流化床锅炉协同处置农林废弃物数值模拟研究

Numerical Simulation Study on Collaborative Disposal of Agricultural and Forestry Wastes by Fluidized Bed Boilers

针对某台75 t/h循环流化床锅炉进行了农林废弃物掺烧数值模拟,通过对比实验数据验证了仿真模型的正确性与可靠性,进一步深入分析了不同掺混因素与锅炉运行参数对炉内燃烧特性、出口污染物排放以及炉膛磨损的影响。结果表明:低农林废弃物掺烧比与高一次风配比有利于改善燃烧特性,而高农林废弃物掺烧比将降低出口污染物排放。

Numerical simulation of agricultural and forestry waste blended firing in a 75 t/h circulating fluidized bed boiler was conducted.The correctness and reliability of the simulation model were verified by the experimental data through comparison.The effects of blending conditions and boiler operating parameters on combustion characteristics in the furnace,pollutant emission and furnace wear were analyzed thoroughly.The results show that the combustion characteristics are improved by low blending ratio of the agricultural-forestry waste and high primary air ratio.While high blending ratio of the agricultural-forestry waste will reduce pollutant emission.