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. Energy conservation in power plant electrostatic precipitator. Monitoring for an esp with many fields becomes more complicated because emissions are highly dependent on how each field is performing. What is the function of an electrostatic precipitator in a. On this channel you can get education and knowledge for general issues and topics.
After it passes through the turbine, the steam is condensed in a condenser and. Electrostatic precipitatorelectrostatic precipitator bio mass power plantbio mass power plant. 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. Working principle of electrostatic precipitator electrical4u. It is the commonly used device for air pollution control. We can offer suitable technologies for plant applications and operations and. Injection for coal fired power plant for high resistivity nh 4 injection for oil fired power plant for low resistivity. The width of the collection plates in a large electrostatic precipitator can be several meters and the height up to 15 m. Today we will learn about thermal power plant, its main components along with working and its advantages and disadvantages. Information on construction and working of electrostatic precipitators esps is given in this chapter. Likewise, having more than one electrical field in parallel allows adjustments to compensate for their differences, so that power input can be optimized. Cyclones versus electrostatic precipitators cyclones and electrostatic precip itators are two different types of equipment, each capable of removing particles from an air stream. Higher voltages can be required in order for corona generation to begin. 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.
Since many years the use of wesp in the metallurgical industry is a common procedure to remove aerosol dusts. Electrostatic precipitator of thermal power plant youtube. And our engineered upgrades, quality components and replacement parts, and aftermarket services help keep existing esps running efficiently and effectively, regardless of oem. What is an electrostatic precipitator in a thermal power. Detail information on various components is given in the chapter on electrostatic precipitator components. 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. Collecting plates are also part of the electrical power circuit of the precipitator. An electrostatic precipitator is equipment, which utilizes an intense electric force to separate suspended particles from the flue gases. Jan 27, 2019 electrostatic precipitators have become the norm now in industries. Solar cooling solar heating thermal insulation underfloor air distribution. 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. Water is heated, turns into steam and spins a turbine which drives an electrical generator. Electrostatic precipitators esp are used to control fly ash emitting from the boilers of the power plants.
They are used in industries like steel plants, thermal energy plants. A project report on general overview of nspclrourkela thermal power plant and study of the electrostatic precipitator by sayantan jana under the guidance of. Sep 17, 2017 today we will learn about thermal power plant, its main components along with working and its advantages and disadvantages. 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. During my lectureship at r n modi engg college kota raj, i gave a power point presentation on thermal power plant. 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. Most power stations burn fossil fuels such as coal or oil to generate electricity for use. Redkoh industries switch mode power supply for electrostatic. Is there any remedies to identify dc earth fault source at the earliest and take. Nimesh gajjar jump to stage 2 jump to stage 3 jump to. Electrostatic precipitator esp is a particulate removal device that removes suspended particulate matter from combustible products using an electrostatic force. Growing energy demand subject to increasing investment in residential, construction and infrastructure sector by developing.
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. 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. Retrofit applications of the redkoh system typically permits the reuse of control cabinet components such as circuit breakers, contactors, pts, cts and control wiring. Electrostatic precipitator market with huge scope for demand and sales in this region owing to the rise in industrial activities in this region. 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 precipitators esp air quality control systems aqcs. Oct 08, 2016 introduction an electrostatic precipitator is a large, industrial emission control unit. 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. Ppt electrostatic precipitator esp powerpoint presentation free to download id. Secondary voltage and current are monitored in each field and the total power input to each esp is determined. 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. Electrostatic precipitator efficiency electrical4u.
Likewise, having more than one electrical field in parallel allows adjustments to compensate for their differences, so that. The main purpose of adopting electrostatic precipitator is to remove the fly ash carried by flue gas. An electrostatic precipitator system may include several sections energized from separate highvoltage supplies. As precipitators are operated in sparklimiting mode, power is terminated and the corona generation cycle re initiates.
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. View and download powerpoint presentations on electrostatic precipitator ppt. Electrostatic precipitator an overview sciencedirect. Electrostatic precipitator, its applications, advantages, at. If a rigid support of concrete or steel is used, the precipitator is placed on roller bearings or slide bearings. Electrostatic precipitator pollutioncontrol device.
Find powerpoint presentations and slides using the power of, find free presentations research about electrostatic precipitator ppt. 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. The gas flow distribution in electrostatic precipitator esp ducts of a thermal power plant was numerically simulated with cfd. An electrostatic precipitator esp is an electromechanical device which filters out particles fly ashfumessuspended dirt from airgas stream flue gas if from a. In india 65% of total power is generated by the thermal power stations. The active power is normally measured with a wattmeter or calculated by means of computer simulation. The performance of electrostatic precipitator esp is significantly affected by its complex flow distribution arising as a result of its complex inside geometry. China and india are the major markets during 20162021. This waste heat can go through a condenser and be disposed of with cooling water or in cooling towers.
