Thermal Power Plant In India Pdf File

Thermal power plant in india pdf file

At present A coal based thermal power plant converts the chemical energy of the coal into electrical energy. 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.

Introductory overview.

List of Important Hydro, Thermal & Nuclear Power Plants in India [PDF]

In a coal based power plant coal is transported from coal mines to the power plant by railway in wagons or in a merry-go-round system. Coal is unloaded from the wagons to a moving underground conveyor belt.

This coal from the mines is of no uniform size.

Thermal power plant in india pdf file

So it is taken to the Crusher house and crushed to a size of 20mm. From the crusher house the coal is either stored in dead storage generally 40 days coal supply which serves as coal supply in case of coal supply bottleneck or to the live storage 8 hours coal supply in the raw coal bunker in the boiler house.

Thermal power plant in india pdf file

The Coal Mills or pulverizer pulverizes the coal to mesh size. The powdered coal from the coal mills is carried to the boiler in coal pipes by high pressure hot air.

The pulverized coal air mixture is burnt in the boiler in the combustion zone. Generally in modern boilers tangential firing system is used i.

Thermal power plant in india pdf file

The temperature in fire ball is of the order of deg. The boiler is a water tube boiler hanging from the top. Water is converted to steam in the boiler and steam is separated from water in the boiler Drum.

The saturated steam from the boiler drum is taken to the Low Temperature Superheater, Platen Superheater and Final Superheater respectively for superheating. In the HPT the steam pressure is utilized to rotate the turbine and the resultant is rotational energy.

From the HPT the out coming steam is taken to the Reheater in the boiler to increase its temperature as the steam becomes wet at the HPT outlet. The outlet of the LPT is sent to the condenser for condensing back to water by a cooling water system.

This condensed water is collected in the Hotwell and is again sent to the boiler in a closed cycle. The rotational energy imparted to the turbine by high pressure steam is converted to electrical energy in the Generator. Diagram of a typical coal-fired thermal power station. There are two types of storage:. A Boiler or steam generator essentially is a container into which water can be fed and steam can be taken out at desired pressure, temperature and flow.

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This calls for application of heat on the container. For that the boiler should have a facility to burn a fuel and release the heat. The functions of a boiler thus can be stated as It is located below the LPSH in the boiler and above pre heater. It is there to improve the efficiency of boiler by extracting heat from flue gases to heat water and send it to boiler drum. The heat transfer area required for evaporation reduced considerably.

The heat carried out with the flue gases coming out of economiser are further utilized for preheating the air before supplying to the combustion chamber. It is a necessary equipment for supply of hot air for drying the coal in pulverized fuel systems to facilitate grinding and satisfactory combustion of fuel in the furnace.

Power plant furnaces may have a reheater section containing tubes heated by hot flue gases outside the tubes. Exhaust steam from the high pressure turbine is rerouted to go inside the reheater tubes to pickup more energy to go drive intermediate or lower pressure turbines.

Steam turbines have been used predominantly as prime mover in all thermal power stations. The steam turbines are mainly divided into two groups: -. There is a high pressure turbine at one end, followed by an intermediate pressure turbine, two low pressure turbines, and the generator.

The condenser condenses the steam from the exhaust of the turbine into liquid to allow it to be pumped.

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The functions of a condenser are We normally use surface condenser although there is one direct contact condenser as well. In direct contact type exhaust steam is mixed with directly with D.

M cooling water. Boiler feed pump is a multi stage pump provided for pumping feed water to economiser. BFP is the biggest auxiliary equipment after Boiler and Turbine. The cooling tower is a semi-enclosed device for evaporative cooling of water by contact with air. The hot water coming out from the condenser is fed to the tower on the top and allowed to tickle in form of thin sheets or drops.

The air flows from bottom of the tower or perpendicular to the direction of water flow and then exhausts to the atmosphere after effective cooling. In a boiler it is essential to supply a controlled amount of air to the furnace for effective combustion of fuel and to evacuate hot gases formed in the furnace through the various heat transfer area of the boiler.

This can be done by using a chimney or mechanical device such as fans which acts as pump. When the required flow of air and flue gas through a boiler can be obtained by the stack chimney alone, the system is called natural draught.

When the gas within the stack is hot, its specific weight will be less than the cool air outside; therefore the unit pressure at the base of stack resulting from weight of the column of hot gas within the stack will be less than the column of extreme cool air.

