TY - JOUR N2 - The paper deals with the impact of co-firing biomass with coal in boilers on the dew point of the flue gas. Co-firing of biomass may have twofold implications on corrosion and fouling, which are the processes that determine the lowest acceptable flue gas outlet temperature and as a result, boiler efficiency. Both phenomena may be reduced by co-firing of usually low sulphur biomasses or enhanced due to increased moisture content of biomass leading to increased water dew point. The present study concerns the problem of low-temperature corrosion in utility boilers. The paper gives (in the form of diagrams and equations) a relationship between water dew point and moisture content of fuel mixture when co-firing coal and various biomasses. The regression analysis shows that despite significant differences in the characteristics of coals and these of additional fuels, which are planned for co-firing in large-scale power boilers, the water dew point can be described by a function given with the accuracy, which shall be satisfactory for engineering purposes. The discussion of the properties of biofuels indicates that the acid dew point surplus over the water dew point (Δtr = tr - twr) is not likely to exceed 10 K when co-firing biomass. The concluding remarks give recommendations for the appropriate operation of boilers in order to reduce risks associated with biomass co-combustion. L1 - http://journals.pan.pl/Content/84830/PDF/08-paper-Ciukaj.pdf L2 - http://journals.pan.pl/Content/84830 PY - 2013 IS - No 1 March EP - 108 DO - 10.2478/cpe-2013-0009 KW - acid-dew point KW - low-temperature corrosion KW - biomass KW - co-firing A1 - Ciukaj, Szymon A1 - Pronobis, Marek PB - Polish Academy of Sciences Committee of Chemical and Process Engineering DA - 2013 T1 - Dew Point of the Flue Gas of Boilers Co-Firing Biomass with Coal SP - 101 UR - http://journals.pan.pl/dlibra/publication/edition/84830 T2 - Chemical and Process Engineering ER -