coal boilers.
• Biomass fired boilers.
• Sludge incinerators.

The end story is, if there’s a device that can keep industrial air pollution under control, it definitely has to be an electrostatic precipitator. It’s efficacious, economical, and very much advantageous. It’s an invention devised exclusively for Mother Nature with love.

The Way Electronic Air Purifier Works

Let us look at how the electronic air channel, which is one of the four sorts of air channels, attempts to guarantee that air contaminants in a room are minimized.

Electrostatic-Precipitator-SparesThese sorts of room air cleaners vary as to the instruments by which they dispose of contaminants from the air. The three different sorts of air channels are the gas stage, mechanical, and half breed air channels. In mechanical air channels, the air is compelled to pass through an uncommon sort of screen and this will trap different sorts of aggravation particles and allergens before the air gets into the lungs of individuals. In the gas stage air channel, the undesirable contaminants and smells are caught utilizing a permeable, which is normally actuated carbon. The electronic air channel meets expectations by making electrostatic charges in the channel to draw in and trap allergens and different aggravations.

Electronic channels are regularly introduced with aerating and cooling frameworks to improve indoor air filtration in the different parts of the home. The contaminants and aggravations buzzing around are compelled to experience a pre-filter that capacities as a trap for a large portion of these undesirable particles. Those particles that have the capacity traverse the pre-filter are given an electric impulse. This type of residence air channels is given gatherer plates that draw in the electrically charged particles where they stay until the air cleaner is cleaned or Electrostatic Precipitator Spares are replaced.

The electronic air channel can be of two sorts: the charged media channel and the electrostatic precipitator. In the charged media channel, the dust and contaminants are caught in charged filaments. In the electrostatic precipitator, an arrangement of charged plates serves as the authorities. The electrostatic precipitator has better accumulation proficiency in light of the fact that it delivers around 20,000 volts to instigate a static electric charge in the dust particles and other undesirable poisons. This type is more appropriate and helpful and is commonly used all over to have pure air.

Electrostatic Precipitator Spares – Effective Way to Purify Environment

Electrostatic Precipitator Spares is used to reduce the pollution from the chimneys or channels. It is usually used in thermal power plants to control the pollution level.

electrostatic precipitatorElectrostatic Precipitator was first discovered by Dr F.G. Cottel in 1906 and was first used in1937 to remove dust particles. They are widely used for removing flue ash from electric utility boiler emissions. It is gaining huge popularity in recent times because of the rules of stringent air quality codes. It is designed in such a way that it can be used as a primary or supplementary unit to a cyclone collector. It is considered valuable to keep cyclone as a primary collector for cases where compilation in effectiveness must be improved specifically when there is a large amount of unburnt carbon as enormous quantities can unfavorably influence the assortment effectiveness of a precipitator.

There are numerable benefits of electrostatic precipitator spares. Some of them are mentioned below-

  • It is very effectual in removing tiny particles such as fly ash, smoke and mist. It has the capability of removing dust adequately large ranging from 0.01 micron to 1.00 micron. The diminutive dust particles which are below 10 microns cannot be detached even with the assistance of wet scrubbers and mechanical separators cannot be employed if adequate water is not available.
  • It is also very efficient for high dust loaded gas
  • It endows with ease of operation or function
  • The dust is accumulated in dry form and can be effectively removed wet or dry

There are numerous companies that provide spares for electrostatic precipitator ensuring they use best quality, licensed solution guaranteeing reliability and credibility. Their qualified engineer diagnoses the areas where replacement of electrostatic precipitator parts is needed, whether retrofitting and renovation services is required or not.

Electrostatic precipitator spares is cost effective in the long term. It is quite costly in the first purchase. However, in the long run, you will be benefitted as you don’t have to purchase replacement filters. Replacement filters can be quite problematic to replace. It is very crucial to note that ion charged plates has to be cleaned on a regular basis for highest and maximum performance. Hepa filters thrust air by fine filter. The design needs a profound responsibility for fan to push the air. ESP have almost no wind resistance and don’t need the pushing control of other models.