Khalil department of mechanical power engineering, cairo university, cairo, egypt. Modification of coal handling system in boiler power plant. Development of condition based maintenance for coal handling. When steam power plants are operating in grid demand mode, they are required to ramp up faster and more often than they were originally designed tomaking realtime monitoring especially important. If the reprint or republication includes ed material, the credit should also state. Coal still is the main source of electricity products and for manufacture of steel and prime source of heat for boilers. When i began my power industry career years ago initially in the chemistry lab of a coal fired power plant, the criticality of proper chemistry control of steam boilers, cooling water systems. The control system, which will replace the existing system, must overcome all the drawbacks of old system.
The heart of big stone plant is the 500,000kilowatt turbine generator. The energy efficiency of a conventional thermal power station is defined as saleable energy produced as a percent of the heating value of the fuel consumed. Operation and maintenance of coal handling system in thermal. 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. In the thermal power plants maximum requirements of fuel is a coal. This provides general layout of thermal power plant, coal handling plant. Coal fired power plant designs, systems, and components 27 rankine steam cycle, such as steam turbine generators and feedwater and cooling systems used in conventional coal fired power plants to produce power, are also used in other thermal steam power systems, such as natural gas combinedcycle operations. Ash handling options for coalfired power plants power. Operation and maintenance of coal handling system in thermal power plant article pdf available in procedia engineering 26. Storage of coal is primarily a matter of protection against coal strikes, failure of the transportation system and general coal shortages. Steps of coal handling system in thermal power process for coal handling in power plant. All these auxiliary and off site plants have been covered in chapter ii and chapter vii, main clause 2. The steam is then cooled, condensed back into water and returned to the. Dec 05, 2015 this video shows the coal handling system which transfers coal from jetty to raw coal bunkers.
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. After further size reduction, the coal enters 12 cyclone burners that fuel the 26storytall boiler. Coal handling plant can handle coal from its receipt to storage, reclamation, preparation until the final point of use in thermal power plant. The steam produced, under tremendous pressure, flows into a turbine, which spins a generator to create electricity. This video shows the coal handling system which transfers coal from jetty to raw coal bunkers.
The clean combustion system steam generator has been proven in pilot testing to increase coal power plant efficiency while reducing emission control costs. Coal and ash handling in thermal power plant mcqs with. Anyone wishing to make further use of ed material, by itself and apart from this text, should seek necessary permission. Pdf compared with actual situation of the current thermal power plant, this paper studies operation process of coal handling system in thermal power. Almost all chp these days implies reactive maintenance with support of preventive maintenance. Fundamentals, troubleshooting maintenance of ash handling troubleshooting maintenance of ash handling plants in a coal based thermal power plant. Aug 21, 2016 necessity of coal handling system a 600mw power plant handles about 7200 tons of coals per day. This coal is transfer from the underground bunker to crusher by series of conveyer belt. The system includes transfer tower, belt conveyor, coal shed, tripper car, runoff pond, coal control. Coal handling at utilities requires specialized technology and equipment from unloading to crushing and dust control to fire protection. Compared with actual situation of the current thermal power plant, this paper studies operation process of coal handling system in thermal power plant. 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. A series of such switches are arranged in series at a 1m distance on the side of.
Coal handling system coal handling plant in thermal power plant. Coal handling system complete coal unloading facility, coal storage and. Coal is transported in thermal power station either by railways,roadways or rope ways. 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 coal handling plant, ash handling plant, etc. Senior engineer operation resume example avantha power. Operation and maintenance of coal handling system in thermal power plant j. The 400mw plant uses five pulverizers for bituminous and prb cases, and six for lignite. Coal plays a vital role in electricity generation worldwide. The coal is transported to the steam power station by road or rail and is stored in the coal storage plant. From the coal storage plant, coal is delivered to the coal handling plant where it is pulverized i.
Coal handling system coal handling plant in thermal. How coal is managed in the giant coal handling plants of. This article provides an overview of fossilfuel power plant ffpp con. First, a brief introduction of ffpp fundamentals and con. Ensuring the availability of coal at bunker for smooth and continuous running of main plant at 600 mw. The whole system will work in an intelligent procedure which is faster, reliable and less maintaining cost. Hazards identification and risk assessment in thermal power plant. Depending on the end use of coal, the chp facility processes coal to the correct size, making it suitable for boiler. Coal handling plant in a thermal power generating station. Necessity of coal handling system a 600mw power plant handles about 7200 tons of coals per day.
May 04, 2017 coal still is the main source of electricity products and for manufacture of steel and prime source of heat for boilers. Bottom ash handling system macawber beekay, ash handling. Our digital power plant software interprets data from more than 10,000 sensors to improve coal fired steam power plant performance. Steam power plant and coal handling plant slideshare. Steam power plant construction,working, advantages and. In unit system, each burner of the plant in fired by one or more unit pulverizers connected to the burners, while in central system, the fuel is pulverized in the central plant and then distributed to each furnace with the help of high pressurized air currents. If we talk about the overall efficiency of steam power plant, than is about 35 % to 41% which is low. Coal handling storage of coal the main purpose of storage of coal is to store the coal for a period of 30 to 90 days, therefore the plant is not required to be shut down due to failure of normal supply of coal. The following equipment used in coal handling plant. 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.
