What is an electrostatic precipitator in a thermal power. On this channel you can get education and knowledge for general issues and topics. Flow simulation in an electrostatic precipitator of a thermal. Ppt detailed report on global electrostatic precipitator. Since many years the use of wesp in the metallurgical industry is. Likewise, having more than one electrical field in parallel allows adjustments to compensate for their differences, so that. The width of the collection plates in a large electrostatic precipitator can be several meters and the height up to 15 m. Total secondary power would not be an adequate indicator for a large multifield esp. Mar 29, 2017 electrostatic precipitator esp is a particulate removal device that removes suspended particulate matter from combustible products using an electrostatic force. When t he decision arises regar ding which type to adopt in a specific situation, one needs to know the advantages and disadvantages of each type of equipment.
Monitoring for an esp with many fields becomes more complicated because emissions are highly dependent on how each field is performing. We can offer suitable technologies for plant applications and operations and. If the waste heat is instead used for district heating, it is called cogeneration. Today we will learn about thermal power plant, its main components along with working and its advantages and disadvantages. Disruptions of the normal corona process greatly reduce the esps collection efficiency, which in severe. As precipitators are operated in sparklimiting mode, power is terminated and the corona generation cycle re initiates. An electrostatic precipitator is equipment, which utilizes an intense electric force to separate suspended particles from the flue gases.
An electrostatic precipitator esp is a filtration device that removes fine particles, like dust and. The spacing between the plates is typically in the range of 2040 cm. An electrostatic precipitator is a type of filter dry scrubber that uses static electricity to remove soot and ash from exhaust fumes before they exit the smokestacks. Jan 27, 2019 electrostatic precipitators have become the norm now in industries. Dec 31, 2017 on this channel you can get education and knowledge for general issues and topics. Electrostatic precipitator, its applications, advantages, at. Construction, working, operation and maintenance of electrostatic. China and india are the major markets during 20162021. Injection for coal fired power plant for high resistivity nh 4 injection for oil fired power plant for low resistivity. Collecting plates are connected at or near thecenterbyrapperbeamswhichservesas an impact point for rapping system. Injection for coal fired power plant for high resistivity nh 4 injection for oil fired power plant for low resistivity naoh spray system for glass melting furnace water quenching sprayer for high temperature gas. Oct 08, 2016 introduction an electrostatic precipitator is a large, industrial emission control unit.
What is electrostatic precipitator definition from. Electrostatic precipitatorelectrostatic precipitator bio mass power plantbio mass power plant. Likewise, having more than one electrical field in parallel allows adjustments to compensate for their differences, so that power input can be optimized. Is there any remedies to identify dc earth fault source at the earliest and take. Introduction an electrostatic precipitator is a large, industrial emission control unit. Find powerpoint presentations and slides using the power of, find free presentations research about electrostatic precipitator ppt. Collection electrode of an electrostatic precipitator in a waste incineration plant an electrostatic precipitator esp is a filtration device that removes fine particles, like dust and smoke, from a flowing gas using the force of an induced electrostatic charge minimally impeding the flow of gases through the unit. Electrostatic precipitation is an extremely efficient way of filtering fine particles from a flowing gas. Electrostatic precipitator esp is a particulate removal device that removes suspended particulate matter from combustible products using an electrostatic force. What is the function of an electrostatic precipitator in a. Ppt thermal power plant powerpoint presentation free.
Working principle of electrostatic precipitator electrical4u. Electrostatic precipitators esp air quality control systems aqcs. Coal used in indian thermal power stations is of inferior grade, at power plant flue gas is often treated with a series of chemical process and scrubbers, having low calorific value35004500kcalkg and high ash content due to drift origin. Ppt electrostatic precipitator esp powerpoint presentation free to download id. Analysis of heat rate improvement potential at coalfired. An electrostatic precipitator esp is an electromechanical device which filters out particles fly ashfumessuspended dirt from airgas stream flue gas if from a.
After it passes through the turbine, the steam is condensed in a condenser and. A project report on general overview of nspclrourkela thermal power plant and study of the electrostatic precipitator by sayantan jana under the guidance of. As a result of losing an electron which is negative, the gas molecules become positively charged, that is, they become positive ions as shown in above figure. Steamcturbine power plant which is sometime known as coal based power plant or thermal power plant, is a major source of electrical energy for any country.
Since many years the use of wesp in the metallurgical industry is a common procedure to remove aerosol dusts. The precipitator functions by applying energy only to the particulate matter being collected, without significantly impeding the flow of gases. Electrostatic precipitator principle, applications. 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. Due to poor quality of coal ash got fused and mineral content stick into water wall which is very difficult to remove often requires removal by pneumatic machines. You may view information about electrostatic precipitator esp. Electrostatic precipitators have become the norm now in industries. Hoppers are fitted below the electrostatic precipitator chamber for collecting dust particles. Equipments used in ash handling system in thermal power plant. This video shows intallation progress of an electrostatic precipitator esp of thermal power plant. Redkoh industries switch mode power supply for electrostatic precipitators the redkoh system can be retrofitted to a precipitator electrical field through the use of existing control cabinets and existing trs. An electrostatic precipitator esp is a panicle control device that uses electrical forces to move the panicles. Electrostatic precipitator, also called electrostatic air cleaner, a device that uses an electric charge to remove certain impuritieseither solid particles or liquid dropletsfrom air or other gases in smokestacks and other flues.
