350 MW Pragati-II Combined Cycle Power Project of PPCL

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Rapid Environmental ImpactAssessment Study of the Proposed350 MW Pragati-II Combined CyclePower Project of PPCLDoc. No.: CW-EN-9384-C-379-E-R-002Rev. No.: R0Issue Date: 21-02-2006Page No: 2 of 16Delhi shall experience a deficit of 1023 MW for 2007 – 08 and 1281 for 2008-09.Based on the demand supply projections, Delhi is going to face energy shortages in11 th plan. The installation of 350 MW combined cycle power station at Pragati II istherefore considered justified.4.0 SITE AND SURROUNDINGThe site is located east of the Ring Rood near to the existing Pragati CCPP. It issituated between Bhairon Road crossing and Nizamuddin Bridge. Latitude andLongitude of the plot are 28° 37’ N and 77° 15’ E respectively.a) Project location : State of Delhib) Latitude : 28° 37’Nc) Longitude : 77° 15’ Ed) Nearest railway station : New Delhi, NizamuddinRailway Statione) Distance of project site from the railway : 1 km.stationg) Nearest commercial airport : Indira GandhiInternational Airporth) Distance of airport from the project site : 20 kms (Approx.)i) Nearest highway : NH-24j) Distance from nearest Highway point tothe site: 0.5 kms. (Approx.)The study area has been shown in Exhibit-I.5.0 PROJECT RESOURCES5.1 LANDThe project is proposed to be located in about 9.5 hectares of land adjacent tosouth of existing 330 MW Pragati CCPP I of PPCL. It is ash dyke area of IP Station.5.2 WATER5.3 FUELWater requirements of the project 750m 3 /hr will be met through treated sewage fromOkhla Sewage Treatment Plant of Delhi Jal Board (DJB). Treated sewage from theSTP will be pumped to the proposed Raw Water Reservoir within the plant.The main fuel, natural gas shall be received at the site from the existing Natural GasTerminal of GAIL near Pragati CCPPI Power Station.EXECUTIVE SUMMARYMANTEC CONSULTANTS (P) LTD., NEW DELHI
Rapid Environmental ImpactAssessment Study of the Proposed350 MW Pragati-II Combined CyclePower Project of PPCLDoc. No.: CW-EN-9384-C-379-E-R-002Rev. No.: R0Issue Date: 21-02-2006Page No: 3 of 165.4 TRANSMISSION SYSTEMPower evacuation will be through 220 KV out going feeders to Akshar Dham/Ghazipur/ Maharani Bagh substations of Delhi Transco Limited.6.0 SPECIAL PROJECT FEATURES‣ Thermal Power Plant running on natural gas is considered as one of the cleanestform of industries. The proposed power plant shall be operated only on natural gasas fuel. No liquid fuel shall be used for power generation, thereby eliminatingemission of particulate matters and sulphur di oxides.‣ Treated sewage shall be used for operating the entire process of the power plant,thereby saving fresh water resources. Necessary treatment process plants shall beinstalled to make sewage suitable for use in power plant processes.‣ Dry Low NOx (DLN) burners shall be provided along with the gas turbines tocontrol NOx emission at source within 35 ppm against the statutory limit of 75 ppm.‣ An ash disposal area. i.e. an industrial wasteland shall be converted into anusable industrial land to put up a power plant.7.0 PROCESS IN BRIEFAir is compressed in a compressor and the air-fuel mixture is injected into thechamber and fired. The hot product of combustion, at 1000 to 1300 o C, is expandedin the gas turbine, which drives on one end of the generator, where mechanicalenergy is converted into electrical energy and on the other end an axial flowcompressor, which provides the combustion air. To reduce the generation of NOxduring the combustion process in the GT set, it is proposed to incorporate DLNburners, which would effectively reduce the NOx concentration in flue gas to below35 ppm level.In the combined cycle operation, the heat content of the exhaust gas from the gasturbine is utilized to produce steam in the heat recovery steam generator (HRSG).The exhaust gas from the gas turbines, at about 560 o C, will enter the HRSG boilers,where the residual energy will be utilized for generating HP and LP steam. Thesteam, in turn, is utilized to generate electrical energy in the steam turbine. Thespent steam from the ST is condensed, extracted, deaerated and recycled back tothe HRSG as boiler feed water. The flue gas, at about 100 o C, will be discharged intothe atmosphere through stacks of 70 metre height.EXECUTIVE SUMMARYMANTEC CONSULTANTS (P) LTD., NEW DELHI
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350 MW Pragati-II Combined Cycle Power Project of PPCL

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