25-09-2014, 02:27 PM
SURATGARH SUPER THERMAL POWER STATION
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1 Introduction
Suratgarh thermal power station is the first super thermal plant of Rajasthan. Suratgarh Super Thermal Power Station is owned by Rajasthan Rajya Vidhyut Utpadan Nigam Ltd. and is situated near village Riyanwali about 25 KM from Suratgarh town, an ideal location for setting up a thermal power station in the state having regards to the availability of land, water, transmission network proximity to broad gauge railway and being an important load Centre for north west Rajasthan. The techno-economic clearance for the prefect was issued by CEA in June 1991 – the planning commission accorded investment sanction for the project in Nov. 91 for a total estimated cost of Rs. 1253.31 crores on prices prevailing in Sept. 1990
2 FUTURE EXPENSION
It has been decided to set up 2 X 660 MW super critical units (Unit # 7 & 8) at SSTPS. For this purpose about 446 Hectare land has been identified adjacent to the existing 6 X 250 MW plant. This land is under process of acquisition. M/s TEC have been appointed consulting engineers for this project. The state Govt. has also accorded it’s in principle approval for setting up in future, two additional units of 2 X 660 MW (UNIT # 9& 10) also based on super critical technology.
PRINCIPLE
A thermal power station is a power plant in which the prime mover is steam driven.Water is heated, turns into steam and spins a steam turbine which either drives an electrical generator or does some other work, like ship propulsion. After itpasses through the turbine, the steam is condensed in a condenser and recycled now here it was heated; this is known as a Rankine cycle. The greatest variation in the design of thermal power stations is due to the different fuel sources. Some prefer to use the term energy centre because such facilities convert forms of heat energy into electrical energy
COAL FOR STEAM STATION:-
In India, the principal sources of energy are coal amounting to over 95% ofthe total primary energy resources of the country. The coal reserves ofobtaining in our country are of the order of 130,000 Million Tonnes or evenmore and few reserve is being located. The main area where coal mines arelocated easterner regions Viz. Bihar, West Bengal, central region viz.Singrauli coal fields, Tamilnadu. Small source of coal are located in theentire country as well.
a. SURFACE CONDENSER
This type is generally used for modern steam turbine installations. Condensation of exhaust steam takes place on the outer surface of the tubes, which are cooled by water flowing inside them. The condenser essentially consists of a shell, which encloses the steam space. Tubes carrying cooling water pass through the steam space. The tubes are supplied cooling water form inlet water box on one side and discharged, after taking away heat form the steam, to the outlet water box on the other side. Instead of one inlet and one outlet water boxes, the may be two or more pair of separate inlet-outlet water boxes, each supplying cooling water to a separate bundle of tubes. This enables cleaning and maintenance of part of the tubes while turbine can be kept running on a reduced load.
b. Description of Condenser
The condenser group consists of two condensers, each connected with exhaust part of low pressure casing. A by-pass branch pipe has interconnected these woe condensers. The condenser has been designed to create vacuum at the exhaust of steam turbine and to provide pure condensate for reusing as feed water for the boilers. The tube layout of condenser has been arranged to ensure efficient heat transfer from steam to cooking water passing through the tubes, and at the same time the resistance to flow of steam has been reduced to the barest minimum.
350% capacity condensate pumping sets are installed for pumping the condensate from condenser to the deaerator4 through low-pressure heaters. Two pumps are for normal operation and one works as stand by pump.
CONCLUSION
Summer training at the end of VII semester is an integral part of B. tech curriculum, which gives the practical knowledge of the current technologies and future aspects of this & gets as a link in between the theoretical input and practical application. To get a practical knowledge of the practical field in mechanical engineering is very important. Doing summer training in such a professionally managed and well known organization SURATGARH SUPER THERMAL POWER STATION helped me a lot to achieve the aim of summer training.
During the training I have gained deep and practical knowledge about Thermal Power Plant as well as with its main components like Turbine, Boiler, and Generator etc. During the whole process of training we have learnt how to work in team