Thermal efficiency of a thermal power plant is the ratio of electrical energy generated to the chemical energy of fuel consumed. While use of coal introduces both coal and ash handling requirements. One such system, most commonly used in the united states, is summarized in. In the coal based thermal power plants, where the initial process to generate electricity is the handling the huge or tremendous amount of coal. The initial process in coal based thermal power plant is coal handling. 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. Pulverised coal from the storage area called stack is taken to the boiler by means of coal handling equipment such as belt conveyors, bucket elevators etc. May 04, 2017 coal still is the main source of electricity products and for manufacture of steel and prime source of heat for boilers. Thermal based power plants can produce electricity from coal or other fuel sources. Requirement of ash handling system in thermal power plants coal is generally used as. Indian coal is managed using giant coal handling plants chps. Ash handling systems may employ different forms of pneumatic ash conveying or mechanical ash conveyors.
Ppt thermal power plant powerpoint presentation free to. Very finely sized fly ash often accounts for the major portion of the material conveyed in an ash handling system. Animation on ash handling process in thermal power. For a subcritical plant it is below 42% for a new plant. Ash handling plants shri balaji in thermal power plants, coal is generally used as fuel and hence ash is produced 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 thermal power plant working indian power sector. Bukpyeong thermal power plant, donghae power technology. Thermal power plant steam vapour power plant coal based power plant rankine cycle power plant prepared by. In a coal based thermal power plant, huge amount of ash is. Coal and ash handling in thermal power plant mcqs with answers.
In the thermal plants huge amount of the ash is produced,for coal combustion fly ash is the continuous by product. What a plant is generating is the plant utilization factor. Selection of site for thermal power plant nearness to the load centre. The system introduced in this paper will measure and. Coal handling plant of thermal power station seminar reportpdf ppt download abstract. Coal handling storage of coal the main purpose of storage of coal is to store the. Cost analysis of a coalfired power plant using the npv. Coal beneficiation technology 2007 initiatives, policies and practices m. 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. Ifcoalisdeliveredbytrucks,thereisnoneedofunloading device as the trucks may dump the coal to the outdoor storage.
An overview of ash handling plant in free download as powerpoint presentation. Ash handling options for coalfired power plants power. Dry ash collection at coal fired power plants and potential for wte. Ash produced in about 10 to 20% of the total coal burnt in the furnace. The valve can be used in either a dry fly ash system or the mac dry bottom ash system retrofit, if it includes vacuum pneumatic ash conveying to a silo.
In this paper, the cost data of various units of thermal power plant in terms of power output capacity have been fitted using power law with the help of the data collected from a literature search. Thermal power plant pressure dense phase pneumatic ash plc control system design. This factor is most important when dc supply system is adopted. Bottom ash system in this system, the ash slag discharged from the furnace is collected in water impounded scraper installed below bottom ash hopper.
Each fossil fuel power plant is a complex, customdesigned system. Anna university regulation 20 eee me6701 ppe notes, power plant engineering lecture handwritten notes for all 5 units with download link for eee 5th sem me6701 power plant engineering lecture handwritten notes are listed down for students to make perfect utilization and score maximum marks with our study materials power plant engineering. The coal has to size, processed, and handled which should be done effectively and efficiently. The system for a large modern power station is illustrated in fig 10. The 4,000mw consiss of five 800mw units and is the largest coal fired thermal power plant in the world supercritical boiler technology is being used for the first time in india in the mundra umpp. An overview of ash handling plant in talcher thermal power station presented by. Air slides are used as an alternative to the dust blowers. Handling of ash is a problem because ash coming out of the furnace is too hot, it is dusty and irritating to handle and is accompanied by some poisonous gases. Ash handling system of coalfired power plant is a advanced, economic. Thermal power plant free download project of php,java,asp. Pdf operation and maintenance of coal handling system in. 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.
Paper presentation on thermal power plant part 1 fuel used coal subtopic. For example, theres a story about a new 800 mw coal fired plant, located in germany, that is using a dry bottom ash handling technique known as drycon instead of traditional water. An overview of ash handling plant in energy technology chemistry. This circuit consists of coal storage, ash storage, coal handling and ash handling systems. It may be pumped into a disused quarry or transported from the power. A power point presentation on ash handling system madeash handling system of a thermal power plantbest ppt on presentation on coal handling plant. In a fossil fuel power plant the chemical energy stored in fossil fuels such as coal, fuel oil, natural gas or oil shale and oxygen of the air is converted successively into thermal energy, mechanical energy and, finally, electrical energy.
