28-08-2014, 10:19 AM
KOTA SUPER THERMAL POWER STATION SEMINAR REPORT
KOTA THERMAL POWER.pptx (Size: 1.64 MB / Downloads: 18)
INTRODUCTION OF K.S.T.P.S
KOTA SUPER THERMAL POWER PLANT IS A COAL BASED STEAM POWER PLANT .
IT IS LOCATED ON THE LEFT BANK OF CHAMBEL RIVER at the upstream of “KOTA BARRAGE”.
TOTAL GENERATION CAPACITY IS 1240MW.
Required 250 hectares land.
Generates electricity through fuels.
The project was proposed By the Central Electricity Authority In 1973
SITE SELECTION OF STEAM POWER PLANT
Nearest to the load center.
Availability of the water.
Availability of the coal.
Land Requirement.
Ash disposal
Transportation facility.
Distance from populated area
COAL CONVEYOR
This is a belt type of arrangement. The coal is transported to the power station by 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 into small pieces by 20 mm in order to increase it’s surface exposure .
Now the pulverized coal is fed to the boiler by COAL CONVEYOR.
BOILER
Pulverized coal is put in boiler furnace in which water is heated and circulated until the water is turned in to steam at the required pressure. Coal is burned in the boiler and ash produced after the complete combustion of coal is removed to the ash handling plant and then delivered to the ash storage plant for disposal.
The flue gases from the boiler make their journey through superheater economiser air pre heater and finally exhasted to atmosphere through the chiney.
SUPERHEATER
The steam produced in the boiler is wet and is passed through a superheater where it is dried and superheated (i.e ; stem temp. Increased) .
Superheating provides two principle benifits.Firstly the overall efficiency is increased secondly, too much codensation is avoided.
The superheated stem from the superheater fed to steam turbine through the main valve
AIR PREHEATER
The remaining heat of flue gases is utilised by air preheater. Air is drawn for the atmosphere by a forced draught fan and is passed through air preheater before supplying to the boiler furnace .
It extracts heat from flue gases and increase the temp. Of air used for coal combustion.
Benefits increased thermal efficiency &increased steam capacity per square meter of boiler surface.
ECONOMISER
An economiser is essentially a feed water heater and derives heat from the flue gases .The feed water is fed to the economiser before supplying to the boiler .The economiser extracts a part of heat of flue gases to increase the feed water temprature.
CONDENSER
Steam after rotating steam turbine comes to condenser. These condensers are heat exchangers which convert steam from its gaseous to its liquid state. In so doing, the latent heat of steam is given out inside the condenser.
GENERATOR
An alternator is an electromechanical device that converts mechanical energy of turbine into electrical energy. The steam turbine is coupled to an alternator .The electrical output from the alternator is delivered to the bus bars through transformer, ckt.Breaker, and isolater
TRANSFORMERS
It is a device that transfers electric energy from one alternating-current circuit to one or more other circuits, either increasing (stepping up) or reducing (stepping down) the voltage.
COOLING TOWERS
The condensate water after condensation is initially at high temperature. This hot water is passed to cooling towers. It is a tower in which atmospheric air circulates in direct or indirect contact with warmer water and the water is thereby cooled. Water, acting as the heat-transfer fluid, gives up heat to atmospheric air, and thus cooled, is recirculated through the system.
SMOKE STACK (CHIMNEY)
A chimney is a system for venting hot flue gases or smoke from a boiler, stove, furnace or fireplace to the outside atmosphere. They are typically almost vertical to ensure that the hot gases flow smoothly, drawing air into the combustion through the chimney effect .
High power voltage lines
Transformer is connected to high power voltage line,these voltage lines carries power to the the grid from where it distributed to the sub grids and then consumers
Conclusion
1.The effficiency is 29 to 33 %.
2.Coal ash can be used for cement production.
3.1000 mw power can be obtain.