Typically for a 2x500 mw plant based on indian coal, the amount of ash. Ash generated in power plant is about 30 40% of total coal consumption and hence the system is required to handle ash for its proper utilization or disposal. Coal handling plant in a thermal power generating station. Thermal power plant is also referred as coal thermal power plant and steam turbine power plant. The fuel is then fed to the boiler generating a large amount of combustion heat.
The current paper discusses the problems associated with fly ash and its handling and mitigation measures. Human factors in accident investigation ppt download. Taichung thermal power station, the worlds largest coalfired power station, in taichung, taiwan. After the dewatering at the sloping portion, moist ash is discharged to clinker crusher for onward disposal either through hydraulic sluice way to slurry pond or through belt conveyors to bottom ash storage silo for onward disposal. The heat energy is converted into mechanical energy by the steam turbine and the mechanical energy is used for generating power with the help of a generator. Ash handling system in thermal power plant ash handling. In the coal based thermal power plants, where the initial process to generate electricity is the handling the huge or tremendous amount of coal. Mar 22, 2018 thermal power plant or thermal power station is the place where we use the energy of heat to produce electric power, and its the most convenient sources of electric power generation, as we burn fuels such as oil, coal or liquefied natural gas to produce high temperature, highpressure steam then we use this steam to turn a steam turbine.
Coal handling plants a complete details about chp equipments. Ash handling systems ducon supplies both wet and dry type ash systems for power plants. Generally bituminous,brown or peat type coal are used as the fuel of coal basesd thermal power plant in a thermal power palnt, coal is burnt in a big boiler which produces steam at high pressure and temperature. Thermal power generation plant or thermal power station is the most conventional source of electric power. It is located on the west bank of the chambal river in kota chat online. Coal and ash handling in thermal power plant mcqs with answers. Nov, 2016 the initial process in coal based thermal power plant is coal handling.
Before going into detail of this topic, we will try to understand the line diagram of electric power generation plant. The report analyzes the power market scenario in the algeria includes thermal, nuclear, large hydro, pumped storage and renewable energy sources and provides future outlook with forecasts up to 2030. An alternative presentation of the results is in the form of bar graphs as shown in. The expansion of steam in turbine produces mechanical power which drives the alternator coupled to the turbine. Coal and ash handling in thermal power plant mcqs with answers ahsan 071919 good information and some more info like size of coal and equipment descriptions or dictionary of these terms to be included. Gland steam condenser gsc control min flow controlgland steam header. Wether the following certificate is valid and recognised by the factory inspector. 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. Thermal power plant or steam power plant is a generating station which converts heat energy of fossile fuels into electrical energy. Coal and ash handling in thermal power plant mcqs with answers ch ramakrishna 062216. Thermal efficiency of a thermal power plant is the ratio of electrical energy generated to the chemical energy of fuel consumed. The initial process in coal based thermal power plant is coal handling. Steam is produced in a boiler using coal as fuel and it is used to drive the prime mover steam turbine. In thermal power plants, coal is used as a fuel for generating electricity.
In this paper, changchun hightech thermal power plant unit 2 25mw ash delivery system is taken as object describing the configuration and project delivery process of pneumatic ash handling system, according to the control performance requirements of the ash handling system unit designed to using siemens s7200 type plc for the control core of. Thermal power plant or thermal power station is the place where we use the energy of heat to produce electric power, and its the most convenient sources of electric power generation, as we burn fuels such as oil, coal or liquefied natural gas to produce high temperature, highpressure steam then we use this steam to turn a steam turbine. The function of coal handling plant is automatic feeding of coal to the boiler furnace. Limited india for 5 years, where he designed several coal and ash handling systems for thermal power plants. Mechanized ash handling systems developed as the size of coal fired boilers increased beyond the sizes permitting manual handling of large quantity of ash. Thermal power station process flowchart and diagram. In thermal power plants coal is generally used as fuel and hence the ash is produced as the. After burning of coal, 40 % of total coal consumption is converted into ash which need to be properly disposedoff from the thermal power plant.
