Nearly 33 million tons of sugarcane bagasse are produced in China every year, and a large amount of this is wasted. Pelletization is an efficient method of utilizing excess bagasse. This study uses a specially designed pelletizing device to identify how process parameters and biomass characteristics affect the densification of sugarcane bagasse. We used four-factor Box-Behnken experimental design and response surface methodology (RSM) to predict pellet density, specific energy consumption, and the radial maximum pressure of bagasse pellets and how they were affected by temperature (100, 140, and 180 °C), feedstock moisture content (6, 9, and 12%), particle size (0.5, 1.0, and 1.4 mm), and holding time (2, 3, and 4 min). Our results demonstrated that both temperature and moisture content significantly affected all responses evaluated, and that these interactions significantly affected pellet density and specific energy consumption. Temperature is the crucial factor determining the quality of bagasse pellets. High temperatures (140–180 °C) resulted in homogeneous, smooth, and shiny pellet surfaces, which had no cracks. Scanning electron microscopy analysis demonstrated a close connection between fibers at high temperatures. Particle size affected all responses except pellet density, while the influence of holding time on pellet density and radial maximum pressure was significant. RSM models determined the following optimal parameters: temperature (180 °C), moisture content (9%), particle size (0.5 mm), and holding time (3 min). Under optimal conditions, the pellet density, specific energy consumption, and radial maximum pressure of sugarcane bagasse pellets could reach 1172 kg m⁻³, 7.1 kJ kg⁻¹, and 2539.4 N, respectively.

我国每年生产甘蔗渣近3300万吨，其中大量被浪费。造粒是利用多余甘蔗渣的有效方法。本研究使用专门设计的造粒设备来确定工艺参数和生物质特性如何影响甘蔗渣的致密化。我们使用四因素 Box-Behnken 实验设计和响应面方法 (RSM) 来预测颗粒密度、比能耗和甘蔗渣颗粒的径向最大压力以及它们如何受温度（100、140 和 180 °C）的影响)、原料水分含量（6、9 和 12%）、粒径（0.5、1.0 和 1.4 毫米）和保持时间（2、3 和 4 分钟）。我们的结果表明，温度和水分含量都显着影响了所有评估的响应，并且这些相互作用显着影响了颗粒密度和比能量消耗。温度是决定甘蔗渣颗粒质量的关键因素。高温 (140–180 °C) 导致颗粒表面均匀、光滑、有光泽，没有裂纹。扫描电子显微镜分析证明了高温下纤维之间的紧密联系。粒度影响除颗粒密度外的所有响应，而保持时间对颗粒密度和径向最大压力的影响是显着的。RSM 模型确定了以下最佳参数：温度 (180 °C)、水分含量 (9%)、粒径 (0.5 mm) 和保持时间 (3 min)。在最佳条件下，球团密度、比能耗、^-3、7.1 kJ kg ^-1和 2539.4 N 分别。