低碳烃芳构化催化剂烧炭再生动力学  

Kinetics of Coke Combustion Regeneration of Light Hydrocarbon Aromatization Catalyst

作　　者：金永明[1] 钟思青[1] 王菊[1] 蒙根[1] 李晓红[1] 

机构地区：[1]中国石油化工股份有限公司上海石油化工研究院,上海201208

出　　处：《化学反应工程与工艺》2015年第2期177-182,共6页Chemical Reaction Engineering and Technology

摘　　要：以结焦的ZSM-5分子筛催化剂为研究对象,在热重分析仪上进行催化剂再生烧炭实验,在500~650℃和氧分压10~25 k Pa的条件下,考察了再生温度、氧分压及时间对烧炭过程的影响,计算得到含碳量1.3%（质量分数）的催化剂的再生动力学参数,回归得到ZSM-5分子筛催化剂再生动力学模型。结果表明,适宜的再生烧炭温度在600℃左右,适宜的氧分压为15~20 k Pa。ZSM-5结焦催化剂的烧炭反应速率与炭含量和氧分压的关系符合一级反应规律,该模型能较好地拟合实验数据。The regeneration experimens of coked ZSM-5 catalyst were carried out under the temperature of 500-650 ℃ and oxygen partial pressure of 10-25 k Pa by a thermogravimetric analyzer. The influence of the regeneration temperature, oxygen partial pressure and reaction time on the regeneration process was investigated, respectively. The regeneration kinetic model was obtained by regressing by the experimental data of the regeneration kinetic parameters of catalyst with carbon content of 1.3%（mass fraction）. The results showed that the optimum regeneration temperature was around 600 ℃ and the appropriate oxygen partial pressure was 15-20 k Pa. The model for the relationship of the coke burning reaction rate, the carbon content and oxygen partial pressure was in accordance with the first-order reaction rule, which could predict the experimental data credibly.

关 键 词：ZSM-5分子筛 再生 烧炭动力学 模型 

分 类 号：O643.11[理学—物理化学] O643.362[理学—化学]