Supercritical technology for power plants to save fuel

Written by Sanjay Jog | Mumbai, Aug 25 | Updated: Aug 26 2008, 06:24am hrs
The Centre has launched supercritical power programme on the lines of the US, Japan, Germany, Korea and Russia. Power ministry sources told FE that the super critical technology will result in saving of about 4% of fuel and correspondingly less emission.

With crude oil prices shooting through the roof, India, which is a signatory to the Kyoto Protocol, in order to support the technology in the thermal power projects, the government has decided that the methodology for the award of 7 units of 660 mw and 6 units of 800 mw would pave the way for progressive indigenisation of supercritical technology. The government is striving to meet the capacity addition target of 78,700 mw in the 11th Plan.

Several companies have already expressed interest to augment or set up manufacturing facilities in the country for super-critical units. These include Bhel, Boiler and Turbine Generator (TG), Ansaldo Caldie (Boiler), L&TMHI (Boiler and TG), ToshibaJSW (TG) and Alstom-Bharat Forge (TG). Larsen & Toubro already had a tie-up with Mitsubishi Heavy Industries of Japan for manufacturing supercritical steam turbines and generators in India.

Currently, supercritical technologies are under installation at Sipat and Barh thermal power stations of NTPC. The Ultra Mega Power Projects are also being envisaged to be set up with supercritical parameters. Tata Powers Mundra project imported turbines from Toshiba and boilers from Doosan, Korea.

NTPC and the state utilities, in addition, have proposed to set up a number of 600/800 mw power stations based on supercritical technology. The list of projects include NTPCs Darlipalli in Orissa (4x800 mw), NTPCs Tanda expansion in Uttar Pradesh (2x660 mw), NTPCs Pench in Madhya Pradesh (2x660 mw), NTPC-Uttar Pradesh joint ventures Mejja in UP (2x660 mw), NTPC-Bihar JVs New Nabinagar in Bihar (2x660 mw), Mahagencos Koradi in Maharashtra (3x660 mw), Mahagencos Dhopawe in Maharashtra (2x800 mw), BHEL-UP JVs Obra in UP (2x800 mw) and Bhel-Tamil Nadu Electricity Board JVs Udangudi in Tamil Nadu (2x800 mw).