B ) the concept of ratio of conversion ; c ) effect of temperature and residence time on tar conversion ratio ; increasing the temperature and residence time is beneficial to tar cracking , and the effect is not evidence when t > 900c and > 1 . 0s d ) effect of cracking temperature on the tar conversion ratio with sic ; e ) effect of different catalyst on the tar conversion ratio ; some catalyst was test in the experimental system and dolomite is a most promising one 研究了生物质焦油含量随热解温度和生物质原料的变化趋势,提出了生物质焦油裂解率的概念、探讨了不同条件(热解温度、停留时间)下热裂解的效果和不同催化剂,不同反应条件下对焦油催化裂解效果的影响,催化剂在使用过程中由于积碳、中毒等原因会使得活性丧失,本文针对催化剂活性的丧失以及再生进行丁试验研究和理论分析。