Know in Details About Electrostatic Precipitator

Industrial equipment releasing harmful emissions into the air are largely dependent on the use of electronic precipitators to control the emission rates since the specific heavy metals are highly stringent. Also known as electrostatic cleansers for eliminating impurities, either air or gas, solid, liquid, smokestack and other fuel, this precipitator functions effectively by applying energy to the collected particulate matter without impeding the gas flow out of the equipment. Hence, they are beneficial devices for air pollution control. You can consult a professional company for ESP internal supply. 

Initially, the product’s design was for recovering valuable industrial process materials, while now it is efficient in removing harmful industrial particulate matter from waste gas and power generating stations. If the harmful matter is allowed to release into the atmosphere, it will reduce visibility in the air, contribute to climate change, consequently causing severe health issues in individuals like lung damage, heart diseases, bronchitis etc. These electrostatic precipitators can capture fine particles that are smaller than 2.5 microns and are highly dangerous when released into the atmosphere.   

Design and Procedure

The electronic precipitators function by charging the particles in the gas stream electrostatically. The particles which are charged gets attracted to the plate and other kinds of collection devices. The treated air now passes through the precipitator, through a stack to the atmosphere. After enough particles accumulate on the collection device, the collectors shake it off via mechanical rappers. Be it dry or wet, these particulates now fall into the hopper at the bottom of the unit. The conveyor system transports it away for safe disposal. The ESPs also have denitrification units that remove nitrogen oxide and scrubbers removing Sulphur dioxide.  

Advantages of ESP

• It has high durability and strength 
• It effectively collects both dry and wet impurities  
• The operating cost is extremely low  
• The collecting capability of the device is high for smaller particles  
• It is designed to handle a large volume of gas along with heavy dust loads at low temperature 

Different Types of ESP 

Plate Precipitator

This is the most basic type of precipitator consisting of stacks of vertically arranged flattened metal plates placed at distances of 1 cm and 18 cm and rows of thin vertical wires. The air stream passes horizontally through the vertical plates and after that through the stack of positioned plates. A negative voltage passes through the wire and plate to ionise the particles together. Now they are diverted toward the grounded plates making use of electrostatic force. The particles get collected on the collection plate and finally removed from the air stream. 

Dry Electrostatic Precipitator

The precipitator collects pollutants like ash or cement in their dry state. The ionized particles flow through electrodes and a hopper, after which the particles are extracted. Now the collection of the dust particles from the air stream happens after hammering the electrodes.  

Wet Electrostatic Precipitator

The precipitator removes resin, tar, paint, oil, which are wet in nature. The collectors are continuously sprayed with water which enables the collection of ionized particles from the sludge. This is how they are most efficient and effective than the dry ESPs. 

Tubular Precipitator

This is a single-stage unit that consists of tubes that have high voltage electrodes. The arrangement is in a manner that it is parallel to each other in a way that they run on their own axis. The tubes’ arrangement is either circular, hexagonal honeycomb or square with gas flowing upwards or downwards. The gas passes through every tube to remove fine particles. 

Know about the importance of ESP in reducing air pollution : https://www.linkedin.com/pulse/how-reduce-pollution-thermal-power-plant-nikunj-agarwal/

What Should You Know Before Approaching A Manufacturer Of ESP Insulators?

The demand for ESP insulators is increasing with every passing year. This is because of the benefits the insulators offer. Such insulators are a common and vital part of different industries. Many manufacturers deal with manufacturing such insulators. You must know the fundamentals before approaching a manufacturer. Let’s have a quick look at them.

What Are Different Types Of ESP Insulators?

Many types of ESP (Electrostatic Precipitator) are available in the market. Choose one as per your requirements. Here is the list of insulators:

• Pin insulator
• Shaft insulator
• Cylindrical support insulator
• Well-through bushing insulator
• Conical support insulator

How Does The ESP Insulator Work?

The ESP insulator uses electrostatic forces to attract dust particles from the exhaust gas formed during different industrial procedures. Many direct-current negatively-charged high-voltage discharge electrodes are positioned between positively charged electrodes. When a contaminated gas passes through the passage, the gas particles become negatively charged. Now the collecting electrodes are kept in a suspended position. The ESP housing is insulated with cylindrical support or conical insulators.  

