Abstract In this study, the pyrolysis of Kraft lignin was conducted in a rotary kiln reactor using rotating alumina balls as a filler to achieve a continuous pyrolysis process by the suppression of char agglomeration. Temperature variation experiments showed that the gas yield increased and the char yield decreased with an increase in the pyrolysis temperature from 550 °C to 650 °C. The maximum oil yield was obtained at a reaction temperature of 600 °C. Compared to a fixed bed reactor, a rotary kiln reactor using alumina balls produced the higher quality oil containing larger amount of organic phase oil and higher selectivity to aromatic hydrocarbons. At all temperatures, no lignin char agglomeration occurred inside the reactor due to the effective collision of lignin char intermediates and alumina balls, allowing a continuous pyrolysis process without reactor plugging.

中文翻译：

---

硫酸盐木质素热解过程中氧化铝球回转窑反应器抑制炭团聚

摘要 本研究在回转窑反应器中以旋转氧化铝球为填料对硫酸盐木质素进行热解，通过抑制炭团聚来实现连续热解过程。温度变化实验表明，随着热解温度从550℃升高到650℃，气体产率增加，焦炭产率降低。在 600 °C 的反应温度下获得最大的油收率。与固定床反应器相比，使用氧化铝球的回转窑反应器生产的油质量更高，含有更多的有机相油，对芳烃的选择性更高。在所有温度下，由于木质素炭中间体和氧化铝球的有效碰撞，反应器内没有发生木质素炭团聚，