This study presents a method for comparing corrosion inhibiting fuel additives using the thermodynamic modelling software FactSage^TM. Two biomass ashes were investigated while using a range of loadings of three additives: Fe-based additive and two coal ashes, one with an 80% Si and Al contents and one with less than 50% of Si and Al contents but having a significant Ca content. The metrics used for analysis were the formation of various corrosive compounds and by-products. The Fe-based additive could inhibit the formation of corrosive species but not as well as either of the coal ashes, as it was key to increase the Si and Al content of the deposits. The coal ash with the greatest Si and Al content proved most capable of inhibiting fireside corrosion, while the contaminants present in the other coal ash proved detrimental to reducing the production of certain corrosive species. This method can be used as a qualitative predictive tool by research and development teams to quickly and economically understand the consequences of utilising fuel additives on ash chemistry or of changes in proportion/sources of fuel in a power plant.

本研究提出了一种使用热力学建模软件 FactSage ^TM比较缓蚀燃料添加剂的方法. 在使用三种添加剂的一系列负载量时研究了两种生物质灰：铁基添加剂和两种煤灰，一种具有 80% 的 Si 和 Al 含量，另一种具有低于 50% 的 Si 和 Al 含量但具有显着的 Ca内容。用于分析的指标是各种腐蚀性化合物和副产品的形成。Fe 基添加剂可以抑制腐蚀性物质的形成，但不如任何一种煤灰，因为它是增加沉积物的 Si 和 Al 含量的关键。事实证明，Si 和 Al 含量最高的煤灰最能抑制炉侧腐蚀，而其他煤灰中存在的污染物则不利于减少某些腐蚀性物质的产生。