【摘要】 为探究不同预处理方式下生物质与煤在实际应用中的研磨特性，并对比二者的磨粉性能及其影响因素，采用煤电领域常用的工业磨煤机，通过多参数协同调控优化，分别确定煤与生物质的最佳研磨工况。研究结果表明：以无烟煤为原料时，最佳工况参数为加载力5.0 MPa、分离器转速352.2 r/min、磨盘转速91.0 r/min、入口风量236 m³/h（风煤比值1.43）。在此条件下进行煤粉细度(R₉₀)为10%的最大出力实验，最大负荷、通风阻力与能耗分别为425 kg/h、 1 997 Pa、 7.5 kW·h/t,结果优于单一变量控制实验，经计算无烟煤的基本出力为470 kg/h。对比不同预处理方式对生物质燃料特性的影响发现，水热与烘焙处理均能改善样品的官能团分布、燃烧性能与研磨性能。生物质处理量主要受可磨性影响，玉米秆烘焙料处理量最高达到404 kg/h,而研磨能耗则同时受可磨性与纤维结构共同影响。生物质的基本出力(B_M0)主要受纤维结构影响，木屑颗粒纤维素含量较低，烘焙料结构破坏严重，二者基本出力都能达到210 kg/h以上，而玉米秆水热料的基本出力仅有191 kg/h。更多还原

【Abstract】 To explore the grinding characteristics of coal and biomass under different pretreatment methods in practical applications and compare their grinding performance and influencing factors, the best grinding conditions for coal and biomass through multi-parameter collaborative regulation and optimization were obtained. The results demonstrated that for anthracite, the optimal working conditions of loading force, separator speed, grinding disc speed, inlet air volume and air-to-coal ratio were 5 MPa, 352.2 r/min, 91.0 r/min, 236 m³/h and 1.43 respectively. Under this condition, the maximum output experiment was conducted with a pulverized coal fineness(R₉₀) of 10% and the maximum load, ventilation resistance and energy consumption were 425 kg/h, 1 997 Pa and 7.5 kW·h/t, respectively. These results were superior to those obtained from single-factor experiments. Moreover, the calculated basic output of anthracite was 470 kg/h. Comparing the effects of different pretreatment methods on biomass fuels properties, it was found that both hydrothermal and torrefaction treatments could improve the distribution of functional groups, combustion and grinding performance of the samples. Biomass processing capacity was mainly affected by grindability, with the torrefied cornstalk achieving the highest processing capacity of 404 kg/h, while the grinding energy consumption was influenced by both grindability and the fiber structure. The basic output of biomass(B_M0) was mainly affected by the fiber structure. Due to the relatively low cellulose content of wood chip pellets, the torrefied materials had severely damaged structures, and their basic outputs could all exceed 210 kg/h, while the hydrothermally treated cornstalk was only 191 kg/h.更多还原