21-11-2012, 12:21 PM
SUPER THERMAL POWER STATION SURATGARH
SUPER THERMAL POWER.pdf (Size: 1.09 MB / Downloads: 169)
ABOUT PLANT
Rajasthan Rajya Vidyut Utpadan Nigam Lmtd.(RVUN) established under companies Act- 1956 by Government of Rajasthan on 19.7.2000 is engaged primarily in the business of GENERATION OF ELECTRICITY.
At present the total installed capacity of various Thermal and Hydel Power Stations owned and run by RVUN is 2086.85.
The operation and maintenance of Rana Pratap Sagar(172 MW) And jawahar Sagar (99MW) Hydel Power Stations (owned by RVUN being shared project with MP State) is also carried out by RVUN.
With the commissioning of Unit #4 of 250MW at STPS it has become FIRST SUPER THERMAL POWER STATION OF RAJASTAN.
With Unit #1 of STPS was commissioned on coal firing on 4.10.1998 and commercial operation of the unit was declared from 1.2.1999. The unit was dedicated to the Nation by Hon’ble Chief Minister of Rajasthan Shri Ashok Gehlot on 3.10.1999.
The foundation stone for Unit # 3 and Unit # 4 under STPS stage – II was laid by Hon’ble Chief Minister of Rajasthan Shri Ashok Gehlot on 3.10.1999.
250MW Unit # 2 of STPS was commissioned on 28.3.2000 and was put on commercial operation from 16.7.2000. It saved Rs.80 crores due to early start of generation. The Unit was dedicated to the Nation by Hon’ble leader of Opposition, Lok Sabha Smt. Sonia Gandhi on 13.10.2000.
INTRODUCTION
GENERAL PLANT OVERVIEW
First of all coal zone and collection of coal comes in miles by the mean of CHP (Coal Handling Plant). CHP is the biggest site of coal like belt Conveyors, bunker or crusher house etc. Belt conveyor is used to lift the coal, cleaning collection or hammering process in the Bunker or Crasher House and Stacker &declaimer device is used to store or collect the coal in coal yard. The size of coal which enters the mill is about 25mm each. The ball and tube mill is used in the power station. The coal, which was entering in the mill, grinds in the mill up to the powdered form. This powdered form of coal sends to the boiler Furnace where this coal burns and generate heat. Initially the liquid fuel (Diesel + Stream) is used to generate the heat. The air is also used with coal in furnace for generating the flame heat. Water flow in tube which is mounted around a wall of boiler, this water comes on the drum after crossing the Economizer because the purpose of goes on aborting heat at constant pressure and is evident by rise in the temperature. A stage reaches where water begins to boil and there is no rise in temperature at this stage stream is formed. Burnt coal converts in to ash some one of flue gasses because the temperature of flue gasses is very high so if we went to increase the efficiency of the system these flue gasses flow in many stages like, Super heater, air preheater & Economizer.
LOCATION OF 1250 MW SUPER THERMAL POWER STATION (STPS)
The resinous project of Rajasthan, the Super Thermal Power Station, and Suratgarh is situated near village Thukrana about 27 km. from Suratgarh city in sriganganagar district. The site was considered an ideal location for setting up a thermal power station due to availability of land, water, transmission line and cheap labour. A total land area of 5029 bighas been acquired for the power station and 12 km. long constructed from national highway no. 15near birdhwal railway station to plant site. A private railway line of 17 km. has been constructed for coal supply from railway station to plant site along with private railway station at birdhwal and at STPS site. The water availability is also good because the INDRA GANDHI CANAL is 5 km. away from power plant. In the STPS transportation facility is also very good.
BOILER
Boiler is as equipment which is used to generate the steam. The steam gives a main role for generate for the electricity. Initially water entered the boiler at a temperature of 300°c and gives output Temperature is 500°c of steam. For this purpose Drum, Economizer, Pre heater, Super heater equipments are used. A path of water which was comes in boiler as given below:- Condensate water comes in the LPH (Low Pressure Heater) with the help tubes and water goes in the Dearator. Dearator is a devise which is use to remove the oxygen practical in water. Dearator water comes in the high pressure heater with the help of boiler feed pump, after this water comes in Economizer and the temperature of water 360°c and last stage water comes in boiler drum after this water flows in the tubes and converts in steam.