A PARALLEL CO-FIRING OF BIOMASS IN A SUPERCRITICAL COAL FIRED POWER PLANT - PART I

In the paper are presented the results of the analysis of a supercritical coal fired power plant wherein one or more regeneration exchangers are replaced by a water boiler combusting biomass. The technology classified in the group of methods of parallel co-firing of biomass and coal is an alternative with relation to the actually applied direct methods. All analyzed cases were investigated in consideration of their adaptation in the reference system, which became characterized in the article. A lot of variants of the configuration of replacement high- and low-pressure regeneration were considered. The replacement of high-pressure exchangers was considered for three options Of utilization of an additional steam, resultant in consequence of the liquidation of bleeders of the high-pressure part of the turbine. The analysis based on energy effectiveness coefficients defined in the article.