Cottel in 1906 and was first economically used in 1937 for removal of dust and ash particles with the exhaust gases of thermal power plants. Electrostatic precipitator, a device that uses an electric charge to remove certain impuritieseither solid particles or liquid dropletsfrom air or other gases in smokestacks and other flues. Most power stations burn fossil fuels such as coal or oil to generate electricity for use. Esp to to remove the ash particulate matter from dust laden gas and is used in coal power plants. Electrostatic precipitator in modern thermal power plant. The active power cannot be expressed as a rated value because it varies with the esp load for the same rated esp mean current.
They are used in industries like steel plants, thermal energy plants. The main purpose of adopting electrostatic precipitator is to remove the fly ash carried by flue gas. Electrostatic precipitator esp feeddischargesluice gate. This waste heat can go through a condenser and be disposed of with cooling water or in cooling towers. Information on construction and working of electrostatic precipitators esps is given.
Electrostatic precipitator market with huge scope for demand and sales in this region owing to the rise in industrial activities in this region. Detail information on various components is given in the chapter on electrostatic precipitator components. Esps are used in chemical, paper, power sector units, etc but most exclusively it is used in coal based thermal power plants. There is high scope for the electrostatic precipitator market in for use of esp in power plant and industries in various regions across the globe during 20162021. The gas flow distribution in electrostatic precipitator esp ducts of a thermal power plant was numerically simulated with cfd. Electrostatic precipitator pollutioncontrol device. Systems mhps contributes to air pollution control at thermal power plants.
Clinker formation in boiler of thermal power station is due to high ash content which have low fusion temperature below 1470 degree centrigrade and minerals present in it. During my lectureship at r n modi engg college kota raj, i gave a power point presentation on thermal power plant. Cottel in 1906 and was first economically used in 1937 for removal of dust and ash particles with the exhaust gases of thermal power plants 2. Thermal power plant and study of the electrostatic precipitator by sayantan jana under the guidance of j. Electrostatic precipitator an overview sciencedirect. It is the commonly used device for air pollution control. But whether electrostatic precipitators perform the function expected from them can be. The electrostatic precipitator market is a fast growing market with high demand for electrostatic precipitator in thermal power plant and other.
According to the smoke control laws in india apart from banning tobacco smoking in public zone or creating an extra smoking zone in railway stations or airports, it is mandatory to install electrostatic precipitator in every industrial zone of this country. In the present study the gas flow through an esp used at a local thermal power plant is modeled numerically using computational fluid dynamics cfd technique to gain an insight into. Electrostatic precipitator chemistry electrical engineering. Secondary voltage and current are monitored in each field and the total power input to each esp is determined. Electrostatic precipitator efficiency electrical4u. View and download powerpoint presentations on electrostatic precipitator ppt. Note the extremely high efficiencies, nearing 100%. Flow simulation in an electrostatic precipitator of a. The performance of electrostatic precipitator esp is significantly affected by its complex flow distribution arising as a result of its complex inside geometry.
An electrostatic precipitator esp is a filtration device that removes fine particles, like dust and smoke, from a flowing gas using the force of an. Jul 25, 2018 an electrostatic precipitator does not contribute directly to the production of electricity in the thermal power plant, but it helps to keep the atmosphere clean which is quite important for living beings. In power plants, electrostatic precipitators esps are utilized to filter the fly ash from exhaust flue gas before passing it. What is an electrostatic precipitator in a thermal power plant. This electrical equipment was first introduced by dr. Electrostatic precipitators esp collect dust in the flue gas produced by boiler, etc. An electrostatic precipitator does not contribute directly to the production of electricity in the thermal power plant, but it helps to keep the. Limited, rourkela certification this is to certify that the project entitled general overview of nspclroukela themal power plant and the study of the. Electrostatic precipitator free download as powerpoint presentation. If a rigid support of concrete or steel is used, the precipitator is placed on roller bearings or slide bearings. Power sector units, etc but most exclusively it is used in coal based thermal power plants. Ppt electrostatic precipitator esp powerpoint presentation. Electrostatic precipitators esp are used to control fly ash emitting from the boilers of the power plants. Due to the high working temperatures, the precipitator is mounted on a support to ensure minimum forces on the precipitator casing and support during repeated thermal expansions and contractions.
