23 July 2003 – Alstom has been awarded a turnkey contract from Vilnius Energija to convert Unit N°1, a Russian built 200 MW boiler, to provide low NOx emissions when firing heavy fuel oil and natural gas, as well as the ability to fire Orimulsion.
Vilnius Combined Heat and Power Plant is the main source of district heating supplied to the capital of the Republic of Lithuania. The boiler was commissioned in 1983 and has a nominal capacity of 670 tonnes/hour with a maximum capacity of 700 tonnes/hour of steam. The boiler is a type TGME 206 with twelve burners for mixed fuel, installed in two levels on the back wall and designed for balanced draught operation with natural re-circulation.
Alstom will provide, design, install and test the new RoBTAS (Round Burner Tilted Air Supply) wall burner equipment, boiler controls upgrade and new burner management system. The project also includes enhancements to the existing overfire air system and utilisation of bulk mixed recirculated flue gas into the windbox from the existing system, which is presently used for steam temperature control.
Alstom’s success in securing the project is based in part on its high performing burner systems and ability to meet a challenging ‘Fast Track’ programme for the works. This contract follows on from the automated boiler ignition and flame control system previously installed in 2002.