Steam is produced in a boiler using coal as fuel and it is used to drive the prime mover steam turbine. The power plant should be as near as possible to the load centre to the centre of load. Coal fired power plant designs, systems, and components 27 rankine steam cycle, such as steamturbine 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. Coal handling plant coal unloading system conveyor system crushing system feeding system. In the thermal power plants maximum requirements of fuel is a coal. The basic theory of condition based preventive maintenance is to propose routine inspection to identify any degradation in the integrity of the systems during their service life and to provide an early warning in order that remedial action can be taken. A typical ash handling system may employ vacuum pneumatic ash collection with ash conveying from several ash pick up stations and resulting in delivery to an ash storage silo for interim holding prior to load out for disposal or reuse. When it comes to ash handling, that means replacing water with another common medium. 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. General layout of thermal power plant site selection criterion of thermal power plant coal preparation. Thermal power plant coal handling power plant youtube. Coarse ash material such as bottom ash is most often crushed in clinker grinders crushers prior to being transported in the ash conveyor system. A typical pneumatic ash handling system will employ vacuum. An example of this method is presented in 1, regarding operation and maintenance of coal handling system in a thermal power plant.
Nov, 2016 the initial process in coal based thermal power plant is coal handling. Mw subcritical unit situated in north india for electricity generation. 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. Nimesh gajjar jump to stage 2 jump to stage 3 jump to. Coal handling system coal handling plant in thermal. Usually coal will be transported to plant through railway wagons if it is a pithead power station t. Introduction to thermal power plant general layout of thermal power plant site selection criterion of thermal power plant coal preparation coal storage ash handling. Jun 01, 20 ash handling system presentation transcript. Coal handling plants a complete details about chp equipments. In a coal based thermal power plant, the initial process in the power generation is coal handling. So that the transmission cost and losses are minimum. Google has many special features to help you find exactly what youre looking for. 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. Compared with actual situation of the current thermal power plant, this paper studies operation process of coal handling system in thermal power plant.
Coal is transported in thermal power station either by railways,roadways or rope ways. Requirement of ash handling system in thermal power plants coal is generally. Major parameters for the analysis of coal are moisture, volatile matter, ash and fixed carbon. It will be the first baseload thermal power plant in the country upon completion, and will comprise two units of 595mw each. Coal handling plant in a thermal power generating station.
Ash handling system a large quantity of ash is, produced in steam power plants using coal. Chapter three coalfired power plant designs, systems. Fly ash from thermal power plants waste management and overview. Boilers burning pulverized coal pc have bottom furnaces. Operation and maintenance of coal handling system in. Many power generators are already evaluating converting to dry bottom ash systems, assuming that epa will rule coal ash nonhazardous. The search for actions that can minimize speed variations in. The various steps involved in coal handling are as follows. Coal handling plant of thermal power station seminar reportpdfppt download abstract. The present study investigates the impact of various factors affecting coal fired power plant economics of 210 mw subcritical unit situated in north india for electricity generation. Implementation of quality management system for coal. Global and chinese pakistan thermal power plant industry, 2018 market research report thermal power plant industry, 202023 market research report is a professional and indepth study on the current state of the global pakistan thermal power plant industry with a focus on the chinese market.
The design of the ash handling plant is dependent upon the method of ash disposal. Thermal power plants have a low efficiency due to the involvement of heat exchanges. Before starting the plant, check which of the equipment is available and accordingly plan an appropriate path for the movement of coal. Analyze technical characteristics of coal handling system and operating characteristics of the relevant machinery and equipment. In plant handling it is referred to transferring coal from dead or live storage to the boiler. In electrical systems and equipment third edition, 1992. Pdf national seminar on thermal power plant performance. Ash handling system of a thermal power plant slideshare. Coastal gujarat power limited, a subsidiary of tata power, developed the project at mundra, gujarat. These benefits are why newer plants are considering adopting dry bottom ash handling. Mundra ultra mega power plant, gujarat power technology.
