花生壳掺烧对市政污泥燃烧性能的影响

针对花生壳掺混对市政污泥燃烧性能的影响及污染气体的排放，分析了升温速率和花生壳掺混比例对燃烧过程的影响规律.结果表明，当花生壳掺混比例为40%时，升温速率从5℃/min增加到30℃/min，样品的综合燃烧性能指数增大6.9倍，挥发分释放特性指数增大4.5倍；当升温速率为30℃/min时，花生壳掺混比例从0%到40%，样品的综合燃烧性能指数增大1.7倍，挥发分释放特性指数增大5.6倍；因此花生壳的掺混能有效改善污泥的燃烧性能.非等温动力学拟合结果显示，随着花生壳掺混比例增大，样品的反应活化能从87.16kJ/mol下降到69.73kJ/mol，更有利于反应进行.污染气体实时监测结果显示，花生壳掺混比例从10%增加到40%，样品的NO排放峰值下降了60%，说明花生壳的掺入能够显著减少样品燃烧时污染气体的排放量.

Effects of biomass blending on combustion performance of sewage sludge

In term of the effects of peanut shell blending on the combustion performance pollution emission of sewage sludge, the effects of heating rate and peanut shell blending ratio on the combustion process were analyzed. The results showed that when the peanut shell blending ratio was 40% and the heating rate increased from 5℃/min to 30℃/min, the composite combustion performance index and volatile matter release characteristic index increased 6.9 times and 4.5 times respectively. When the heating rate was 30℃/min, and the blending ratio of peanut shell increased from 0% to 40%, the comprehensive combustion performance index and volatile matter release characteristic index of samples increase by 1.7 times and 5.6 times, respectively, indicating that peanut shell blending can effectively improve the combustion performance of sewage sludge. The results of non-isothermal kinetic fitting showed that the activation energy decreased from 89.16 kJ/mol to 69.73 kJ/mol with the increase of peanut shell blending ratio, which was beneficial for the combustion reaction. The real-time monitoring of pollution gas showed that the peak of NO emission decreased 60% when the peanut shell blending ratio increased from 10% to 40%, indicating that the peanut shell could significantly reduce the emission of pollution gas during combustion process.