High frequency power supply for electrostatic precipitators. The following work is done in accordance with north chennai thermal power station. Collecting plates are also part of the electrical power circuit of the precipitator. Electrostatic precipitator an overview sciencedirect topics. Solar cooling solar heating thermal insulation underfloor air distribution. Wet electrostatic precipitators for utility applications wet esps for industrial applications. Typical efficiency of an electrostatic precipitator as a function of the corona power ratio, which is power consumed in watts divided by the airflow in cubic feet per minute cfm. Electrostatic precipitator nature physical sciences. Electrostatic precipitators esps can handle large volumes of air without significantly slowing down the rate of flow, because of the low pressure drop across the electrostatic filter. Energy conservation is the very major concern in recent scenarios, mainly in power plants. Mar, 2017 an electrostatic precipitator esp is an electromechanical device which filters out particles fly ashfumessuspended dirt from airgas stream flue gas if from a boiler or furnace before releasing out of a chimney.
A thermal power plant is a power plant in which the prime mover is stream. The thermal efficiency of electricity production is represented by the heat rate, which measures the amount of energy used to generate one kilowatthour of electricity. In power plants, electrostatic precipitators esps are utilized to filter the fly ash from exhaust flue gas before passing it to the atmosphere. Jan 01, 2016 this video shows intallation progress of an electrostatic precipitator esp of thermal power plant. The energy of a thermal power station not utilized in power production must leave the plant in the form of heat to the environment. Sep 09, 2016 electrostatic precipitator, its applications, advantages, at industrial zones in india according to world health organisation 2015 report, around 7 million premature deaths take place due to air pollution. Water is heated, turns into steam and spins a turbine which drives an electrical generator. Retrofit applications of the redkoh system typically permits the reuse of control cabinet components such as circuit breakers, contactors, pts, cts and control wiring. Construction of electrostatic precipitator above figure shows construction of a typical dry electrostatic precipitator. The active power is normally measured with a wattmeter or calculated by means of computer simulation. Analysis of heat rate improvement potential at coalfired power plants. Construction, working, operation and maintenance of. This is an introduction to mitsubishi hitachi power systems environmental solutions, ltd. Esp in thermal power plant is a filtration is used to remove dusts from flue gas using the.
On the basis of the middle experiment model, gambit and icem cfd. Information on construction and working of electrostatic precipitators esps is given in this chapter. Sep 30, 2018 ash handling plant or ash handling system in thermal power plant are used to cooled down the ash to manageable temperature, transferred to a disposal area or storage which is further utilized in other industries. Electrostatic precipitator is commonly used in modern fossilfired power plant. The principle is that the fly ash gets electrified when the flue gas flows through the electrostatic precipitator and then precipitate on the dust collector. Pm controlpm control xcyclones xbaghouses xesps xscrubbers xparticulate filters cyclones. Cyclones versus electrostatic precipitators cyclones and electrostatic precip itators are two different types of equipment, each capable of removing particles from an air stream. Energy conservation in power plant electrostatic precipitator.
Redkoh industries switch mode power supply for electrostatic. Nimesh gajjar jump to stage 2 jump to stage 3 jump to. An electrostatic precipitator system may include several sections energized from separate highvoltage supplies. But whether electrostatic precipitators perform the function expected from them can be determined by measuring the efficiency of the device. Electrostatic precipitator of thermal power plant youtube.
Monitoring approach the key elements of the monitoring approach, including the indicators to be monitored, indicator ranges, and performance criteria are presented in table a. Electrostatic precipitator, its applications, advantages. And our engineered upgrades, quality components and replacement parts, and aftermarket services help keep existing esps running efficiently and effectively, regardless of oem. An electrostatic precipitator is a device that removes suspended dust particles from an exhaust or gas by using a highvoltage electrostatic charge to electrically charge the dust particles. In india 65% of total power is generated by the thermal power stations.
Wesp wet electrostatic precipitator kvt develops sustainable and ef. An electrostatic precipitator esp is an electromechanical device which filters out particles fly ashfumessuspended dirt from airgas stream flue gas if from a boiler or furnace before releasing out of a chimney. Sep 17, 2017 today we will learn about thermal power plant, its main components along with working and its advantages and disadvantages. An electrostatic precipitator does not contribute directly to the production of electricity in the thermal power plant, but it helps to keep the atmosphere clean which is quite important for living beings. The precipitator functions by applying energy only to the particulate matter being collected, without. Higher voltages can be required in order for corona generation to begin. Due to strict regulation and everincreasing air pollution, installing one in a thermal power plant or any other power plants where flue gases are released, have become a necessity. Abstract electrostatic precipitators esp or electrofilters remove flying ashes and fine particles from the flue gas in thermal power plants, before passing the gas into the chimney. Particles are collected on charged plates, which attract the charged dust particles. Thermal power plant steam vapour power plant coal based power plant rankine cycle power plant prepared by. Maximum allowable value of dust is 50 mgm 3 and it requires that the efficiency of the esps better than 99%, which calls for an. It is designed to trap and remove dust particles from the exhaust gas stream flue gases of an industrial plant.
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