A Presentation on EXCELLENCE IN WATER MANAGEMENT 2008 ABAN POWER COMPANY LIMITED. Aban CII_wate r Award 08 COMPANY PROFILE. Part of LANCO group

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1 By A Presentation on EXCELLENCE IN WATER MANAGEMENT 2008 ABAN POWER COMPANY LIMITED 1 COMPANY PROFILE Part of LANCO group Independent Power Project (IPP) with Natural gas based Combined cycle power plant of Capacity MWH Established thro International Competitive Bidding (ICB) route Power supply to the TNEB Grid on Long-term basis 2

2 CDM APPROVED Smoke free chimney ABAN is the First project in the world for a gas based combined cycle power plant to obtain CDM tag under AM 0029 methodology. Registered as CDM Project with UNFCCC on 29th May 2007 VER CER CER ISO & OHSAS CERTIFIED 4

3 N ATUR AL GAS G ENER ATOR PROCESS FLOW C T G GAS TURBINE FLUE GAS TO ATMOSPH ERE AIR FLUE GAS TO HRS G HRSG BY PASS S TACK MAIN STAC K G ST STEA M TO TU RBINE BL O W FEED WATER TO HRS G D O W N GUA RD PO ND GT WAS H / C T BLOW DOWN AIR CO OLED C OND ENSO R C OND ENSATE BAC K TO H RSG HOT WEL L WATER FR OM TWAD BO RAD D.M PLANT MAKE UP TO HRSG R.O PLANT SO LAR EVAPO RATO N PO NDS PERMEATE - FO R RECY CLE REJECTS TO SO LAR PO NDS 5 WATER CONSERVATION PROJECTS DESIGN STAGE Air Cooled Dry Low NOX Condenser Savings in m 3 /yr : : Savings in m 3 /yr : : RWHP 18,000 m 3 /yr 6

4 TYPICAL POW ER PLANT Super heated Steam is consumed for reducing the NOx level Minimum 45 ppm of NOx level in the emission even after Water or steam injection About 1402 kg/day of NOx emitted in the flue gas 425 MT/d of steam is needed for reducing NOx level to 45 ppm (max) Efficiency is less DRY LOW NOx BURNERS ABAN No steam or No DM water Maximum of 20 ppm of NOx in the emission. About 374 kg/day of NOx is only emitted No need of steam or water Highly efficient (more than 47 %) Remarks Saving on natural resources New standard / bench mark Less pollution better environment State of the art technology Profit and saving on natural resources. TYPICAL POWER PLANT Cost of steam injection would result in 4.52 crores per annum approx DM water consumption is 335 ltrs / MWH Cost of the project Additional to existing HRSG piping Effluent generation in the steam or DM water production DRY LOW NOx BURNERS ABAN NIL treatment cost so savings is 4.52 crores per annum approx DM water consumption is NIL litres / MWH Cost of the project Rs.16 crores approx No generation of effluent Remarks No impact on environment Reduction in water consumption En vironmental investment can be paid back Zero discharge of effluents was possible

5 DRY LOW NOx BURNERS conservation Method DLN BURNERS FOR GAS TURBINE Selected a GT with DLN burners (GE 6FA Gas Turbine)in place of conventional turbine without DLN Result: Savings includes the cost of production for steam using DM water, fuel, chemical dosing and handling of effluent generation & reduced emission, water Period (eight mon ths of operation) Saving of water m m m 3 Rs Rs. 448 Rs AIR COOLED CONDENSERS Method Period Saving of water AIR COOLED CONDENSERS Installed Air Cooled Condensers in place of conventional cooling towers Result: Consumption is 102 litres/mwh instead of 2500 lit/mwh (eight mon ths of operation) m m m 3 Rs. 406 Rs. 618 Rs

6 AIR COOLED HEAT EXCHANGERS Method Period Saving of water AIR COOLED HEAT EXCHANGERS Installed Air Cooled Heat Exchangers (ACHE) for Closed Cooling water system (CCW) in place of conventional cooling towers using water resource. Result: Consumption is almost NIL requirement of water; hence saving of 6.07 m 3 /Hr (eigh t mon ths of operation) m m m 3 Rs Rs Rs RAIN WATER HARVESTING POND Method Period Saving of water Storm water reservoir KL approximate capacity with 9 percolation pits. Utilizing this water as and when required for maintaining: trees, shrubs hedges Sq Mt of Lawn & m 3 Rs Proactive practice to enrich water table 12

7 WATER CONSERVATION PROJECTS CONTINUAL IMPROVEMENT Auxiliary Cooling Water Savings in m 3 /yr : 3240 Reverse Osmosis : 3240 Savings in m 3 /yr : : IMPROVEMENT IN R.O RECOVERY Method Period Saving of water R.O PLANT Pre treatment- Feed ph brought down from to by acid treatment thereby keeping LS I close to zero or slightly negati ve m m 3 Rs Rs Result : Permeate increased by 0.9 m 3 /hr 14

8 R.O Improved performance after pretreatment modification EFFLUENT from DM DM PLANT PLANT N PIT ACW, BOILE R BLOW DOWN HRSG SUMP C. F DMF HCL FeCl3 POLY GUARD POND SETT LING TANK HP PUMP REJE CT R.O SKID R.O Treatment after modifications PERME ATE 15 C.T COC INCREASE Method Period Saving of water By Increase in Cycle of Concentration COC in Auxiliary Cooling Tower from 5 COC to 8 COC Result: A) Reduction in consumption of water by 270 M 3 / Month B) Cost saving in reduction of chemical treatment Rs per month & m 3 Rs

9 Raw Water Consumption in Kl Aug-05 Oct-05 Dec-05 Feb-06 Apr-06 Jun-06 Aug-06 Oct-06 Dec-06 Feb-07 Apr-07 Months Jun-07 Aug-07 Oct-07 Dec-07 Feb-08 Apr-08 Jun-08 Aug-08 Oct-08 SPECIFIC WATER CONSUMPTION Year Annual Water Consumption (M 3 ) Generation (MWh) M 3 / MWh (8 months)

10 SPECIFIC WATER CONSUMPTION m3/mwh Specific Water Consumption Year 19 Recycled/Unit Generation in M3/MWH Year

11 GOOD GREEN GOVERNANCE AWARD CII ENERGY EFFICIENT UNIT AWARD

12 IN A NUT SHELL The project was implemented with: v Zero Discharge facility v R.O plant to recycle the effluents & rejects to solar evaporation ponds v GT with DLN burners does not require steam or water venergy and water saving A.C.C & A.C.H.E system in place of conventional cooling towers viso & OHSAS Certified v CDM Approved Project 23 Thanks 24