Method of preventing caking of biomass fuel by the addition of additive

摘要

Chemical analysis of biomass ash and/or clinkering materials is carried out in order to determine content of non-combustible components in the form of oxides such as SiOi2, Pi2Oi5, Ki2O, Nai2O, Ali2Oi3, CaO, MgO, Fei2Oi3 or FeO. After plotting the composition of the biomass ash into a ternary phase diagram of Ki2O, CaO, SiOi2 and/or Ki2O + Nai2O, CaO + MgO, a SiOi2 + Ali2Oi3 or SiOi2 + Ali2Oi3 + Pi2Oi5, the eutectic temperature of the biomass ash of the first melt formation is read out. Using preferably electrical complex impedance, eutectic and/or critical temperature of biomass ash and/or clinkering materials is measured. Provided, the eutectic and/or critical temperature is lower than the highest temperature in the combustor, theoretical amount of additive necessary for the increase of the biomass ash eutectic and/or critical temperature as well as the highest temperature in the combustor are determined from the ternary phase diagram. The amount of additive can be at the same time increased by the multiple of 1.01 to 1.30. The biomass fuel with the addition of an additive thus contains 90 to 99.5 percent by weight of biomass in the dry matter and 0.5 to 10 percent by weight of crushed additive in the dry matter, wherein the additive comprises at least on oxide being selected from the group consisting of the following oxides: SiOi2, Ali2Oi3, CaO, MgO and/or compounds thereof.