Our system is fabricated and inspected precisely to enhance its technical performance. Maintenance of critical equipments for coal handling plants chp. Today we will study the definition, component, layout, working diagram, advantages, disadvantages, application, pdf of the thermal power plant thermal power plant. Coal fired power plants, while producing power, require a lot of water and produce a lot of pollutants like ash and co2. Many utility systems in the world have power plants operating with fossil fuel.
In either scenario, epa regulations will be more stringent with the elimination of wet ash handling and the phasing out of surface impoundments ponds for all coalfired power plants. Coal handling system coal handling plant in thermal power plant. Pdf equipments used at coal handling plant of a thermal. In the coal based thermal power plants, where the initial process to generate electricity is the handling the huge or tremendous amount of coal. Nov, 2016 the initial process in coal based thermal power plant is coal handling. Consequently, stocking of coal has to be done consciously and by respecting basing rules.
The coal fired process requires three different steps to turn energy released from burning coal to generating electricity for consumption. Development of condition based maintenance for coal handling. Reduction in auxiliary power consumption, reduction in flyash management costs at power plants, lowered esp. In a boiler, combustion of coal takes place with the help of air that comes through an air system. Operation and maintenance of coal handling system in. Existing pulverized coal plant types in the nems electricity market module. Usually coal will be transported to plant through railway wagons if it is a pithead power station t. The specification covers scope, design criteria, equipment features, quality. Basically conveyors are dumb, but once equipped with proper control system they yield efficient and safe plant operation.
Among the statesector power plants also, there is a wide performance range with more than 90 percent plf for some. Pdf operation and maintenance of coal handling system in. Hazards identification and risk assessment in thermal power plant. Sep 30, 2018 in thermal power plants, coal is used as a fuel for generating electricity. Ash handling system in thermal power plant coal handling plants. In brief we can say that receipt of coal from coal mines, weighing of coal, crushing it to required size and transferring the quantity of coal to various coal mill bunkers. In the 18 th century, the thermal power plant exists with a lot of improvements in the reciprocating steam engine this reciprocating steam engine is used to develop the steam and with the use of an electric generator. Water is heated, turns into steam and spins a steam turbine which drives an electrical generator. Our mission is to create energyefficient solutions and offer the best engineering service and products to our customer. In the 18 th century, the thermal power plant exists with a lot of improvements in the reciprocating steam engine this reciprocating steam engine is used to develop the steam and with the use of an electric generator makes or.
India has large deposit of coal about 170 billion tonnes, 5th largest in world. Coal handling plant coal transported to the plant by the rail line and carrier trucks. The fuel transported to the plant is generally bigger in particle size and before it is fed to the boiler furnace it is broken down into smaller pieces using crushers. Commonly thermal power plants uses coal as the main source i. Therefore, the first thing we should know is how much energy there is in coal. More than 60% of electric power is produced by steam plants in india. Energy information administration analysis of heat rate improvement potential at coalfired power plants 3. Operation and maintenance of coal handling system in thermal. Compared with actual situation of the current thermal power plant, this paper studies operation process of coal handling system in thermal power plant. An intelligent conveyor control system for coal handling. The steam, at tremendous pressure, flows into a turbine, which spins a generator to produce electricity. Environment impact assessment of thermal power plant for.
Sensor based effective monitoring of coal handling system chs. Jun 17, 2010 analysis of coal chemical analysis of coal. The coal plant at millmerran power station has been experiencing difficulties with the transfer of wet coal in the plant. The coalfired process requires three different steps to turn energy released from burning coal to generating electricity for consumption. A thermal power station is a power station in which heat energy is converted to electric power. After burning of coal, 40 % of total coal consumption is converted into ash which need to be properly disposedoff from the thermal power plant. Unit1 thermal power stations introduction thermal energy is the major source of power generation in india. This is the responsibility and duty of the chp and its staff. A coal handling plant chp is set in every power station to handle. This coal is transfer from the underground bunker to crusher by series of conveyer belt. It burns coal to generate heat that is used to boil the water present to produce steam.
Strengthening operations and maintenance practices in state. The initial process in coal based thermal power plant is coal handling. After it passes through the turbine the steam is condensed in a condenser and recycled to where it was heated. 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. Sample of coal is randomly collected from each rake and detailed chemical analysis, calculation of calorific value is carried out and is confirmed whether it is as per agreement with the coal mines or not. What is the overall efficiency of the thermal power plant or steam power plant. Thermal power plant, coal handling process youtube. Pdf compared with actual situation of the current thermal power plant, this paper studies operation process of coal handling system in thermal power. Project overview the blcp power plant is situated in the map ta phut. In thermal power plants, coal is used as a fuel for generating electricity.
In case the coal is brought by railway wagons, ships or boats,theunloadingmaybedoneby carshakes,rotarycar dumpers,cranes. Thermal based power plants can produce electricity from coal or other fuel sources. Oct 02, 2015 modern thermal power plant site selection criterion coal storage coal preparation ash handling ash disposal electrostatic precipitator slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Energy content of coal is given in terms of kilojoules kj per kilogram kg of coal as the gross calorific value gcv or. Design and construction overview of the biggest coal fired. The failures of these equipments have led to high maintenance. A coal fired power station or coal power plant is a thermal power station which burns coal to generate electricity.