The dust collected on collecting electrodes is removed by rapper insulators. These are the hammer rapped inside the hopper placed beneath the electrodes. As the mechanical force is transferred, the hammer rapping motor provides insulators via rapper insulators. Dust is also removed by spraying water.

Where Is An ESP Insulator Being Used?

The device is hugely used in various power industries such as coal power plants and oil-fired plants. Insulators are also used in the industry where gas particles have to be exhausted. The industries may include cement plants, paper mills, pulp industry, steel and iron factories, petrochemical industries, glass factories, refuse incinerators, aluminium refineries, and the gas industry. The demand for ESP and ESP insulators has been increased radically once the industries have started using them to eliminate dust from the flue gas. If you want to use them, make sure you keep the temperature of the electrical porcelain below 150 degrees Celsius. Also, keep the insulators clean so they operate well.

What Are The Key Benefits And Technical Features Of These Insulators?

• They are highly resistant at elevated temperatures. It reduces the chance of electrical breakdown owing to excess leakage current.
• The surface glaze of the equipment provides it with dust and dirt repelling property. This feature reduces the chance of tracking across materials. It also helps in inspection and cleaning.
• The insulators have high mechanical strength as well as impact resistance. And these properties reduce the failure rate owing to mechanical faults or stress.
• The low thermal expansion property allows them to prevent cracking due to thermal shock.

How Should You Approach A Manufacturer?

First of all, you need to choose a reputable and reliable manufacturer because the insulators, as well as ESP spares, are used for important industrial procedures. Unless the manufacturer offers superior-quality products, the purpose won’t be served. The equipment should last for many years to come. The vendor should have sufficient stock of common designs. They should also have a regular stock of essential spare parts so they can supply the same to their customers as per their need.

As it comes to approaching an ESP part and insulator manufacturer, you must know the fundamentals discussed above.

What Is An ESP And How Does It Help To Control Air Pollution Effectively?

Reducing the number of pollutants in the air is crucial for the well-being of human beings and the environment. Poor quality air can harm human health significantly, especially the cardiovascular and pulmonary systems. Air-borne pollutants can also damage plants while the smoke can reduce visibility. And low visibility often results in fatal road accidents.

Ways To Control Air Pollution

Community-level

You can reduce the amount of pollution by avoiding the use of a private car. Better you opt for walking, cycling or using public transport.  Also, keep your car in a good condition to minimize harmful emissions. Use recyclable products. Good urban planning helps improving air quality by offering greener and cleaner choices to the common folks.

Agriculture

Farmers can contribute to this mission by minimizing hazard-reducing burning.

Industry

But the above methods are not suitable for industries. They need to use pollution control devices like ESP or electrostatic precipitator for particle removal. They also use cyclones, bag filters, and packed bed wet scrubbers for the same. However, the impact of ESP is the greatest.

The Use Of ESP In Controlling Air Pollution

Electrostatic precipitator (ESP) aka electrostatic air cleaner is a tool used for controlling air pollution at the industrial level. It uses an electric charge for the removal of particular impurities. The impurities may be liquid droplets or solid particles from the air as well as other gases in smokestacks. ESP applies electrical energy to the particulate matter being accumulated. But it hardly impedes the gas flow. The device was designed to recover different industrial-process materials. But it works quite effectively to control air pollution. ESP is the best at the removal of particles from waste gases in power-generation stations and industries.

Working Procedure

Electrostatic precipitators work by eliminating smoke and particles from the gas stream with an electrostatic charge. In the plants, particulate matters created during the manufacturing process are released as dust particles in the exhaust gases. If those matters are being directly released into the atmosphere without processing, they can reduce visibility. Also, they may cause climate change while contributing to severe health issues in humans. ESP plays a significant role to clean up the flue gases.  The device is effective in reducing particle pollution for particles that are 1 micron in diameter. Some improvised devices can even remove particles of 0.01 micron in diameter as well. They are ideal to manage a huge amount of gas at different temperatures and flow rates. They either remove liquid droplets or solid particles.

