Techno-economic evaluation of revamping of coal-fired power plants in India. (9th May 2006)

• Record Type: Journal Article
• Authors: Dutta, Animesh; Dutta, Shantanu; Basu, Prabir
• Is Part Of: International journal of global energy issues. Volume 26:Number 1/2(2006)
• Page Start: 6
• Page End: 42
• Publication Date: 2006-05-09
• Subjects: energy industry -- revamping -- coal fired power plants -- capital cost -- financial analysis -- technological options -- circulating fluidised bed -- CFB -- pulverised coal fired -- emission -- techno-economic feasibility -- India -- bubbling fluidised bed -- BFB -- boilers -- performance improvement -- plant load factor -- forced outage -- auxiliary oil consumption -- energy finance; Power resources -- Periodicals; 333.79
• Languages: English
• ISSNs: 0954-7118

Abstract

A techno-economic feasibility study has been conducted to investigate the revamping of two 32 MWe Pulverised-Coal (PC) boilers with a number of firing options. The options investigated were: (1) conventional PC revamping, (2) replacement with a new PC boiler, (3) PC to Circulating Fluidised Bed (CFB) revamping, (4) replacement with a new CFB boiler, and (5) Bubbling Fluidised Bed (BFB) revamping. The study reveals that: (i) CFB revamping of the boilers is technically feasible and economically viable; (ii) Performance improvement of the plant is significant in terms of such indices as plant load factor, forced outage and auxiliary oil consumption; (iii) Significant improvement in emissions performance due to the reduction in emissions of NOx and fly ash is projected; (iv) CFB revamping option gives the highest return on investment compared to alternatives. Finally, to demonstrate the technical soundness and viability of the special design used in this revamping, a subscale CFB boiler has been designed and built at another power plant.