The difference in the pressure will cause a flow of gas through opening in base of stack.

Thermal Power Plants/Stations in India

Also the chimney is form of nozzle, so the pressure at top is very small and gases flow from high pressure to low pressure at the top. Forced draught : — In this system a fan called Forced draught fan is installed at the inlet of the boiler.

This fan forces the atmospheric air through the boiler furnace and pushes out the hot gases from the furnace through superheater, reheater, economiser and air heater to stacks. Induced draught : — Here a fan called ID fan is provided at the outlet of boiler, that is, just before the chimney.

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This fan sucks hot gases from the furnace through the superheaters, economiser, reheater and discharges gas into the chimney. This results in the furnace pressure lower than atmosphere and affects the flow of air from outside to the furnace. The FD fan is utilized to draw control quantity of air from atmosphere and force the same into furnace. The ID fan sucks the product of combustion from furnace and discharges into chimney.

The point where draught is zero is called balancing point. The disposal of ash from a large capacity power station is of same importance as ash is produced in large quantities. Ash handling is a major problem. The ash is collected directly through the ash outlet door from the boiler into the container from manually. The precipitator has plate banks A-F which are insulated from each other between which the flue gases are made to pass.

The dust particles are ionized and attracted by charged electrodes. The electrodes are maintained at 60KV.

Thermal power plant in india pdf file

Hammering is done to the plates so that fly ash comes down and collect at the bottom. The fly ash is dry form is used in cement manufacture. Generator or Alternator is the electrical end of a turbo-generator set. It is generally known as the piece of equipment that converts the mechanical energy of turbine into electricity. The generation of electricity is based on the principle of electromagnetic induction. Advantages of coal based thermal Power Plant. Disadvantages of coal based thermal Power Plant.

GK> List of All Thermal power Plants in India – State Wise [PDF]

Major Thermal Power Plants in India. We hereby require thermal power companies contact details for transportation of black oil by road tankers With Rergars Neeraj Kind request to please share installed capacities and utilisation or PLF of all Thermal power plants in India….

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I would like to know what capacity of booler is required for 10 mw thermal power plant. Please rite to info indianpowersector. The installation in the other MW power plant will be done in the month of October during the proposed maintenance shutdown of the concerned power plant. Currently, they are operating the cooling tower at 2. This is the biggest achievement in the history of Scaleban equipment, as the most reputed power producer of the country has joined hands with us to establish the sustainable, most efficient and cost effective solution for zero discharge with zero scaling.

Thermal Power Plant Pdf

NTPC, after gaining confidence in our technology through in depth study of theoretical aspects and in situ analysis of the performance of the equipment at our client site has joined us in our mission to conserve water with zero scaling. It is evident that conventional methods for stopping scale deposition in heat ex-changer surfaces are not efficient enough to target this specific problem of the industry.

The cooling tower can be operated at very high COC of 15 to 20 as against 3 to 5 of conventional methods. Operations at higher COC will lead to minimization of blow down to almost negligible.

Thermal power plant in india pdf file

There is lot of water conservation involved with use of Scaleban Technology. Thus Scaleban has initiated a march towards establishment of a cost effective, most efficient and sustainable solution for the achievement of zero liquid discharge with water conservation and zero scaling.

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Most importantly, Scaleban provides guaranteed zero scale condition in the condenser and other heat exchangers for a period of 20 years without use of Soft water and anti scalant chemicals.

Scale free condensers leads to constant vacuum and specific steam consumption maintained in specified ideal range. The product is manufactured by State of the Art technology which keeps the product a step ahead of all the other kind of water treatment technologies available in market.

Scaleban with no reject of water is the maintenance free mechanical equipment and does not require any energy input for its operation. Scaleban can proudly claim the maximum conservation of water and energy on account of use of this revolutionary equipment as compared with any other technology available in the world.

Dear sir, The above the comments,and information are use full,i need power plant related updates and discussion and technical knowledge sharing groups mail id or technical persons mail id.

Thermal power plant in india pdf file

I am writing a report on industrial water use efficiency in India. I have a questionnaire of 2 pages I want to have an interview with 5 to 10 thermal power plant in Deli or nearby places if you can help me please.

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Many of the older machines in the power plants will have only Hydraulic Governors. We can convert them to Electronic Governors which has a lot of advantages.