Indian coal is managed using giant coal handling plants chps. Since the amount of water required to cool the outgoing steam from the boiler is substantial, it is either taken from a nearby water source such as a river, or it is done through evaporation if the quantity of cooling. Pulverizing plant in modern thermal power plant, coal is pulverized i. Coal handling system coal handling plant in thermal power plant. Ash handling plant an overview sciencedirect topics. The most common types of ash include bottom ash, bed ash, fly ash and ash clinkers resulting from the combustion of coal, wood and other solid fuels. One important, but often overlooked factor of an efficient ash handling system, is its compatibility with your facility. A thermal power station is a power station in which heat energy is converted to electric power. A 200mw plant may require around 2000 tons of coal daily. The selection of firing method adopted for a particular power plant depends upon the following factors. It may be pumped into a disused quarry or transported from the power station. With options varying from fly ash to bottom ash conveyors, and pneumatic versus mechanical ash handling systems, our experts are ready to help evaluate which application is best for your plant. Ash collected in economiser, primary air heater and secondary air heater hoppers drops continuously through suitable vertical pipe.
The fuel is transported from mines via trains to the fuel storage facility in a power plant. Cooling water circuit this part of the thermal power plant deals with handling of the cooling water required in the system. Parts of thermal power plants bright hub engineering. In plant handling it is referred to transferring coal from dead or live storage to the boiler. He has published several research papers in the area of bulk solids handling in top international journals. Water is heated, turns into steam and spins a steam turbine which drives an electrical generator. 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. With options varying from fly ash to bottom ash conveyors, and pneumatic versus mechanical ash handling systems, our experts are ready to. Usually coal will be transported to plant through railway wagons if it is a pithead power station t. Thermal power plant uses steam energy for the generation of the electricity. Anoverviewofashhandlingplantin authorstream presentation. Still, now maximum energy is supplied by the coalbased thermal power plant. Mbe built the first ash handling plant for indian explosives limited, kanpur. Mbe acquired stateoftheart technology from ewb hungary, a world leader in the field for all types of ash and powdered material handling systems.
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. Coal handling plant of thermal power station seminar reportpdfppt download abstract. Environmental aspects of coal combustion residues from thermal. Apr, 2017 indoor material handling plays a critical role within every companys. Environmental issues in thermal power plant projects primarily. Thermal power plant pressure dense phase pneumatic ash plc. May 07, 2014 requirement of ash handling system in thermal power plants coal is generally used as fuel and hence the ash is produced as the byproduct of combustion. Table 31 ge energy radiantconvective igcc plant performance summary 100. Operation and maintenance of coal handling system in thermal power plant article pdf available in procedia engineering 26.
Ash handling system of a thermal power plant slideshare. Operation and maintenance of coal handling system in thermal power plant j. Operation and maintenance of coal handling system in thermal. Bottom ash is extracted from the trough continuously using high quality chains, sprockets and bars. Generation and collection process of bottom and fly ashes in a grate. Mar 15, 2020 thermal power generation plant or thermal power station is the most conventional source of electric power.
Majority of these additions would be coal based which will further add to the burgeoning problems of ash disposal. In a coal based thermal power plant, the initial process in the power generation is coal handling. Schematicflow diagram of an ashhandling plants wet bottom ash disposal system. Bottom ash handling system macawber beekay, ash handling. 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 total power consumption for the complete ash handling plant of two 2 units shall be worked out by using the following formula. In september 2005 one more unit was setup into keep with. Requirement of ash handling system in thermal power plant s coal is generally used as fuel and hence the ash is produced as the byproduct of combustion. Download the thermal power plants ehs guideline international. Thermal power generation plant or thermal power station. 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. The entire water requirement of the ashhandling system may be met with circulating water where the plant does not have a cooling tower facilitythat is, for a oncethrough system in coastal stations using lake or river water, or seawater.
