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在亚洲最大的50 MW生物质循环流化床直燃锅炉上进行了掺烧防腐蚀剂的燃烧试验,防腐蚀剂采用多孔膜结构,主要成分是MgO、高岭土、活性Al2O3和发泡剂,试验结果表明:掺烧防腐蚀剂不会降低锅炉热效率,且能够有效地降低飞灰中K、Cl元素的含量,将其固留在炉渣中。当防腐蚀剂添加量占总燃料质量的3%时,飞灰中的K元素含量由7.62%下降为5.69%,Cl元素含量由3.86%下降为2.35%;而炉渣中的K元素含量由4.03%上升为4.71%,Cl元素含量由756.58 mg/kg上升为1 121.31 mg/kg;同时烟气中的HCl排放量由25 mg/Nm3下降为15 mg/Nm3,NO含量由268 mg/Nm3上升为309 mg/Nm3。
In Asia’s largest 50 MW biomass circulating fluidized bed direct fired boiler combustion test mixed anti-corrosion agent, anti-corrosion agent porous membrane structure, the main ingredients are MgO, kaolin, activated alumina and foaming agent, the test results show that : Addition of anti-corrosion agent will not reduce boiler thermal efficiency, and can effectively reduce the fly ash K, Cl element content, the retention in the slag. The content of K element in fly ash decreased from 7.62% to 5.69% and the content of Cl element decreased from 3.86% to 2.35% when the amount of anti-corrosion agent added was 3% of the total fuel mass. The content of K element in slag increased from 4.03% While the content of Cl increased from 756.58 mg / kg to 121.31 mg / kg. At the same time, the HCl emission from the flue gas decreased from 25 mg / Nm3 to 15 mg / Nm3 and the content of NO increased from 268 mg / Nm3 to 309 mg / Nm3.