Large power plants have several precipitators installed in every unit. But for residences, one unit is enough. The residential ESPs are a little larger than a vacuum cleaner. Some powerful precipitators can collect almost 99.9% or even more of the dust containing harmful chemicals.

Usage Of Electrostatic Precipitators

• Eliminates dirt from the flue gases in industrial facilities
• Removes oil mists
• Removes acid mists in the chemical processing facilities
• Cleans gases from blast furnaces
• Removes fungi and bacteria in medical and pharmaceutical production units
• Purifies air in AC and ventilation systems
• Recovers materials from the gas flow
• Separates rutile from zirconium in rutile recovery units and dry mills

Use of Electrostatic Precipitators in Chemicals and Fertilizer Units

The electrostatic precipitator is also known as an electrostatic air cleaner.

• It is often used in industrial and chemical plants.
• It removes liquid droplets or solid particles from gases or air that moves through flues or smokestacks.

They are usually charged by applying electricity. The functions are based on the application of energy.  They are passed unto the particulate collected in the smokestacks without disturbing the flow of gas. 

It is a highly effective system used in various industries. They include the chemical and fertilizer sector as well. It was initially designed to recover the valuable industrial-process materials. It also plays a vital role in air pollution control. Power generating stations and industrial facilities have immense use of this system. It is used in removing particles from waste gases.

Design And Process Used In Fertilizer And Chemical Plants

The basic designs include thin vertical wires set in rows with a stack of steep and flat metal plates. The plates are placed depending on the application. Usually, in an industrial system, the placement ranges from 1.3 cm to 17.8 cm. The gas flows horizontally instead of vertically through the plate stacks and between the wires. After that, the negative electrical charge of a thousand volts is applied between the plates and wires. Thus, the process of removing impurities from the stream of gas ends.

The electrostatic precipitators are an essential system in removing wastes of flue gases. The plate precipitators are usually marketed as air purifiers. They are so powerful that they can even replace furnace filters. Cleaning the plates is quite challenging and often requires professional help. 

Looking for more guidelines and support, please feel free to contact Helios Infrapro for an enriching experience.

How to Control Air Pollution in Cement Industry

Air pollution becomes a big headache for the environmentalists all over the world. In a developing country like India, the matter is still not under control. With the advancement in various industries, the need for air pollution control becomes much critical than ever. The cement industry is one such industry where the procedure of air pollution control is strictly maintained.

There are a lot of ways to control air pollution in the cement industry. If you are the owner or the production manager in a cement company, then you must be aware of the ways of controlling air pollution level at your site.

Know about the Devices

With the advent of modern technologies, there are new devices in the market that can help you in controlling air pollution in cement factories. Before you decide one of these devices, you should have a basic knowledge about the devices available in the market.

ESP or Electrostatic Precipitator

ESP control device is used to ionize the polluted air passing between the electrodes. You can see the use of this device in cement mills and roller mills to reduce the emission of products like cement kiln dust which is highly responsible for making the air contaminated.

Baghouse Filters

Bags are used to filter the polluted air in the cement factories and other mills. Contaminated air is filtered through these bags, which are closed at the bottom. The top of the bag is open to an air chamber which remains clean and pollution-free. You can see the use of these baghouse filters in cement production mills. Objects collected in the bags are simply released back to the production process of cement to avoid air pollution.

In-Situ Monitoring Device

This monitoring device is used to monitor the emission of SO2, NOx, and hydrocarbon during the procedure of cement making in factories. The record then will be sent to the control room where the controller will check it and then adjust the temperature or the flow of the objects used in the manufacturing process to reduce the emission and keep it under control. The monitor is installed near the cement kiln stack.

Selective Non-catalytic Reduction

This device helps you to check the current emission of SO2, NOx and HCs. The emission can be controlled once the reading is correct. You can prevent the formation of NOx in the cement kiln when you utilize this system regularly in your cement mill.

Nothing is more important than the health of your staffs and workers. Thus, being the owner or a manager of a cement mill, you should know the right use of all these devices to reduce the air pollution level. There are top companies in India that manufacture such filters to control air pollution in cement factories.

Helios Infrapro is one such company. You can get the most advanced bag filters and other devices from https://www.heliosinfrapro.com/products.php at competitive prices. Please contact us 033 24005552 for details.