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ANNEX IV:ADVANCED FOSSIL FUEL TECHNOLOGYDEVELOPMENT AT BHELByMr. R. KumarGeneral ManagerBharat Heavy Electricals Limited (BHEL)Tiruchirappalli, Tamil Nadu, IndiaThermal power generation technology has been undergoing rapid advancement towards:• Improving the efficiency of power generation;• Minimizing atmospheric pollutants; and• CO 2reduction, capture and storage.Table 3-4 lists the salient events in the thermal power generation technologydevelopment in India over the years.Table 3-4: Thermal power generation technology development in India over the yearsPeriodDevelopments1960s • Boiler design as per Czechoslovakian technology, 30 MW & 60 MW1970s • Technology from Combustion Engineering, the United States; unitcapacities 110 MW• 210 MW – Low-pressure steam cycle1980s • Pressure ratings increased to achieve higher plant efficiency; unitcapacity increased to 500 MW; controlled circulation introducedfor very high pressures• Firing system design for low NOx emission• Deteriorating coal properties led to increased tube erosion andperformance deviations; units redesigned for inferior coals; towertype boilers introduced for highly erosive coals1990s • 250 MW units developed• 130 MW unit firing steel plant by-product gas (Corex gas)• Boiler efficiency improvement by designing for low exit gastemperatures2000s • Technology tie-up for supercritical steam generators with ALSTOM,France• Introduction of IT-based ‘Performance Analysis Diagnostic andOptimization’ (PADO) for monitoring power plant performance andoptimization• Designs for firing washed coal/imported coal developedBHEL has attempted to improve cycle efficiency through higher inlet steam temperatureand pressure parameters (Table 3-5).89