The crushed coal is then transported to the bowl mill by coal. Coal handling plant consists of track hopper,feeders, conveyor system, roller screen, crusher, stacker reclaimer, compressor,dfds system,ttr,pumps etc. Coal fired thermal power plant steam boiler scribd. Key plant data 2 turbines 148,000 kilowatts 2 generators 152,235 kilovoltampere 2 boilers 1,119,000 pounds of steam per hour transmission outlet 128,800 volts fuel subbituminous coal and hydropower coalhandling system conveys 400 tons per hour for more information hoot lake plant 1012 water plant road fergus falls, mn 56537 2187398100 otter. Operation and maintenance of coal handling system in. Indian coal is managed using giant coal handling plants chps. It also processes the raw coal to make it suitable for boiler opeartion.
More than 60% of electric power is produced by steam plants in india. Army, usa, technical manual tm 58116, electric power plant design. Coal handling plants a complete details about chp equipments. Coal handling safety risks of unwanted combustion potentially causing injury, damage and downtime occur everywhere that coal is handled, processed or stored. Chapter three coalfired power plant designs, systems, and. In simple coal handling systems following equipment are used in old days. Macawber beekays product profile includes jet pumping system for intermittent removal of bottom ash collected at furnace bottom of pf type boilers. C 241 262 94 43 table 2 environmental limitations at the stack outlet item.
Coal handling plant coal transported to the plant by the rail line and carrier trucks. Coalfired plants produce electricity by burning coal in a boiler to produce steam. Because the energy in the coal is greater than the energy delivered as. This coal is transported up to the coal storage bunkers through conveyor belts. This high pressurized water is heated into a boiler which converts it into high pressurized super heated steam. Coal needs to be stored at various stages of the preparation process, and conveyed. Nov, 2016 the initial process in coal based thermal power plant is coal handling. Peter muhlbach, abb automation gmbh, germany, discusses a complete materials handling solution for coal fired power plants. We also provide nextgeneration power systems, such as integrated coal gasification. In a coal based thermal power plant, the initial process in the power generation is coal handling. An intelligent conveyor control system for coal handling.
Pollutants conveyed in stormwater discharges from steam electric generating facilities, including coal handling areas, will vary. Ducon supplies complete coal handling systems for coal fired boilers. The running cost of steam power plant is comparatively high because of fuel, maintenance etc. Steam power plant configuration, design, and control. 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. Fuel handling system for power plant coal handling plant. Description about layout of steam power plant the layout of a modern steam power plant comprises of the following four circuits. System comprises of water impounded refractory lined bottom ash hopper bah of adequate capacity with water seal trough and dip plates. 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.
The initial process in coal based thermal power plant is coal handling. 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. Coal handling is the essential preparation of coal for the feeding coal to the. 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. Pdf operation and maintenance of coal handling system in. Application of system analysis for thermal power plant heat. Our system is fabricated and inspected precisely to enhance its technical performance. Steam power plants mitsubishi hitachi power systems. Steam electric power generating facilities, including coal handling areas. Coal crushing equipment of coal handling plant system in the thermal power. The fuel is transported from mines via trains to the fuel storage facility in a power plant.
India has large deposit of coal about 170 billion tonnes, 5th largest in world. 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. Conveyor belt system construction of conveyor belt conveyor. Coal and ash handling systems in thermal power projects. Project overview the blcp power plant is situated in the map ta phut. What is the overall efficiency of the thermal power plant or steam power plant. Coal from the coal wagons is unloaded by tipplers in the coal handling plant. Power plant engineering notes pdf ppe notes pdf book starts with the topics introduction, boiler, classification of boilers, fire tube boiler, water tube boilers, introduction, classification of a steam turbine, simple impulse turbines. From the coal storage plant, coal is delivered to the coal handling plant where it is pulverised i. Coal handling system complete coal unloading facility, coal storage and transport system and conveyor system electrostatic precipitator fixed electrode system ash handling system flue gas desulfurization system seawater desulfurization system 7%o2, dry, 1atm, 25deg. What are the various operation and maintenance activities of. 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. Coal handling system in thermal power plant youtube.
Design and construction overview of the biggest coal fired. Keep monitoring all the process parameters of the btg. Anyone wishing to make further use of ed material, by itself and apart from this text, should seek necessary permission directly from the proprietors. Development of condition based maintenance for coal. The fuel is then fed to the boiler generating a large amount of combustion heat. This coal is transported up to the coal storage bunkers. What pollutants are associated with activities at my facility. Overview of the biggest coal fired power plant in thailand blcp power plant, developed by private. Process understanding and process control which involves optimization of all parameters based. Coal and ash handling in thermal power plant mcqs with answers. What are the various operation and maintenance activities. The two methods used to feed the pulverized fuel to the combustion chamber of the power plant.
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. This high energized steam passes through steam turbine a mechanical device which converts flow energy of fluid into mechanical energy and. Chapter three coalfired power plant designs, systems. Generally thermal efficiency of the steam power plant will be in the range of 3035%. While the environmental impact assessment eia process is common to power plants fired by all fuels, the impact mitigation measures recommended and inputs for better public participation, in this handbook, will focus on power plants fired by coal, which is considered the dirtiest fuel. Life cycle assessment of coalfired power production. A simple cycle gas turbine achieves energy conversion efficiencies from 20 to 35%. Many utility systems in the world have power plants operating with fossil fuel.
Thermal power station process flowchart and diagram. Pulverized coalfired power plant 6% 10% 35% 18% 4% 12% 5% 3% 1% 6% 1% source. Hazards identification and risk assessment in thermal. The system, which is suggested, will work by only using tachometer, load cell and electronic cards in place of relays. Maintenance of critical equipments for coal handling plants chp.
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