After burning of coal, 40 % of total coal consumption is converted into. The direct cost of electric energy produced by a thermal power station is the result of cost of fuel, capital cost for the plant, operator labour, maintenance, and such factors as ash handling and disposal. After it passes through the turbine the steam is condensed in a condenser and recycled to where it was heated. Introduction in india 65% of total power is generated by the thermal power stations. Thermal power plants contribute maximum to the generation of power for any country in thermal generating. Coal is burnt in a boiler which converts water into steam. A power point presentation on ash handling system made by me and my friends. Wet ash system is can be utilized for bottom ash handling with water impounded hopper and jet pumps for intermittent removal. May 04, 2017 indian coal is managed using giant coal handling plants chps. Apr 04, 2017 in steam or thermal power plants steam is used as the working fluid. Kota thermal power plant is rajasthans first major coalfired power plant.
Pdeen bandhu choturam thermal power plant is a project of haryana power generation corporation limited hpgcl. Thermal power plant 1 no transcript 2 introduction in india 65 of total power is generated by the thermal power stations. Thermal power plant a thermal power plant converts the heat energy of coal into electrical energy. Coal is transported in thermal power station either by railways,roadways or rope ways. How coal is managed in the giant coal handling plants of. An overview of ash handling plant in talcher thermal power station presented by. Coal handling plant coal is transported to power station by rail or road and stored in coal storage plant and then pulverized. When the ash storage pond at tennessee valley authoritys tvas kingston fossil plant in harriman, tenn. Generally the power plants prefer dry fly ash disposal instead of making ash slurry from the fly ash and the reason is that the fly ash collected from the esp bottom hopper. Ash handling system in thermal power plant ash handling plant. Oct 24, 2016 coal handling plant coal is transported to power station by rail or road and stored in coal storage plant and then pulverized. Ken research the report provides in depth analysis on global thermal power market with forecasts up to 2030.
In fly ash handling system, the major objective is to collect and transport the fly ash from the ash hoppers of the esp to the fly ash silo or to the ash slurry making tank. In a coal based thermal power plant, huge amount of ash is generated which has to be disposed off continuously. The most common types of ash include bottom ash, bed ash, fly ash and ash clinkers resulting from the combustion of coal, wood and. Coal handling plant consists of track hopper,feeders, conveyor system, roller screen, crusher, stacker reclaimer, compressor,dfds system,ttr,pumps etc. Ppt thermal power plant powerpoint presentation free. Bottom ash ash generated below furnace of the thermal power plant is called the bottom ash. Operation and maintenance of coal handling system in. Fly ash from thermal power plants waste management and. Fossil fuels like coal, oil, natural gases are burnt in the boiler, a hot flue gases thus generated are used to heat the feed water. The disposal of ash from a large capacity power station is of same importance as ash is produced in large quantities. The entire water requirement of the ash handling system may be met with circulating water where the plant does not have a cooling tower facilitythat is, for a oncethrough system in coastal stations using lake or river water, or seawater. Swapan basu, ajay kumar debnath, in power plant instrumentation and control handbook, 2015.
Mar 18, 2017 thermal power plant uses steam energy for the generation of the electricity. Ash handling options for coalfired power plants power. The design of the ash handling plant is dependent upon the method of ash disposal. Ppt thermal power plant powerpoint presentation free to. In plant handling it is referred to transferring coal from dead or live storage to the boiler furnace. This steam under high pressure then expanded in stem turbine to rotate the continue reading construction and working of thermal power plant. Coal and ash handling in thermal power plant mcqs with. Coal handling plant of thermal power station seminar. Though thermal efficiency and overall efficiency of thermal power plant is comperatively less than other power plant like nuclear power plant but still it is very popular. Thermal power plant free download project of php,java. A thermal power plant burns enormous amounts of coal. Pdf operation and maintenance of coal handling system in.
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