You may view information about electrostatic precipitator esp. 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. 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. What is electrostatic precipitator definition from. 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. Wet electrostatic precipitators for utility applications wet esps for industrial applications. 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. 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.
Collecting plates are connected at or near thecenterbyrapperbeamswhichservesas an impact point for rapping system. Energy conservation is the very major concern in recent scenarios, mainly in power plants. Since many years the use of wesp in the metallurgical industry is. The active power cannot be expressed as a rated value because it varies with the esp load for the same rated esp mean current. But whether electrostatic precipitators perform the function expected from them can be determined by measuring the efficiency of the device. 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. 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.
The precipitator functions by applying energy only to the particulate matter being collected, without significantly impeding the flow of gases. This is an introduction to mitsubishi hitachi power systems environmental solutions, ltd. Introduction an electrostatic precipitator is a large, industrial emission control unit. The energy of a thermal power station not utilized in power production must leave the plant in the form of heat to the environment. A free powerpoint ppt presentation displayed as a flash slide show on id. The precipitator functions by applying energy only to the particulate matter being collected, without. Construction, working, operation and maintenance of electrostatic.
This video shows intallation progress of an electrostatic precipitator esp of thermal power plant. 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. Electrostatic precipitator in modern thermal power plant. Electrostatic precipitators esp collect dust in the flue gas produced by boiler, etc. Mar 29, 2017 electrostatic precipitator esp is a particulate removal device that removes suspended particulate matter from combustible products using an electrostatic force. Electrostatic precipitator is commonly used in modern fossilfired 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 does not contribute directly to the production of electricity in the thermal power plant, but it helps to keep the. What is an electrostatic precipitator in a thermal power plant. Thermal power plant and study of the electrostatic precipitator by sayantan jana under the guidance of j. Ppt thermal power plant powerpoint presentation free. Information on construction and working of electrostatic precipitators esps is given. In power plants, electrostatic precipitators esps are utilized to filter the fly ash from exhaust flue gas before passing it. 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.
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. A thermal power plant is a power plant in which the prime mover is stream. Disruptions of the normal corona process greatly reduce the esps collection efficiency, which in severe. The following work is done in accordance with north chennai thermal power station. Equipments used in ash handling system in thermal power plant. Analysis of heat rate improvement potential at coalfired power plants. Electrostatic precipitation is an extremely efficient way of filtering fine particles from a flowing gas. The electrostatic precipitator market is a fast growing market with high demand for electrostatic precipitator in thermal power plant and other. Electrostatic precipitator an overview sciencedirect topics. Esp to to remove the ash particulate matter from dust laden gas and is used in coal power plants. Total secondary power would not be an adequate indicator for a large multifield esp. Analysis of heat rate improvement potential at coalfired. Electrostatic precipitator free download as powerpoint presentation. 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.
Pm controlpm control xcyclones xbaghouses xesps xscrubbers xparticulate filters cyclones. 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. Dec 31, 2017 on this channel you can get education and knowledge for general issues and topics. High frequency power supply for electrostatic precipitators. Esps are used in chemical, paper, power sector units, etc but most exclusively it is used in coal based thermal power plants. If the waste heat is instead used for district heating, it is called cogeneration. Note the extremely high efficiencies, nearing 100%. Flow simulation in an electrostatic precipitator of a. Esp in thermal power plant is a filtration is used to remove dusts from flue gas using the. 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. Electrostatic precipitators have become the norm now in industries. This electrical equipment was first introduced by dr.
Wesp wet electrostatic precipitator kvt develops sustainable and ef. Ppt detailed report on global electrostatic precipitator. Many industrial, power generation and chemical processes produce unwanted fine. Power sector units, etc but most exclusively it is used in coal based thermal power plants. 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.
Ppt electrostatic precipitator esp powerpoint presentation. 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. Construction, working, operation and maintenance of. Hoppers are fitted below the electrostatic precipitator chamber for collecting dust particles. On the basis of the middle experiment model, gambit and icem cfd. Jan 01, 2016 this video shows intallation progress of an electrostatic precipitator esp of thermal power plant. Limited, rourkela certification this is to certify that the project entitled general overview of nspclroukela themal power plant and the study of the. 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. 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. In power plants, electrostatic precipitators esps are utilized to filter the fly ash from exhaust flue gas before passing it to the atmosphere. Electrostatic precipitator principle, applications. 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. An electrostatic precipitator esp is a panicle control device that uses electrical forces to move the panicles. Electrostatic precipitator chemistry electrical engineering.
Systems mhps contributes to air pollution control at thermal power plants. 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. It is designed to trap and remove dust particles from the exhaust gas stream flue gases of an industrial plant. But whether electrostatic precipitators perform the function expected from them can be. Construction of electrostatic precipitator above figure shows construction of a typical dry electrostatic precipitator. 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. 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, its applications, advantages. Electrostatic precipitator nature physical sciences.