Sep 17, 2017 today we will learn about thermal power plant, its main components along with working and its advantages and disadvantages. Coal and ash handling in thermal power plant mcqs with answers. Thermalbased power plants can produce electricity from coal or other fuel sources. Today we will learn about thermal power plant, its main components along with working and its advantages and disadvantages.
Coalfired power stations generate over a third of the worlds electricity but cause hundreds of thousands of early deaths each year, mainly from air pollution. In the thermal power plants maximum requirements of fuel is a coal. Operation and maintenance of coal handling system in thermal power plant j. The boiler is one of the main equipment in a coal power plant. Bottom ash ash generated below furnace of the thermal power plant is called the bottom ash. Because of the large number of mechanical involved, we can sort as we used it, the important part includes unloading coal mechanical, coal yard, transport and accessory equipment. Coal handling in thermal power plant seminar report pdf. Coal fired power stations generate over a third of the worlds electricity but cause hundreds of thousands of early deaths each year, mainly from air pollution. In a coal based thermal power plant, the initial process in the power generation is coal handling. The balance of plant bop controls for a power plant are defined as the controls outside the main power plant control, such as controls pertinent to off sites like a coalhandling plant, ashhandling plant, etc. Thermal power station process flowchart and diagram. Hazards identification and risk assessment in thermal power.
Thermal efficiency of steam power plant is defined as the ratio of heat equivalent of mechanical energy transmitted to the turbine shaft to the heat of combustion. Coal is transported in thermal power station either by railways,roadways or rope ways. Thermal power plant, coal handling process viral video. The control systems used for these conveyors are important for operating safe plant. Investigation of various maintenance parameters for auxiliaries in a. There are varieties of critical equipments in coal handling plants. Ash handling system in thermal power plant ash handling. Development of condition based maintenance for coal. An intelligent conveyor control system for coal handling plant of. Ensuring the availability of coal at bunker for smooth and continuous running of main plant at 600 mw. The coal will be unloaded and transported to the coal yard by conveyor belts, before being delivered to the bunker bay in the main station building via a bucket wheel stacker. Potential source of water pollution 1 sources of water pollution cooling tower blow down,boiler blow down, demineralisation dm plant effluent, coal handling plant dust suppression,ash handling. Coal handling plant in a thermal power generating station. Pdf automation of coal handling plant researchgate.
Ifcoalisdeliveredbytrucks,thereisnoneedofunloading device as the trucks may dump the coal to the outdoor storage. Operation and maintenance of coal handling system in thermal power plant article pdf available in procedia engineering 26. Coal and ash handling in thermal power plant mcqs with answers q1. Hazards identification and risk assessment in thermal. However, some negative developments are observed in various characteristics of coal and important problems may emerge because of its long time storing in open areas. Ash handling plant an overview sciencedirect topics. How coal is managed in the giant coal handling plants of india. Mar 30, 2017 thermal power plant, coal handling process viral video. The coal handling systems are widely used in coalfuel based thermal power plants to transfer coal from wagon tipple hopper using beltbucket conveyors, truck, etc. Ash handling options for coalfired power plants power. Vinh tan 4 thermal power plant, binh thuan power technology. Coal handling at vinh tan 4 thermal power project vinh tan 4 plant will use approximately 2.
How to calculate the coal quantity used in a power plant. The function of coal handling plant in thermal power plant is to receive, process, store, feed the coal bunkers consistently over entire life of the power plant. A coalfired power station or coal power plant is a thermal power station which burns coal to generate electricity. The development of new technologies for the handling of coal can thus contribute to making the use of coal more efficient and sustainable. It also processes the raw coal to make it suitable for boiler opeartion. Aug 09, 2016 introduction to thermal power plant general layout of thermal power plant site selection criterion of thermal power plant coal preparation coal storage ash handling electrostatic precipitator. In either scenario, epa regulations will be more stringent with the elimination of wet ash handling and the phasing out of surface impoundments ponds for all coal fired power plants. Thermal power stations produce electricity by burning fuel in a boiler to heat water to produce steam. Also it is equally important to have a sustained flow of this fuel to maintain uninterrupted power generation. Coal handling system in thermal power plant, usually means the technique procedure that coal from loading and unloading outside the factory to boiler coal storage. The steam is cooled, condensed back into water, and returned to the boiler to start the process over. The fuel is transported from mines via trains to the fuel storage facility in a power plant. These problems have led to a reduction in the availability of coal plant and blockages in the silos.
Equipments used at coal handling plant of a thermal power plant. Potential source of water pollution 1 sources of water pollution cooling tower blow down,boiler blow down, demineralisation dm plant effluent,coal handling plant dust suppression,ash handling. Plant type particulate controls so2 controls nox controls mercury controls carbon controls. Fuel handling system for power plant coal handling plant. Generally thermal efficiency of the steam power plant will be in the range of 3035%. Learn how the process works as well as interesting. Conveyors are seen on virtually all in the coal handling plant chp. So in this article i will discuss the overall processes carried out at a coal handling plant in a coal based thermal power generating station. The plant load factor plf of statesector thermal power plants in india in 200607 was on an average 70. Hence adequate emphasis needs to be given for its proper handling and storage.
Dec 14, 2019 today we will study the definition, component, layout, working diagram, advantages, disadvantages, application, pdf of the thermal power plant thermal power plant. This article concentrates on automation trends in largescale coal handling systems based on current and future abb projects. Analysis of heat rate improvement potential at coalfired. Senior engineer operation resume example avantha power. All these auxiliary and off site plants have been covered in chapter ii and chapter vii, main clause 2.
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