Coal beneficiation technology 2007 initiatives, policies. Coal delivery equipment is one of the major components of plant cost. Need for mechanized ash handling systems mechanized ash handling systems developed as the size of coal fired boilers increased beyond the sizes permitting manual handling of large quantity of ash. He has published several research papers in the area of bulk solids handling in top international journals. The 4,000mw consiss of five 800mw units and is the largest coalfired thermal power plant in the world. Apr 04, 2017 coal from the storage yard is transferred to the boiler furnace by means of coal handling equipments. Wet ash system is can be utilized for bottom ash handling with water impounded hopper and jet pumps for intermittent removal. Coal handling plant of thermal power station seminar report. Basically this is nothing but the residual part of the coal. Mundra ultra mega power plant umpp, indias first umpp, became fully operational in march 20. Global and chinese pakistan thermal power plant industry, 2018 market research report thermal power plant industry, 202023 market research report is a professional and in depth study on the current state of the global pakistan thermal power plant industry with a focus on the chinese market. 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.
Ash handling system in thermal power plant ash handling. Plants still using ponds to store ash byproduct have. Diagram of a typical coal fired thermal power station. Limited india for 5 years, where he designed several coal and ash handling systems for thermal power plants. Lay out of coal handling plant btps wt 1 wt 2 wt 3 b br house b b con. Before starting any equipment ensures that the equipment is not subject to a p. In a coal based thermal power plant, huge amount of ash is generated which has to be disposed off continuously. Thermal coal power plant is the huge industry which contributes majorly in energy production sector. The large ash particles are collected under the furnace in a waterfilled ash hopper, fly ash is collected in dust collectors with either an electrostatic precipitator or a baghouse. The coal fired process requires three different steps to turn energy released from burning coal to generating electricity for consumption. Thermal power plant pressure dense phase pneumatic ash plc. The function of coal handling plant in thermal power read more ash handling system in thermal power plant.
So, each energy saving step is of considerable importance towards the efficiency of thermal plant. Pressurized pneumatic ash conveying may also be employed. Coal fired power plants, while producing power, require a lot of water and produce a lot of pollutants like ash and co2. In steam or thermal power plants steam is used as the working fluid. Operation and maintenance of coal handling system in thermal. 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. Jun 23, 2015 as a result, power plants have thoroughly analyzed their production processes to find ways to minimize waste, achieve efficiency, promote environmentallyfriend procedures, and cut costs. This is achieved by raising the steam in the boilers, expanding it through the turbine and coupling the turbines to the generators which converts mechanical energy into electrical energy. Ppt thermal power plant powerpoint presentation free.
Tecpro systems limited is an established material handling company in india, engaged in providing turnkey solutions in bulk material handling systems, ash handling systems, balance of thermal power plant and epc of captive power plants plant and engineering, procurement and construction contracts. Coal and ash handling in thermal power plant mcqs with. Ash resulting during combustion of coal in the boiler furnace is removed and it is stored in ash storage devices through ash handling methods such as hydraulic system, mechanical conveyors, steam jet system etc. Ash handling plant an overview sciencedirect topics. Ash collected in economiser, primary air heater and secondary air heater hoppers drops continuously through suitable vertical pipe.
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. In case the coal is brought by railway wagons, ships or boats,theunloadingmaybedoneby carshakes,rotarycar dumpers,cranes. 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. Scribd is the worlds largest social reading and publishing site. Another way to characterize coals is to determine the thermal energy released when the coal is burned. Ensure that the path so planned, is clear for coal movement i. Coal handling system coal handling plant in thermal power plant. Pneumatic conveying systems are used to handle dry fly ash.
Coal handling plant chp is the main and major key system to transfer ton of coal fuel to the boiler plant. A power point presentation on ash handling system made by me and my friends. Ppt on ash handlin plant in the thermal 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. A coal based thermal power plant converts the chemical energy of the coal into electrical energy. Ash handling of thermal power plant ppt professional.
Material handling, and is a complex and vital part of the cpp. How coal is managed in the giant coal handling plants of. The conglomeration on coal and ash handling at the thermal power plants held on november 19 to 21. Jun 25, 2011 fly ash from thermal power plants waste management and overview. Swapan basu, ajay kumar debnath, in power plant instrumentation and control handbook, 2015. A free powerpoint ppt presentation displayed as a flash slide show on id. Ash handling systems ducon supplies both wet and dry type ash systems for power plants. 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. Note a thermal power plant of 400 mw capacity requires 5000 to 6000 tonnes of coal per day. 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. A simple cycle gas turbine achieves energy conversion efficiencies from 20 to 35%. Coal fired thermal power plant free download as powerpoint presentation.