OREANDA-NEWS. November 8, 2007. SibCOTES took part in the International Industrial Exhibition SIBPOLYTECH-2007 hosted by Siberian Fair in Novosibirsk on October 23-26. SIBPOLYTECH united several exhibitions related to technological issues and engineering: Science in Siberia, SibMash, SibEnergy, Energy and Resource Saving, ElectroSib, Gasification of Siberia, EcoSib. This year over 200 participants from different regions of Russia and overseas came to SIBPOLYTECH.

“Every year SibCOTES participates in SIBPOLYTECH Exhibition, which allows us to show our achievements, learn about the innovations made by other companies,” says Felix Serant, Director for Development, “The exhibition of scientific achievements of the Siberian Branch of the Russian Academy of Sciences is a very important and interesting event for us. Many innovations offered by Siberian scientists can and should find practical application in different businesses including construction of new power facilities and improvement of the operating ones.”

At the Exhibition SibCOTES introduced the latest technical solutions developed by the specialists of the Company and used at power and industrial facilities all over the world. The participants of the Exhibition were especially interested in the innovations related to energy saving technologies and capable to reduce detrimental emissions to the atmosphere considerably, which is becoming more and more important for power industry today.

One of the innovations shown by SibCOTES at the Exhibition is a coal-fired boiler with the circular furnace chamber. The tests and operation of this boiler with 820 t/h steaming capacity at Novo-Irkutskaya CHP plant proved its efficiency and practicability of wide application of circular furnaces for large power units for firing different types of fuel. In 2001, the Scientific Technical Committee of RAO UES recommended to use this type of boiler for Russian power stations. A new arrangement of the combustion chamber allows the Owner to reduce boiler height by 30%, bring down steel intensity and, therefore, the cost of heating surface in the circular boiler by 20%, improve the reliability of operation of furnace waterwall panels, decrease fouling and slagging, abate NOx emissions, simplify the design of structural units and supporting-and-pendant boiler structures. 

One more development of SibCOTES, which is of great interest for power industry today, is a three-stage combustion system representing low-NOx combustion technologies. The essence of the system lays in the organization of three zones in combustion space. In lower zone 70-85% of all fuel is burned with excess air close to one or less. Above this zone the rest of the fuel (15-30%) is fed into the furnace with excess air much lower than one. Still higher, in the third zone, the remaining air (15-25%) is put into the furnace to ensure complete combustion of unburned carbon and combustibles generated in the previous zones. The three-stage combustion system with coal reburning combined with supplying and burning of high-density pulverized-coal was first successfully used for the reconstructed boiler E-210-98 (OP-210M) at Scawina Power Plant (Poland).